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Technical Catalog

"SET-FREE"

FXG

Outdoor Units: 8 & 10 HPIndoor Units Type:• In-the-Ceiling• 4-Way Cassette• 2-Way Cassette• Wall• Floor• Floor Concealed• Ceiling

Specifications in this catalogue are subject to change without notice in order thatHITACHI may bring the latest innovations to their customers

Whilst every effort is made to ensure that all dimensions and specifications are correct,any printers' errors not rectified are outside the control of HITACHI, who cannot be held

responsible for same

IMPORTANT NOTICE 1

IMPORTANT NOTICE

n HITACHI pursues a policy of continuing improvement indesign and performance of products. The right istherefore reserved to vary specifications without notice.

n HITACHI cannot anticipate every possible circumstancethat might involve a potential hazard.

n These heat pump air conditioners are designed forstandard air conditioning only. Do not use these heatpump air conditioners for other purposes such as dryingclothes, refrigerating foods or for any other cooling orheating process.

n No part of this catalog may be reproduced without writtenpermission.

n Signal words (DANGER, WARNING and CAUTION) areused to identify levels of hazard seriousness. Definitionsfor identifying hazard levels are provided below with theirrespective signal words.

% DANGER:Immediate hazards which WILL result in severepersonal injury or death.

& CAUTION:Hazards or unsafe practices which COULD result insevere personal injury or death.

$ WARNING:Hazards or unsafe practices which COULD result inminor personal injury or product or property damage.

NOTE:Useful information for operation and/or maintenance.

It is assumed that these heat pump air conditioners will beoperated and serviced by English speaking people. If this isnot the case, the customer should add safety, caution andoperating signs in the native language.If you have any questions, contact your distributor or dealerof HITACHI.This manual gives a common description and information forthis heat pump air conditioner which you operate as well asfor other models.These heat pump air conditioners have been designed for thefollowing temperatures. Operate the heat pump airconditioner within this range.

Temperature Range (°C):

Maximum MinimumIndoor 30 DB / 25 WB 21.5 DB / 15 WBCooling

Operation Outdoor 43 DB -5 DB *1)Indoor 27 DB 15 DBHeating

Operation outdoor 15 WB -15 WB *2)

*1): 10DB ~ -5DB (Operation Control Range)*2): -10WB ~ -15WB (Operation Control Range)DB: Dry Bulb, WB: Wet Bulb

SAFETY SUMMARY

% DANGER:� Use refrigerant R407C in the refrigerant cycle. Do

not charge oxygen, acetylene or other flammableand poisonous gases into the refrigerant cycle whenperforming a leakage test or an air-tight test. Thesetypes of gases are extremely dangerous and cancause an explosion. It is recommended thatcompressed air, nitrogen or refrigerant be used forthese types of tests.

� Do not pour water into the indoor unit, outdoor unitor CH unit. These products are equipped withelectrical parts. If poured, it will cause a seriouselectrical shock.

� Do not touch or adjust safety devices inside theindoor or outdoor units. If these devices are touchedor readjusted, it may cause a serious accident.

� Do not open the service cover or access panel forthe indoor or outdoor units without turning OFF themain power supply.

� Refrigerant leakage can cause difficulty withbreathing due to insufficient air. Turn OFF the mainswitch, put out fire at once and contact your servicecontractor, if refrigerant leakage occurs.

� The installer and system specialist shall securesafety against leakage according to local regulationsor standards.

$ WARNING:� Do not use any sprays such as insecticide, lacquer,

hair spray or other flammable gases withinapproximately one (1) meter from the system.

� If circuit breaker or fuse is often activated, stop thesystem and contact your service contractor.

� Do not perform installation work, refrigerant pipingwork, drain piping and electrical wiring connectionwithout referring to our installation manual.

� Check that the ground wire is securely connected.Connect a fuse of specified capacity. Do not put anyforeign material on the unit or inside the unit. Makesure that the outdoor unit is not covered with snowor ice, before operation.

& CAUTION:� Do not install the indoor unit, outdoor unit, CH unit,

remote control switch and cable withinapproximately 3 meters from strong electromagneticwave radiators such as medical equipment.

� Supply electrical power to the system to energizethe oil heater for 12 hours before start-up after along shutdown.

NOTE:� It is recommended that the room be ventilated every

3 to 4 hours.� The heating capacity of the heat pump unit declines

according to the outdoor air temperature. Therefore,it is recommended that auxiliary heating equipmentbe used in the field when the unit is installed in a lowtemperature region.

2 IMPORTANT NOTICE

REFERENCE TO FSG Series

This manual is intended as an extension of TechnicalCatalogue for FSG Series. It contains specific data related toCooling / Heating Changeover Unit (CH) and Outdoor UnitsRAS-8FXG and RAS-10FXG.

Whenever you see this mark:

Details for reference

Please, refer to Technical Catalogue for FSG Series.

�CONTENTS 1

0.�CONTENTS

PART I TECHNICAL DATA

1. FEATURES1.1. System Features 1-11.2. H-LINK System 1-31.3. Features on Indoor Units and Outdoor Units *1.4. Name of parts 1-11

* (See manual for FSG Series)

2 GENERAL DATA2.1 General Data for Indoor Units *2.2 General Data for Outdoors Units 2-22.3 Component Data 2-32.4 Component Detailed Data 2-3


3 DIMENSIONAL DATA3.1 Indoor Unit *3.2 CH Unit 3-13.3 Outdoor Unit 3-2


4 SELECTION DATA4.1 Operation Space 4-14.2 Center of Gravity 4-14.3 Cooling/Heating Performance at Various

Combinations 4-24.4 Outdoor Unit Capacity with Total

Horsepower of Combined Indoor Unit *4.5 Capacity Characteristic Curves of

Outdoor Units 4-44.6 Cooling Capacity Table of 100%

Combination 4-54.7 Heating Capacity Table of 100%

Combination 4-64.8 Correction Factor According to

Piping Length 4-74.9 Sensible Heat Factor (SHF) *4.10 Correction factor for defrosting operation 4-94.11 Fan performance *


5. SOUND DATAIndoor Unit *Outdoor Unit 5-1* (See manual for FSG Series)

6. WORKING RANGE6.1. Power supply 6-1

7 ELECTRICAL DATAIndoor Unit *Outdoor Unit 7-1* (See manual for FSG Series)

8 ELECTRICAL WIRING DIAGRAMSFor RAS-8FXG and RAS-10FXG 8-1For CH-4.0GE and CH-6.5GE 8-2

9 CONTROL SYSTEM9.1 Refrigerant Cycle (Example: RAS-10FXG) 9-19.2 Device Control System 9-39.3 Standard Operation Sequence 9-49.4 Gas Bypass Control 9-129.5 Protection and Safety Control 9-139.6 Safety and Control Device Setting 9-13

10 REMOTE CONTROLLERS OPERATION10.1 Liquid Crystal Remote Control Switch

(PC-2H2) *10.2 Optional Remote Controller (PC-5H) *10.3 Optional Wireless remote *10.4 Optional 7-DAY TIMER (PSC-3T) *10.5 Optional central Station (PSC-3S1) *10.6 Optional Accessories for RCS *

Remote Control Cable (PRC-10E~PRC-30E) *3P Connector Cable (PCC-1) ** (See manual for FSG Series)

PART II INSTALLATION DATA

11. UNITS INSTALLATION11.1. General Check *11.2. RPI (In-the-Ceiling) *11.3. RCI (4-Way Cassette Type) *11.4. RCD (2-Way Cassette Type) *11.5. RPK (Wall Type) *11.6. RPF (Floor Type) / RPFI (Floor Concealed

Type) *11.7. RPC (Ceiling Type) *11.8. RAS (Outdoor Unit) 11-211.9 Transportation and Installation of CH Unit 11-311.10 Installation of Optional Air Panel *11.11. Installation Instruction for Drain-Up Kit 11-7


12. REFRIGERANT PIPING ANDREFRIGERANT CHARGE

12.1. Piping System and Multi-Kit 12-112.2. Refrigerant Piping Work for Indoor Unit *12.3 Refrigerant piping Work for Outdoor Unit 12-1412.4 Refrigerant piping Work for CH Unit 12-1812.5. Caution on Refrigerant Leakage 12-2012.6 Special Attention Regarding

new Refrigerant 12-2112.7 Drain piping *


13. DRAIN PIPING13.1. General *13.2. RPI (In-the-Ceiling Type) *13.3. RCI (4-Way Cassette Type) *13.4. RCD (2-Way Cassette Type) *13.5. RPK (Wall Type) *13.6. RPF and RPFI (Floor Type and Floor

Concealed Type) *13.7. RPC (Ceiling Type) *13.8. Outdoor Unit Drain-Kit (DBS-26) *


14. ELECTRICAL WIRING14.1. Common Wiring 14-114.2. Electrical Wiring for Indoor Unit *14.3. Electrical wiring for outdoor unit 14-514.3 Electrical wiring for CH unit 14-8


�2 CONTENTS

15. INSTALLATION OF OPTIONAL REMOTECONTROLLER

15.1. Installation of Remote Control Switch<PC-2H2> *

15.2. Wiring System for Optional Remote ControlSwitch (PC-2H2) *

15.3. Installation of Remote Control Switch (Core-Function) <PC-5H> *

15.4. Installation of 7-day Timer <PSC-3T> *15.5. Wiring system for optional 7-day timer

(PSC-3T) *15.6. Installation of central station <psc-3s1> *15.7. Wiring System for Optional Central Station

(PSC-3S1) *15.8. Installation of Receiver Kit <PC-RLH4> *


16. TEST RUN16.1. Checking Before Test Run 16-116.2. Test run procedure by remote control

switch 16-116.3. Test run procedure by wireless remote

control switch (PC-LH3) 16-216.4. Test run procedure by remote control switch

<core-function> (PC-5H) 16-516.5. Test run from outdoor unit side 16-716.6. Checking of the refrigerant quantity for

FXG system 16-9

17. TROUBLESHOOTING17.1. Initial Troubleshooting 17-117.2. Troubleshooting by Alarm Code 17-117.3. Troubleshooting in Check mode 17-317.4. Troubleshooting by 7-segment display 17-917.5. Protection control code on 7-segment

display 17-1517.6. Self checking of PCB’s using Remote

Control Switch 17-1717.7. Self Checking of Remote Control Switch *


18. MAINTENANCE18.1. Regular Inspection *18.2. Filter Cleaning *


19. MISCELLANEOUS NOTES19.1. Special Notes 19-119.2 Attention for Set-Free Series 19-2

20. STANDARD SPECIFICATIONS

MODELS CODIFICATION Important note: Please check, according to the model name, which is your air conditioner typeand how it is abbreviated and referred to in this technical catalogue.

INDOOR UNITS

In-the ceilingtype

4-waycassette type

2-waycassette type

Wall type Floor type Concealed type Ceiling type

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1FEATURES 1

1.�FEATURES

1.1.�SYSTEM FEATURES

HI-MULTI SET-FREE FOR SMALL/MEDIUMOFFICE BUILDINGS

HITACHI proudly introduces the NEW FXG series of thehighly-efficient and reliable air conditioning system,”HI-MULTI SET-FREE” providing simultaneous Cooling andHeating operation independently and providing comfortableair with the power saving operation for small and mediumoffice buildings. Recently, increased numbers of buildingsare requiring ”Intelligent” facilities - communication networks,office automation, including a comfortable environment.Particularly, comfortable space is required all the day throughthe year in office buildings. This multi-split system airconditioner, ”HI-MULTI SET-FREE” can meet theserequirements. The proven combination of the scrollcompressor and the inverter provides the best airconditioning for small / medium office buildings

FXG Series - Uses of the HFC series new R407CRefrigerantHITACHI has developed and introduced the new SET-FREEFXG series to meet the global needs to help protect theEarth’s environment by using non-ozone depletingrefrigerant, R407C as HITACHI’s standard series.

Various Indoor Units and CombinationsThe common Indoor Units for FXG; 35 Indoor Units in 7types as shown below, can be connected to the new FXGseries Outdoor units to meet various building requirements.(0.8HP through 5.0HP)

n� Code meaning

NOTE: Select the indoor units and outdoor unit so as the total indoor horsepower is near to the outdoor horsepower

Nominal Horsepower (HP)Indoor UnitType

Model0.8 1.0 1.5 2.0 2.5 3.0 4.0 5.0

In-the-Ceiling RPI á á á á á á á á

4-Way Cassette RCI á á á á á á á

2-Way Cassette RCD á á á á á á á

Wall RPK á á á á2.3

Floor RPF á á

Floor Concealed RPFI á á

Ceiling RPC á á á á áNote: Regarding the standard and optional dip switch setting, refer to “Setting of Dip

Switches for Indoor Unit” in chapter 14 page 5á = Available

Able to Connect One Outdoor Unit with up to 12 Indoor UnitsUtilizing inverter control, a wide range of operation capacitycontrol is available.A maximum total combination horsepower of 130% and aminimum total combination horsepower of 50% can be

chosen by a combination of indoor units when compared withthe nominal outdoor unit capacity. Therefore, the new systemcan meet individual air conditioning requirements in mostoffice buildings.

Indoor Unit

Outdoor Unit ModelMinimumCombinationHorsepower (HP)

MaximumCombinationHorsepower (HP)

MinimumCombinationof Indoor Unit

MaximumCombinationof Indoor Unit

MinimumIndividualOperationHorsepower (HP)

RAS-8FXG 4.0 10.4 2 12 0.8

RAS-10FXG 5.0 13.0 2 12 0.8

0.8 Less than 4.0 1 3* 0.8CH UnitModel

CH-4.0GECH-6.5GE 0.8 Less than 6.5 1 6* 0.8

* Simultaneous operation of cooling (dry) and heating is not available.

Unit Type(Outdoor)

Refrigerant R407C

HI-MULTI Set-free Three PipesHorse Power (HP)

Unit Type(Indoor)

HI-MULTI Set-free H-Link System

Horse Power (HP)

Made in:

Malaysia

Europe

(blank) Japan

12 FEATURES

Great Power Saving Due to Heat Recovery SystemHEATING ALL

■� Independent cooling or Heating Operation

The FXG system consists of multiple Indoor Units, multi-Kits,CH unit and one Outdoor Unit. According to head loadconditions, refrigerant flow is changed by activation of the CHunits, and cooling operation is available independently.Therefore, this system offers great power saving due to aheat recovery system when heating load and cooling loadare balanced

CH Unit to Change Refrigerant Cycle

MAINLY COOLING EVENLY COOLING AND HEATING

MAINLY HEATING COOLING ALL

Note:The Indoor Unit connected to the same CH unit can beoperated and stopped simultaneously, however, can notbe operated in simultaneous operation of cooling andheating

Cooling Cooling Cooling Heating

Liquid

Gas (Low)

Gas (High)

CHUnit

IndoorUnit

Outdoor Unit

A: AccumulatorC: CompressorR: Receiver

Cooling Cooling Heating Heating

Liquid

Gas (Low)

Gas (High)

CHUnit

IndoorUnit

Outdoor Unit



Liquid

Gas (Low)

Gas (High)

CHUnit

IndoorUnit

Outdoor Unit


Heating Heating Heating Cooling

Liquid

Gas (Low)

Gas (High)

CHUnit

IndoorUnit

Outdoor Unit


Cooling Cooling Cooling Cooling

Liquid

Gas (Low)

Gas (High)

CHUnit

IndoorUnit

Outdoor Unit



Liquid

Gas (Low)

Gas (High)

CHUnit

IndoorUnit

Outdoor Unit


1FEATURES 3

1.2.�H-LINK SYSTEM

The new H-LINK wiring system requires only twotransmission wires connecting each CH unit and outdoor unitfor up to 16 refrigerant cycles, and connecting wires for allindoor units and all outdoor units in series.

■� The total wiring length is remarkably reduced.

■� Only one connection is required for the wiringbetween the indoor unit and outdoor unit.

■� Easy wiring connection to the central controllers

Example of H-LINK System

Specifications:Transmission Wire: 2 - Wire

Polarity of Transmission Wire: Non - Polar Wire

Maximum Outdoor Units 16 Units per system

Maximum Indoor Units 12 Units per cycle and128 Units per H-LINK System

Maximum Wiring Length: Total 1 000 m (including CS-NET)

Recommended Cable: Twist Pair Cable with Shield, over0,75 mm² (Equivalent to KPEV-S)

Voltage: DC5V

Note:In case of applying H-LINK system, The setting of dipswitches is required (Refer to chapter 14 for setting).If the dip switches are not set or set incorrectly, the alarmmay occur due to the transmission failure.

Setting of End Terminal Resistance

Before shipment, set No.1 pin of DSW10 at the "ON" side. Inthe Case that the outdoor units quantity in the same H-link is2 or more, set No.1 pin of DSW10 at the "OFF" side from the2nd unit. If only one outdoor unit is used, no setting isrequired.

New transmission system

A non-polar 2-wire cable is applied for the transmission wiresconnecting indoor units and outdoor unit. Miswiring byinverting connections 1 and 2 is eliminated.

Wide Operation Range

This unit has been designed for cooling operation under lowambient temperatures down to -5 ºC.This feature enables cooling to be obtained even in winter onbuildings with high internal heat gains due to lighting, peopleand machines, particularly in areas such as shops, lecturerooms, data processing areas etc.And the heating operation under low ambient temperaturedown to -15 ºC can be also performed.

Low Sound by PWM (Pulse Width Modulation) Control

Fan motor control by PWM (Pulse Width Modulation) hasrealized low electromagnetic sounds. The voltage applied tothe fan motor is controlled by chopping (ON/OFF) the powersupply voltage at a high frequency of 20kHz.Therefore, the wave pattern is almost sinusoidal, the torquefluctuation is very smooth and a remarkable low level ofelectromagnetic noise is achieved.

PWM Ware Pattern

Outdoor Unit

TransmissionWires

Refrigerant Piping

Indoor Units

: One Refrigerant Cycle

Power supply Pattern

Effective Voltage

20 kHz (20,000 times per second)

Setting of End Terminal ResistanceDSW10

Before Shipment Cancellation

Only for pull-down Operation

Outdoor AirWet BulbTemperature(°C WB)

Outdoor AirDry BulbTemperature(°C DB)

Indoor suction air Wet BulbTemperature (°C WB)

Indoor suction air Dry BulbTemperature (°C DB)

: Operation Control Range

14 FEATURES

Basic Circuit of PWM

Lower Sound Operation during Night Time

Through computer simulation of fluid turbulence which is themain source of unwanted noise, and by visual observation offluid flow, operation sound has been thoroughly analyzed.By improvement of the cabinet structure and fan shape, andby the adoption of a new material and inverter, operationsound has been reduced.

Low Operation Sound Resulting from New Fan Shapeand Propeller Fan Material

The most appropriate fan shape for smooth air flow has beenresearched. Consequently, a new fan shape has beendeveloped to minimize air turbulence around the propellerfan. Also, a new material of MRP (Mica polypropylene) whichminimizes vibration characteristics against vibration soundhas been adopted, and a laminated surface preventsturbulent flow. This combination has resulted in a lowoperation sound which was almost impossible in the previousunits.

Propeller Fan

Low Sound Operation by Low Noise Fan Motor

In order to minimize electromagnetic sounds, research wasthoroughly performed on the materials to be used for theassembled fan motor.Consequently, aluminium die-casting was selected and a lowsound operation has been achieved without decreasing theoperation performance. Also, a non-resonance suspensionstructure has been adopted to support the fan motor. Due tothis structure, the vibration sound has been minimized.

High Durability

The twin scroll compressors with the outer oil supply systemand the oil separator are applied as same as FSG series.Therefore, the oil is directly supplied to the compressors andthe reliability is increased moreover.

Grade-up on Flexibility and Comfortability

Able to Establish Air Conditioning Systems for VariousRequirements

A maximum piping length of 100 meters and maximum lift of50 meters between the indoor units and outdoor unit areapplicable, and a maximum lift of 15 meters, which is almostequivalent to a 4 floor height, between indoor units isavailable

Piping System for FXG Series

System Example 1: Line Branch System

System Example 2: Header Branch System

System Example 3: Combination Branch System

Powersupply

RegenerationPart

ChopperPart

Motor

Operation in thesame mode

CH Unit

Operation in thesame mode

CH Unit

CH Unit

1FEATURES 5

Greatly Minimized Piping Work by HITACHI "Uni-PipingSystem"The new "Uni-Piping" where the same size pipe as the mainrefrigerant pipe can be utilized, has been developed. Due tothis single size, piping work has been greatly simplified.Also, from the point of design, complicated piping selectionhas been minimized. Only two refrigerant pipes in therefrigeration cycle are required. Various piping connectionsets are also available according to field requirements.Due to these improvements, various problems duringinstallation have been solved. The new HITACHI "Uni-PipingSystem" is the epoch-making system which saves installationtime and labour.The "Down-Size Piping System" is not available for FXGsystem. (The "Down-Size Piping System" is available only forFSG system.)

�� Line Branch 1 (Uni-Piping)

Indoor Unit (In the same operation mode)

Table 1:

Low Gas / High Gas /Liquid Piping Size Ø

Model ofMulti-KitApplicable

Modela ~ d A ~ D

RAS-8FXG 25.4 (22.2) / 19.05 / 12.7 E-82XMERAS-10FXG 28.6 / 19.05 / 12.7 E-102XME

Table 2:

Gas / Liquid Piping Size Ø Model of Multi-KitCH UnitModel e ~ f E ~ F

CH-4.0GE 15.88 / 9.53 E-42MECH-6.5GE 19.05 / 9.53 E-52ME

�� Header Branch

Combination of CH Unit and Indoor Unit

Table 3:

Model of Multi-KitApplicableModel

Low Gas / High Gas /Liquid Piping Size Ø 2~8 Branches

RAS-8FXG 25.4 (22.2) / 19.05 / 12.7RAS-10FXG 28.6 / 19.05 / 12.7

E-88XE3

Table 4. CH Unit~Indoor Unit:

Indoor UnitCapacity

Pipe Size («mm)(Gas / Liquid) *2

Max. Length ofLiquid Pipe *3

0.8 and 1.0HP 12.7 / 6.35 *1 30m1.5HP 12.7 / 6.35 *1 15m

2.0 and 2.3HP 15.88 / 6.35 *1 15m2.5 and 3.0HP 15.88 / 9.53 30m4.0 and 5.0HP 19.05 / 9.53 30m

The pipe size shall be the same size of the piping connection hole ofthe Indoor Unit*1): In the case that the liquid pipe for the Indoor Unit with the

capacity of 1.5HP~2.3HP is longer than 15m, use the pipe with adiameter of «9.53.

*2): The pipe sizes shown in the above table is applicable for boththe line branch and the header branch.

*3): The piping length between the last multi-kit and the farthestIndoor unit shall be within 5m.

Possible to Extend Longer Refrigerant Piping to MeetNeeds for Tall Buildings

The actual piping can be extended up to 100 meters(equivalent piping length: 125 meters).Lift between the indoor and outdoor unit can also beextended up to 50 meters, and the lift between indoor unitscan be extended up to 15 meters. Therefore, more variablepiping systems are available.The liquid piping for the indoor units up to 2.0HP has beendown-sized to 6.35mm as the outer diameter. Also, gaspiping for the indoor units up to 1.5HP has been down-sizedto 12.7mm as the outer diameter, resulting in simplifiedrefrigerant piping work and a smaller of refrigerant charge.

See Table 1

SeeTable 2

CH Unit

Indoor Unit

CH Unit

Indoor Unit

Outdoor Unit

OutdoorUnit

See Table 3

16 FEATURES

Multiple Capacity Control

To effectively operate the indoor units, the most appropriaterefrigerant flow volume is controlled by the number ofoperating indoor units.By sensing the air temperature difference between the inletand outlet of the indoor unit, the electronic expansionopening is controlled to supply the most appropriaterefrigerant flow volume. All units can be operated accordingto their separate operating conditions.Due to the new control method, we are able to provide 15meters (all most equal to a 4 floor height) lift between indoorunits, resulting in flexible installation. (CH units shall beinstalled in the same floor.)

LO-I:100 mHO-I: 50 m (When outdoor is

higher than indoorunit)40 m (When indoor ishigher than outdoorunit)

HI-I: 15 m

Precise Control with the Wide Range Inverter Evenfor Small Air Conditioning Space

The compressor speed for FXG series outdoor unit iscontrolled within a wide range of from 30Hz to 115Hz.Therefore, smooth operation is available without frequentlyusing the ON/OFF control. This new wide range capacitycontrol can meet not only the needs of a wide space but alsoa small space such as guest rooms and management rooms.Defrosting operation can be quickly performed because of ahigh compressor speed of 115Hz.

Standard Unit

Inverter-Driver Unit

CH Units

Indoor Unit

Outdoor Unit 10 Hp

Outdoor Units

Inlet Air Temperature

Outlet Air Temperature

Time10 min.

Cooling Operation(Setting Temperatureof Thermostat: 23 ºC

Cooling Operation(Setting Temperatureof Thermostat: 23 ºC)

Inverter Frequency

Inlet Air Temperature

Outlet Air Temperature

Time10 min.

Indoor Units

1FEATURES 7

ELECTRONIC CAPACITY CONTROL

The capacity of the 8 and 10HP outdoor unit is continuouslycontrolled by the inverter from 26% to 100%. This wideworking range has been obtained by the improvement ofshaft strength and high pressure oil circulation in the scrollcompressor.Therefore, an air conditioning system where heat load isgreatly changed through the day is easily catered for.

Also, the capacity of each indoor unit is controlled bydetecting the inlet and outlet temperatures using anelectronic expansion valve. Therefore even a small roomdown to a 0.8HP indoor unit can be air conditioned withoutunwanted ON/OFF operation, resulting in comfortable airconditioning.

RPI-0,8FSGE(Director Room)

RCI-1.5FSGE(Reception Room)

STOP

RCI-2.5FSGE(Office)STOP



Less ON-OFFEnsuring Comfort

Operation

Capacity Control (10%: 8HP, 8%:10HP of outdoor unit capacity) of Director Roomis still possible.

Individual Operation at Minimum Indoor Unit power

The electronic expansion valves installed not only in theoutdoor unit, but also in each indoor unit, control therefrigerant flow. They offer individual operation of the indoorunit, with 0.8HP as a minimum for 8HP and 10HP outdoorunit.

