samurai series air cooled water chillers -screw type...
TRANSCRIPT
Installation, operation andmaintenance instructions.Design information.
RCUE180~450AG2B
Technical Catalogue
SAMURAI SERIES
AIR COOLED WATER CHILLERS
-SCREW TYPE-
AG2B
Specifications in this manual are subject to change without notice in order that HITACHI may bring the latest innovations to their customers.
Whilst every effort is made to ensure that all specifications are correct, printing errors are beyond Hitachi’s control; Hitachi cannot be held responsible for these errors.
Contents
Technical Catalogue
5TCGB0054 rev.0 - 08/2010
Important Notice
Features and Benefits
Operation Instructions
Name of parts
Preparation Initial Check
Installation
Test Running
Controler Adjustment
Self-Inspection Functions
Control System
Maintenance
Troubleshooting
General Specifications
Drawings
Model Selection
Application Data
Components Data
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Contents
TCGB0054 rev.0 - 08/2010
Technical Catalogue
Contents
1. Important Notice ............................................................................................................... 11
2. Features and Benefits ......................................................................................................132.1. Unit picture .............................................................................................................................................. 14
2.2. Control ..................................................................................................................................................... 15
2.3. LCD Control Panel ................................................................................................................................... 16
2.4. Compressor ............................................................................................................................................. 16
2.5. Fan motor ................................................................................................................................................ 19
2.6. Electronic expansion valve ...................................................................................................................... 19
3. Operation Instructiions......................................................................................................213.1. Hitachi Air-Cooled Water Chillers ............................................................................................................ 22
4. Name or Parts ..................................................................................................................234.1. Structure drawing .................................................................................................................................... 24
5. Preparation Inital Check ...................................................................................................275.1. Initial check .............................................................................................................................................. 28
5.2. Placing The Unit ...................................................................................................................................... 29
5.3. Gravity centre .......................................................................................................................................... 30
5.4. Service Space and Foundation ............................................................................................................... 31
5.5. Transportation .......................................................................................................................................... 33
6. Installation ........................................................................................................................376.1 Handle installation .................................................................................................................................... 38
6.2. Electrical Wiring ....................................................................................................................................... 38
6.3 Water piping .............................................................................................................................................. 42
6.4. Typical common water piping .................................................................................................................. 43
6.5. Minimum internal system water volume .................................................................................................. 44
6.6. Water control ........................................................................................................................................... 44
6.7. BMS gateways ......................................................................................................................................... 45
6.8. Remote controllers .................................................................................................................................. 51
7. Test Running .....................................................................................................................577.1. Preparation .............................................................................................................................................. 58
7.2. Test Running ............................................................................................................................................ 58
7.3. Instructions After Test Running ................................................................................................................ 58
8. Controller adjustment .......................................................................................................598.1. Control System ........................................................................................................................................ 60
8.2. Control Adjustment .................................................................................................................................. 69
TCGB0054 rev.0 - 08/20108
Contents
Technical Catalogue
Contents (Cont.)