Inverter Control of 10 HP Outdoor Unit115Hz ➠ 30Hz (26%)

å Improvement ofShaft Strength

WideOperatingRange � High Pressure Oil

Circulation

Capacity Control of Ref. Cycle18% ➠ 10% (8HP)17% ➠ 8% (10HP)

8%

18 FEATURES

Drying Operation Control

This system combining the inverter speed control with indoorair volume control performs efficient dehumidification withnegligible change in room temperature.

Dry operation by Inverter Control

Emergency Operation

The twin scroll compressors are applied as same as FSGseries, therefore, in case that one of two compressors stops,it is possible to operate the normal compressor as anemergency operation.

Constant speedComp. Trouble

Inverter Comp.Trouble

Remove Wiringfrom Terminals of

Inverter Comp.

Set Dip Switches on PCB and Start Unit.

Note:Total capacity of Indoor units must be over 50% ofoutdoor unit capacity.

Trial Operation and Self-Diagnosing by Multi-FunctionRemote Control Switch and Printed Circuit Board inOutdoor Unit

A high quality control by the new remote control switch hasbeen developed. The self-diagnosing function, whichenables quick checking of operation conditions in the indoorunits and outdoor unit, has been newly equipped.Furthermore, alarm data can be put into the memory of amicro-computer when an abnormality occurs. A self-diagnosing function for printed circuit boards is also available.Various operation data such as high pressure, low pressure,etc. are indicated on the 7-segments on the printed circuitboard in the outdoor unit.By these functions, saving of maintenance period and labourduring the trial operation and servicing has been achieved.

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Self-Diagnosing Function

Diagnosing using the 7-Segment Display in Outdoor Unit

The PCB in the outdoor unit is equipped with three 7-segment displays. This display indicates various operatingmodes such as:

■� 2XWGRRU�$LU�7HPSHUDWXUH

■� 'LVFKDUJH�*DV�7HPSHUDWXUH

■� (YDSRUDWLQJ�7HPSHUDWXUH�GXULQJ�+HDWLQJ�2SHUDWLRQ

■� &RQGHQVLQJ�7HPSHUDWXUH

■� 'LVFKDUJH�3UHVVXUH

■� 6XFWLRQ�3UHVVXUH

■� &RPSUHVVRU�5XQ�7LPH

Therefore, quick and accurate diagnosing is available at thesite during the trial operation or normal operation.

Air Conditioning Drying Air Conditioning

Hum

idity

(%

)R

oom

Tem

pera

ture

(ºC

)

Time (hours)

7 segment display

1FEATURES 9

HITACHI Computer Controlled Network System -CS-NET Version 5-

The CS-NET is the newly developed Computer ControlledNetwork System from HITACHI for SET-FREE multi-split airconditioners.

■� 8S�WR��RXWGRRU�XQLWV�WR�EH�FRQWUROOHG�SHU�+�/,1.�%RDUG

■� 8S�WR��LQGRRU�XQLWV�SHU�+�/,1.

■� &RPPXQLFDWLRQ�ZLWK�VHUYLFH�SDUWQHU

■� 7KH�&6�1(7�FDQ�EH�FRQQHFWHG�WR�DQ\�SRLQW�LQ�WKH�+�/LQN6\VWHP

System Example 1: Outdoor Units -16

TransmissionWires

16 Outdoor Units

Max. 128 Indoor Units

Outdoor Unit

Refrigerant Piping

Connected to any point

H-Link board inside PC in ISA slot: One Refrigerant Cycle

110 FEATURES

1.3.�FEATURES ON INDOOR UNITS AND OUTDOOR UNITS

1.3.1.� IN-THE-CEILING TYPE

1.3.2.� FOUR-WAY CASSETTE TYPE

1.3.3.� TWO-WAY CASSETTE TYPE

1.3.4.� WALL TYPE

1.3.5.� FLOOR TYPE

1.3.6.� FLOOR CONCEALED TYPE

1.3.7.� CEILING TYPE

All data related to Indoor Units can befound in Technical Catalogue for FSG,

1.3.8.� SLIM AND COMPACT OUTDOOR UNITIn-line installation is possible due to the structure of a rearintake and upward discharge design.Even a limited space can be effectively utilized.

FXG

8HP, 10HP Comparison with current model (FX series, 10HP)

Installation Space: 0,72 m² Three Outdoor units (new model: FXG) can be installed at the same space whereonly two outdoor Units (current model: FX) can be installed

: The dotted lineshows the currentmodel

Over 2850 + 20(New)

Over 2850 + 20(Current)

1FEATURES 11

1.4.�NAME OF PARTS

1.4.1.� INDOOR UNITS


1.4.2.� OUTDOOR UNITS

n� RAS-8FXG, RAS-10FXG

No. Part Name No. Part Name1 Compressor inverter 17 Check Joint (High)2 Compressor constant speed 18 Check Joint (for Oil separator)3 Heat exchanger 19 Solenoid valve (Gas Bypass)4 Propeller Fan 20 Solenoid valve (Gas Bypass)5 Fan Motor 21 Electrical Box6 Accumulator 22 Low Pressure Sensor7 Oil Separator 23 High Pressure Sensor8 Micro-Computer Control Ex. Valve For Lower H. Ex. 24 High Pressure Switch for Protection9 Micro-Computer Control Ex. Valve For Upper H. Ex. 25 Strainer (3/8)

10 Micro-Computer Control Ex. Valve For Gas Bypass 26 Strainer (1/2)11 Reversing Valve 27 Strainer (3/4)12 Stop Valve Low Pressure Gas Line 28 Check Valve (5/8)13 Stop Valve High Pressure Gas Line 29 Sight Glass14 Stop Valve Liquid Line 30 Dryer15 Liquid Receiver 31 Oil Heater (for Oil Separator)16 Check Joint (Low) 32 Crankcase Heater (for Compressor)

Air Inlet

Air Outlet

2GENERAL DATA 1

2.�GENERAL DATA

2.1.� GENERAL DATA FOR INDOOR UNITS

n� RPI In-The-Ceiling Type

n� RCI 4-Way Cassette Type

n� RCD 2-Way Cassette Type

n� RPK Wall Type

n� RPF Floor Type

n� RPFI Floor Concealed Type

n� RPC Ceiling Type


22 GENERAL DATA

2.2.� GENERAL DATA FOR OUTDOOR UNITS

n� RAS - Outdoors Unit

Model RAS-8FXG RAS-10FXGPower Supply AC 3Ø, 380-415V, 50Hz

Nominal CoolingCapacity *1)

kWkcal/hBtu/h

23.320,00079,500

29.125,00099,300

Nominal CoolingCapacity *2)

kWkcal/hBtu/h

22.619,40077,100

28.324,30096,600

Nominal HeatingCapacity

kWkcal/hBtu/h

26.122,40089,100

32.628,000

111,300Cabinet

Color (MUNSELL Code)Synthetic Resin Paint Baked on Galvanized Steel Plate

Beige (2.5Y 8/2)Sound Pressure Level(Overall A Scale) dB 56 58Outer Dimensions

Height mm 1,645 1,645Width mm 950 950Depth mm 750 750

Net Weight kg 295 300Refrigerant Flow Control

R407C Micro-Computer Control Expansion Valve

Compressor Hermetic (Scroll)Model G402DHVM+G401DHM G402DHVM+G501DHMQuantity 1+1 1+1Motor Output (Pole) kW 3.0+3.0 (2) 3.0+3.75 (2)

Heat Exchanger Multi-Pass Cross-Finned TubeCondenser Fan Propeller Fan

Quantity 1 1Air Flow Rate m³/min

(cfm)138

(4.874)172

(6.074)Motor Output (Pole) W 275(6) 275(6)

Refrigerant Piping Flare-Nut Connection (With Flare Nuts)Liquid Line mm

(in.)Ø12.7(1/2)

Ø12.7(1/2)

Gas Line LowPressure

mm(in.)

Ø25.4 or Ø22.2(1 or 7/8)

Ø28.6(1-1/8)

HighPressure

mm(in.)

Ø19.05(3/4)

Ø19.05(3/4)

Refrigerant Charge kg 15.5 17.0Wiring Holes

Power Supply mm Ø56 Ø56Control Circuit mm Ø26.5 Ø26.5

Connecting Wire between Indoorand Outdoor Unit

2 2

ApproximatePacking Measurement m³ 1.46 1.46

NOTES:1. The nominal cooling and heating capacity is the combined capacity of the HITACHI standard split system, and are based on the JIS

standard B8616-1984.Cooling Operation Conditions Indoor Air Inlet Temperature: 27.0 °C DB (*1) 19.5 °C WB (*2) 19.0 °C WBOutdoor Air Inlet Temperature: 35.0 °C DB

Heating Operation ConditionsIndoor Air Inlet Temperature: 20.0 °C DBOutdoor Air Inlet Temperature: 7.0 °C DB

6.0 °C WBPiping Length: 5 meters; Piping Lift: 0 meterDB: Dry Bulb; WB: Wet Bulb

2. The Sound Pressure Level is based on the following conditions:1 meter from the unit service cover surface, and 1.5 meters from floor levelThe above data are based in cooling operation mode. In case of heating operation mode, the sound pressure level increasesapproximately 1~2 dB.Voltage of the power source is 380V.In case of the power source of 415V, the sound pressure level increases by about 1 dB.The above data was measured in an anechoic chamber so that reflected sound should be taken into consideration when installing the unit.

2GENERAL DATA 3

2.3.� COMPONENT DATA

n� Indoor Heat exchanger and Fan

All data related to Indoor HeatExchanger and Fan can be found inTechnical Catalogue for FSG,

n� Outdoor Heat exchanger and Fan

Model RAS-8FXG RAS-10FXG

Heat Exchanger Type Multi-Pass Cross Finned Tube

Tube Material Cooper Tube

Outer Diameter mm Ø9.53 Ø9.53

Rows 2 2

Number of Tube/Coil 112 112

Fin Material Aluminum

Pitch mm 2 2

Maximum Operating Pressure MPa 3.3 3.3

Total Face Area m² 1.65 2.03

Number of Coil/Unit 1 1

Outdoor Fan Propeller Fan

Number/Unit 1 1

Outer Diameter mm 640 640

Revolution (240V, 50Hz) rpm 740 820

Nominal Air Flow m³/min 138 172

Outdoor Fan Motor Drip-Proof Type Enclosure

Starting Method PSC (Permanent Split Capacitor)

Nominal Output (50/60Hz) W 275 275

Quantity 1 1

Insulation Class E E

2.4.� COMPONENT DETAILED DATA

n� Compressor

Compressor Model G402DHVM G401DHM G501DHM

Type Hermetic Scroll Type

Air Tight Pressure

Discharge (MPa) 3.3 3.3 3.3

Suction (MPA) 1.6 1.6 1.6

Motor Type Special Squirrel-Cage Three-Phase Motor

Starting Method I.D. DOL DOL

Poles 2 2 2

Insulation E E E

Oil Type FVB68D

Charge (Liters) 7.0*

I.D.: Inverter-DrivenDOL: Direct-on-Line*: Total Charged Quantity of the Outdoor Unit

�DIMENSIONAL DATA 1

3.�DIMENSIONAL DATA

3.1.�INDOOR UNIT

All data related to Indoor Units can befound in Technical Catalogue for FSG

3.2.�CH UNIT

5HPDUNV0DUN 1DPH

&+��*( &+��*(

1 Suspension Bracket for M8 or w5/16 Bolt

2 Refrigerant Gas (Low) Pipe connection 15.88 Flare connection 19.05 Flare connection

3 Refrigerant Gas (High) Pipe connection 12.7 Flare connection 15.88 Flare connection

4 Refrigerant Liquid Pipe connection 9.53 Flare connection

5 Refrigerant Gas Pipe connection 15.88 Flare connection 19.05 Flare connection

6 Refrigerant Liquid Pipe connection 9.53 Flare connection

7 Electrical Control Box

8 Hole for operating Line 26.5 at bottom side

9 Hole for power supply Line 26.5 at bottom side

Units:mm0RGHO 3LSH�/HQJWK

D

CH-4.0GE 68

CH-6.5GE 72

�2 DIMENSIONAL DATA

3.3.�OUTDOOR UNIT

■ 0RGHOV��5$6��);*�DQG�5$6��);*

Mark Name Remarks1 Service Cover


3a Refrigerant Gas (Low) Line Piping Connectionwith Øa mm Flare Nut

3b Refrigerant Gas (High) Line Piping Connectionwith Ø19.05 mm Flare Nut

4 Refrigerant Liquid Line Piping Connectionwith Ø12.7 mm Flare Nut

5 Hole for Refrigerant Piping 290 x 80 (mm)

6 Hole for Control Line Wiring Ø26.5 x 2 (mm)

7 Hole for Power Supply Wiring Ø56 mm

8 Hole for Condensate Drain Ø26 x 4 (mm)

9 Hole for Power Supply Wiring Ø52 mm

10 Holes for fixing to the floor 4

11 Hole for Refrigerant Piping 235 x 113 (mm)

View from A

FrontSide

RearSide

Service Space

A

Units: mm

Model Pipe sizea

RAS-8FXG 25.4 or 22.2

RAS-10FXG 28.6

127(�* Keep a space of 300mm between the outdoor

unit and the wall at the rear side, when therear side wall is smaller than 500mm.

�SELECTION DATA 1

4.�SELECTION DATA

4.1.�OPERATION SPACE

■ Indoor Units


■ Outdoor Units

Models: RAS-8FXG, RAS-10FXG

* Add the half of dimension h1 to 300mm for air intakespace of rear side, when the wall of rear side is higherthan 500mm.

* Add the half of dimension h2 to 1500 for air intakespace of front side when the wall front side is higherthan 1500 mm.

4.2.�CENTER OF GRAVITY

■ Outdoor UnitS

Models: RAS-8FXG Models: RAS-10FXG

Units: mm Units: mm

�2 SELECTION DATA

4.3.�COOLING/HEATING PERFORMANCE AT VARIOUS COMBINATIONS

4.3.1.� SELECTION GUIDE(1) Meaning of Model Name of Indoor Unit (referred in Features, Chapter 1 Page 1)

(2) Nominal Capacity of Indoor Units+RUVHSRZHU��+3�

&DSDFLW\ ��

CoolingCapacity

kWkcal/hBtu/h

2.32,0007,900

2.92,5009,900

4.43,800

15,100

5.85,000

19,800

6.75,800

22,900

7.36,300

25,000

8.77,500

29,700

11.610,00039,700

14.512,50049,600

HeatingCapacity

kWkcal/hBtu/h

2.62,2508,900

3.32,800

11,100

4.94,200

16,700

6.55,600

22,200

7.56,500

25,600

8.17,000

27,800

9.68,300

32,800

13.011,20044,400

16.314,00055,500

&DSDFLW\�$GMXVWPHQW�E\�'LS�6HWWLQJ+RUVHSRZHU��+3� ��

9DULDEOH�&DSDFLW\ ��→�� ←�� →�� ←�� ←�� →�� CoolingCapacity

kWkcal/hBtu/h

3.22,800

11,000

3.83,300

13,000

4.84,100

16,400

5.24,500

17,800

6.75,800

22,900

8.06,900

27,300HeatingCapacity

kWkcal/hBtu/h

3.63,100

12,300

4.23,600

14,300

5.34,600

18,100

5.64,800

19,100

7.56,500

25,600

9.07,800

30,7001 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4Dip Switch Setting

ON: , OFF:

(3) Nominal Capacity of Outdoor Units

0RGHO 5$6��);* 5$6��);*

Horsepower (HP) 8.0 10.0

CoolingCapacity

kWkcal/hBtu/h

23.320,00079,500

29.125,00099,300

HeatingCapacity

kWkcal/hBtu/h

26.122,40089,100

32.624,300

111,300

Nominal Capacity of Outdoor Unit is under the condition that the total indoor unit horsepower is same as outdoor unithorsepower.

(4) Outdoor Unit Capacity at Nominal Temperature<Correction Factor According to Total Indoor Unit Capacity>

If the total indoor unit horsepower is not same to the outdoor unit horsepower, refer to ”Capacity Characteristic Curve of OutdoorUnits” in item 4.4. The characteristic curve shows the value of:"[Outdoor Unit Capacity at Nominal Temperature] x [Correction Factor According Total Indoor Unit Capacity]"

��0D[LPXP�$FWXDO�&DSDFLW\�RI�2XWGRRU�8QLW

Maximum Actual Capacity of Outdoor Unit= [Outdoor Unit Capacity at Nominal Temperature

x Correction Factor According to Total Indoor Unit Capacity] ··· Refer to the item 4.4x Correction Factor According to Piping Length and Lift] ··· Refer to item 4.9x Correction Factor According to Temperature Condition] ··· Refer to the items 4.5 ~ 4.8

(6) Example (Given Condition)a. Total Load for Each Room Temperature Condition

,WHP 5RRP�� 5RRP�� 5RRP�� &RROLQJ +HDWLQJ

EstimatedCooling Load

kWkcal/h

6.285,400

8,487,300

10.709,200

EstimatedHeating Load

kWkcal/h

6.745,800

9.548,200

12.0010,320

Outdoor Air InletDry Bulb: 30 ºC

Indoor Air InletDry Bulb: 27 ºCWet Bulb: 19 ºC

Outdoor Air InletDry Bulb: 1 ºCWet Bulb: 0ºC

Indoor Air InletDry Bulb: 20 ºC

Equivalent Piping Length between Indoor Units and Outdoor Unit: 60mPiping Lift: 25mCorrection Factor of Cooling Capacity = 1.0Correction Factor of Heating Capacity = 0.94Correction factor according to piping length and lift = 0.85Power Source: 50Hz

�SELECTION DATA 3

b. Selecting Matching Indoor Units and Nominal Capacity

Select in-the-ceiling type indoor units. (Example)

,WHP 5RRP�� 5RRP�� 5RRP�� 2XWGRRU�8QLW6HOHFWHG�0RGHO 53,��)6*(�� 53,��)6*(�� 53,��)6*(�� 5$6��);*NominalCooling Capacity

kWkcal/h

8.47,500

11.610,000

14.512,500

34.530,000

29.125,000

NominalHeating Capacity

kWkcal/h

9.68,300

13.011,200

16.314,000

38.933,500

32.628,00

c. Outdoor Unit Capacity at Nominal Temperature<Correction Factor According to Total Indoor Unit Capacity>

In the case of the example of page 2, the total indoor horsepower is 12.0HP (=3.0HP+4.0HP+5.0HP).Therefore, the outdoor unit capacity at the nominal temperature which is selected from the ”Capacity Characteristic Curve” is29.5 kW (25,370 kcal/h) at the cooling operation, 35.4 kW (30,440 kcal/h) at the heating operation under nominal conditions.

d. Actual Capacity of Outdoor Unit

Maximum Actual Capacity of Outdoor Unit= [Outdoor Unit Capacity at Nominal Temperature

× Correction Factor According to Total Indoor Unit Capacity]× Correction Factor According to Piping Length and Lift× Correction Factor According to Temperature Condition

Refer to the table in item 4.6 and item 4.7 for Correction Factor according to the temperature condition.In the case of the example of page 2, each performance is as follows.

Cooling: [29.5 kW (25,370 kcal/h)] × 0.85 × 1.0 = 25.1 kW (21,600 kcal/h)Heating: [35.4 kW (30,440 kcal/h)] x 0.94 × 0.94 = 31.3 kW (26,900 kcal/h)

e. Actual Capacity of Each Indoor Unit

Actual Capacity of Each Indoor Unit= Actual Capacity of Outdoor Unit

× [Each Indoor Unit’s Horsepower÷ Summation of Each Indoor Unit Horsepower]

Example: <RPI-1.5FSGE>Cooling Capacity: 25.1 × (3.0[HP] ÷ (3.0[HP] + 4.0[HP] + 5[HP])) = 6.28 kW (5,400 kcal/h)Heating Capacity: 31.3 × (3.0[HP] ÷ (3.0[HP] + 4.0[HP] + 5[HP])) = 7.83 kW (6,730 kcal/h)

<RPI-2.0FSGE>Cooling Capacity: 25.1 × (4.0[HP] ÷ (3.0[HP] + 4.0[HP] + 5[HP])) = 8.37 kW (7,200 kcal/h)Heating Capacity: 31.3 × (4.0[HP] ÷ (3.0[HP] + 4.0[HP] + 5[HP])) = 10.43 kW (8,970 kcal/h)

<RPI-2.5FSGE>Cooling Capacity: 25.1 × (5.0[HP] ÷ (3.0[HP] + 4.0[HP] + 5[HP])) = 10.46 kW (8,990 kcal/h)Heating Capacity: 31.3 × (5.0[HP] ÷ (3.0[HP] + 4.0[HP] + 5[HP])) = 13.04 kW (11,220 kcal/h)

f. Result:

,WHP 5RRP�� 5RRP�� 5RRP��

6HOHFWHG�0RGHO 53,��)6*(�� 53,��)6*(�� 53,��)6*(��

ActualCapacity

Actual MaximumCooling Capacity

kWkcal/h

6.285,400

8.377,200

10.468,990

25.121,600

Actual MaximumHeating Capacity

kWkcal/h

7.836,730

10.438,970

13.0411,220

31.326,900

DesignLoad

EstimatedCooling Load

kWkcal/h

6.285,400

8.487,300

10.709,200

25.7022,100

EstimatedHeating Load

kWkcal/h

6.745,800

9.548,200

12.0010,320

28.5024,520

The actual capacity is nearly same or bigger than the design load, therefore, the selection of the example is allowable.

�4 SELECTION DATA

4.4.�OUTDOOR UNIT CAPACITY WITH TOTAL HORSEPOWER OF COMBINED INDOOR UNIT

All data related to Outdoor Unit Capacity with Total Horsepower ofCombined Indoor Unit for FXG Series are the same as for FSGSeries. Please refer to Technical Catalogue for FSG, Chapter 4.4

4.5.�CAPACITY CHARACTERISTIC CURVES OF OUTDOOR UNITS

The following charts show the characteristics of outdoor unit capacity which corresponds with total horsepower of combinedindoor unit, on standard condition with refrigerant piping of horizontal and 5m at length.See the examples of the actual combinations.

Cooling Capacity Heating Capacity

Cooling Characteristic Curve of RAS-8FXG Heating Characteristic Curve of RAS-8FXG

Co

olin

g C

apac

ity

Hea

tin

g C

apac

ity

Total Horsepower of Combined Indoor Units. Total Horsepower of Combined Indoor Units.

Cooling Characteristic Curve of RAS-10FXG Heating Characteristic Curve of RAS-10FXG

Co

olin

g C

apac

ity

Hea

tin

g C

apac

ity

Total Horsepower of Combined Indoor Units. Total Horsepower of Combined Indoor Units.

�SELECTION DATA 5

4.6.�COOLING CAPACITY TABLE OF 100% COMBINATION

Table 1. Cooling Capacity Table for RAS-8FXGUnit of Capacity: 1,000 kcal/h / kW (Correction Factor)

,QGRRU�$LU�,QOHW�:HW�%XOE��&�2XWGRRU�$LU�,QOHW'U\�%XOE��&� 16.0 18.5 19.0 19.5 20.0 22.0 24.0

25.0kcal/h

kW16.819.5 (0.86)

18.922.0 (0.97)

19.422.6 (1.00)

20.023.3 (1.03)

20.323.6 (1.05)

21.324.8 (1.10)

22.225.8 (1.14)

30.0kcal/h

kW16.819.5 (0.86)

18.922.0 (0.97)

19.422.6 (1.00)

20.023.3 (1.03)

20.323.6 (1.05)

21.324.8 (1.10)

22.225.8 (1.14)

35.0 kcal/hkW

16.819.5

(0.86) 18.922.0

(0.97) 19.422.6

(1.00) 20.023.3

(1.03) 20.323.6

(1.05) 21.324.8

(1.10) 22.225.8

(1.14)

40.0 kcal/hkW

16.018.6

(0.82) 18.321.3

(0.94) 18.721.8

(0.96) 19.222.3

(0.99) 19.522.7

(1.01) 20.624.0

(1.06) 21.625.1

(1.11)

Table 2. Cooling Capacity Table for RAS-10FXGUnit of Capacity: 1,000 kcal/h / kW (Correction Factor)

,QGRRU�$LU�,QOHW�:HW�%XOE��&�2XWGRRU�$LU�,QOHW'U\�%XOE��&� 16.0 18.5 19.0 19.5 20.0 22.0 24.0

25.0 kcal/hkW

21.024.4 (0.86) 23.6

27.4 (0.97) 24.328.3 (1.00) 25.0

29.1 (1.03) 25.429.5 (1.04) 26.6

30.9 (1.09) 27.832.3 (1.14)

30.0kcal/h

kW21.024.4 (0.86)

23.627.4 (0.97)

24.328.3 (1.00)

25.029.1 (1.03)

25.429.5 (1.04)

26.630.9 (1.09)

27.832.3 (1.14)

35.0kcal/h

kW21.024.4 (0.86)

23.627.4 (0.97)

24.328.3 (1.00)

25.029.1 (1.03)

25.429.5 (1.04)

26.630.9 (1.09)

27.832.3 (1.14)

40.0 kcal/hkW

20.023.3

(0.82) 22.826.5

(0.94) 23.427.3

(0.96) 24.027.9

(0.99) 24.428.4

(1.00) 25.830.0

(1.06) 27.031.4

(1.11)

�6 SELECTION DATA

4.7.�HEATING CAPACITY TABLE OF 100% COMBINATION

Table 1. Heating Capacity Table for RAS-8FXGUnit of Capacity: 1,000 kcal/h / kW (Correction Factor)

,QGRRU�$LU�,QOHW�'U\�%XOE��&�2XWGRRU�$LU�,QOHW:HW�%XOE��&� 16.0 18.0 20.0 21.0 22.0 24.0

-10.0 kcal/hkW

17.520.3 (0.78) 17.2

20.0 (0.77) 16.919.7 (0.76) 16.8

19.5 (0.75) 16.819.5 (0.75) 16.7

19.4 (0.74)

-5.0 kcal/hkW

19.923.1

(0.89) 19.522.7

(0.87) 19.322.4

(0.86) 19.022.1

(0.85) 18.821.9

(0.84) 18.521.5

(0.82)

0.0 kcal/hkW

21.725.2 (0.97) 21.4

24.9 (0.96) 21.024.4 (0.94) 20.6

24.0 (0.92) 20.523.9 (0.92) 19.3

22.4 (0.86)

5.0 kcal/hkW

23.527.3

(1.05) 23.026.8

(1.03) 22.225.9

(0.99) 22.025.5

(0.98) 21.224.6

(0.94) 19.823.0

(0.88)

6.0 kcal/hkW

23.827.6 (1.06) 23.3

27.1 (1.04) 22.426.1 (1.00) 22.0

25.5 (0.98) 21.324.8 (0.95) 19.8

23.0 (0.88)

10.0 kcal/hkW

25.029.1

(1.12) 24.128.0

(1.08) 22.926.6

(1.02) 22.225.9

(0.99) 21.324.8

(0.95) 19.823.0

(0.88)

15.0 kcal/hkW

26.030.2 (1.16) 24.1

28.0 (1.08) 22.926.6 (1.02) 22.2

25.9 (0.99) 21.324.8 (0.95) 19.8

23.0 (0.88)

Table 2. Heating Capacity Table for RAS-10FXGUnit of Capacity: 1,000 kcal/h / kW (Correction Factor)

,QGRRU�$LU�,QOHW�'U\�%XOE��&�2XWGRRU�$LU�,QOHW:HW�%XOE��&� 16.0 18.0 20.0 21.0 22.0 24.0

-10.0 kcal/hkW

22.025.5 (0.78)

21.525.0 (0.77)

21.224.6 (0.76)

21.024.4 (0.75)

21.024.4 (0.75)

20.724.1 (0.74)

-5.0 kcal/hkW

24.929.0 (0.89)

24.528.4 (0.87)

24.128.0 (0.86)

23.727.6 (0.85)

23.527.3 (0.84)

23.126.9 (0.83)

0.0 kcal/hkW

27.231.6

(0.97) 26.931.2

(0.96) 26.230.5

(0.94) 25.930.1

(0.92) 25.729.9

(0.92) 24.128.0

(0.86)

5.0 kcal/hkW

29.334.1

(1.05) 28.833.5

(1.03) 27.832.4

(0.99) 27.431.8

(0.98) 26.430.7

(0.94) 24.728.7

(0.88)

6.0 kcal/hkW

29.834.6

(1.06) 29.233.9

(1.04) 28.032.6

(1.00) 27.431.8

(0.98) 26.731.0

(0.95) 24.728.7

(0.88)

10.0 kcal/hkW

31.336.4 (1.12) 30.1

35.1 (1.08) 28.633.3 (1.02) 27.8

32.4 (0.99) 26.731.0 (0.95) 24.7

28.7 (0.88)

15.0 kcal/hkW

32.537.8 (1.16)

30.135.1 (1.08)

28.633.3 (1.02)

27.832.4 (0.99)

26.731.0 (0.95)

24.728.7 (0.88)

�SELECTION DATA 7

4.8.�CORRECTION FACTOR ACCORDING TO PIPING LENGTH

Correction Factor for Cooling Capacity According toPiping Length

The cooling capacity should be corrected according to thefollowing formula:

CCA = CC x FCCA: Actual Corrected Cooling Capacity

(kcal/h).CC: Cooling Capacity in the Performance

Table (kcal/h).F: Correction Factor Based on the

Equivalent Piping Length.

The correction factors are shown in the following figure.Equivalent Piping Length for:

■ One 90° Elbow is 0.5m■ One 180° Bend is 1.5m■ One Multi-Kit is 0.5m

H: Vertical Distance Between Indoor Unit and OutdoorUnits in Meters.

EL: Equivalent Total Distance Between Indoor Unit andOutdoor Unit in Meters .(Equivalent One-Way Piping Length)

H>0: Position of Outdoor Unit Higher Than Position ofIndoor Unit.

L: Actual One-Way Piping Length Between Indoor Unitand Outdoor Unit in Meters.

■ In case of gas piping size; Ø25.4 for RAS-8FXG, Ø28.6 for RAS-10FXG

Example: 60m Equivalent Piping Length with 25m Piping Lift, Correction Factor=0.85

Coo

ling

�8 SELECTION DATA

■ In case of gas piping size; Ø22.2 for RAS-8FXG

Correction Factor for Heating Capacity According toPiping Length

The heating capacity should be corrected according to thefollowing formula:

HCA= HC x FHCA: Actual Corrected Heating Capacity

(kcal/h).HC: Heating Capacity in the Performance

Table (kcal/h).F: Correction Factor Based on the

Equivalent Piping Length.

The correction factors are shown in the following figure.Equivalent Piping Length for

■ One 90º Elbow is 0.5m■ One 180º Bend is 1.5m■ One Multi-Kit is 0.5m

Coo

ling

Hea

ting

�SELECTION DATA 9

4.9.�SENSIBLE HEAT FACTOR (SHF)

All data related to Indoor Units can befound in Technical Catalogue for FSG.

4.10.�CORRECTION FACTOR FOR DEFROSTING OPERATION

The heating capacity in 4.7, excludes the condition of the frost or the defrosting operation period.In consideration of the frost or he defrosting operation, the heating capacity is corrected by the equation below.

Corrected Heating Capacity = Correction Factor x Heating Capacity

Outdoor Inlet Air Temp. (ºC DB)(Humidity = 85% RH)

-7 -5 -3 0 3 5 7

Correction Factor 0.95 0.93 0.88 0.85 0.87 0.90 1.0

Note: The correction factor is not available for special condition like a snowfall or operation in a transitional period.

4.11.�FAN PERFORMANCE

All data related to Indoor Units can befound in Technical Catalogue for FSG.

HeatingCapacity

Time

Reduced Capacitydue to frost build up.

Defrosting max. 10 min.

1 Cycle

�SOUND DATA 1

5.�SOUND DATA

n Indoor Units


n Outdoor Units

0RGHO��5$6��);* 3RZHU�VXSSO\��9��+]

0HDVXUHPHQW�SRLQW� ��0HWHU�%HQHDWK�WKH�8QLW�6HUYLFH�&RYHU�VXUIDFH��0HWHU�IURP�IORRU�OHYHO

1RLVH�&ULWHULD�&XUYH

Oct

ave

Sou

nd P

ress

ure

(dB

: Ove

rall

C S

cale

)

Frequency (Cycle per second)

0RGHO��5$6��);* 3RZHU�VXSSO\��9��+]

0HDVXUHPHQW�SRLQW� ��0HWHU�%HQHDWK�WKH�8QLW�6HUYLFH�&RYHU�VXUIDFH��0HWHU�IURP�IORRU�OHYHO

1RLVH�&ULWHULD�&XUYH

Oct

ave

Sou

nd P

ress

ure

(dB

: Ove

rall

C S

cale

)

Frequency (Cycle per second)

$SSUR[LPDWHWKUHVKROG�RI�+HDULQJIRU�&RQWLQXRXV�1RLVH

$SSUR[LPDWHWKUHVKROG�RI�+HDULQJIRU�&RQWLQXRXV�1RLVH

�WORKING RANGE 1

6.�WORKING RANGE

6.1.�POWER SUPPLY

:RUNLQJ�9ROWDJH 90% to 110% of the Rated Voltage

9ROWDJH�,PEDODQFH Within a 3% Deviation from Each Voltage at the MainTerminal of Outdoor Unit

6WDUWLQJ�9ROWDJH Higher than 85% of the Rated Voltage

6.1.1.� TEMPERATURE RANGEThe temperature range is given in the following table.

&RROLQJ�2SHUDWLRQ +HDWLQJ�2SHUDWLRQ

Minimum 21 °C DB/15.0 °CWB 15 °C DB,QGRRU�7HPSHUDWXUH

Maximum 32 °C DB/25.0 °C WB 27 °C DB

Minimum -5 °C DB *1 -15 °C WB *22XWGRRU�WHPSHUDWXUH

Maximum 43 °C DB 15 °C WB*1: 10 DB ~ -5 DB (Operation Control Range)*2: -10 WB ~ -15 WB (Operation Control range)

DB: Dry Bulb, WB: Wet Bulb

6.1.2.� PIPING PROVISION

■ Maximum Piping Length LO - I

– 100 m in Actual Length– 125 m in Equivalent Length

(One Way for Each Indoor Unit)

■ Maximum Piping Lift Between Outdoor Unit andIndoor Unit HO-I:

– 50 m When Outdoor Unit is Higher than Indoor Unit– 40 m When Indoor Unit is Higher than Outdoor Unit

■ Maximum Piping Lift Between each Indoor Unit HI-I

– 15 m

Only for Pull-down Operation

Outdoor AirTemperature(°C DB) Outdoor Air

Temperature(°C WB)

Indoor Air Inlet Temperature (°C WB)

: Operation Control Range

&RROLQJ�2SHUDWLRQ +HDWLQJ��2SHUDWLRQ

Indoor Air Inlet Temperature (°C DB)

CH Units

Indoor Unit

Outdoor Unit

Indoor Units

�ELECTRICAL DATA 1

7.�ELECTRICAL DATA

n Indoor Units

All data related to Indoor Unitscan be found in TechnicalCatalogue for FSG.

n Outdoor Units

Unit Main Power Applicable Voltage Compressor Motor Outdoor Fan Motor MaximumCurrent

ModelVOL PH HZ Maximum Minimum PH STC

CoolingOperation

HeatingOperation PH RNC IPT RNC

RNC IPT RNC IPT

RAS-8FXG 456 342 353/ 58

14.4/ 13.2

8.913.7/ 12.6

8.4 13.25/ 3.22

0.58/ 0.63

32

RAS-10FXG

380/ 415

3 50456 342 3

61/ 66

17.9/ 16.4

11.116.6/ 15.2

10.1 13.31/ 3.61

0.71/ 0.86

35

VOL: Rated Unit Power Supply Voltage (V) RNC: Running Current (A)

HZ: Frequency (Hz) PH: Phase (φ)

STC: Starting Current (A) IPT: Input (kW)

Notes:1. The above compressor data is based on 100%

capacity combination of indoor units at therated operating frequency (8FXG at 70/60Hz,10FXG at 88/74Hz [50/60Hz].).

2. The above performance data is based on 5mequivalent piping length and 0m piping lift.

3. This data is based on the same conditionsas the nominal heating and coolingcapacities.

8ELECTRICAL WIRING DIAGRAMS 1

0DUN 1DPHCA 1 CapacitorCB 1,2 CapacitorCH, CH 2 Crankcase HeaterCMC1,2 Contactor for Compressor MotorCN, PCN ConnectorCS 1,2 CapacitorCT 2, 5, U, V Current TransformerDCL ReactorDM Diode ModuleDS 3,4,9∼12 I.F. ConnectorDSW 1~10 Dip Switch on PCB1DSW 1 Dip Switch on PCB3EF1~4 FuseIPM Transistor ModuleITO 1 Internal Thermostat for Outdoor Fan MotorLED Light Emitting DiodeMC 1,2 Motor for CompressorMOF1 Motor for Outdoor FanMV 1,2,B Micro-Computer Control Expansion ValveNF 1~10 Noise FilterOH 1 Oil Heater for Oil SeparatorPCB 1~3 Printed Circuit BoardPd, Ps Sensor for Refrigerant PressurePSH Pressure Switch for ProtectionPSW1~3 Push Switch on PCB1R 1,2 ResistorRS 1,2 Resistor for StartingRVR 1,2 Reversing Valve RelaySVA Solenoid Valve for Hot Gas BypassTB 1,2 Terminal BoardTF TransformerTHM 7~10 ThermistorY Auxiliary Relay on PCB1ZNR Surge Absorber� Terminals

1RWH�� $OO�WKH�ILHOG�ZLULQJ�DQG�HTXLSPHQW�PXVWFRPSO\�ZLWK�QDWLRQDO�DQG�ORFDO�FRGHV�

8. ELECTRIC WIRING DIAGRAM (For Models: RAS-8FXG and RAS-10FXG)All data related to Indoor Units can befound in Technical Catalogue for FSG

82 ELECTRICAL WIRING DIAGRAMS

ELECTRIC WIRING DIAGRAM (For Models: CH-4.0GE and CH-6.5GE)For CH-6.5GE Only

ELECTRICAL CONTROL BOX

Cooling/Heating Changeover Unit

Electrical Control Box

ElectricFactory Wiring

Earth Wiring

Field Wiring

Factory Setting Position(Dip Switch)

Electrical Control Box of CH UnitPrinted Circuit Board

0DUN 1DPH 5HPDUNPCB 1, 2, 3 Printed Circuit BoardTB 1 Terminal Board Power SupplyTB 2 Terminal Board Operation LineTF 1 TransformerEF 1 Fuse 1 (A)NF 1 Noise FilterSVD1,SVS1 Solenoid Valve DC220-240V

SVD2,SVS2 Solenoid Valve AC220-240V

1RWH�� $OO�WKH�ILHOG�ZLULQJ�DQG�HTXLSPHQW�PXVWFRPSO\�ZLWK�QDWLRQDO�DQG�ORFDO�FRGHV�

Outdoor Unit orthe otherChangeover Unit

Indoor Unit Power Supply

For CH-6.5GE Only

Arrangement of Solenoid Valve(view of the top)

�CONTROL SYSTEM 1

9.�CONTROL SYSTEM

9.1.�REFRIGERANT CYCLE (EXAMPLE: RAS-10FXG)

1R� 3DUW�1DPH 1R� 3DUW�1DPH 1R� 3DUW�1DPH1 Compressor 10 Micro-Computer Control Expansion Valve 19 Check Joint

2 Heat Exchanger 11 Micro-Computer Control Expansion Valve (Liquid Bypass) 20 Stop Valve (1/2) for Liquid Line

3 Receiver 12 Distributor 21 Stop Valve (1) for Gas Low Line

4 Oil Separator 13 Reversing Valve 22 Stop Valve (3/4) for Gas High Line

5 Accumulator 14 Capillary Tube 23 High Pressure Switch for Protection

6 Strainer 3/8 15 Check Valve (3/8) 24 Sensor for Refrigerant Pressure

7 Strainer 1/2 16 Check Valve (5/8) 25 Sigh Glass (FXG Only)

8 Strainer 3/4 17 Check Valve (3/4) 26 Dryer (FXG only)

9 Strainer 18 Solenoid Valve (Gas Bypass) 27 E-102XME

Refrigerant R407 (FXG)

Airtight Test Pressure 3.3 MPa

Outdoor UnitIndoor Units

Refrigerant Flow for CoolingRefrigerant Flow for HeatingField Refrigerant PipingFlare ConnectionFlange ConnectionBrazing Connection

�2 CONTROL SYSTEM

&+�8QLW�&+��*(

&+�8QLW�&+��*(

0DUN 3DUW�1DPH 0DUN 0DWHULDO�6L]H�2�'��PP��×�WKLFNQHVV��PP� 0DWHULDO

1 Solenoid Valve (AC) a 9.53 × 0.8

2 Solenoid Valve (DC) b 6.35 × 0.7

3 Strainer c 15.88 × 1.0

4 Check Valve d 19.05 × 1.0

5 Capillary Tube e 3 × 0.8

6 Capillary Tube f 4 × 0.7

Copper TubeC1220T-O

1RWH� 7KH�PDUN�RI�LQVLGH��>�@��LV�VKRZQ�LQ�WKH�HOHFWULFDOZLULQJ�GLDJUDP

Liquid Line (∅9.53mm)

To Indoor Unit To Outoor Unit

High PressureGas Line (∅12.7mm)

Low PressureGas Line (∅15.88mm)

High PressureGas Line (∅15.88mm)

Low Pressure

Liquid Line (∅9.53mm)

Ô Õ

Refrigerant Flow Direction (Cooling Operation)Refrigerant Flow Direction (Heating Operation)Field Refrigerant PipingFlare Connection

Liquid Line

To Indoor Unit To Outoor Unit

High PressureGas Line

Low PressureGas Line

High PressureGas Line

Low Pressure

Liquid LineÔ Õ

Refrigerant Flow Direction (Cooling Operation)Refrigerant Flow Direction (Heating Operation)Field Refrigerant PipingFlare Connection

�CONTROL SYSTEM 3

9.2.�DEVICE CONTROL SYSTEM

The table shows the control system of refrigerant cycle.

)RU�);*�6HULHV

3XUSRVH&RQWURO�6XEMHFW

&RROLQJ�2SHUDWLRQ +HDWLQJ�2SHUDWLRQ

Fan Revolution of Outdoor Unit For Controlling Discharge Pressure: Pd(Main Control for Pd)

For Controlling Pressure based on Outdoor airTemperature

Opening Degree of Exp. V forLiquid Bypass: MVB

For Controlling Temperature of DischargeSuper-Heat: Td SH

Closed

Opening Degree of Exp. V ofOutdoor Unit: MV1, MV2

For Controlling Pressure: Pd (Sub Control forPd)

For Controlling Temperature of DischargeSuper-Heat: Td SH

Opening Degree of Exp. V ofIndoor Unit: MV

1 For Controlling Temperature Differencebetween air Inlet and air Outlet of Indoor Unit

2 For Controlling Temperature Differencebetween Gas Pipe and Liquid Pipe of IndoorUnit Heat Exchanger

1 For Controlling Temperature Differencebetween air Inlet and air Outlet of Indoor Unit

2 For Balancing Temperature Differencesbetween Gas Pipe and Liquid Pipe of eachIndoor Unit

Inverter Frequency ofCompressor

For Controlling Pressure of RefrigerantSuction: PS

For Controlling Pressure of Refrigerantdischarge: Pd

Exp. V: Micro-Computer Control Expansion Valve

Figure below shows the outline of the control system.

6\PERO 1DPH

MC Motor (for Compressor)

MIF Motor (for Indoor Blower)

MOF Motor (for Outdoor Blower)

MS Motor (for Auto-Louver)

MV1,2,b Electronic Expansion Valve

THR Fin Thermostat

EHW Electric Heater

6\PERO 1DPH

CMC Magnetic Contactor

RVR 4-Way Valve

SVa,b Solenoid Valve (for Hot Gas Bypass)

PSC Pressure Switch

CT1,2 Diverter

SCS1,2 Solenoid Valve

SVD1,2 Solenoid Valve (DC)

Indoor Unit To Transmission Circuit of thenext CH Unit

Thermistor for Inlet AirThermistor of Discharge Air

Thermistor of Gas PipeThermistor of Liquid Pipe

Discharge Gas Pressure Sensor

Thermistor of Atmospheric Air

Discharge Gas Thermistor

Thermistor for Heating Evaporation Temperature

Suction Gas Pressure Sensor

A+DConversion

CircuitRemote Control Switch

RemoteControlMCU

Outdoor UnitMCU

Tran

smis

sion

circ

uit

InverterControl MCU

ProtectionCircuit

Inverter PowerSection

Electrical Control ExpansionValve Drive Circuit

Relay DriveCircuit

RelayDriveCircuit

ProtectionCircuit

Electrical ControlExpansion Valve DriveCircuit

Relay DriveCircuit

CH UnitMCU

Outdoor Unit

380/415V PowerSource

Indoor UnitMCU

A+D ConversionCircuit

Multiple Signals

Single Signals

Operation Signals

Tran

smis

sion

circ

uit

Tran

smis

sion

circ

uit

Tran

smis

sion

circ

uit

Tran

smis

sion

circ

uit

CONTROL SYSTEM

94

9.3.�STANDARD OPERATION SEQUENCE

■ Cooling (Mainly Cooling) Operation

�CONTROL SYSTEM 5

■ Cooling (Mainly Cooling) Operation (cont.)

CONTROL SYSTEM

96

■ Dry OperationI.U.: Indoor UnitO.U.: Outdoor Unit

�CONTROL SYSTEM 7

■ Dry Operation (cont.)

CONTROL SYSTEM

98

■ Freezing Protection Control during Cooling or Dry Operation

�CONTROL SYSTEM 9

■ Heating Operation

CONTROL SYSTEM

910

■ Heating Operation (cont.)

�CONTROL SYSTEM 11

■ Defrosting Operation Control

Pressure control Value

A BFXG 2.4 1.3

CONTROL SYSTEM

912

9.4.�GAS BYPASS CONTROL

■ Gas Bypass control

SVA ON/OFF Control

);*�6HULHV

6WDQGDUG�&RQWURO

5HVWULFWHG�&RQWURO

SVA: Solenoid Valve for Hot Gas Bypass

■ Electronic Expansion Valve Control for Bypass

Pd=2.8MPa (G)(28kg/cm²G)

SVA: OFF

SVA: ON



SVA: OFF

SVA: ON


�CONTROL SYSTEM 13

9.5.�PROTECTION AND SAFETY CONTROL

&RPSUHVVRU�3URWHFWLRQ��The compressor is protected bythe following devices and their combinations.

+LJK�3UHVVXUH�6ZLWFK ��This switch cuts out the operation ofthe compressor when the discharge pressure exceeds thesetting.

)DQ�0RWRU�3URWHFWLRQ��Internal Thermostat-Embedded inthe fan motor winding, this internal thermostat cuts out theoperation of the fan motor when the fan motor windingtemperature exceeds the setting.

2LO�+HDWHU��This band type heater protects against oil carry-over during cold starting, as it is energized while thecompressor is stopped.

9.6.�SAFETY AND CONTROL DEVICE SETTING

6DIHW\�DQG�&RQWURO�'HYLFH�6HWWLQJ�IRU�,QGRRU�8QLWV

0RGHO 53, 5&, 5&' 53. 53) 53), 53& 5HPDUNV

For Evaporator Fan MotorInternal Thermostat

Cut-OutCut-In

°C°C

140±590±15

145±590±15

130±583±15

130±583±15

130±583±15

130±583±15

135±590±15

Automatic Reset,Non-adjustable(each one for eachmotor)

For Control CircuitFuse Capacity A 3 (One for each Unit), 5 for RPI-4.0FSGE, 5.0FSGE only

Freeze ProtectionThermostat

Cut-OutCut-In

°C°C

014

Thermostat Differential °C 2

6DIHW\�DQG�&RQWURO�'HYLFH�6HWWLQJ�IRU�2XWGRRU�8QLWV

0RGHO 5$6��);* 5$6��);*

Automatic Reset, Non-Adjustable(each one for each compressor)

For CompressorPressure Switches

High Cut-Out MPa 3.3 / 2.94-0.05-0.15

-0.05-0.15

3.3 / 2.94-0.05-0.15

-0.05-0.15

Cut-In MPa 2.76 0.15 / 2.356 0.15 2.76 0.15 / 2.356 0.15

Fuse� ��5, 50Hz A 20 20

Oil Heater Capacity

W

97 x 2(Constant Compressor)

97(Oil Separator)

97 x 2(Constant Compressor)

97(Oil Separator)

Non-AdjustableCCP TimerSetting Time min 3 3

Automatic Reset, Non-Adjustable(each one for each compressor)

For Condenser Fan MotorInternal Thermostat

Cut-OutCut-In

ºCºC

1306583615

1306583615

For Control CircuitFuse Capacity on PCB A 10 10

CCP Timer: Enforced 3 minutes operation and stoppage.

��REMOTE CONTROLLERS OPERATION 1

10.�REMOTE CONTROLLERS OPERATION

10.1 Liquid Crystal Remote Control Switch (PC-2H2)

10.2 Optional Remote Controller (PC-5H)

10.3 Optional Wireless remote

10.4 Optional 7-Day Timer (PSC-3T)

10.5 Optional Central Station (PSC-3S1)

10.6 Optional Accessories for RCSRemote Control Cable (PRC-10E ~ PRC-30E3P Connector Cable (PCC-1)

All data related to RemoteControllers Operation for FXGSeries are the same as for FSGSeries. Please refer toTechnical Catalogue for FSG

3$57 ,,

,167$//$7,21 '$7$

��UNITS INSTALLATION 1

11.� UNITS INSTALLATION

11.1.�GENERAL CHECK

All data related toTransportation and Handling ofIndoor Units for FXG Series arethe same as for FSG Series.Please refer to TechnicalCatalogue for FSG.

n Indoor Units Installation

11.2.�RPI (IN-THE-CEILING)

11.3.�RCI (4-WAY CASSETTE TYPE)

11.4.�RCD (2-WAY CASSETTE TYPE)

11.5.�RPK (WALL TYPE)

11.6.�RPF (FLOOR TYPE) / RPFI (FLOOR CONCEALED TYPE)

11.7.�RPC (CEILING TYPE)

All data related to Indoor UnitsInstallation for FXG Series arethe same as for FSG Series.Please refer to TechnicalCatalogue for FSG

��2 UNITS INSTALLATION

11.8.�RAS (OUTDOOR UNIT)

11.8.1.� TRANSPORTATION OF OUTDOOR UNIT

1. Transport the unit as close to the installation place aspractical before unpacking.

CAUTION:'R�QRW�SXW�DQ\�PDWHULDO�RQ�WKH�SURGXFW�$SSO\�WZR�OLIWLQJ�ZLUHV�RQWR�WKH�RXWGRRU�XQLW��ZKHQOLIWLQJ�LW�E\�FUDQH�

2. Hanging MethodWhen hanging the unit, ensure a balance of the unit,check safety and lift up smoothly.

� For Transportation- Do not remove any packing materials.- Hang the unit under packing condition with two (2)

ropes through the each square hole an apply thesplints or corrugated paper for the unit protection.

DANGER:'R�QRW�KDQJ�URSHV�DW�WKH�ZRRGHQ�EDVH�

� For Installation- Remove the wooden base.- Apply two (2) ropes on the splints or corrugated paper

to protect the unit, and hang the unit as shown below.

(Rope Position)

CORRECT INCORRECT

WARNING:'R�QRW�SXW�DQ\�IRUHLJQ�PDWHULDO�LQWR�WKH�RXWGRRU�XQLWDQG�FKHFN�WR�HQVXUH�WKDW�QRQH�H[LVWV�LQ�WKH�RXWGRRUXQLW�EHIRUH�WKH�LQVWDOODWLRQ�DQG�WHVW�UXQ��2WKHUZLVH��DILUH�RU�IDLOXUH��HWF��PD\�RFFXU�

CAUTION:'R�QRW�KROG�WKH�UHVLQ�FRYHUV�ZKHQ�KROGLQJ�RU�OLIWLQJ�WKHRXWGRRU�XQLW�

3. Before InstallationBefore installation work, check the availability of thefollowing parts which are packed inside the outdoor unitfixed to the base plate.