9. Self-Inspection functions ..................................................................................................799.1. Alarm Screen ........................................................................................................................................... 80
9.2. Alarm Indication ....................................................................................................................................... 80
9.3. Normal Indication ..................................................................................................................................... 82
9.4. Function for indication of operation condition .......................................................................................... 82
10. Control System ...............................................................................................................8310.1. Standard operation sequence RCUE180, 210, 240AG2B ..................................................................... 84
10.2. Standard operation sequence RCUE280, 320, 350, 400, 450AG2B ..................................................... 85
11. Maintenance ...................................................................................................................8711.1. Components........................................................................................................................................... 88
11.2. Lubrication ............................................................................................................................................. 88
11.3. Deposit ................................................................................................................................................... 88
11.4. Cleaning Method .................................................................................................................................... 89
11.5. Winter Shutdown.................................................................................................................................... 91
11.6. Spring Start-Up ...................................................................................................................................... 91
11.7. Part Replacement .................................................................................................................................. 91
11.8. Refrigeration Cycle ................................................................................................................................ 91
11.9. Refrigerant Cycle Diagram of Hitachi Air-Cooled Water Chiller (RCUE210, 280, 320, 400AG2B) ........................................................................................................ 92
11.10.Refrigerant Cycle Diagram of Hitachi Air-Cooled Water Chiller (RCUE180, 240, 350, 450AG2B) with ECONOMIZER. ........................................................................ 93
11.11. Compressor Removal .......................................................................................................................... 94
11.12. Safety and protection control ............................................................................................................... 95
11.13. Normal Operating Pressure ................................................................................................................. 96
11.14. Test Running And Maintenance Record ............................................................................................... 97
11.15. Daily Operating Records ...................................................................................................................... 98
11.16. Servicing for R407C Refrigerant System ............................................................................................. 99
12. Troubleshooting ............................................................................................................10112.1.Procedures for trouble .......................................................................................................................... 102
13. General Specifications..................................................................................................10513.1. General Data ....................................................................................................................................... 106
13.2. Options ................................................................................................................................................ 108
14. Drawings.......................................................................................................................10914.1. Dimensional drawing ............................................................................................................................110
14.2. Wiring Diagram .....................................................................................................................................111
15. Model Selection ............................................................................................................12115.1. Selection Example ............................................................................................................................... 122
15.2. Performance Table............................................................................................................................... 123
15.3. Electrical Data .................................................................................................................................... 127
15.4. Sound Data .......................................................................................................................................... 128
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Contents
TCGB0054 rev.0 - 08/2010
Technical Catalogue
16. Application Data............................................................................................................12916.1. Working Range .................................................................................................................................... 130
16.2. Part Load Performance ....................................................................................................................... 131
16.3. Ethylene Glycol Application ................................................................................................................. 132
17. Components Data.........................................................................................................13517.1. Compressor ......................................................................................................................................... 136
17.2. Condenser and Condenser Fan .......................................................................................................... 136
17.3. Water Cooler ........................................................................................................................................ 137
Contents (Cont.)
TCGB0054 rev.0 - 08/201010
Contents
Technical Catalogue
¡ Unit code list
NOTE:
MODEL CODIFICATION Please check by model name your unit type, its abbreviation and reference number in this technical catalogue.
RCUE-AG2B SERIES
Unit Code Unit Code
RCUE180AG2B 8E181073 RCUE320AG2B 8E321073
RCUE210AG2B 8E211073 RCUE350AG2B 8E351073
RCUE240AG2B 8E241073 RCUE400AG2B 8E401073
RCUE280AG2B 8E281073 RCUE450AG2B 8E451073
3~
RCUE180AG2B
Unit type
Capacity (HP) SeriesR407C refrigerant
Air cooledMade in Europe
Large compressor
Important Notice
Technical Catalogue
11. I m p o r t a n t N o t i c e
TCGB0054 rev.0 - 08/2010 11
1. Important Notice .......................................................................................................... 11
Contents
Important Notice
Technical Catalogue
TCGB0054 rev.0 - 08/201012
− HITACHI pursues a policy of continuing improvement in design and performance of Products. The right is therefore reserved to vary specifications without notice.
− HITACHI cannot anticipate every possible circumstance that might involve a potential hazard. − No part of this manual may be reproduced without written permission. − Signal words (DANGER, WARNING and CAUTION) are used to identify levels of hazard seriousness.
Definitions for identifying hazard levels are provided below with their respective signal words.
DANGER:Immediate hazards which WILL result in severe personal injury or death.
WARNING:Hazards or unsafe practices which COULD result in severe personal injury or death.
CAUTION:Hazards or unsafe practices which COULD result in minor personal injury or product or property damage.
NOTE:Useful information for operation and/or maintenance.
− If you have any questions, contact your contractor or dealer of HITACHI. − This instruction gives a common description and information for this air-cooled water Chiller which you
operate as well as for other models. − This air-cooled water Chiller has been designed for the following temperatures. Operate the air-cooled water
Chiller within this range.