11.8.2.� FACTORY-SUPPLIED ACCESSORIES

$FFHVVRU\ 4XDQWLW\ 3XUSRVH

Compressed Sheet 1

Pipe Flange ofRefrigerant GasPiping

1

Connection for RefrigerantGas Piping with:RAS-8FXG & RAS-10FXG

3 For Connection Hole ofPower Source Wiring

Rubber Bush4 For Connection Hole of

Operation Wiring

Screw 3 Spare

1RWH� ,I�DQ\�RI�WKHVH�DFFHVVRULHV�DUH�QRW�SDFNHG�ZLWK�WKHXQLW��SOHDVH�FRQWDFW�\RXU�FRQWUDFWRU�

11.8.3.� OUTDOOR UNITS INSTALLATION

All data related toOutdoor UnitsInstallation for FXGSeries are the same asfor FSG Series (8 and10HP). Please refer toTechnical Catalogue forFSG, Chapter 11.8.3

Rope

Wooden Base

Rope

SquareHole

SquareHole

Rope

Rope

Angle of Wiremore than 60º

Do not apply anyforce to this plate.(Both Side)

Apply rope onthe splints orcorrugatedpaper morethan 15mmthickness.

Do not removewooden frameand plastic band

Apply rope throughthe square hole


11.9.�TRANSPORTATION AND INSTALLATION OF CH UNIT

11.9.1.� TRANSPORTATION AND HANDLING

Transport the product as close to the installation location aspractical before unpacking

WARNING:'R�QRW�SXW�DQ\�IRUHLJQ�PDWHULDO�LQWR�WKH�&+�8QLW�DQGFKHFN�WR�HQVXUH�WKDW�QRQH�H[LVWV�LQ�WKH�RXWGRRU�XQLWEHIRUH�WKH�LQVWDOODWLRQ�DQG�WHVW�UXQ��2WKHUZLVH��D�ILUHRU�IDLOXUH��HWF��PD\�RFFXU�

CAUTION:'R�QRW�SXW�DQ\�PDWHULDO�RQ�WKH�SURGXFW�%H�FDUHIXO�QRW�WR�GDPDJH�RQ�LQVXODWLRQ�PDWHULDOV�RIXQLW�V�VXUIDFH�ZKHQ�OLIWLQJ�

11.9.2.� INSTALLATION

The CH Unit is Installed indoors for the SET-FREE FXGsystem, between the outdoor unit and Indoor unit. Thecombination of the CH Unit and indoor Unit is as follows.

Model Indoor UnitQuantity

Total Indoor Capacity(HP)

CH-4.0GE 1 to 3 Smaller than 4.0(excluding 4.0)

CH-6.5FE 1 to 6 4.0~6.5 (including 4.0 andexcluding 6.5)

DANGER:'R�QRW�LQVWDOO�WKH�,QGRRU�8QLW�LQ�D�IODPPDEOHHQYLURQPHQW�WR�DYRLG�ILUH�RU�DQ�H[SORVLRQ�

WARNING:&KHFN�WR�HQVXUH�WKDW�WKH�FHLOLQJ�VODE�LV�VWURQJ�HQRXJK�'R�QRW�LQVWDOO�WKH�&+�8QLW�2XWGRRUV��,I�LQVWDOOHG2XWGRRUV��DQ�HOHFWULF�KD]DUG�HOHFWULF�OHDNDJH�ZLOORFFXU�

Check to ensure that the following accessories are packedwith the CH Unit.

Factory-Supplied accessories (for CH-6.5GE)

$FFHVVRU\ 4�W\ 3XUSRVHStrainer APiping Size:∅15.88mm

1For Gas (High)Piping fromOutdoor Unit

Strainer BPiping Size:∅19.05mm

1 For Gas Pipingfrom Indoor Unit

Insulation(26IDx140mm) 2


For RefrigerantPiping Connection

Band 16 To fix Insulation forRefrigerant Piping

Factory-Supplied accessories (for CH-4.0GE)

$FFHVVRU\ 4�W\ 3XUSRVHStrainer APiping Size:∅12.7mm

1For Gas (High)Piping fromOutdoor Unit

Strainer BPiping Size:∅15.88mm

1 For Gas Pipingfrom Indoor Unit

Reducer A ∅9.53to ∅6.35

1To Connect ∅6.35liquid piping ofIndoor Unit

Reducer B∅15.88 to ∅12.7 1

To Connect ∅12.7liquid piping ofIndoor Unit



For RefrigerantPiping Connection

Band 16 To fix Insulation forRefrigerant Piping

�� ,QLWLDO�&KHFN

� Install the CH unit with a proper clearance around it formaintenance working space, as shown in below figure:

Min

.15

0

600 Access Panel

130

Min

. 650

1000

Acc

ess

Pan

el

Min.600

Min.600

Surroundingin the Ceiling

Service AccessPanel

Min.600

Min.600

Min

.15

0

Unit: mm


� Flowing sound of refrigerant may be heard from the CHunit when the solenoid valve in the CH unit is activated.Therefore, take the following action to minimize thesound.(A) Install the CH unit inside the ceiling. As for the ceiling

material, select a material like a plaster board whichminimizes operation sound.

(B) Do not install the CH unit in near a bed room orhospital room.

� Do not install the CH unit in a hot or humid place likekitchen to prevent dew condensation on the outer surfaceof the CH unit.

� Pay attention to the following points when the CH isinstalled in a hospital or other facilities where there areelectronic waves from medical equipment.(A) Do not install the CH unit where the electromagnetic

wave is directly radiated to the electrical box orintermediate wiring (operating line).

(B) Install the CH unit and components as far as practicalor at least 3 meters from the electromagnetic waveradiator.

(C) Install a noise filter when the power supply emitsharmful noises.

�� 6XVSHQVLRQ�%ROWV

� Select final location and installation direction of the indoorunit paying careful attention to the space for the piping,wiring and maintenance.

� Mount suspension bolts, as shown below.

- For Concrete Slab

- For Steel Beam

- For Wooden BeamSuspension

3. Installation

1. Marking of the Positions of the Suspension Bolts andPiping Connections

� Mark the positions of the Suspension bolts, refrigerantpiping connections and drain connection.

� Installation dimensions are shown below.

5HPDUNV0DUN 1DPH

&+��*( &+��*(

1 Suspension Bracket for M8 or w5/16 Bolt

2 Refrigerant Gas (Low)Pipe connection

15.88 Flareconnection


3 Refrigerant Gas (High)Pipe connection



4 Refrigerant Liquid Pipeconnection

9.53 Flare connection

5 Refrigerant Gas Pipeconnection



6 Refrigerant Liquid Pipeconnection

9.53 Flare connection


8 Hole for operating Line 26.5 at bottom side

9 Hole for power supplyLine

26.5 at bottom side

SteelAnchor Bolt

Concrete

150~160 mm

I-Beam

Suspension Bolts(W3/8 or M10)

Wooden Bar(60mm to 90mm Square) Square Washers

Nuts

Sling Bolt(W3/8 or M10)

Wooden Beam

Model PipeLength a

CH-4.0GE 68CH-6.5E 72

a: See table


2. Mounting the CH Unit� How to put nuts

Put nuts on each of the four suspension bolts beforesuspending the CH unit, as shown below

)LHOG�6XSSOLHG�3DUWV 'LPHQVLRQVSuspension Bolts 4-M8 or W5/16Nut 8-M8 or W5/16Washer 8-M8 or W5/16

� Suspension the CH UnitHook suspension bracket to the nut and washer of eachsuspension bolt, as shown below.Check that the nuts and washers are correctly fixed bythe retainers of the suspension bracket.

3. Adjusting of the Unit Level� How to put Nuts

Put nuts on each of the four suspension bolts beforesuspending the CH unit, as shown below

� Tighten the bolts of the suspension nuts with thesuspension brackets after adjustment is completed.Special plastic paint must be applied to the bolts in orderto prevent them from loosening.

Suspension Bolt(M8 or W5/16)

Nut & Washer(Field-Supplied)

30~50mm

SuspensionBracket

Nut & Washer(Field-Supplied)

CH Unit

Suspension Bolt

SuspensionBracket

Level ScaleVinyl Tube


11.9.3.� FOUNDATION PROVISION� Concrete Foundations1 The height of the foundation should be 100~300 mm higher than the ground level.2 Install a drainage around foundation for smooth drain.3 When installing the outdoor unit, fix the unit by anchor bolts.4 Secure the outdoor unit with the anchor bolts.5 When installing the unit on a roof or a veranda, drain water sometimes turns to ice on a cold morning. Therefore, avoid

draining in an area that people often use because it is slippery.

1RWH��'HVLJQ�WKH�IRXQGDWLRQ�DV�VKRZ�DERYH�DQG�FRQILUP�WKDW�WKH�IRXQGDWLRQ�FDUULHV�DOO�RI�WKH�IHHW�RI�WKH�XQLW�

11.10.� INSTALLATION OF OPTIONAL AIR PANEL

All data related to Units Installation ofOptional Air Panel for FX Series arethe same as for FS Series. Pleaserefer to Technical Catalogue for FSGSeries, Chapter 11.9

a

b

)RXQGDWLRQV

3RVLWLRQ�RI�$QFKRU�%ROWV

02'(/ D E

RAS-8FXGRAS-10FXG 760 688

4-38x16(Hole for Anchor Bolt)

Correct Foundation Incorrect Foundation

88 88

Min.100

Min.100

Vibration-ProofRubber

Mortar Hole (Ø 100mm x Depth 150mm)

Drainage (Width 100mmx Depth 20mm)

Drainage

RefrigerantPipe

100~

300m

m

614

Ø 30mm Anchor Bolt


11.11.� OPTIONAL ACCESSORIES

5(027(�6(1625��7+0�5��

)5(6+�$,5�,17$.(�)25��:$<�&$66(77(�7<3(�,1'225�81,76

%5$1&+�',6&+$5*(�'8&7�)25��:$<�&$66(77(�7<3(�,1'225�81,76

',5(&7,21�$,5�)/2:�)25��:$<�&$66(77(�7<3(�,1'225�81,76

$,5�),/7(5�$1'�),/7(5�%2;�)25�,1�7+(�&(,/,1*�7<3(�,1'225�81,76

All data related to Units Installation ofOptional Accessories for FX Series arethe same as for FS Series. Pleaserefer to Technical Catalogue for FSGSeries, Chapter 11.10

11.12.� INSTALLATION INSTRUCTIONS FOR DRAIN-UP KIT (MODEL: DU-23E)

11.12.1.� ACCESSORIESCheck to ensure that the following accessories are packed inthe Drain-Up Kit.

1DPH 4W\

Drain Hose (A) 1

Drain Hose (B) 1

Wire Clamp 1

Wire Clamp 3

Screw (A) 2

Screw (C) 2Drain Boss (A)

Ø25

Ø25

Ø25

1

Drain Boss (B)

Ø25

Ø25

Ø25

.7

Ø25

.7

1

11.12.2.� DRAIN-UP KIT INSTALLATIONPROCEDUREMount this Drain-Up Kit to the In-the-ceiling type unit afterinstalling the In-the-Ceiling type indoor unit.

1. Remove the wire clamp from the outlet port of drain panof the unit

2. Connect the accessory Drain Boss (A) or (B) to the outletport of the drain pan of the unit ((A) if the inlet diameter is25 mm and (B) if inlet diameter is 25.7 mm).Adhere and seal the connecting part by sealing material.

3. Attach the Drain-Up Kit to the unit with two screw (A) andto screw (B).

4. Connect the Drain Hose (A) to the free port of the DrainBoss (a) or (B) and to the inlet port of the Drain-Up Kit.Adhere and seal the connecting part by sealing material.

5. Insulate the both connecting parts of the Drain Hose (A)between the unit and the Drain-Up Kit with the suitableinsulation Material field supplied.

6. Connect the wiring from the drain motor in the Drain-UpKit to the connector (CN24 Marked MD) which locates inthe electrical box. Clamp and wiring between theelectrical box and the Drain-Up Kit by using a band fieldsupplied.

7. Connect the accessory Drain Hose (B) to the outlet portof the Drain-Up Kit. Adhere and seal the connecting partby sealing material.

127(6�1. In case of the unit is not operated for a long period of

time, discharge the drain water in the drain pan of theDrain-Up Kit.

2. Do not use the Drain-Up Kit higher than 40 °C ofambient temperatures.

From theunit

From theunit

Drain Boss (A)

Drain Boss (B)

From theDrain-Up

Kit

From theDrain-Up

Kit

Screw (A) Wire Clamp

Drain Boss (A) or (B)

Unit

Drain Hose (A)

Drain Hose (B)

Drain-Up Kit

Screw (B)(On the Unit)

12REFRIGERANT PIPING AND REFRIGERANT CHARGE 1

12.� REFRIGERANT PIPING AND REFRIGERANT CHARGE

12.1.� PIPING SYSTEM AND MULTI-KIT

1. A maximum piping length of 100 meters and maximum liftof 50 meters between the indoor unit and outdoor unit isapplicable.

2. Utilizing the SD (suction/discharge air temperature)control to maintain the most appropriate refrigerant flow, amaximum lift of 15 meters, which is almost equivalent to a4 floor height, between indoor units is available.

12.1.1.�PIPING SYSTEM EXAMPLE

n� Line Branch

Indoor Unit (In the same operation mode)Table 1:

Low Gas / High Gas / LiquidPiping Size Ø


Modela~d A~D

RAS-8FXG 25.4 (22.2) / 19.05 / 12.7 E-82XME *2RAS-10FXG 28.6 / 19.05 / 12.7 E-102XME *2

Table 2:

Gas / Liquid Piping Size Ø Model ofMulti-KitCH Unit

Modele~f E~F

CH-4.0GE 15.88 / 9.53 E-42MECH-6.5GE 19.05 / 9.53 E-52ME

n� Header Branch

Combination of CH Unit and Indoor UnitTable 3:


ModelLow Gas / High Gas /Liquid Piping Size Ø

2~8 BranchesRAS-8FXG 25.4 (22.2) / 19.05 / 12.7RAS-10FXG 28.6 / 19.05 / 12.7

E-88XE3

Table 4. CH Unit~Indoor Unit:

Indoor UnitCapacity

Pipe Size (« mm)(Gas / Liquid) *2

Max. Length ofLiquid Pipe *3

0.8 and 1.0HP 12.7 / 6.35 30m1.5HP 12.7 / 6.35 *1 15m

2.0 and 2.3HP 15.88 / 6.35 *1 15m2.5 and 3.0HP 15.88 / 9.53 30m4.0 and 5.0HP 19.05 / 9.53 30m

Notes:*1): In the case that the liquid pipe for the Indoor Unit with

the capacity of 1.5HP~2.3HP is longer than 15m, usethe pipe with a diameter of «9.53.

*2): The pipe sizes shown in the above table is applicablefor both the Line branch and the Header branch.

*3): The piping length between the last multi-kit and thefarthest Indoor unit shall be within 5m.(Refer to the next page)

See Table 1

SeeTable 2

CH Unit

Indoor Unit

OutdoorUnit

CH Unit

Indoor Unit

Outdoor UnitSee Table 3

122 REFRIGERANT PIPING AND REFRIGERANT CHARGE

12.1.2.�DIRECTIONS FOR REFRIGERANT PIPINGWORK

n� Total System of SET-FREE (FXG Series)

Liquid Piping ØUnit Gas Piping Low /

High Pressure Ø Standard Longer piping8 HP 22.2 or 25.4 / 19.05 12.7 (Fig. 2) 12.7 (Fig. 2)

10 HP 28.6 / 19.05 12.7 (Fig. 1) 15.88 (Fig. 2)

Normal Size ( «)Indoor unitCapacity (HP) Gas Liquid

Size-up Liquid ( «)

0.8 ~ 1.5 12.7 6.35 9.532.0 ~ 2.3 15.88 6.35 9.53

2.5 and 3.0 15.88 9.53 -4.0 and 5.0 19.05 9.53 -

WARNING:�� The liquid piping and the gas piping shall be the same

piping length and run along the same route.

�� Install multi-Kits (Optional Accessory as system parts)shall be used for the branch pipe to the indoor unit.

�� Install multi-Kits as the same horizontal level.

�� Make a trap every 10m (Max.) of height difference forgas piping between indoor unit and outdoor unit.

�� (*1) Install each CH units at the same level in thesame floor with maximum lift of 0,5 m

�� The piping length between the last multi-kit and thefarthest indoor unit is longer than 5m, use the T-branch at only the liquid pipe instead of liquid multi-kit.The direction of the T-branch is shown below.

The T-branch on market is available for this pipingwork and prepare at each side. If the diameter of thepipe between the Outdoor Unit and the CH Unit isdifferent, use the reducer.

�� For 1.5 ~ 2.3 HP indoor unit, in case the piping lengthbetween the multi-kit and the indoor unit is longer than15m, use the size-up of liquid pipe plus T-branchindicated above if it is necessary..

Outdoor Unit

See Tablebelow

Trap (Refrigerant Piping at Gas Side)Make a trap every 10m (Max.) of heightdifference between indoor unit and outdoor unit.

Outdoor Unit

Max. 30m

HeightDifferencebetween IndoorUnits:Max. 15m

Indoor Units

Installmulti-Kitshorizontally

Actual Length:Max. 100m(EquivalentLength: Max.125m)

Height Difference between Indoor Unit andOutdoor Unit: Max. 50m(When the Outdoor unit is installed lowerthan the indoor unit.: Max 40m)

CH Units

5m

*1

*2

Outdoor Unit

CH Unit

CH Unit

Outdoor UnitCH Unit

CH Unit

Horizontal


n� Applicable Height Difference According to PipingLength

Notes:1. Piping: The piping sizes are as shown below

(* Conditions).2. DSW: Dip Switch on Outdoor Unit PCB

(DSW3 shall be set according to the liftbetween Outdoor Unit and Indoor Unit andwhen longer piping is required).

3. Division line is included in the below area

Fig. 1. Outdoor Unit RAS-10FXG

* Conditions:

Outdoor Unit Liquid Piping ØRAS-10FXG 12.7

Fig. 2. Outdoor Unit RAS-8FXG, RAS-10FXG

* Conditions:

Outdoor Unit Liquid Piping ØRAS-8FXG 12.7

RAS-10FXG 15.88

Heightdifference

(m)

Piping Length (m)

When theoutdoor unitis installedhigher thanindoor unit.

Total length between outdoor unitand each indoor unit DSW3: Set

Refer to fig. 2

When theoutdoor unitis installedlower thanindoor unit.

DSW3: Set

DSW3: Not Set(factory-

Supplied)

DSW3: Set

<Setting of DSW3>

Heightdifference

(m)

Piping Length (m)

When theoutdoor unitis installedhigher thanindoor unit.

Total length between outdoor unitand each indoor unit

DSW3: Set

When theoutdoor unitis installedlower thanindoor unit.

DSW3: Set

DSW3: Not Set(factory-

Supplied)

DSW3: Set

<Setting of DSW3>


n� Piping System and Additional refrigerant

ITEM LINE BRANCH SYSTEM

Example of Systems

This figure shows an example of 5 indoor units combinedwith one outdoor unit.

The refrigerant pipes are shown as single line in thediagrams.

However in the field, liquid line piping, gas (high) linepiping and gas (low) gas piping are required between theoutdoor unit and the CH unit, and liquid line piping andgas line piping are required between the CH unit and theindoor unit.

Note: Provide oil trap to both gas lines at every 10 meterslift.*CH Units should be installed in the same floor

Actual Length Lt � 100 mMaximum PipingLength Equivalent Length Lt � 125 m

In the case that the position of outdoor unitis higher than that of indoor unit. H1� 50 mMaximum Lift

betweenOutdoor Unitand Indoor Unit

In the case that the position of outdoor unitis lower than that of indoor unit. H1 � 40 m

Maximum Lift between Each Indoor Unit, or Multi-Kit and indoor Unit H2 � 15 m

Maximum Lift among Indoor Unit connected to the same CH unit. H3 � 4 mMaximum difference of piping length between each indoorunit and same CH Unit. L4 - L3 � 5 m

Between Multi-Kit "a" and the FarthestIndoor Unit L � 30 m

Between Each Multi-Kit and Each IndoorUnit L0, L1, L2, L3, L4 � 30 m

MaximumPiping Lengthbetween Multi-Kit and IndoorUnit Between last multi-kit and the farthest

Indoor Unit (*1) L5 + L6, L7 + L8 � 5 m

Outddor Unit Use E-82XMECH-4.0GE Use E-42ME at "d".CH-6.5GE Use E-52ME at "d".

Choice of each Multi-kit

In case of using indoor unit as exclusive cooling, use multi-kit of FSG .

Liquid Line

Example: In case of RAS-8FXG

W11 = 43 x 0.120 = 5.2W12 = (8 + 2 + 2 + 2) x 0.065 = 0.9W13 = (5 + 8 + 8 + 3 + 3) x 0.026 = 0.7

Indoor unit

* : Select the "N" indoor Units in order from the smaller indoor unit (Referto Page 12-6). W2=0

Quantity of Additional Refrigerant Charge

The quantity is calculated by the followingequation:

W (kg) = W11+W12+W2

1) W11 (kg): (Total Length (m) of Ø12.7Liquid Piping) x 0.120W12 (kg): (Total Length (m) of Ø9.53Liquid Piping) x 0.065W13 (kg): (Total Length (m) of Ø6.35Liquid Piping) x 0.026

2) W2 (kg)Total quantity of Additional Refrigerant ofEach Indoor unit (kg)

TotalW = W11 + W12 + W13 + W2 = 5.2 + 0.9 + 0.7 + 0 = 6.8 kg

(*1) If piping length between main multi-kit "c" and the farthest indoor unit is longer than5m, the liquid pipe multi-kit should be T-branch (See page 12-1)

Outdoor Unit

Provide oil trap to both gas line at every 10 meterslift

Hi � 50m (Position of outdoor unit is higher)Hi � 40m (Position of outdoor unit is lower)

H2 � 15m

H3 � 4m

L � 30m Actual Lt � 100mEquivalent Lt � 125m

Mark Lt–L8–L7

L0 L2 L5 L7 L1 L3 L4 L6 L8 L

Size 12.7 Ø9.53 Ø6.35 5

Length 43 8 2 2 2 5 8 8 3 3 25

Indoor Unit No.. 0 1 2 3 4Corresponding

Power (HP)1 1.5 1.5 2 2

AdditionalrefrigerantQuantity

Indoor Unit which do not require theadditional charge


Indoor Unit No 0 1 2 3 4Corresponding

Power (HP)1 1 1 1 1

AdditionalRefrigerant

Quantity

Indoor Unit which do not require theadditional charge*

ITEM HEADER BRANCH SYSTEM

Example of Systems





Actual Length Lt �100 mMaximum PipingLength Equivalent Length Lt � 125 m

In the case that the position of outdoor unitis higher than that of indoor unit. H1 � 50 mMaximum Lift




Maximum Lift among Indoor Unit connected to the same CH unit. -

Maximum difference of piping length between each indoorunit and same CH Unit. -


Between Each Multi-Kit and Each IndoorUnit L0 + L1, L2 + L3, L4 + L5, L6 + L7, L8 + L9 � 30 m


Indoor Unit-

Outddor Unit Use E-88XE3 at "a"

CH-4.0GE -

CH-6.5GE -Choice of each Multi-kit


Liquid Line


W11 = 61 x 0.120 = 7.3W12 = (5 + 3 + 3 + 3 + 3) x 0.065 = 1.1W13 = (2 + 4 + 2 + 4 + 2) x 0.026 = 0.4

Indoor unit

* : Select the "N" indoor Units in order from the smaller indoor unit (Referto Page 12-6). W2=0



W (kg) = W11+W12+W2



TotalW = W11 + W12 + W13 + W2

= 7.3 + 1.1 + 0.4 + 0 = 8.8 kg

Outdoor Unit

Provide oil trap to both gas line at every 10 meters lift


H2 � 15m

H3

� 4m

Actual Lt � 100mEquivalent Lt � 125m

Mark Lt-L8L9 L0 L2 L4 L6 L8 L1 L3 L5 L7 L9

Size 12.7 Ø9.53 Ø6.35

Length 61 3 3 3 3 5 2 2 2 4 4


Indoor Unit No 0 1 2 3 4 5 6Corresponding

Power (HP)1 1 1 1 2 2 2

AdditionalRefrigerant

Quantity

Indoor Unit which do not require theadditional charge*

1.4 1.4

ITEM LINE BRANCH SYSTEM

Example of Systems





Actual Length Lt � 100 mMaximum PipingLength Equivalent Length Lt � 125 m

In the case that the position of outdoor unitis higher than that of indoor unit. H1 � 50 mMaximum Lift




Maximum Lift among Indoor Unit connected to the same CH unit. -

Maximum difference of piping length between each indoorunit and same CH Unit. -


Between Each Multi-Kit and Each IndoorUnit L0 + L1, L5 + L7, L8 + L9, L10 + L11, L12 + L13 � 30 m


Indoor Unit (*1) L2 + L3, L4 + L5 � 5 m

Outddor Unit Use E-102ME at "a", "b" and "c", and E-88XE3 at "d"

CH-4.0GE -

CH-6.5GE -Choice of each Multi-kit


LiquidLine


W11 = 61 x 0.120 = 7.3W12 = (5 + 3 + 3 + 3 + 3) x 0.065 = 1.1W13 = (2 + 4 + 2 + 4 + 2) x 0.026 = 0.4

Indoorunit

* : Select the "N" indoor Units in order from the smaller indoor unit (Refer toPage 12-6). W2=1.4 + 1.4 = 2.8



W (kg) = W11+W12+W2



TotalW = W11 + W12 + W13 + W2

= 8.5 + 2.3 + 0.5 + 2.8 = 14.1 kg(*1) If piping length between main multi-kit "c" and the farthest indoor unit is longer than

5m, the liquid pipe multi-kit should be T-branch (See page 12-1)

Mark Lt-L6

L-L14-L13

L6-L5-L4

L0 L2 L4 L7 L9 L11 L13L1 L3 L5 L8 L10 L12 L14

Size «12.7 «9.53 «6.35

Length 48 23 8 4 2 2 5 7 5 3 2 3 2 3 2 3 3

Outdoor Unit

Provide oil trap to both gas line at every 10 meters lift


H2 � 15m

Actual Lt � 100mEquivalent Lt � 125mL6

H3 � 4mL ��P

H2 �15m

H2 � 15m


n� Refrigerant Piping SelectPiping Connection Size of Outdoor Unit

Outdoor Unit Piping Size (mm (in.))

GasModel

Low Pressure High PressureLiquid

RAS-8FXG(Ø25,4 (1))

(Ø22,2 (7/8))Ø19.05 (3/4) Ø12.7 (1/2)FXG

Series

RAS-10FXG Ø28.6 (1-1/8) Ø19.05 (3/4) Ø12.7 (1/2)

Piping Connection of CH Unit

Outdoor Unit Piping Size (mm (in.)