Working Range for RCUE-AG2B
Maximum Minimum
Ambient Temperature (ºC) 46 -15
Chilled WaterOutlet Temperature (ºC)
15 5 (-10)*
(*) In case of low water outlet temperature option
− These instructions should be considered as a permanent part of the water Chiller equipment and should remain with the unit.
Features and Benefits
Technical Catalogue
2
2. F e a t u r e s a n d B e n e f i t s
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2. Features and Benefits .................................................................................................132.1. Unit picture .............................................................................................................................................. 14
2.2. Control ..................................................................................................................................................... 15
2.3. LCD Control Panel................................................................................................................................... 16
2.4. Compressor ............................................................................................................................................. 16
2.5. Fan motor ................................................................................................................................................ 19
2.6. Electronic expansion valve ...................................................................................................................... 19
Contents
Features and Benefits
Technical Catalogue
TCGB0054 rev.0 - 08/201014
2.1. Unit picture
2.210mm shorter
New Model: 10,560 mm
Previous Model: 12,790 mm
HITACHI is a world leader in technology and with continual product research and development, which offers screw type Air Cooled Chillers from 439 kW to 1166 kW.
¡ New product line
The new product line increases capacity range of the HITACHI Air Cooled Water Chillers to cover the market requirements up to 1,2MW with the new RCUE450AG2B unit.
¡ Compact installation
The last modifications of air side heat exchanger dimensions and the new designs for refrigerant distribution to each pass have allowed reducing up to 20% of the length.
Comparison with 350HP
Cooling capacity range
1166 kW439 kW
112 kW 1030kW
2.230 mm shorter
Features and Benefits
Technical Catalogue
2
TCGB0054 rev.0 - 08/201015
2.2. ControlHITACHI Controls have been developed to achieve the best performance of the units and the interaction with the user.
¡ Many functions
− Current limiter
− Forced compressor load control
− 2 different temperatures setting
− Various fan speed control
− Memory data in alarm
− Automatic restart after power failure
− Output signal for free cooling application
− External thermostat operation, etc…
¡ Precise temperature control
Combinations of “Continuous Capacity Control Compressor” and “HITACHI’s unique electronic controls” enable the Chiller to control outlet water temperature precisely, independent of cooling load.
This control benefits not only Air-conditioning but also industrial process use.
Stop Control:Temperature Band 7ºC
Load up 1
Continuous Control:Temperature Band 2ºC Neutral Band
Load up 2
Wat
er O
utle
t Tem
pera
ture
------- Conventional Step ControlHitachi Continuous Capacity Control____
Features and Benefits
Technical Catalogue
TCGB0054 rev.0 - 08/201016
2.3. LCD Control PanelHITACHI AG2B series are equipped with a friendly user liquid crystal display (LCD), which shows the data of the unit and allows the settings of several parameters for optimizing the performance of the unit depending on the specific applications.
¡ LCD Panel options
− Compressor load
− Status information for each fan
− Discharge pressure and suction pressure information
− Several water and refrigerant temperature information
− Compressor current consumption information
− Setting options to specify installation conditions in order to optimize the chiller performance
2.4. CompressorThe HITACHI Samurai range incorporates the latest development of Hitachi’s screw compressor technology with the Hitachi’s Continuous Capacity Control.
Features and Benefits
Technical Catalogue
2
TCGB0054 rev.0 - 08/201017
¡ Twin screw compressor
By having so few moving parts, it has become highly reliable with very low noise level and low vibration.
¡ Principle of compression
ReciprocatingScrew
AM
PLI
TUD
E (µ
m)
Time (second)
LOW VIBRATION
Suction Port
Discharge Port
Features and Benefits
Technical Catalogue
TCGB0054 rev.0 - 08/201018
¡ Continuous capacity control
HITACHI´s Continuous Capacity Control system uses advanced electronic controls to position the infinitely variable slide valve within each compressor.