GasModel Direction

Low Pressure High PressureLiquid

To Outdoor Ø15.88 (5/8) Ø12.7 (1/2) Ø9.53 (3/8)

CH-4.0GETo Indoor Ø15.88 (5/8), Ø12.7 (1/2) Ø9.53 (3/8),

Ø6.35 (1/4)*

To Outdoor Ø19.05 (3/4) Ø15.88 (5/8) Ø9.53 (3/8)CH-6.5GE

To Indoor Ø19.05 (3/4) Ø9.53 (3/8)

* Use the accessory reducer for Ø12.7 gas piping and Ø 6.35 liquidpiping

Piping Connection Size of Indoor Unit

Piping SizeModel

Gas Liquid

RPI-0.8FSGERPI-1.0FSGE, RCI-1.0FSGE, RCD-1.0FSGRPK-1.0FSGM, RPF-1.0FSGE, RPFI-1.0FSGERPI-1.5FSGE, RCI-1.5FSGE, RCD-1.5FSGRPK-1.5FSGM, RPF-1.5FSGE, RPFI-1.5FSGE

Ø12.7(1/2)

Ø6.35(1/4)

RPI-2.0FSGE, RCI-2.0FSGE, RCD-2.0FSGRPC-2.0FSGE, RPK-2.0FSGM, RPK-2.3FSGM

Ø15.88(5/8)

Ø6.35(1/4)

RPI-2.5FSGE, RCI-2.5FSGE, RCD-2.5FSG,RPC-2.5FSGERPI-3.0FSGE, RCI-3.0FSGE, RCD-3.0FSG,RPC-3.0FSGE

Ø15.88(5/8)

Ø9.53(3/8)

RPI-4.0FSGE, RCI-4.0FSGE, RCD-4.0FSG,RPC-4.0FSGERPI-5.0FSGE, RCI-5.0FSGE, RCD-5.0FSG,RPC-5.0FSGE

Ø19.05(3/4)

Ø9.53(3/8)

Select the piping connection sizes according to the followingprocedures:

�� Between Outdoor Unit and Multi-Kit:Select the same pipe connection size as the pipe sizeof the outdoor unit.

�� Between Multi-Kit and Multi-Kit:Select the same pipe connection size as the pipe sizeof the outdoor unit. However, select the pipe size «22.2 for RAS-8FXG system

�� Between Multi-Kit and CH Unit:Select the same pipe connection size as the pipe sizeof the CH unit.

�� Between CH Unit and Indoor Unit:Select the same pipe connection size as the pipe sizeof the Indoor unit.

Additional Refrigerant Quantity to Corresponding Horse-Powerof Indoor Unit (Table 1)

Power (HP) ModelAdditional

Quantity (kg)

0.8 RPI-0.8FSGE 0.9

1.0RPI-1.0FSGE, RCI-1.0FSGE,RCD-1.0FSG, RPK-1.0FSGM,RPF-1.0FSGE, RPFI-1.0FSGE

0.9

1.5RPI-1.5FSGE, RCI-1.5FSGE,RCD-1.5FSG, RPK-1.5FSGM,RPF-1.5FSGE, RPFI-1.5FSGE

0.9

2.0RPI-2.0FSGE, RCI-2.0FSGE,RCD-2.0FSG, RPC-2.0FSGE,RPK-2.0FSGM

1.4

2.3 RPK-2.3FSGM 1.4

2.5RPI-2.5FSGE, RCI-2.5FSGE,RCD-2.5FSG, RPC-2.5FSGERPK-2.5FSGM

1.5

3.0 RPI-3.0FSGE, RCI-3.0FSGE,RCD-3.0FSG, RPC-3.0FSGE

1.5

4.0RPI-4.0FSGE, RCI-4.0FSGE,RCD-4.0FSG, RPC-4.0FSGE

2.3

5.0 RPI-5.0FSGE, RCI-5.0FSGE,RCD-5.0FSG, RPC-5.0FSGE

2.6

No additional charge is required up to the number of indoor units asshown in the table below.

Outdoor Unit N: Number ofIndoor Units

Wo: Outdoor UnitRef. Charge (kg)

RAS-8FXG 15.5

RAS-10FXG5

17.0

Note: "N" is the number of indoor Units which do not requirean additional charge"Wo" is Outdoor Unit refrigerant charge beforeshipment.


n� Additional Refrigerant Charge Calculation (ofrefrigerant R407C and R22) FXG Series

Although refrigerant has been charged into this unit, It isrequired that additional refrigerant be charged according topiping length and indoor units.

1. Determine an additional refrigerant quantity according tothe following procedure, and charge it into the system.

2. Record the additional refrigerant quantity to facilitateservice activities thereafter.

Calculating Method of additional Refrigerant Charge (W kg)

�� Additional Refrigerant Charge Calculation for liquidPiping (W1 kg) See example for model RAS-10FXG.And fill in the following table.

Pipe Diameter Total Piping Length Additional Charge (kg)

Ø 19.05 0 � 0.300 = 0

Ø 15.88 0 � 0.195 = 0

Ø 12.7 (30) � 0.120 = 3.6

Ø 9.53 (14+4+12+3+9+3+2) � 0.065 = 3.055

Ø 6.35 (3+6+2+3) � 0.026 = 0.364

Example Additional Charge W1 Total = 7.0 (kg)

Pipe Diameter Total Piping Length Additional Charge

Ø 19.05 � 0.300 =

Ø 15.88 � 0.195 =

Ø 12.7 � 0.120 =

Ø 9.53 � 0.065 =

Ø 6.35 � 0.026 =

This System Additional Charge W1 Total= (kg)

Table 1

Outdoor Unit N: Number ofIndoor Units

Wo: Outdoor UnitRef. Charge (kg)

RAS-8FXG 15.5RAS-10FXG

517.0

Note: N is the number of indoor units which do not require anadditional chargeW0 is Outdoor Unit ref. charge before shipment.

Table 2

Horse Power Charge (kg) Horse Power Charge (kg)0.8 0.9 3.0 1.51.0 0.9 4.0 2.31. 5 0.9 5.0 2.62.0 1.4 8.0 4.32.3 1.4 10.0 4.32.5 1.5

(Example: RCI-1.5FSG is 1.5 HP)

�� Additional Refrigerant Charge Calculation for IndoorUnit (W2 kg)

- Additional charge is NOT necessary for one refrigerantsystem unless the number of indoor unit exceeds N units.

- Determinate the number of Indoor Units which require theadditional refrigerant charge from table 1 and the followingformula.

1XPEHU�RI,QGRRU�8QLWV

1XPEHU�RI�,QGRRU�8QLWV�ZKLFKGR�QRW�UHTXLUH�WKH�DGGLWLRQDO

UHIULJHUDQW�FKDUJH�1

,QGRRU�8QLWV�ZKLFKUHTXLUH�WKH�DGGLWLRQDO

FKDUJH

Example 6 - 5 = 1

ThisSystem

- =

�� Calculate the required additional charge (W2) for theunits from the bigger capacity to smaller ones asshown in table 3

�� Calculate the required additional Charge (W kg)Put weight W1 and weight W2 (calculated in beforeitems) into the following formula.

Total quantity ofadditional charge

W = 7.0 + 1.5 = 8.5 kg

This System W = + = kg

Total Additional Charge W kg

Total Ref. Charge of this System kg

Year Month Day

Charging Work

Charge Refrigerant R407C into the system according to theinstructions described in the "Installation Manual"Record of Additional Charge

Record the Refrigerant Charging quantity in order to facilitatemaintenance and servicing activities. Total refrigerant charge ofthis system is calculated in the following formula.

Total Ref. Charge of This System = W + W0

This System = + =

Table 3

Example This SystemUnit No. Horse-

powerCharge

(kg)Horse-power

Charge(kg)

0 2.5 1.51 2.52 2.03 1.04 1.05 1.0

Indoor Unitswhich do notrequire theadditional

charge

678 – –9 – –

10 – –11 – –12 – –13 – –14 – –15 – –

(W2 kg) 1.5

Ø9.53x4m

Ø9.53x3mØ6.35x6m

Ø6.35x3m

Ø12.7x5m

Ø9.53x14m

Ø9.53x2m

Ø9.53x12mØ9.53x9m

Ø6.35x2m

Ø9.53x3m

Ø6.35x3m


12.1.3.�MULTI KIT

n� Line Branch (Outdoor Units) unit: mm ID: Inner Diameter

RAS-8FXG - E-82XME RAS-10FXG - E-102XME

GA

S (

LO

W)

LIN

EG

AS

(H

IGH

) L

INE

LIQ

UID

LIN

E

n� Line Branch (CH Units) unit: mm ID: Inner Diameter

CH-4.0GE - E-42ME CH-6.5GE - E-52ME

GA

S L

INE

LIQ

UID

LIN

E

To Outdoor Unitor Multi Kit

To Multi Kit

To Indoor Unitor Multi Kit EXPANDER (x2)


To Multi Kit

To Indoor Unitor Multi Kit EXPANDER (x2)

REDUCER


To Multi Kit

To Indoor Unitor Multi Kit


To Multi Kit


To Outdoor Unitor Multi Kit To Multi Kit



To Multi Kit



To Multi Kit



To Multi Kit



To Multi Kit



To Multi Kit



n� Header Branch (Outdoor Units) unit: mm ID: Inner Diameter

E-88XE3

GA

S L

INE

(L

OW

)G

AS

LIN

E (

HIG

H)

LIQ

UID

LIN

E

To Outdoor Unit

Or Multi-Kit

To CH Unit

To Outdoor Unit

Or Multi-Kit

To CH Unit

To Outdoor Unit

Or Multi-Kit

To CH Unit


12.1.4.�DISTRIBUTION METHOD

n� Line DistributionWith line distribution method, it is possible to make the first orthe second main pipe distribution within the third branch.And do not make the main pipe distribution, at or after thefourth branch.

�� Branch Method at 2nd distributor

Correct (better)

Incorrect

�� Branch Method at 3rd distributor

Correct (permit)

Incorrect

(Main Pipe Distribution: Distribution from One Multi-kit to Two Multi-kits)

�� Installation Position- Horizontal Installation

Locate the branch pipes on the same horizontal plane.Make the straight length a minimum of 0.5m after thevertical bend.

�� Vertical Installation

n� Header Distribution

�� Branch MethodDo not connect two header branches consecutively

INCORRECT

Upward Upward

DownwardDownward

Straight lengthMin 0.5m

CORRECT

InclinationMax. � 30°

InclinationMax. � 30°

View from A

Upward

Downward

Upward

Downward

CORRECT

CORRECT

Straight lengthMin. 0.5m

Straight lengthMin. 0.5m

Upward Branch

Downward Branch

Indoor Unit

CORRECT INCORRECT

MainPipe

HeaderHeader

MainPipe

Header Indoor Unit

O.U

1st

2nd

3rd

O.U

1st 2nd

3rd

Incorrect

O.U

1st

2nd 3rd

1st Main PipeDistribution

2nd Main PipeDistribution

Incorrect

2nd Main PipeDistribution1st Main Pipe

Distribution

O.U

1st

2nd 3rd 4th


�� Installation PositionInstall the header horizontally

CAUTION:6HDO�WKH�HQG�RI�EUDQFK�SLSHV�ZKLFK�DUH�QRWFRQQHFWHG��E\�EUD]LQJ�IDFWRU\�VXSSOLHG�FORVLQJ�SLSHV�

n� Combination Branch

It is possible to connect the header to the second line branch,when the first branch is also the line branch.Do not connect a line branch to a header branch.

12.1.5.�INSTALLATION

n� Piping ConnectionWhen connecting liquid piping for the unit with a capacity of1.5 to 2.3HP where the piping is longer than 15 meters, applya piping size of Ø9.53. Fix the connecting pipe as shown inthe following figure. Utilize the insulation attached to theIndoor Unit.

CAUTION:8WLOL]H�FOHDQ�FRSSHU�SLSHV�ZLWKRXW�DQ\�PRLVWXUH�RUIRUHLJQ�PDWHULDO�RQ�WKH�LQWHUQDO�VXUIDFH�RI�SLSHV�:KHQ�FRQQHFWLQJ�UHIULJHUDQW�SLSLQJ��FXW�FRSSHU�SLSHVZLWK�D�SLSH�FXWWHU�DQG�EORZ�WKH�SLSHV�ZLWK�QLWURJHQ�'R�QRW�XWLOL]H�D�VDZ�DQG�D�JULQGVWRQH�RU�RWKHUV�ZKLFKFDXVH�FRSSHU�SRZGHU�:KHQ�FXWWLQJ�SLSHV��VHFXUH�WKH�SDUW�IRU�EUD]LQJ�DVVKRZQ�EHORZ�

A: Outer Ø of Pipe(mm)

B: MinimumDepth (mm)

Over 5, Below 8 6

Over 8, Below 12 7

Over 12, Below 16 8

Over 16, Below 25 10



&DXWLRQV�IRU�5HIULJHUDQW�3LSH�(QGV

When installing pipethrough the wall, secure acap at the end of the pipe.

Do not place thepipe directly on theground

Gas Piping (High & Low)

Horizontally

Horizontally

Liquid Piping

Max. 30

Indoor Unit

Header

The SecondBranch

Line Branch (first Branch)

LineBranch(firstBranch)

Header

Max. 30

CORRECT

INCORRECT

Line Branch

Header

Attach cap or vinyl tape

Hole

Incorrect

IncorrectCorrect

Correct

Attach cap orvinyl tape

IncorrectCorrect

Rain Watercan enter

Cap or vinyl bag rubberband

B

A

To Indoor Unit

To Indoor Unit

To Outdoor Unit

To Outdoor Unit

IndoorUnit

BrazingInsulationAttached toIndoor Unit

Field-SuppliedInsulation

Field-SuppliedRefrigerant Piping

Insulate this partwith the attachedinsulation

Utilize the flare nut ofthe Indoor Unit

Fix this part with theattached cord band orwith tape

Make flares after attachingflare nut to the connectingpipe in the Multi-kit package


n� InsulationShape (cut) and apply field supplied insulation to eachbranch utilizing vinyl tape. Also attach insulation to fieldsupplied piping.

Note: When polyethylene foam is applied, a thickness of10mm for the liquid piping and 15mm to 20mm for thegas piping is recommended.

�� For Line Branch

�� For Header Branch

CAUTION:3HUIRUP�LQVXODWLRQ�ZRUN�DIWHU�WKH�VXUIDFH�WHPSHUDWXUHGHFUHDVHV�WR�WKH�URRP�WHPSHUDWXUH��,I�QRW��LQVXODWLRQPDWHULDO�PD\�PHOW�,I�WKH�HQGV�RI�WKH�SLSLQJ�V\VWHP�DUH�RSHQ�DIWHUDFFRPSOLVKLQJ�SLSLQJ�ZRUN��VHFXUHO\�DWWDFK�FDSV�RUYLQ\O�EDJV�WR�WKH�HQGV�RI�WKH�SLSLQJ��DYRLGLQJ�WKHLQYDVLRQ�RI�PRLVWXUH�DQG�GXVW�

�� For Line Branch

�� For Header Branch

12.2.� REFRIGERANT PIPING WORK FOR INDOOR UNIT


Do not make a gap

Field-SuppliedInsulation

Field-Supplied Insulation

Do not makea gap

cap

Field-SuppliedPiping

cap

cap

cap

Field-SuppliedPiping


12.3.� REFRIGERANT PIPING WORK FOR OUTDOOR UNIT

DANGER:8VH�UHIULJHUDQW�5��&��)RU�5$6��);*�5$6��);*�LQ�WKH�UHIULJHUDQW�F\FOH��'R�QRW�FKDUJH�R[\JHQ�DFHW\OHQH�RU�RWKHU�IODPPDEOH�DQG�SRLVRQRXV�JDVHVLQWR�WKH�UHIULJHUDQW�F\FOH�ZKHQ�SHUIRUPLQJ�D�OHDNDJHWHVW�RU�DQ�DLU�WLJKW�WHVW��7KHVH�W\SHV�RI�JDVHV�DUHH[WUHPHO\�GDQJHURXV�DQG�FDQ�FDXVH�DQ�H[SORVLRQ��,WLV�UHFRPPHQGHG�WKDW�FRPSUHVVHG�DLU��QLWURJHQ�RUUHIULJHUDQW�EH�XVHG�IRU�WKHVH�W\SHV�RI�WHVWV�

12.3.1.�PIPING MATERIALS

1. Prepare field-supplied copper pipes.

2. Select the piping size from the table in page 7.

3. Select clean copper pipes. Make sure there is no dustand moisture inside. Blow the inside of the pipes withnitrogen or dry air, to remove any dust or foreignmaterials before connecting pipes.

Notes:See the item 12.1.2 and 12.1.3 before refrigerantpiping work.For connecting Ø22.2 pipe to RAS-8FXG unit, cutoff the end part of pipe flange which is forconnecting Ø25.4 pipe

Factory-Supplied Pipe Flange for RAS-8FXG

CAUTION:&DXWLRQV�IRU�5HIULJHUDQW�3LSH�(QGVWhen installing pipethrough the wall, secure acap at the end of the pipe.

Do not place thepipe directly on theground

12.3.2.�POSITION OF PIPING CONNECTION FOROUTDOOR UNIT

�� Connect the pipes with the liquid line stop valve andthe gas line stop valve at the outdoor unit as shown.

Refrigerant Piping Connection

® Refrigerant Liquid Piping Connection(«12.7 Flare Nut)

¯ Refrigerant Gas (High) Piping connection(«19.05 Flare Nut)

° Refrigerant Gas (Low) Piping Connection.8HP: «25.4 or 22.2« Brazing10HP: « 28.6 Brazing

�� Pipes can be connected from 3 directions

Note: Do not install piping in front of the screw of the servicepanel. If not, the screw or the service panel can notbe removed

95

8829

Attach cap or vinyl tape

Hole

Incorrect

IncorrectCorrect

Correct

Attach cap orvinyl tape

IncorrectCorrect

Rain Watercan enter

Cap or vinyl bag rubberband

Bottom Base Bottom Side

Rear Side

Front Side


Note: After piping and wiring work are completed, removetwo yellow shipping washers for compressor(s).

12.3.3.�PIPING CONNECTION

�� Confirm that the valve is closed.

�� Prepare a field-supplied bend pipe for liquid line.Connect it to the liquid valve by flare nut through thesquare hole of bottom base.

�� Prepare a field-supplied bend pipe for gas line.Solder it and the factory-supplied pipe flange at theoutside of the unit.

�� Connect the pipe flange to gas valve with the factory-supplied gasket through the square hole of BottomBase. Do not use the gasket that had been attachedto the unit.

�� Solder the bend pipes and field piping.

12.3.4.�TIGHTENINGApply the required tightening torque according to the pipesize or bolt size (see table)

Pipe Size Tightening Torque (kg-m)« 6.35 (1/4) 20 N-m (2 kg-m)

« 9.53 (5/8) 40 N-m (4 kg-m)

« 12.7 (1/2) 60 N-m (6 kg-m)

« 15.88 (5/8) 80 N-m (8 kg-m)

« 19.05 (3/4) 100 N-m (10 kg-m)

Tightening work on the flare nut: (use always two spanners):

Note: Check to ensure that no pressure increase isobserved one hour after vacuum pumping completion.

12.3.5.�EVACUATION AND REFRIGERANTCHARGE

Evacuation and refrigerant charging procedure should beperformed according to the following instructions.

�� Evacuation WorkConnect hoses to the check-joint of the liquid stopvalve, the gas (High) stop valve, the gas (Low) stopvalve.

�� Nitrogen Blow in Air Tight TestConnect hoses to the check-joint of the liquid stopvalve, the gas (High) stop valve, the gas (Low) stopvalve.

�� The stop valve has been closed before shipment.However, make sure that the stop valves are closedcompletely.

�� Connect the indoor unit, CH unit and the outdoor unitwith field-supplied refrigerant piping.

�� Connect the gauge manifold using charging hoseswith a vacuum pump or a nitrogen cylinder to thecheck joints of the liquid line and the gas line stopvalve.

�� Check for any gas leakage at the flare nut connection,by using nitrogen gas to increase the pressure at3.3MPa for FXG outdoor units inside of the field-supplied piping.

�� Operate the vacuum pump for 1 to 2 hours until thepressure decreases lower than a pressure of 756mmHg in vacuum. After vacuuming, cover the checkjoint with the cap and tighten with the torque of12.5~16 N·m (1.25~1.6kg·m).

�� For charging refrigerant, connect the gauge manifoldusing charging hoses with a refrigerant chargingcylinder to the check joint of the liquid line stop valve.Charge the proper quantity of refrigerant according tothe piping length (Calculate the quantity of therefrigerant charge).

Foot ofCompressor

Shipping Washer(yellow-Painted)

Vibration-proofrubber

Vibration-proofrubber

Nut

Factory-Supplied Pipe Flange

Solder by Bottom Side Up

Field-Supplied Bend Pipe

Remove Gasket

Flange

Pipe Flange

Gas Valve

Gasket


�� Fully open the gas line stop valve, and slightly openthe liquid line stop valve.

�� Charge refrigerant by opening the gauge manifoldvalve.

�� Charge the required refrigerant within the differencerange of ±0.5kg by operating the system in cooling.

�� Fully open the liquid line stop valve after completingrefrigerant charge.Check to ensure that there is no gas leakage by theleak detector or bubbling test liquid.In case of using bubbling test liquid, choose the testliquid which does not generate ammonia (NH3) by thechemical reaction

�� Continue cooling operation for more than 10 minutesto circulate the refrigerant.

�� Remove the “close” plate from the stop valve andhook the attached “Open” plate at the stop valve.

Outdoor Unit

(Evacuation and Refrigerant Charge)

Note: Charge the refrigerant correctly after calculation.Overcharge and insufficient charge of the refrigerantmay cause the compressor failure.Insulate the liquid pipe for prevention of the capacitydecrease according to the ambient air conditions andthe dewing on the pipe surface by the low pressure.Check to ensure that there is no gas leakage. Whenlarge amount of the refrigerant leaks, the troubles asfollows may occur:

1. Oxygen deficiency2. Generation of Harmful gas Due to Chemical

Reaction with fire.

CAUTION:&KHFN�IRU�UHIULJHUDQW�OHDNDJH�LQ�GHWDLO��,I�D�ODUJHUHIULJHUDQW�OHDNDJH�RFFXUV��LW�ZLOO�FDXVH�GLIILFXOW\�ZLWKEUHDWKLQJ�RU�KDUPIXO�JDVHV�ZRXOG�RFFXU�LI�D�ILUH�ZDVEHLQJ�XVHG�LQ�WKH�URRP�$Q�H[FHVV�RU�D�VKRUWDJH�RI�UHIULJHUDQW�LV�WKH�PDLQFDXVH�RI�WURXEOH�WR�WKH�XQLWV��&KDUJH�WKH�FRUUHFWUHIULJHUDQW�TXDQWLW\�

12.3.6.�INSULATE PIPESInsulate the refrigerant pipes as shown below

After connecting the refrigerant piping, seal the refrigerantpipes by using the field-supplied insulation material.Insulate the unions and flare-nuts at the pipingconnections completely. Insulate the liquid piping andgas piping completely to avoid decreasing of performanceand dewing on the surface of the pipe.

CAUTION:&DS�WKH�HQG�RI�WKH�SLSH�ZKHQ�WKH�SLSH�LV�WR�EHLQVHUWHG�WKURXJK�D�KROH�'R�QRW�SODFH�SLSHV�RQ�WKH�JURXQG�GLUHFWO\�ZLWKRXWDWWDFKLQJ�D�FDS�RU�YLQ\O�WDSH�WR�WKH�HQGV�

Stop Valve

Insulation(Field Supply)

Refrigerant Piping(Field Supply)

CorrectIncorrect

CH Unit

Nitrogen tank(For Air Tight Test &Nitrogen Blow duringBrazing)

ChargingCylinder

Vacuum Pump

Gas Line

Liquid Line

Oil trap is recommendedat every 10 meters lift

Liquid Stopvalve

Gas Line(Low)Stopvalve

Indoor UnitIndoor UnitCH Unit

Valve(open during evacuation)(close during oil charge)

Gas Line(Low)

Gas Line(High)

Multi-Kit


12.3.7.�STOP VALVEOperation of the stop valve should be performed according tothe below figure.

Hexagonal Wrench Size (mm)

Model LiquidValve

Gas Valve(High)

Gas Valve(Low)

RAS-8FXG 5 10 10RAS-10FXG 5 10 10

(As for wrenches of 5mm and 10mm, use field-supplied wrenches.)

CAUTION:'R�QRW�DSSO\�IRUFH�WR�WKH�VSLQGOH�YDOYH�DW�WKH�HQG�RIRSHQLQJ��1P�RU�VPDOOHU��7KH�EDFN�VHDW�FRQVWUXFWLRQLV�QRW�SURYLGHG�'R�QRW�ORRVHQ�WKH�VWRS�ULQJ��:KHQ�WKH�VWRS�ULQJ�LVORRVHQHG��WKH�VSLQGOH�ZLOO�KRS�RXW�'XULQJ�WKH�WHVW�UXQ��IXOO\�RSHQ�WKH�VSLQGOH��,I�LW�LV�QRWIXOO\�RSHQHG��WKH�GHYLFHV�ZLOO�EH�GDPDJHG�

12.3.8.�DRYER FOR FIELD-PIPINGThe refrigeration oil for the RAS-FSG series outdoor unitseasily absorbs moisture. Therefore, it is required to performsufficient vacuum pumping and to use a dryer in the liquidline, in order to remove moisture in the field-supplied piping.

Item Outdoor Unit Capacity (HP)Equivalent HP 8 10

Model D-P10V

Dryer D-P10V Type

(With valve)Stop Valve 1/2 inches

Dryer KitModel

D-P10V

Applicable0.U. Model

RAS-8FXG, RAS-10FXG

A = 431

B = 70

Dryer

ThermalInsulator for

Dryer

ThermalInsulator forLiquid Valve

Liquid Valve

Liquid ValveConnection 1/2 inches

TemporaryFixing Tape

Note: The above dryer is selected to keep moisture lowerthan 100ppm when the moisture level is 200ppm withthe maximum refrigerant charge before installing. Ifthe actual moisture level is higher than 200ppm,charge the dryer several times according to the level.

�� Do not remove sealing caps for the pipes until the pipesare installed and connected.

Hexagonal Wrench(To open or closespindle valve)

Sindle ValveCounterclockwise...openClockwise...CloseClosed before shipment

Check Joint(Only the charging hosecan be connected.Tighten the cap with atorque of 9 N·m)

Refrigerant Piping

O-Ring(rubber)O-Ring(rubber)

Cap(Tighten the cap with atorque below.Attach this after work.)For Liquid:8-10HP: 29.5 NmFor High pressure Gas:8-10HP: 44 NmFor Low pressure Gas8-10HP: 49 Nm

Ref. Pressure

Dryer

Seal the ends

B

A


�� Install the dryer lower than the main liquid line andwithin the angle shown below.

�� Cover the dryer and liquid valve with the factory-supplied thermal insulator. Perform thermal insulationwork by using factory-supplied tape to avoid anyclearance.

Do not remove sealing caps before connecting.

�� Procedures for Installation

1. Check to ensure that the liquid stop valve in the outdoorunit is completely stopped.

2. Insert the flare nut of the dryer in the liquid line andexpand the liquid pipe for the dryer.

3. Fix the optional dryer and liquid valve by using the flarenuts.

4. Check to ensure that no leakage occurs by applying anairtight test pressure of 3.3MPa.

5. Open the optional liquid valve fully.

6. Perform vacuum pumping for 1 to 2 hours down to0.1 MPa (-756 mmHg) at the gauge manifold.

7. Charge additional and specified refrigerant.

8. Open the spindle of the liquid stop valve in the outdoorunit.

9. Perform a trial operation in order to collect moisture intothe dryer.

Note: The collecting time depends on the level of themoisture. It is recommended that total operationhour be 45 hours.

10. If the sight-glass indicates green, collecting moisturework is completed. However, the color is yellow,proceed with the following processes.

11. Completely close the optional valve and the liquid stopvalve.

12. Remove the dryer. Pay a special attention to theconnections, since liquid refrigerant is discharged.

13. Mount a new dryer and perform vacuum pumping fromthe check joint at the liquid stop valve in the outdoorunit.

14. If the vacuum degree lower than -758mmHg isavailable, stop the vacuum pumping work. If not,continue the vacuum pumping work.

12.4.� REFRIGERANT PIPING WORK FOR CH UNIT

12.4.1.�PIPING MATERIALS

�� Prepare fiels supplied cooper pipes.

�� Select clean cooper pipes. Make sure that there is nodust and moisture inside.Before connecting pipes, blow the inside of the pipeswith nitrogen or dry air, to remove any dust or foreignmaterials.

�� Select the piping size from the Piping connection ofCH unit on page 12-7.

12.4.2.�PIPING CONNECTION

�� Position of piping connection is shown in Chapter11.9, page 11-3.

�� Connect the accessory strainers and reducers asshown in next figure.

Part Name Connection CH-4.0GE CH-6.5GE

Strainer AConnect to the gas (high)piping «12.7 «15.88

Stariner B Connect to the gas piping «15.88 «19.05

Reducer AConnect to the liquidpiping, in case ofconnecting a «6.35 pipe

With Without

Reducer BConnect to the gaspiping, in case ofconnecting a «12.7 pipe

With Without

Main Liquid Line

Within this angle

Sight-glass

Liquid Stop ValveIncorrect

Dryer

Flare-Nut Liquid ValveFlare-Nut

Reducer BStrainer B

View from TopField-SuppliedPiping

To OutdoorUnit

To IndoorUnit

Reducer A Strainer A


�� When tightening the flare nut, use two spanners asshown below

Connecting Accessory Parts

Pipe Size Tightening Torque Nm

Ø 9.53 (3/8) 40

Ø12.7 (1/2) 60

Ø15.88 (5/8) 80

Ø19.05 (3/4 100

�� After connecting the refrigerant piping, seal therefrigerant pipes by using the factory-suppliedinsulation materials as shown below.

CAUTION:&DS�WKH�HQG�RI�WKH�SLSH�ZKHQ�WKH�SLSH�LV�WR�EHLQVHUWHG�WKURXJK�D�KROH�'R�QRW�SODFH�SLSHV�RQ�WKH�JURXQG�GLUHFWO\�ZLWKRXWDWWDFKLQJ�D�FDS�RU�YLQ\O�WDSH�WR�WKH�HQGV�

To IndoorUnit

CH-4.0GE Only Insulation («26iD) Insulation («26iD)

Insulation («38iD) Insulation («38iD) Insulation(«26iD) - CH-4.0GE(«26iD) - CH-6.5GE

ToOutdoor

Unit

InsulationCord band

CH Unit

Strainer Reducer

CorrectIncorrect


12.5.� CAUTION ON REFRIGERANT LEAKAGE

Specifiers/installers have responsibility to follow local codesand regulation which specify safety requirements againstrefrigerant leakage

12.5.1.�MAXIMUM PERMISSIBLECONCENTRATION OF HCFC GAS

The refrigerant R407C (or R22), charged in the SET-FREEFXG system, is an incombustible and non-toxic gas.However, if leakage occurs and gas fills a room, it may causesuffocation.The maximum permissible concentration of HCFC gas,R407C in air is 0.3 kg/m³, R22 in air is 0.3 kg/m³, accordingto the refrigeration and air conditioning facility standard (KHKS 0010) by the KHK (High Pressure Gas ProtectionAssociation) Japan.Therefore, some effective measure must be taken to lowerthe R407C or R22 concentration in air below 0.3 kg/m³, incase of leakage.

12.5.2.�CALCULATION OF REFRIGERANTCONCENTRATION

1. Calculate the total quantity of refrigerant R (kg) chargedin the system connecting all the indoor units of rooms tobe air-conditioned.

2. Calculate the room Volume V (m³) of each room.

3. Calculate the refrigerant concentration C (kg/m³) of theroom according to the following equation:

R— = CV

R: Total Quantity of Charged Refrigerant (kg)V: Room Volume (m³)C: Refrigerant Concentration (��NJ�P³ for

R22 and *0.31 kg/m³ for R407C)

* Use this value for reference only, since this value is notfixed yet.

12.5.3.�COUNTERMEASURE FOR REFRIGERANTLEAKAGE ACCORDING TO KHKSTANDARD

The facility shall be arranged as follows referring to the KHKstandards, so that the refrigerant concentration will be bellow0.3 kg/m³.

1. Provide a shutterless opening which will allow fresh air tocirculate into the room.

2. Provide a doorless opening of 0.15% or more size to thefloor area.

3. Provide a Ventilator, Linked with a gas leak detector, of0.4 m³/min or more ventilating capacity per JapaneseRefrigeration Ton (=compressor displacement m³/h/8.5)of the air conditioning system utilizing refrigerant R-22.

RAS-8FXG............3.74 tonRAS-10FXG..........4.01 ton

4. Pay a special attention to the place, such as a basement,etc., where refrigerant can stay, since refrigerant isheavier than air.

See Example below.

Example:

Room R (kg) V (m³) C (kg/m³) Countermeasure

A 30 150 0.2 -

B 65 500 0.13 -

C 35 100 0.35 0.06 m² Opening

D 35 100 0.35 0.06 m² Opening

C+D 35 200 0.175 -

E 35 50 0.72 m³/min Ventilator Linkedwith Gas Leak Detector

Example:

British Standard BS4434 1989R22 Commercial Office Building Class D OccupancyMR = CxVMR: Maximum Charge or Leakage of Refrigerant (kg)C: Maximum Allowable Concentration = 0.17 (kg/m³)V: Volume of Space (m³)

Opening: 0.06 m²Gas Leak Detector

Ventilator 2 m³/min

Floor40 m²

Floor40 m²

Floor 200 m² Floor 60 m²Floor20 m²

Hei

ght

2.5

m

System B Outdoor UnitSystem A Outdoor Unit

System ARefrigerant: 35 kg

E D C B A

System BRefrigerant: 30 kg


12.6.� SPECIAL ATTENTION REGARDING NEW REFRIGERANT

12.6.1.�INTERCHANGEABILITY TOOLS

Please use tools and measuring instruments only for the new refrigerant which directly touch refrigerant.y: Interchangeability is available with current R22z: Only for new Refrigerant R407C (No Interchangeability with R22)

Measuring Instrument and ToolInterchangeability

with R22Reason of Non-Interchangeability and Attention

( : Strictly required) Use

Pipe CutterChamfering Reamer y - Cutting Pipe

Removing Burrs

Flaring Tooly

Flaring for tubes

Extrusion AdjustmentGauge -

�� In the case that a current tool is used, extrudedallowance of 1mm should be secured by using anextrusion adjustment gauge.

�� The flaring tools for R407C are applicable to R22.Dimensional Controlfor Extruded Portion ofTube after Flaring

Pipe Bender y - Bending

Expanding Tool y - Expanding Tubes

Torque Wrenchy - Connection of Flare

Nut

Brazing Tool y �� Perform correct brazing work. Brazing for tubes

Nitrogen Gasy

�� Strict control against contamin (Blow nitrogen duringbrazing).

Prevention fromOxidation duringBrazing

RefrigerantPipe

Lubrication Oil (forFlare Surface) z

�� Use a synthetic oil which is equivalent to the oil usedin the refrigeration cycle.

�� Synthetic oil absorbs moisture quickly

Applying oil to theFlared Surface

Refrigerant Cylinderz

�� Check refrigerant cylinder color.

�� Liquid refrigerant charging is required regardingzeotoropic refrigerant.

Refrigerant Charging

Vacuum Pump y

Adapter for VacuumPump z

�� The current ones are applicable. However, it isrequired to mount a vacuum pump adapter whichcan prevent from reverse flow when a vacuumpump stops, resulting in no reverse oil flow.

Vacuum Pumping

Manifold Valve z

Charging Hose

z

�� No interchangeability is available due to higherpressures when compared with R22.

�� Do not use current ones to the new refrigerant. Ifused, mineral oil will flow into the cycle and causesludge, resulting in clogging or compressor failure.

Vacuum Pumping,Vacuum Holding,Refrigerant Chargingand Check ofPressures

Charging Cylinderz

�� Special attention is required when refrigerant ischarged, since composition may change

Refrigerant Charging

Weight Scaley -

Measuring Instrumentfor RefrigerantCharging

VacuumDrying

•Refrigerant

Charge

Refrigerant GasLeakage Detector z

�� The current gas leakage detector (R22) is notapplicable due to different detecting method.

Gas Leakage Check

!

!

!

!

��DRAIN PIPING 1

13.� DRAIN PIPING

13.1.�GENERAL

All general data related to FXG Seriesare the same as for FSG Series. Pleaserefer to Technical Catalogue for FSG

13.2.�RPI (IN-THE-CEILING TYPE)

13.3.�RCI (4-WAY CASSETTE TYPE)

13.4.�RCD (2-WAY CASSETTE TYPE)

13.5.�RPK (WALL TYPE)

13.6.�RPF AND RPFI (FLOOR TYPE AND FLOOR CONCEALED TYPE)

13.7.�RPC (CEILING TYPE)


13.8.�OUTDOOR UNIT DRAIN-KIT (DBS-26)

All data related to Outdoor Unit Drain-Kit(DBS-26) for FX Series are the same asfor FS Series. Please refer to TechnicalCatalogue for FSG

��ELECTRICAL WIRING 1

14.� ELECTRICAL WIRING

1RWH� $OO�WKH�ILHOG�ZLULQJ�DQG�HOHFWULFDO�FRPSRQHQWV�PXVWFRPSO\�ZLWK�ORFDO�FRGHV�

14.1.� COMMON WIRING

14.1.1.� ELECTRICAL WIRING BETWEEN INDOORUNIT AND OUTDOOR UNIT

Connect the electrical wires between the indoor unit and theoutdoor unit, as shown below.

Check to ensure that the terminal for power source wiring(terminals “L1” to “L1” and “N” to “N” of each terminal board:AC380-415V), and intermediate wires (Operating Line:terminals “1” to “1” or “3” and "2" to “2” or "4" of each terminalboard: DC5V) between the Outdoor unit to CH-box andbetween the CH-box to Indoor Unit coincide correctly. If not,some component will be damaged.

� Follow local codes and regulations when performingelectrical wiring.

� Connect the operation wiring to the units in the samerefrigerant cycle (The refrigerant piping and the controlwiring should be connected to the same indoor units). Ifthe refrigerant piping and the control wiring areconnected to the units in the different refrigerant cycle, itmay cause a abnormal operation.

� Use twist pair wire (more than 0.75mm2) for operationwiring between outdoor unit and indoor unit, andoperation wiring between indoor unit and indoor unit.

� Use 2-core wire for the operating line (Do not use wirewith more than 3 cores).

� Use shielded wires for intermediate wiring to protect theunits from noise obstacle at length of less than 300mand size complied with local code.Connect the operating line for the units in the samerefrigerant cycle (The refrigerant line shall be connectedto the indoor units with the refrigerant piping connectedto the same outdoor unit). In the case that each of therefrigerant piping and the operating line is connected tothe units of different cycle, it may cause an abnormaloperation.

� Open a hole near the connection hole of power sourcewiring when multiple outdoor units are connected fromone power source line.

� The recommended breaker sizes are shown in Table ofelectrical data and recommended Wiring, BreakerSize/1 O.U.

� In the case that a conduit tube for field-wiring is notused, fix rubber bushes with adhesive on the panel.

� All the field wiring and equipment must comply withlocal and international codes.

�$77(17,21�3D\�DWWHQWLRQ�WR�WKH�FRQQHFWLRQ�RI�WKH�RSHUDWLQJ�OLQH�,QFRUUHFW�FRQQHFWLRQ�PD\�FDXVH�WKH�IDLOXUH�RI�3&%�

FX Type Outdoor UnitMax.4 Outdoor Units

No.0 SystemOutdoor Unit



Main Switch

ELB

No.0 System Indoor Units(Max.12 Units per Refrigerant Cycle)

ELB, Fuse-FreeBreaker or MainFuse

Models:RAS-8FXGRAS-10FXG

No.0 GroupCH Unit

No.1 GroupCH Unit

ELB, Fuse-FreeBreaker or Main Fuse

Operating Line(DC5V: Shielded Wires)

Main Switch

No.1 SystemIndoor Unit

No.1 SystemCH Unit

Field Wiring

Field Wiring

TB: Terminal Board

PCB: Printed Circuit Board

��2

Table of Terminal Connection

:LULQJ 6\VWHP>&RQQHFWLRQ��&RQQHFWLRQ�RI

7HUPLQDOV�@[O.U.-O.U.(L1-L1, L2-L2, L3-L3, N-N)][CH-CH (L12-L11, N2-N1][CH-I.U. (L12-L1, N2-N1]

Power Supply FXG

[I.U.-I.U.(L1-L1, N-N)][O.U.-O.U., O.U.-CH, CH-CH,I.U.-I.U.(1-1, 2-2)]Operating FXG[CH-I.U. (3-1, 4-2)]

O.U.: Outdoor Unit, I.U.: Indoor unit, CH: CH box

Electrical Data and Recommended Wiring, Breaker Size/1Outdoor Unit

(/%

0RGHO3RZHU6XSSO\

0D[5XQQLQJ&XUUHQW

�$�

3RZHU6XSSO\/LQH

��PP�

1RPLQDOFXUUHQW

�$�

1RPLQDO6HQVLWLYH&XUUHQW�P$�

)XVH

�$�

5$6��);* ��0/)&��64

5$6��);*

��9��+] ��

0/)&��64

��

ELB: Earthleakage Breaker: Apply low sensibility type.MLFC: Flame Retardant Polyflex Wire.

14.1.2.� H-LINK SYSTEM1RWH� 7KH�+�/,1.�V\VWHP�FDQ�QRW�EH�DSSOLHG�WR�WKH�F\FOH

ZLWK�WKH�ROG�PRGHO�XQLW�RU�WKH�XQLW�ZLWK�ROGWUDQVPLVVLRQ�

1. ApplicationThe new H-LINK wiring system requires only two (2)transmission wires connecting each indoor unit andoutdoor unit for up to 16 refrigerant cycles, andconnecting wires for all indoor units and all outdoor unitsin series.This H-LINK system can be applied to the followingmodels.

,QGRRU�8QLW 2XWGRRU�8QLW &+�8QLW

RPI-OOOFSGERCI-OOOFSGERCD-OOOFSGRPK-OOOFSGMRPF-OOO�FSG(E)RPFI-OOOFSG(E)RPC-OOOFSGE

RAS-OOOFXG CHOOGE

2. FeaturesThe H-LINK has the following features and specifications:

� Features:The total wiring length is remarkably reduced.Only one (1) connection is required for the wiringbetween the indoor unit and outdoor unit.Easy wiring connection to the central controllers

Example of H-LINK System:

� Specifications:Transmission Wire: 2-WirePolarity of Transmission Wire: Non-Polar WireMaximum Outdoor Units To Be Connected: 16 Units perH-LINK system.Maximum Indoor Units To Be Connected: 16 Units percycle and 128 Units per H-LINK systemMaximum Wiring Length: Total 1000m (including CS-NET)Recommended Cable: Twist Pair Cable with Shield,over 0.75mm2 (Equivalent to KPEV-S)Voltage: DC5V

1RWH� 2WKHU�FDEOHV�H[FHSW�IRU�7ZLVW�3DLU�&DEOH�FDQ�QRW�EHXVHG�IRU�+�/,1.�V\VWHP�

3. System Example of H-LINK

� Using H-LINK System For Only Air ConditionersThere are two typical cases of using H-LINK system;(1) Using H-LINK System For Only Air Conditioners, and(2) Using H-LINK System For Air Conditioners WithCentral Control Device, and the system examples areas shown below

- Line Connection with All units

OutdoorUnit

TransmissionWires

Refrigerant Piping

Indoor Units

: One Refrigerant Cycle

Indoor Units

Outdoor Unit

Do notmake wiringin a loop

CH Units

��3

- Line Connection for Each Floor

- Connection with One Main Line and branch Lines forUnits

� Using H-LINK System For Air Conditioners With CentralControl Device

- In case that H-LINK is applied when electrical wiring isperformed

- In case that H-LINK is not applied when electrical wiringis performed

1RWH� 7KH�PD[LPXP�TXDQWLW\�RI�XQLWV�WR�EH�FRQQHFWHG�LV��RXWGRRU�XQLWV�DQG��LQGRRU�XQLWV�'R�QRW�PDNH�D�ZLULQJ�LQ�D�ORRS�,Q�WKH�FDVH�WKDW�+�/,1.�LV�QRW�DSSOLHG�ZKHQ�HOHFWULFDOZLULQJ�LV�SHUIRUPHG�DV�VKRZQ�DERYH��+�/,1.�LVDSSOLHG�DIWHU�WKH�LQVWUXPHQW�ZLULQJ�LV�FRPSOHWHG�7KHUHIRUH��WKH�GLS�VZLWFKHV�DUH�UHTXLUHG�WR�EH�VHWDFFRUGLQJ�WR�³6HWWLQJ�RI�'LS�6ZLWFKHV�RQ�3&%´�,Q�FDVH�RI�ZDOO�W\SH��53.��LQGRRU�XQLW��WKH�ZLUHGUHPRWH�FRQWURO�VZLWFK�RU�WKH�UHFHLYHU�NLW�LV�UHTXLUHG�53.�ZLUHOHVV�RSHUDWLRQ�ZLWK�WKH�EXLOW�LQ�UHFHLYHU�SDUWLV�QRW�DYDLODEOH�

4. Dip Switch Setting of Indoor PCB and Outdoor PCBIt is required to set dip switches of every indoor unit andoutdoor unit

� Dip Switch Setting (example:)

0DUN 'HVFULSWLRQ

® DSW10 (End Terminal Resistance)¯ DSW1 (Refrigerant Cycle)° Outdoor Unit± Indoor Units² DSW5 (Refrigerant Cycle)³ RSW (Indoor Unit Address)

Indoor Units

Outdoor Unit

CS-NET

Instrument Wiring

Indoor Units

OutdoorUnit

CS-NET

~Instrument Wiring

Cycle No 0 Cycle No 1 Cycle No 2

BeforeShipment Cancelation Cancelation®

¯

°

±

²

³

Indoor Units

Outdoor Unit

CH Units

Indoor Units

Outdoor Unit

CH Units

CH Unit

CHUnits

��4

8QLW1DPH�RI�'LS

6ZLWFK0DUN

6HWWLQJ�%HIRUH6KLSPHQW

)XQFWLRQ

Refrigerant Cycle DSW1ON For setting refrigerant cycle address of outdoor unit. Set the

DSW1 not to overlap the setting of other outdoor units in thesame H-LINK system

OutdoorUnit

End TerminalResistance

DSW10

ON

1 2

For matching impedance of transmission circuit. Set the DSW10according to the quantity of outdoor units in the H-LINK system.Setting of End Terminal ResistanceBefore shipment, No.1 pin of DSW10 is set at the “ON” side.In the case that the outdoor units quantity in the same H-link is 2or more, set No.1 pin of DSW10 at the “OFF” side from the 2ndunit. If only one outdoor unit is used, no setting is required.

Refrigerant Cycle DSW5ON For setting refrigerant cycle address of indoor unit. Set the DSW5

corresponding to the address of outdoor unit in the samerefrigerant cycle.

IndoorUnit

Indoor Unit Address RSW

0 For setting indoor unit address. Set the RSW not to overlap thesetting of other indoor units in the same refrigerant cycle. (If notset, the automatic address function is performed.)

5. Electrical Cable Model

0DNHU1,+21'(16(1

.2*<2.$<

+,7$&+,'(16(1

1,+21'(16(1

,1'8675,(6Without Shield JKEV KPEV KNPEVWith Shield (Copper Foil) JKEV-S KPEV-S KNPEV-SWith Shield (Braiding) JKEV-SB KPEV-SB KNPEV-SB

1RWH� %RWK�WKH�FDEOH�ZLWK�VKLHOG�DQG�WKH�FDEOH�ZLWKRXW�VKLHOGDUH�DYDLODEOH�7KH�WZLVW�SDLU�FDEOH�FDQ�EH�VXSSOLHG�DV�WKH�V\VWHPSDUWV��0RGHOV��35&��/��P��35&��/��P��35&��/��P�

��5

14.2.� ELECTRICAL WIRING FOR INDOOR UNIT


14.3.� ELECTRICAL WIRING FOR OUTDOOR UNIT

WARNING:- Turn OFF the main power switch to the indoor unit

and the outdoor unit and wait for more than 3minutes before electrical wiring work or a periodicalcheck is performed.

- Check to ensure that the indoor fan and the outdoorfan have stopped before electrical wiring work or aperiodical check is performed.

- Protect the wires, electrical parts, etc. from rats orother small animals. If not protected, rats or othersmall animals may gnaw at unprotected parts and atthe worst, a fire will occur.

- Avoid the wires from touching the refrigerant pipes,plate edges and electrical parts inside the unit. Ifnot do, the wires will be damaged and at the worst,a fire will occur.

CAUTION:7LJKWO\�VHFXUH�WKH�ZLUHV�ZLWK�WKH�FRUG�FODPS�LQVLGH�WKHRXWGRRU�XQLW�

Note: )L[�WKH�UXEEHU�EXVKHV�ZLWK�DGKHVLYH�ZKHQ�FRQGXLWWXEHV�WR�WKH�RXWGRRU�XQLW�DUH�QRW�XVHG

14.3.1.� GENERAL CHECK

1. Make sure that the field-selected electrical components(main power switches, circuit breakers, wires, conduitconnectors and wire terminals) have been properlyselected according to the electrical data indicated in theTechnical Catalog. Make sure that the componentscomply with National Electrical Code (NEC).

2. Check to ensure that the power supply voltage is within±10% of the rated voltage.

3. Check the capacity of the electrical wires. If the powersource capacity is too low, the system cannot be starteddue to the voltage drop.

4. Check to ensure that the ground wire is connected.

14.3.2.� ELECTRICAL WIRING CONNECTIONThe electrical wiring connection for the outdoor unit is shownbelow.

1. Connect the power supply wires to L1, L2, L3 and N (for380-415V/50Hz) for the three phase power source on theterminal board and ground wires to the terminals in theelectrical control box.

2. Connect the wires between the outdoor and CH-box toterminals 1 and 2 on the terminal board.

3. Do not lead wires in front of the fixing screw of the servicepanel. If done, the screw can not be removed.

CAUTION:)L[�WKH�RSHUDWLRQ�VKLHOGHG�ZLUHV�EHWZHHQ�WKH�LQGRRUDQG�RXWGRRU�XQLW�ZLWK�D�PHWDO�EDQG�

Press the metal bandby pinchers, afterinserting the shieldedwire to metal band.

Shielded Wire.

Metal Band.

Electrical box

Operating wiring- Between I.Us. and O.Us

DC5V (Non pole)

Cord Cramp

Terminal of Earth

Operating wiring- Between O.Us. and O.Us.

DC5V (Non pole)

Power source Wiring(AC380-415V/50Hz)

Connection Holeof Power SourceWiring ∅ 56

Connection Holes ofOperation Wiringbetween Indoor Unitsand Outdoor Unit

Connection Hole ofPower SourceWiring ∅ 52

Connection Holes ofOperation Wiring betweenIndoor Units and Outdoor Unit

��6

14.3.3.� SETTING OF DIP SWITCHES FOROUTDOOR UNIT

n Quantity and Position of Dip Switches

The PCB in the outdoor unit is operated with 10 types of dipswitches and 3 types of push switch.Dips switches position is the following:

DSW1

DSW7

DSW4

DSW3

DSW5DSW2

DSW6

DSW10

SEG1

DSW9 PSW1

PSW2

PSW3DSW8

8 88 8SEG2

Note: 7KH�PDUN�³n³�LQGLFDWHV�SRVLWLRQ�RI�GLSV�VZLWFKHV�)LJXUHV�VKRZ�VHWWLQJ�EHIRUH�VKLSPHQW�RU�DIWHUVHOHFWLRQ�%\�XVLQJ�'6:��RU��WKH�XQLW�LV�VWDUWHG�RU�VWRSSHGDIWHU��WR��VHFRQGV�DIWHU�WKH�VZLWFK�LV�RSHUDWHG�

CAUTION:%HIRUH�VHWWLQJ�GLSV�VZLWFKHV��ILUVWO\�WXUQ�RII�SRZHUVRXUFH�DQG�VHW�WKH�SRVLWLRQ�RI�WKH�GLSV�VZLWFKHV��,I�WKHVZLWFKHV�DUH�VHW�ZLWKRXW�WXUQLQJ�RII�WKH�SRZHU�VRXUFH�WKH�FRQWHQWV�RI�WKH�VHWWLQJ�DUH�LQYDOLG�6HWWLQJ�IRU�WUDQVPLVVLRQ�LV�UHTXLUHG�WR�VHW�WKHUHIULJHUDQW�F\FOH�1RV��DQG�HQG�WHUPLQDO�IRU�WKLV�+�OLQNV\VWHP�

n DSW1: Refrigerant cycle no. setting

Setting is required if H-Link is used. Setting position beforeshipment are all OFF (Refrigerant cycle No. 0). In the sameRefrigerant Cycle set the same refrigerant cycle no. for theoutdoor unit and for the indoor units as shown below.

Cycle No. 0 1 2 3

SettingPosition

ONOFF

ONOFF

ONOFF

ONOFF

Cycle No. 4 5 6 7

SettingPosition

ONOFF

ONOFF

ONOFF

ONOFF

Cycle No. 8 9 10 11

SettingPosition

ONOFF

ONOFF

ONOFF

ONOFF

Cycle No. 12 13 14 15

SettingPosition

ONOFF

ONOFF

ONOFF

ONOFF

n DSW2: Capacity settings

Not setting is required. Each outdoor unit is set as shownbefore shipment.

5��&6HWWLQJ3RVLWLRQ

RAS-8FXGON

OFF

RAS-10FXGON

OFF

n DSW3: High difference

Setting is required

Setting before shipment:� The Outdoor Unit is located higher than

Indoor Unit (0~20m)

ONOFF

� The Outdoor Unit is located higher thanIndoor Unit (20~50m)

ONOFF

� The Outdoor Unit is located lower thanIndoor Unit (0~20m)

ONOFF

� The Outdoor Unit is located lower thanIndoor Unit (20~40m)

ONOFF

n DSW4: Test Operation & Service Settings

Setting is required. This dip switch is utilized for testoperation or when servicing operation is performed.

� Setting before shipmentON

OFF

� Test Cooling OperationON

OFF

� Test Heating OperationON

OFF

� Enforced Compressor StopON

OFF

��7

n DSW5: Optional Function Setting

Setting is required. Set the dip switch according to yourrequirements.

� Before shipment

� Power Supply 380/50-60 Hz

ONOFF

� Circulator Function ofHeating Thermo OFF

ONOFF

� Night Shift (Low noise)ON

OFF

� Cancellation of Outdooramb. temp. limit of Heating

ONOFF

� Cancellation of Outdooramb. temp. limit of Cooling

ONOFF

� Defrosting conditionchange for Cold Area

ONOFF

� Power Supply 415/50 HzON

OFF

� Power Supply 220V/60HzON

OFF

n DSW6: Piping Length

� Before shipment and length < 25 mON

OFF

� 25 ≤ Total length < 50ON

OFF


OFF


OFF

n DSW7: Compressor Emergency Operation

Setting is not required. All compressor are running exceptcompressor selected

� Before shipmentON

OFF

� Except Compressor No. 1ON

OFF


OFF


OFF


OFF

n DSW8: Test Operation & Service Setting II

No setting is required.


OFF

� Exchanged Compressor OperationON

OFF

n DSW9: Optional Functions Setting II

No setting is required.


OFF

n DSW10: Transmitting Setting

Setting is required for cancellation of end resistance

� Before shipment, No. 1 pin of DSW10 isset at ON side

ONOFF

� In case that Outdoor Unit quantity in thesame H-Link is 2 or more, set No. 1 pin ofDSW10 at the OFF side from 2nd Unit. Ifonly one Outdoor Unit is used, no setting isrequired.

ONOFF

� In case of applying high voltage to theterminal 1, 2 of TB1, the fuse on the PCBis cut.

� In such a case, first connect the wiring toTB1 and then turn on #2

ONOFF

n Push switch

Manual defrosting PSW1

for Check PSW2PSW3

��8

14.4.� ELECTRICAL WIRING FOR CH UNIT

WARNING:- Turn OFF the main power switch to the CH unit, the

indoor unit and the outdoor unit before electricalwiring work or a periodical check is performed.

- Protect the wires, electrical parts, etc. from rats orother vermin.

- Check the item below before turning ON the mainswitch.In case that the power source for indoor unit 240V(nominal voltage), change CN21 (connector) toCN22 of transformer (TF1) in the electrical controlbox as shown below

Electrical Wiring Diagram of Transformer (TF1)

CAUTION:- wrap the accessory packing around the wires, and

plug the wiring connection hole with the sealmaterial to protect the product from any condensatewater or insects.

- tightly secure the wires with the cord clamp insidethe electrical box.

14.4.1.� GENERAL CHECK

� Make sure that the field-selected electrical components(main power switches, circuit breakers, wires, conduitconnectors and wire terminals) have been properlyselected according to the electrical data indicated inTechnical Catalogue. Make sure that the componentscomply with National Electrical code (NEC)

� Check to ensure that the power supply voltage is within±10% of rated voltage.

� Check the power source capacity is too low, the systemcannot be started due to the voltage drop.

� Check to ensure that the ground wire is connected.

14.4.2.� ELECTRICAL WIRING CONNECTION

The electrical wiring connection is shown in Electrical WiringDiagram figure.� Turn OFF the main power switch and take off the electrical

box cover of CH unit.� Cut out the center of the rubber bushing in the wiring

connection hole, as shown below.� Connect the power supply and earth wires to the terminals

in the electrical box.� Tightly clamp the wires using the cord clamp inside the

electrical box.� Fix the electrical box cover after wiring work.

14.4.3.� SETTING OF DIP SWITCHES

n Position of Dip Switches

The PCB2 in the electrical box of CH unit is equipped with 2types of dip switches (DSW2, DSW5), as shown in the figurebelow.

n Setting of Dip Switches

The dip switches are set before shipment and no setting inthe field is required. These are utilized for the self-diagnosisof PCB.

1RWH� 7KH�"n"�PDUN�LQGLFDWHV�SRVLWLRQ�RI�GLS�VZLWFKHV�7KH�DERYH�ILJXUHV�VKRZ�WKH�VHWWLQJ�EHIRUH�VKLSPHQW�

CAUTION:Before setting dip switches, firstly turn OFF powersource and set the position of the dip switches. If theswitches are set without turning OFF the powersource, the switches can not function.

Connectorfor 240V

Connectorfor 220V

Cut Inside

RubberBushing

Factory Setting Position(Dip Switch)

DSW5 DSW2

PCB1

DSW5 DSW2

��INSTALLATION OF OPTIONAL REMOTE CONTROLLER 1

15.� INSTALLATION OF OPTIONAL REMOTE CONTROLLER

15.1.� INSTALLATION OF REMOTE CONTROL SWITCH <PC-2H2>

15.2.� WIRING SYSTEM FOR OPTIONAL REMOTE CONTROL SWITCH (PC-2H2)

15.3.� INSTALLATION OF REMOTE CONTROL SWITCH (CORE-FUNCTION) <PC-5H>

15.4.� INSTALLATION OF 7-DAY TIMER <PSC-3T>

15.5.� WIRING SYSTEM FOR OPTIONAL 7-DAY TIMER (PSC-3T)

15.6.� INSTALLATION OF CENTRAL STATION <PSC-3S1>

15.7.� WIRING SYSTEM FOR OPTIONAL CENTRAL STATION (PSC-3S1)

15.8.� INSTALLATION OF RECEIVER KIT <PC-RLH4>

All data related to Installation of OptionalRemote Controller for FXG Series arethe same as for FSG Series. Pleaserefer to Technical Catalogue for FSG

TEST RUN

161

16.� TEST RUN

When installation is completed, perform test run according tothe following procedure, and hand over the system to thecustomer. Perform test run regarding indoor units one byone in order, and confirm that the electrical wiring and therefrigerant piping are correctly connected.Start the indoor units one by one in order to confirm that theyare correctly numbered.Test run should be performed according to the “16.2 TestRun Procedure” on next page and use the Table on page16-6 for recording test run.

WARNING:� Do not operate the system until all the check points have

been cleared.a. Check to ensure that the electrical resistance is

more than 1 megohm, by measuring the resistancebetween ground and the terminal of the electricalparts. If not, do not operate the system until theelectrical leakage is found and repaired. Do notimpress the voltage on the terminals fortransmission 1 and 2.

b. Check to ensure that the stop valves of the outdoorunit are fully opened, and then start the system.

c. Check to ensure that the switch on the main powersource has been ON for more than 12 hours, towarm the compressor oil by the oil heater

� Pay attention to the following items while the system isrunning.

a. Do not touch any of the parts by hand at thedischarge gas side, since the compressor chamberand the pipes at the discharge side are heatedhigher than 90°C.

b. DO NOT PUSH THE BUTTON OF THE MAGNETICSWITCH(ES), it will cause a serious accident.

� Do not touch any electrical components for more than threeminutes after turning OFF the main switch.

16.1.� CHECKING BEFORE TEST RUN

1. Confirm that the gas line stop valve and the liquid linestop valve are fully open.

2. Confirm that the leakage of the refrigerant does not exist.The flare nuts are sometimes loosened by vibrationduring transportation.

3. Check that the refrigerant piping and the electrical wiringconform to the same system, and check that the dipswitch (DSW1) setting of unit number for the indoor unitsapply to the system.

4. Confirm that the dip switch setting on the printed circuitboard of the indoor units and the outdoor units arecorrect. Especially, pay attention to setting of lift betweenindoor units and outdoor unit. Refer to the chapter “14.ELECTRICAL WIRING”.

5. Check to ensure that switch on the main power sourcehas been ON for more than 12 hours, to warm thecompressor oil by the oil heater.

6. Check whether or not the electrical wiring of the indoorunits and the outdoor units are connected as shown in thechapter “14. ELECTRICAL WIRING”.

7. Check to ensure that each wire, L1, L2, L3 and N iscorrectly connected at the power source.

Notes:�� &RQILUP�WKDW�ILHOG�VXSSOLHG�HOHFWULFDO�FRPSRQHQWV

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�� 8VH�VKLHOGHG�ZLUHV�IRU�ILHOG�ZLULQJ�WR�SURWHFW�QRLVHREVWDFOH��/HQJWK�RI�VKLHOGHG�ZLUH�VKDOO�EH�OHVVWKDQ��P��DQG�VL]H�RI�VKLHOGHG�ZLUH�VKDOOFRPSO\�ZLWK�ORFDO�FRGHV��

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TEST RUN

162

16.2.� TEST RUN PROCEDURE BY REMOTE CONTROL SWITCH

®Turn ON the power source of the Indoor and Outdoor Units

¯Set the TEST RUN mode by remote control switch.Depress the "MODE" and the "CHECK" switchessimultaneously for more than 3 seconds.

a) If "TEST RUN" and the counting number of theconnected units to the remote control switch (forexample "01") are indicated on the remote controlswitch, the connection of remote control cable iscorrect. Go to ±

b) If no indication or "00" appear or the number ofthe units indicated is smaller than the actualnumber of the units, some abnormalities exist.Go to °

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No indication

� The power source is not turned ON.� The connection of the remote control

cable is incorrect.� The connecting wires of power supply line

are incorrect or loosened.

1. Connection between the connector and the wires:Red wire-No. 1, Black wire-No. 2, White wire-No. 3

2. Connecting Points of Remote Control Cable3. Contact of Connectors of Remote Control Cable4. Connection Order of each Terminal Board5. Screw Fastening of each Terminal Boards.

Countingnumber ofconnectedunits isincorrect

� The setting of unit number is incorrect� The connection of control cables between

each indoor units are incorrect. (Whenone remote control switch controlsmultiple units)

6. Dip Switch Setting on Printed Circuit Board7. Wire Connecting Order of Bridge cable8. Connecting Points of Bridge Cable9. Contact of Connectors of Bridge Cable

°

Back to ® after checking

±Select TEST RUN MODE by depressing MODE Switch(COOL OR HEAT)

²Depress RUN/STOP switch.

a) The "TEST RUN" operation will be started. (The"TEST RUN" operation will be finished after 2hours unit operation or by depressing theRUN/STOP switch again).

b) IF the unit do not start or the operation lamp on theremote control switch is flickered, someabnormalities exist. Go to ³

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The operation lampflickers. (1 time/1sec.) And the UnitNo. and AlarmCode "03" flicker

The unit does not start.The connecting wires ofoperating line are incorrect orloosened.

1. Connecting Order of each TerminalBoards. The fuse on the PCB may beblown out due to miswiring. (Can berecovered only once by the DSW onthe PCB). (See�´�

2. Screw fastening of each TerminalBoards.

3. Connecting Order of Power LineBetween Indoor Units and OutdoorUnit.

The operation lampflickers.(1 time/2 sec.)

The unit does not start.The connection of remotecontrol cable is incorrect This is the same as item ° 1, 2, and 3

Indication of clickerdifferent to above

The unit does not start, or start onceand the stops

The connection of thermistoror other connectors areincorrect. Tripping ofprotector exists, or else.

Check by the alarm code table in theservice manual (Do it by service people).

The outdoor fans rotate reverselyThe connection order ofpower supply line is incorrect.

Connecting Order of the Terminal Board:TB1 in the Outdoor Unit

NormalThe outdoor fans do not start.

Some wires of power supplyline are disconnected.

Connecting Point of Power Supply Line.Contact Outdoor Fan Motor Connector.

³

Back to ® after checking

´Procedure for Recovery When Transmitting Circuit Fuse isBlown Out:1. Correct the wiring for the terminal board.2. Switch the 2nd pin of the DSW on the PCB to "ON"

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OFF

2XWGRRU�3&%�'6:��ON

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MODE

RUN/STOP

05Counting Number ofConnected Units

Operation Lamp

TEST RUN

163

16.3.� TEST RUN PROCEDURE BY WIRELESS REMOTE CONTROL SWITCH (PC-LH3)

1. Turn ON the power supply for the indoor and outdoorunits.

2. Set the batteries (x2, accessory) for the remote controlswitch

a. Remove the cover by drawing the cover toward thearrow direction with pushing the part as shown in theright figure

b. Set the batteries for the controller.Take care of the setting direction of + and - of thebattery.

3. Press the " | " and " " switch simultaneously formores than 3 seconds and set the remote control switchat the TEST RUN mode.

(Normal)The indication of "2.0Hr. " is indicated at the liquidcrystal display part of the controller.

(Abnormal)No indication is indicated and the TEST RUN mode isnot set.

4. Check items when Abnormal

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Can Not Set at TEST RUNMode

Malfunction of Wireless Remote Control Switch Perform the checking according to thechecking procedures for the wirelessremote control switch

No indication Batteries are old.

The setting direction (+ and -) of the batteries isincorrect.

Change the batteries with new ones.

Check the setting direction (+ and -) of thebatteries.

↑ ↑

TEST RUN

164

5. Press the " " switch and set at the "COOL" or"HEAT" mode

a. Operate the controller by facing the transmittertoward the receiver of the panel. When sending thecommands, the indication of " " turns ON for aninstant at the liquid crystal display part of thecontroller. When the commands are received by thereceiver of the indoor unit, the " " lamp (orange)of the receiver part turns ON for an instant.

b. Press the " " switch by facing the transmitterof the controller toward the receiver of the panel andset at the "COOL" or "HEAT" mode

6. Press the " " switch by facing the transmitter of thecontroller toward the receiver of the panel.

(Normal)The test running is finished after 2 hours or by pressingthe " " switch again.In case of setting the "OFF TIMER" during the testrunning, the test running is finished according to thetimer operation.

(Abnormal)The operation is not performed.The operation lamp (red) or the receiver lamp (orange)of the receiver part of the panel is flickered.

■ In case of using Air Panel for Wireless Control (PC-RLH3, PC-RLH4 or PC-RLH5)The unit No. With alarm occurrence, the alarm code andthe unit code are indicated at the 7-segment indicator ofthe receiver part as follows.Check the unit according to the Service Manual.

↓® A0 The unit No. With alarm occurrence is indicated (approx. 1 sec.)

↓¯

Turns OFF (approx. 1 sec.)

↓° 02 The alarm code is indicated (approx. 1 sec.)

↓±


↓² F1 The Outdoor Unit code is indicated (approx. 1 sec.)

↓³


The above indications from ® to ³ are indicated by theorder of the unit No. for the unit with alarm occurrence.

The indication of " "flickers

Press the " "switch and set theoperation mode.

Set the operation modeat "COOL" or "HEAT".Do not perform the testrunning at "DRY" and"AUTO" mode

The indication of " "flickers

Press the " " switchand the test running isstarted.

TEST RUN

165

16.4.� TEST RUN PROCEDURE BY REMOTE CONTROL SWITCH <CORE-FUNCTION> (PC-5H)

1. Turn ON the power supply for all the indoor units.

2. In case of the unit with the auto address function, wait for3 minutes approximately until the auto-addressing iscompleted.There could be the case that approx. 5 minutes isrequired for completion of auto-addressing according tothe setting conditions).

3. Press the " " and " " switches simultaneously for 3seconds and set at the "CHECK" mode.

The address connected is indicated at the 7 segment display(see figure below).The address is changed by pressing the " " and " "switch. Check the number of connected units by the addressindicated at the 7-segment display.In case of 5 units connectedPressing the " " and " " switch, the address is indicatedas A1, A2, A3, A4, A5, A1 ··· and this shows the 5 unitsconnected.When the incorrect number is indicated, the auto-addressdoes not perform correctly due to the connection failure orthe noise.In such a case, turn OFF the power supply, check thefollowing 4 points and connect the wiring correctly.(Do not repeat turning ON and OFF the power supply in ashort period (within 10 seconds)).

1. Power supply OFF for the indoor unit, or wiringconnection failure

2. Failure of cable connection between Indoor Units, orfailure of connection cable for Remote Controller.

3. Incorrect setting of Dip switches (setting isoverlapped)

4. Simultaneous control wiring for multiple Indoor Unitsconnected to different Outdoor Units

Note: There could be the case that the auto-addressing isperforming according to the setting conditions. After a while,set the "CHECK" mode again4. Press the " " and " " switches simultaneously tocancel the "CHECK" mode

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RUN/STOP

HIGH

TEMP

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1. The setting of the indoor unit No. And the unit No. Set bythe auto-address can not be checked by the remotecontrol switch.In case of setting the unit No., perform the settingaccording to the "Dip Switch Setting" of the indoor unit.

2. Install the cable for the remote control switch and cablebetween units with a distance more than 30 cm awayfrom the power line.In case of installing the cables within 30 cm from thepower line, insert the cables into the metal conduit tubeand ground the one end of the tube.If the above treatment is not performed, the control failuremay occur due to the noise.

3. The length of the cable for the remote control switch shallbe within 100 m in case of using the cable with 0,3 mm²thickness. When there is the cable between indoor units,the total length of the cable shall be within 200 mincluding the cable for the remote control switch. (In caseof using the cable with more than 0.75 mm² thickness, thetotal length of the cable can be extended up to 500 m).

4. When connecting the cable, match the color of the wiringand the connector No. As shown in the table below.When connecting cables, solder and insulate them.

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Color of Cable Red Black White

5. Check the hole for leading cables of the remote controlswitch case mainly, close the clearance of the hole andthe cables for prevention from entering of the insects andwater.

6. The remote control switch <core-function> (PC-5H) hasno function for setting operation mode. When the settingof the operation mode is not performed from othercontrollers, the operation mode is automatically set at the"AUTO" mode. However, the test running is performedfrom the outdoor unit , the operating mode at the testrunning is memorized.In such a case, perform the self-checking according to theprocedures in the Service Manual, and delete thememory (EEPROM).

■ The optional setting is available for the remote controlswitch <core-function> (PC-5H) with jumper wire.JP1 / with JP1: Main Controller, with JP1 cut: SubControllerJP2 / Not used,JP3 / with JP3: Auto-Louver, with JP3 cut: Fixing Louver(The setting from CS-NET is invalid)

A1

7-segmentdisplay

TEST RUN

166

n Test Run and Maintenance Record

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1. Is the rotating direction of the indoor coil fan correct? 2. Is the rotating direction of the outdoor coil fan correct?3. Are there any abnormal compressor sounds?4. Has the unit been operated at least twenty (20) minutes?5. Check Room Temperature:

Inlet: No.1 DB /WB °C , No.2 DB /WB °C , No.3 DB /WB °C , No.4 DB /WB °COutlet: DB /WB °C , DB /WB °C , DB /WB °C , DB /WB °CInlet: No.5 DB /WB °C , No.6 DB /WB °C , No.7 DB /WB °C , No.8 DB /WB °COutlet: DB /WB °C , DB /WB °C , DB /WB °C , DB /WB °C

6. Check Outdoor Ambient Temperature:Inlet: DB °C , WB °COutlet: DB °C , WB °C

7. Check Refrigerant Temperature: Operating Mode (Cool or Heat)Discharge Gas Temperature: Td= °CLiquid Pipe Temperature: Te= °C

8. Check Pressure:Discharge Pressure: Pd= kg/cm2GSuction Pressure: Ps= kg/cm2G

9. Check Voltage:Rated Voltage: VOperating Voltage: L1-L2 V, L1-L3 V, L2-L3 VStarting Voltage: V

VPhase Imbalance: 1– ———— =

Vm10. Check Compressor Input Running Current

Input: kWRunning Current: A

11. Is the refrigerant charge adequate?12. Do the operation control devices operate correctly?13. Do the safety devices operate correctly?14. Has the unit been checked for refrigerant leakage?15. Is the unit clean inside and outside?16. Are all cabinet panels fixed?17. Are all cabinet panels free from rattles?18. Is the filter clean?19. Is the heat exchanger clean?20. Are the stop valves open?21. Does the drain water flow smoothly from the drain pipe?

Note:Alarm code list is available in chapter 17, page 2

TEST RUN

167

16.5.� TEST RUN FROM OUTDOOR UNIT SIDE

The procedure of test run from outdoor unit side isindicated below. Setting of this DIP switch is available withthe power source ON.

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WARNING:- Do not touch any other electrical parts when

operating switches on the PCB.- Do not attach or detach service cover when the

power source for the outdoor unit is ON and theoutdoor unit is operated.

- Turn all DIP switches of DSW4 OFF when the testrun operation is completed.

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Switch for Setting of Service Operation and Function

OFF

ON

1. Test Run2. COOL/HEAT Setting

(ON: Heating Operation)3. OFF (Fixed)4. Manual Compressor OFF5. OFF (Fixed)6. OFF (Fixed)

Outdoor Unit Printed Circuit Board (PWB1)

OFF

ON

DWS4

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Test Run ® Setting of Operation ModeCooling: Set DSW4-2 OFF.

OFF

ON

Heating: Set DSW4-2 ON.

OFF

ON

¯ Starting Test RunSet DSW4-1 ON and the operation isstarted after a few ~20 seconds.

When heating operation, leaveDSW4-2 at ON ↓

OFF

ON

® The indoor unit automatically start tooperate when the test run of the outdoorunit is set.

¯ The ON/OFF operation can be performedfrom the remote control switch or DSW4-1of the outdoor unit.

° Continuous operation during 2 hours isperformed without Thermo-OFF.

� Take care that the indoor units startoperation in accord with the test runoperation of the outdoor unit.

� The test run is started from the outdoor unitand stopped from the remote controlswitch, the test run function of the remotecontrol switch is cancelled. However, thetest run function of the outdoor unit is notcancelled

� In case that the plural indoor units areconnected with one remote control switch,all the units start test run operation at thesame time, therefore, turn the powersource OFF for the indoor units not tooperate test run.In this case, the “TSET RUN” indication ofthe remote control switch may flicker, andthis is not abnormal.

� The setting of DSW4 is not required for thetest run from the remote control switch.

Manual OFFof

Compressor

® Setting- Compressor Manual

OFF: Set DSW4-4 ON.

OFF

ON

- Compressor ON:Set DSW4-4 OFF.

OFF

ON

® When DSW4-4 is ON during compressoroperation, the compressor stops to operateimmediately and the indoor unit is underthe condition of Thermo-OFF.

¯ When DSW4-4 is OFF, the compressorstarts to operate after the cancellation of 3-minutes guard.

� Do not repeat compressor ON/OFFfrequently.

ManualDefrost

® Manual Defrost Operation StartsPress PSW1 for more than 3 secondsduring heating operation, the defrostoperation is started after 2 minutes.This function is not available within 5minutes after starting heating operation

¯ Manual Defrost Operation FinishesDefrost operation is automatically endedand the heating operation is started.

® Defrost operation is available regardless offrosting condition and total time of heatingoperation.

¯ Defrost operation in not performed whenthe temperature of outdoor heat exchangeris higher than 10°C, high pressure ishigher than 2.0MPa (20kgf/cm2G) orThermo-OFF.

� Do not repeat defrost operation frequently.� When manual defrost operation is accepted

by PSW1, the time left before startingdefrost operation is indicated at the 7-segment indicator on the PCB.

d 2 0Time left (every 4 seconds)

For Service

TEST RUN

168

n FXG series

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� All units in Cooling Operation

Dis

char

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ress

ure

(MP

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Suc

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Pre

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Indoor Unit Inlet Temp. (WB °C)

� All units in Heating Operation

Dis

char

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ress

ure

(MP

a)

Suc

tion

Pre

ssur

e (M

Pa)

Outdoor Unit Inlet Temp. (WB °C)

Normal Operating Pressure

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Dis

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Suc

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Pre

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� All units in Heating Operation

Dis

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ress

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Suc

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Pre

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Outdoor Unit Inlet Temp. (WB °C)

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�� 'R�QRW�XVH�WKH�DERYH�GDWD�IRU�WKH�UHIULJHUDQWFKDUJH�SURFHGXUH�7KHVH�GDWD�VKRXOG�EH�XVHG�DV�D�UHIHUHQFH�IRU�WKHFKHFNLQJ�RI�RSHUDWLQJ�FRQGLWLRQV�

Outdoor Unit Inlet Temp. (DB °C)

Outdoor Unit Inlet Temp. (DB °C)

Outdoor Unit Inlet Temp. (DB °C)Outdoor Unit Inlet Temp. (DB °C)

Indoor Unit Inlet Temp. (DB °C)

Indoor Unit Inlet Temp. (DB °C)

Indoor Unit Inlet Temp. (DB °C)Indoor Unit Inlet Temp. (DB °C)

TEST RUN

169

16.6.� CHECKING OF THE REFRIGERANT QUANTITY FOR FX SERIES

An excess or deficiency of the refrigerant can be checked by using data from 7-segments display check mode. This checkingprocedure, as follows, is useful at test run or maintenance.

n Before Checking:

1. Operate all the indoor units at the “TEST RUN” mode and operate all the indoor units at the “HIGH” speed.2. Check the following items to ensure that the refrigeration cycle is stable.

1) The continuous operation is for more than 20 min.2) TdSH is 20 to 40 K. [TdSH: Discharge Gas Temperature Superheat]3) Ps is 0.2 to 0.5 MPa. [Ps: Suction Pressure]4) Pd is 1.4 to 2.4 MPa. [Pd: Discharge Pressure]

3. Collect the checking data by the 7-segment display check mode. Refer to Table on page 11.

4. Perform checking as the following procedures.Applicable Operating Conditions of Air Temperature for Checking

[Cooling] Room Air Temperature: 20~30 °COutdoor Air Temperature: 15~40 °C

[Heating] Room Air Temperature: 20~30 °COutdoor Air Temperature: 0~15 °C

n Checking Procedures:

Cooling Operation

1. Detect oEb (Outdoor Unit Bypass Expansion Valve Opening).2. Compare oEb with the normal value

� Normal Value: Outdoor Unit Capacity (HP) X 0.5 to Outdoor Unit Capacity (HP) X 2� Tendency: In the case that the room air temperature is high within the above normal value,

the value of oEb will be big.� Judgement: oEb > Normal Value

··· This means insufficient refrigerationoEb < Normal Value··· This means excessive refrigerant.

Heating Operation

1. Detect oE1 and oE2 (Outdoor Unit Expansion Valve Opening).2. Sum up the values of oE1 and oE23. Compare the sum of oE1 and oE2 with the normal value.

� Normal Value: 30 to 60� Tendency: When oE1 and oE2 is within the above range and

1) In the case that the room air temperature is high, the value of (oE1 + oE2) will be small.2) In the case that the outdoor air temperature is high, the value of (oE1 + oE2) will be big.

� Judgement: (oE1 + oE2) > Normal Value···This means insufficient refrigerant.(oE1 + oE2) < Normal Value··· This means excessive refrigerant.

n Cases where this method is not applicable

This checking method is not applicable under such conditions as indicated below.In such cases, remove the causes of the conditions before checking.

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1 Short-circuited Air at Indoor Unit Tends to be Excessively Open –

2 Short-circuited Air at Outdoor Unit Tends to be Excessively Open Tends to be Excessively Closed

3Resistance of Connecting Pipe is Big(Due to smashed pipe or small liquid pipe) Tends to be Excessively Open Tends to be Excessively Open

Locked (Fully Open) Tends to be Excessively Closed –4

Indoor UnitExpansion Valve Failure Locked (Fully Close) Tends to be Excessively Open –

Locked (Fully Open) – Tends to be Excessively Closed5

Outdoor UnitExpansion Valve Failure Locked (Fully Close) Tends to be Excessively Open Tends to be Excessively Open

TEST RUN

1610

n Standard Value of Outdoor Expansion Valve Opening in Heating Operation

1) This curves should be used by referring to the data during the CHECK mode.

2) In the case that data by the CHECK mode operation is within ±15%, the refrigerant charging amount is appropiate.

Remarks:In the case of cooling operation, the curves of "Expansion Valve Opening" for the bypass outdoor expansion Valve is notavailable due to the following reasons:

a) The range of the bypass-outdoor unit valve opening is wide due to balancing control of indoor expansion valves evenif TdSH is the same.

b) The bypass outdoor expansion valve opening is slightly changed depending on the total indoor unit quantity andcapacity to be connected.

c) The bypass outdoor expansion valve opening is slightly changed depending on the piping length.

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Tem

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DB

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Am

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Tem

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Indoor Unit Inlet Temp. (DB °C) Indoor Unit Inlet Temp. (DB °C)

TEST RUN

1611

Outdoor Unit Model (Serial No. ) RAS- (Serial No. ) RAS- (Serial No. )

(1) Operation Mode

(2) Test Run Start Time

(3) Data Collect Start Time

(4) Read Out Data from 7-Segment in Outdoor Unit

Protection Control Code52C1 52C2 52C3 52C4 AC Chopper 52C1 52C2 52C3 52C4 AC Chopper

FAN2 RS 20A 211 212 OH FAN2 RS 20A 211 212 OHOutdoor Microcomputer Output SC

Indoor Total Operating Capacity oP

Inverter Frequency H1

Compressor Running Quantity CC

Air Flow Ratio Fo

oE1

oE2Outdoor Unit Expansion Valve Opening

oEb

Discharge Pressure Pd

Suction Pressure Ps

Td1

Td2

Td3Discharge Gas Temperature

Td4

TE1Heat Exchanger Liquid Pipe Temperature

TE2

Outdoor Temperature To

A1

A2

A3Compressor Running Current

A4

Indoor Unit

Expansion Valve Opening iE

Heat Exchanger Liquid Temp TL

Heat Exchanger Gas Temp TG

Intake Air Temp Ti

Outlet Air Temp To

Capacity (X 1/8HP) CA

Indoor Unit Stoppage Cause Code d1

Restricted Control for Prevention ofCompression Ratio Decrease

c11

Restricted Control for Prevention ofHigh Pressure Increase

c13

Restricted Control for Prevention ofDischarge Gas Temp. Increase

c15

Restricted Control for Prevention ofTdSH Decrease

c16

Restricted Control for Prevention ofOvercurrent

c17

Accumulated Operation Time of Comp. 1 UJ1




Outdoor Alarm Code AC

Inverter Stoppage Cause Code iTC

Total Indoor Unit Capacity (X 1/8HP) CP

Total Indoor Unit Quantity AA

Refrigerant System Address GA

TROUBLESHOOTING

17�

17.� TROUBLESHOOTING

17.1.� INITIAL TROUBLESHOOTING

17.1.1.� THIS IS NOT ABNORMAL

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17.1.2.� NOT COOLING OR HEATING WELL

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17.1.3.� NOT OPERATE

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TROUBLESHOOTING

17��

17.6.� SELF CHECKING OF PCB’S USING REMOTE CONTROL SWITCH

17.7.� SELF CHECKING REMOTE CONTROL SWITCH

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��MAINTENANCE 1

18.� MAINTENANCE

18.1.� REGULAR INSPECTION

18.2.� FILTER CLEANING

All data related to Maintenance for FXGSeries are the same as for FSG Series.Please refer to Technical Catalogue forFSG

��MISCELLANEOUS NOTES 1

19.� MISCELLANEOUS NOTES

19.1.� SPECIAL NOTES

1 Provide a service access door near the unit pipingconnection part on the false ceiling for the cassette typeunits.

2 Consider the air distribution from the unit to the space ofthe room, and select a suitable location so that uniform airtemperature in the room can be obtained. Cassette andCeiling Types - Avoid unit installation in a room where theceiling height (distance between the floor to the falseceiling) exceeds three meters. If the indoor unit isinstalled in a room with a ceiling of higher than 3 meters,it is recommended that an air circulation fan be installedseparately to obtain uniform air temperature in the room,especially during the heating operation.

3 Check to ensure that the ceiling slab is strong enoughand that the false ceiling is flat and level.

4 Avoid obstacles which may restrict the air intake or thedischarge flow.

5 Do not install the unit in a machinery shop or kitchenwhere vapor from oil or its mist can enter to the unit. Theoil will deposit on the heat exchanger, thereby reducingthe unit performance, and may deform, in the worst case,break the plastic parts of the unit.

6 Pay attention to the following points when the unit isinstalled in a hospital or other facilities whereelectromagnetic wave is radiated from medicalequipment.

(A) Do not install the unit where the electromagneticwave is directly radiated to the electrical box, remotecontrol cable or remote control switch.

(B) Install the unit and component as far as practical (atleast three meters) from the electromagnetic waveradiator.

(C) Prepare a steel box and install the remote controlswitch in it. Prepare a steel conduit pipe and wirethe remote control cable in it. Then, connect earthwire with the box and the pipe.

(D) Install a noise filter when the power supply emitsharmful noise.

7 Do not install the units in an acid or alkaline environmentdue to the corrosive action on the heat exchanger. In thecase that outdoor units are installed near the sea, it isrecommended that optional corrosion - resistant typeoutdoor unit be used.

8 Do not install the units in an flammable environment dueto the danger of an explosion.

9 Regarding cassette type indoor units, consider the directand reflected sound level, when selecting the unit forspaces where extremely low sound is required.

10 During heating operation, the outdoor heat exchangerproduces condensate dew or melting water from frost.Install the outdoor unit where drainage of such water isconvenient, or provide a drain passage.

11 Heating Performance: The heating capacity normallydecreases when outdoor temperatures decrease.Therefore, provide an auxiliary heating unit if outdoortemperatures are very low.

12 In the case that an outdoor temperature is low andhumidity is high, the outdoor heat exchanger will coveredwith frost, resulting in lower heating capacity. In order toremove the frost, the unit is automatically changed to thedefrosting mode. During this defrosting operation, the unitis stopped for approximately 3 to 10 minutes.

13 As this unit is of heat pump type by circulating hot air inthe whole room space, it takes time to heat up the roomtemperature.

14 The operating sound data is based on an anechoicchamber. Therefore, the actual operating sound will behigher due to reflected sound from the floor and wall.

15 In the case that the unit is operated for a long time higherthan the indoor temperature of 27°C DB or the humidity of80%, dewing may occur on the cabinets resulting in dewdrops. If dewing, it is required to add thermal insulator onthe cabinets.

16 Provide snow-protection hoods to prevent the outdoorheat exchanger from snow clogging. If the unit isoperated in an are where it snows heavily, provide a baseunder the outdoor unit which should be 50 cm higher thanthe presumable maximum snow height.

17 It is recommended that periodical service andmaintenance be performed by authorized serviceengineers before air conditioning seasons, in order toavoid performance decrease due to dust or dirt.

18 This heat pump air conditioner has been designed fornormal air conditioning for men. Do not apply otherpurposes such as for food, animals, plants, high precisionmachines or work of art. Also do not apply to vehicles orvessels. It will results in water leakage or electricalleakage.

19 It is recommended that the system be installed byauthorized engineers. If not, it may cause water leakage,electric shock or fire.

20 In a place where fibers or dust are floating, the air filter orheat exchangers or the drain pipe may be clogged,resulting in water leakage from the drain pan.

21 Do not operate this unit with other cooling/heatingequipment at the same time.Select Indoor Units with the adequate capacity accordingto the cooling/heating load of the room. If not, thermoON/OFF may occur frequently and the lifetime of the unitmay be shortened.

��2 MISCELLANEOUS NOTES

19.2.� ATTENTION FOR SET-FREE FXG SERIES

The SET-FREE FXG series has been designed for thesystem to provide simultaneous cooling and heatingoperations during intermediate seasons and the refrigerantcycle is controlled according to heat balance of cooling andheating. Therefore, pay attention to the followings for theselection of installing sites and the installation work.As especially, this SET-FREE FXG series is operated bymixed refrigerant R407C, special attention is required.Follow the items below.

� The SET-FREE FXG series is for general office buildingair conditioning. Therefore, it is recommended thatdifferent air conditioning systems be selected in a placewhere systems are utilized for (I) machine rooms orcomputer rooms, providing big heat load and (II)thermostatic chamber, requiring precise temperaturecontrol.

� By operating this unit with other cooling/heatingequipment at the same time, thermo-ON/OFF mayoccur frequently or the heat load change may be big,and it may cause the decrease of the unit performanceor shorten the lifetime of the unit. Do not install the unitin a place where operation with other cooling/heatingequipment is required.

n Attention for System Design of FXG Series

1 Installing Site:Do not install the unit in such places;� Where temperature difference among rooms is

excessively big and the heat load when cooling andheating is excessively big during simultaneousCOOL/HEAT operation. Where the heat load change ofa room is big and thermo-ON/OFF may occur frequentlyespecially during simultaneous COOL/HEAT operation.

� Where temporary capacity decrease according toON/OFF operation of other rooms is not allowed.

� Where starting up in simultaneous COOL/HEAToperation mode is always required.

2 Piping Work:Do not perform the piping work as follows;� The piping length between the the farthest indoor unit

and the last multi-kit is excessively long (see Chapter12).

� The CH units are used individually for each indoor unitin a same room.

� There is a height difference between CH units.Refer to the followings for the attention in detail. (Observe theattentions common to FSG series.)

n Attention for Simultaneous COOL/HEAT Operation

1 Capacity of Simultaneous COOL/HEAT Operation:>3KHQRPHQRQ@During the simultaneous cooling and heating operation,the capacity comparatively decreases when comparedwith the capacity whilst operating all the indoor units atthe same mode.The capacity decrease mentioned above should be takeninto consideration when in actual operation, especially forthe small capacity units (0.8 ∼ 1.5 HP).

&RROLQJ

Hea

ting

Cap

acity

(%

)

Outdoor Air Temperature (°C DB)

+HDWLQJH

eatin

g C

apac

ity (

%)

Outdoor Air Temperature (°C DB)

>&RXQWHUPHDVXUH@Perform the heat load calculation with the decreasedcapacity as shown in the graph of the next page.Do not install the unit in such a place where temperaturedifference among rooms is big and the heat load whencooling and heating is excessively big duringsimultaneous COOL/HEAT operation.

2 Influence by ON/OFF Operation of Other Rooms:>3KHQRPHQRQ@During the simultaneous cooling and heating operation,the actual capacity of the indoor units in operation isdecreased for a short time due to the influence of heatbalance when the cooling or heating operation whensome other indoor units is started or stopped, or thermo-ON/QFF.>&RXQWHUPHDVXUH@The following conditions and the system as shown beloware not appropriate for FXG series, since other indoorunits may be influenced by the indoor unit. Therefore, it isrecommended that different air conditioning systems beselected.

All Indoor Units in Cooling Operation/ Mainly Cooling operation

Mainly Heating operation

All Indoor Units in Heating Operation/ Mainly Heating operation

Mainly Cooling operation


� There is a room where the heat load change is big andON/OFF operation of indoor unit is excessivelyfrequent.

� Where capacity decrease for a short time according toON/OFF operation of other rooms is not allowed.However, this system can be applied to a room wheregradual heat load change is given, such as a heatingoperation in the morning, cooling operation duringdaytime and heating operation in the evening.

>([DPSOH@In case that the mainly cooling operation is changed tothe mainly heating operation especially when the bigcapacity Indoor Unit (ex: 5HP) is stopped at coolingoperation or thermo-OFF, the outdoor heat exchanger ischanged from condenser to evaporator functions and thecooling capacity of other Indoor Units in continuouscooling operation is excessively decreased.

Cap

acity

100

%C

apac

ity 1

00%

3 Piping Length of Farthest Indoor Unit:

>3KHQRPHQRQ@During the simultaneous cooling and heating (especiallyin mainly heating operation), the cooling capacity of thefarthest indoor unit is decreased when the farthest Indoorunit is in cooling operation and the second farthest indoorunit is in heating operation.

>&RXQWHUPHDVXUH@It is recommended that the piping length between themulti-kit and the farthest Indoor Unit be within 5m.In case that the piping length between the multi-kit andthe farthest Indoor unit is longer than 5m, use the gas andliquid pipes with a bigger size. (In case that the size-up ofthe gas pipe is not available, only the size-up of the liquidpipe is available. However, in such a case, the capacity isrecovered half.)

/LTXLG�3LSLQJ��8QLW

*DV�3LSLQJ�/RZ��+LJK�3UHVVXUH�� 6WDQGDUG /RQJHU�SLSLQJ

8 HP 22.2 or 25.4 / 19.05 12.7 (Fig. 2) 12.7 (Fig. 2)

10 HP 28.6 / 19.05 12.7 (Fig. 1) 15.88 (Fig. 2)

1RUPDO�6L]H��∅� %LJJHU�6L]H��∅�,QGRRU�XQLW&DSDFLW\��+3� *DV /LTXLG *DV /LTXLG

0.8 ∼ 1.5 12.7 6.35 15.88 12.72.0 ~ 2.3 15.88 6.35 19.05 12.7

2.5 and 3.0 15.88 9.53 - -4.0 and 5.0 19.05 9.53 - -

10HP Outdoor Unit

CH Unit

5HPCoolingON/OFF

3HPHeating

(Continuous)

1HPCooling

(Continuous)

Indoor Unit

MainlyCooling

MainlyHeating

ON OFF ON OFF ON

5HP Cooling UnitThermo ON/OFF

1HP Cooling UnitContinuous operation

80%

Approx.10 min

Outdoor Unit

CH Unit

Indoor Unit

Heating Cooling

Max. 5mMax. 30m

��4 MISCELLANEOUS NOTES

4 Start-Up in Simultaneous COOL/HEAT Operation Mode:

>3KHQRPHQRQ@In case of starting up in the simultaneous COOL/HEAToperation mode when the outdoor temperature is low, thecapacity increase time of the unit operation is longer incomparison with the only cooling or heating operationmode (especially in starting up of small capacityoperation; 1HP cooling and 1HP heating [Example]).

>&RXQWHUPHDVXUH@Do not install the unit where starting up in simultaneousCOOL/HEAT operation mode is always required.In case that the simultaneous COOL/HEAT operation isrequired, It is recommended that individual refrigerantsystems be applied for cooling and heating, or the startingup is performed in only cooling or heating operationmode, and change over the operation mode to thesimultaneous COOL/HEAT mode when 10∼20 minuteshave passed after starting up operation.

>([DPSOH@In case of Start-Up in Simultaneous COOL/HEATOperation Mode

In case of Start-Up in Cooling operation Mode (andChangeover to simultaneous COOL/HEAT OperationMode Afterward)

n Attention for Automatic COOL/HEAT Operation

In case that the Indoor Units are operated and automaticcooling/heating operation by pressing the AUTO cool/heatSWITCH, PAY ATTENTION to the followings.

1 Interference of Cooling Unit and Heating Unit[Phenomenon]In the case that more than 2 indoor Units are closelyinstalled and operated in the same room, each indoorUnit interferes with the next unit, resulting in inefficientoperation.[Countermeasure]Do not use CH units individually for each indoor Units in asame room.In such case, connect the Indoor Units in a same room toone CH unit and operate indoor units in the sameoperation mode, if it is possible.

2 Fan Operation When Changing Cooling/HeatingOperation Mode

>3KHQRPHQRQ@In the case that room temperature rapidly increasesduring this automatic COOL/HEAT operation, theoperation mode is changed in order,Heating operation→Fan Operation→Cooling Operation.During this mode change, the fan operation continues formore than 10 minutes in order to avoid unwantedinfluences to other Indoor Units.

>&RXQWHUPHDVXUH@It is recommended that other systems be considered ifvery precise temperature control is required.

ON

Cooling

HeatingCap

acity

ON

Cooling

Heating

Cap

acity

10∼20 min

HeatingCooling

Outdoor Unit Outdoor Unit

CH Unit

CH Unit


n Attention for Installing CH Unit

Before Installing the CH Units, pay attention to the serviceaccess and sound

1 The CH Unit consists of mechanical components such assolenoid valves in order to change the operation modefrom cooling to heating or heating to cooling respectively.Therefore, please provide a service access door(minimum of 600 × 600mm) beneath the CH Unit.

2 Flowing sound of refrigerant may be heard from the CHUnit when the solenoid valve in the CH unit is activated.Therefore, take the following action to minimize thesound.� Install the CH unit inside the ceiling.

As for the ceiling material, select a material like aplaster board which minimizes operation sound.

� do not install the CH units in near a bed room orhospital room.

3 Install the CH units at the same level in the same floor.(No height difference between CH units is permitted.)

- Correct:

- Correct:

- Incorrect:

- Incorrect:

� CH Units ®¯° are installed in the same floor. (Noheight difference)

� The Piping length between the 1st multi-kit and thefarthest Indoor Unit is within 30m.

� The total piping length between each multi-kit and eachIndoor Unit is within 30m.

� The maximum lift among Indoor Units is within 15m.� The maximum lift between the Outdoor Unit and the

Indoor Unit is within 50m (in the case that the position ofthe position of the Outdoor Unit is higher than theIndoor Unit) / 40m (In the case that the position of theOutdoor unit is lower than that of the Indoor Unit)

�&$87,21�,Q�WKH�FDVH�WKDW�&+�8QLWV�®¯° are not installed in thesame floor (with a big height difference), the highpressure gas could not flow into the Indoor Unit and thewarm air may not discharged when in heating operation.

H2: Max. 4m

Indoor Unit

Max. 30m

H2:

Max

. 15m

H1:

Max

. 50m

(In

case

of O

utdo

or U

nit I

nsta

lled

Hig

h th

an In

door

Uni

t)

Max

. 40m

(In

case

of O

utdo

or U

nit I

nsta

lled

Low

er T

han

Indo

or U

nit)

CHUnit

Max. 30m

L: Max. 100m (Actual)

Max. 125m (Equivalent)

Outdoor Unit

L: Max. 100m (Actual)

Max. 125m (Equivalent)

Max. 30m

CH Unit

Outdoor Unit

Indoor UnitH2:

Max

. 15m H

1: M

ax. 1

5m(I

n ca

se o

f out

door

Uni

t Ins

talle

dH

igh

than

Indo

or U

nit)

Max

. 40m

(In

case

of O

utdo

or U

nit I

nsta

lled

Low

er T

han

Indo

or U

nit)

Indoor Unit

CH Unit

Height differencebetween CH Units

Outdoor Unit

Height Differencebetween CH Units

Outdoor Units

CH Units

Indoor Units

��STANDARD SPECIFICATIONS 1

20.� STANDARD SPECIFICATIONS81,7�� The unit shall be a multi-split system inverter-drivenheat pump air conditioner for application with R407Crefrigerant, and shall be composed of 4-way cassette typeindoor units, or in-the-ceiling type indoor units, 2-waycassette type indoor units, ceiling type indoor units, wall typeindoor units, floor type indoor units and an outdoor unit, witha distributed refrigeration cycle, electrical components andenclosing cabinets. Optional accessories shall also beprovided upon customer request. The indoor unit shall becompletely weather-proofed for outdoor installation. Bothindoor unit and the outdoor unit shall be properly assembled,internally piped and wired, thoroughly tested, and chargedwith R407C refrigerant at the factory and shall comply withJapanese standardization statues.

&$3$&,7<�� The total capacity of the multi-split systeminverter-driven heat pump air conditioner shall be_____kcal/h or greater with _____ °C air inlet dry bulb,_____°C air inlet wet bulb, _____ °C outdoor air inlettemperature and _____ m³/m. indoor air flow. The totalcompressor power inputs shall not exceed _____ kW. Thetotal heating capacity of the split-type air conditioners shallbe _____ kcal/h or greater, with _____ °C indoor heatexchanger inlet air dry bulb, _____ °C outdoor heatexchanger air inlet dry bulb, _____ °C outdoor heatexchanger air inlet wet bulb, and _____ m³/min indoor airflow.The total compressor power input shall not exceed _____kW.

,1'225�81,7

&$%,1(7��The cabinet shall be constructed of galvanizedsteel sheet or finished steel sheet, baked with synthetic resin-paint, with a plastic air panel assembly for cassette type unit,and be constructed of galvanized steel sheet for the in-the-ceiling duct type unit.

5()5,*(5$7,21�&<&/(��The refrigeration cycle shall beequipped with a heat exchanger, an electronic expansionvalve, solenoid valves and flare connections.

,1'225�)$1�$1'�)$1�02725��The indoor fan shall bethe multi-blade centrifugal type, statically and dynamicallybalanced, and directly driven by a _____ W motor for model,_____ and a _____ W motor for model _____ . The fan motorbearing shall be permanently lubricated. The fan shall deliver_____ m³/min air flow for model _____ and _____ m³/min formodel _____ at the nominal air flow. Three operatingpositions Hi, Me and Lo can be selected according to therequired conditions.

,1'225�+($7�(;&+$1*(5��The heat exchanger shall bethe multi-pass, cross-finned tube type. equipped with highly-efficient aluminum fins, mechanically bonded to seamless,oxygen-free copper tubes. The fins shall be spaced at nomore than 12 fins per 25.4mm. The face area shall not beless than _____ m² for model _____ and _____ m² for model_____ . The coil shall be cleaned, dehydrated and tested forleakage at the factory.

287'225�81,7

&$%,1(7��The cabinet shall be constructed of galvanizedsteel sheet, baked with synthetic resin-paint, The servicepanel shall be easily removable for service access to theelectrical components and the compressor section.

5()5,*(5$7,21�&<&/(��Each refrigeration cycle shall beequipped with (a) scroll compressor (s), a solenoid valve, aheat exchanger, an accumulator, a 4-Way valve and flareconnection parts.

&2035(6625�3527(&7,21��The compressor shall beprotected against breakdown by a quick responseovercurrent relay, a high pressure switch, a wrap-around typeoil heater and a discharge gas thermistor.

287'225�)$1�$1'�)$1�02725��The outdoor fan(s)shall be the plastic propeller type, dynamically balanced, andthe fan shall be directly driven by a _____ W motor forvertical-flow air discharge. The fan motor shall bepermanently lubricated and be protected from ingress ofwater.

287'225�+($7�(;&+$1*(5��The�heat exchanger shallbe the multi-pass, cross-finned tube type, equipped withhighly-efficient aluminum fins, mechanically bonded tooxygen-free copper tubes. The coil shall be cleaned,dehydrated and tested for leakage at the factory.

&21752/��All electrical control devices , shall be enclosedin the indoor and outdoor units.

In addition to the compressor protection devices , the indoorfan motor shall be equipped with an internal thermostat. Theoutdoor fan motor shall be protected by an internalthermostat. The indoor fan motor shall be directly suppliedwith the power source from the control circuit. The functionsof these control devices shall compose an electricalsequence of manual starting and stopping, automaticcontinuous operation whenever the room thermostatrequires, and the protection devices allow the operation.

&$%,1(7��The cabinet shall be constructed of galvanizedsteel sheet.

5()5,*(5$7,21�&<&/(��The refrigeration cycle shall beequipped with solenoid valves and flare connections tochangeover the cycle in mediating between outdoor unit andindoor unit

TCGB0016 - 07/01 - Printed in Spain

set-free fxg - documentatie.hdkl.nldocumentatie.hdkl.nl/vrf_utopia_ivx/ou/fsg fsg1 fs3 fs5 fxg...

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