This modulation allows exact load control and accurate chilled water temperature without the need for expensive inverters.
¡ Energy Saving
Thanks to Continuous Capacity Control, 15~20% energy saving is possible compared with current step control systems due to the following:
The cooling load can be more closely matched
Continuous Capacity Control takes advantage of high efficiency part load performance.
Frequent compressor starts and stops are eliminated.
continuous capacity control
Cooling capacity (%)
Mot
or in
tup
(%)
Part Load performance
Cooling load = continuous capacity control
Coo
ling
load
%
Time (Hour)
Step Control
Features and Benefits
Technical Catalogue
2
TCGB0054 rev.0 - 08/201019
2.5. Fan motor
¡ DC Fan Motor with Outstanding Efficiency
The DC fan motor greatly improves efficiency compared to conventional products using an AC motor. Furthermore, air blasts are reduced by controlling the rotation speed of the fan.
PWM (pulse width modulation) concept of speed control
The switching element (a power MOSFET) switches back and forth at a frequency of several tens of kHz. This controls the ON//OFF duty rate per cycle and thus changes the voltage applied to the fan motor to control the rotation speed.
¡ Low Sound
Hitachi uses high technology to achieve the lowest sound. The new two bladed propeller, rather than four bladed, achieves a reduction of noise level, increases air flow volume, and at the same time provides an important reduction of motor power input
2.6. Electronic expansion valveThese units are equipped with an electronic expansion valve to provide sophisticated control under any temperature condition.
The electronic expansion valve provides reduced electrical power consumption compared to the classical system.
Mot
or E
ffici
ency
(%)
DC Motor
Efficiency increased by 40% (motor input halved)
AC Motor
Revolutions per minute (rpm)
Operation Instructions
Technical Catalogue
3
3. O p e r a t i o n I n s t r u c t i o n s
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3. Operation Instructions .................................................................................................213.1. Hitachi Air-Cooled Water Chillers ............................................................................................................ 22
Contents
Operation Instructions
Technical Catalogue
TCGB0054 rev.0 - 08/201022
3.1. Hitachi Air-Cooled Water Chillers
¡ Previous starting check
− Before starting, see chapter 6.1. Electrical Wiring and 7.2 Test running.
NOTE: Due to safety reasons, it is recommended to operate the unit remotely with the doors of the electrical box closed.
¡ Starting
− Open the water inlet and outlet valves
− Switch on handle on the electric box to electrical power supply (white lamp inside electrical panel in ON)
− Start the cycle operation locally, by pressing white ON button on the panel, or remotely by the provided actuator (green lamp inside the electrical panel is ON)
− Compressor will start to run approximately 3 minutes after switch ON (if desired check setting configuration to increase compressor starting delay. Chapter 8)
− Ensure that the displayed data in LCD are within the working range (consult to the HITACHI technical service)
− Set the desired water temperature on LCD.
¡ Stop the unit
− Compressors operation is switch off by pressing black button “OFF” inside the electrical panel.
NOTE:OFF function is always available in both, local and remote control mode.
¡ Performance
− Specific installation conditions (load, location, ambient temperature, water, etc…) could require adjusting the water temperature control in order to optimize the chiller performance. (See water system control setting on Chapter 8).
¡ Alarms and cautions
− In case of abnormal chiller performance check alarms or caution indications on LCD.
− When some alarms occur yellow lamp is ON and LCD is red colored. Check troubleshooting for details in Chapter 9
¡ Periodical checking
1. Check the power supply
2. Check abnormal sound or vibrations
3. Check that the unit amperage is within the range by any ammeter in the LCD
4. Check that water circuit parameters are within the range
5. Check that refrigerant circuit parameters are within the range
Power on (green)Alarm OM (ambar)
Compressor and refrigerant cycle (white)Switch off button (black)
Switch on button (white)
Name of parts
Technical Catalogue
4
4. N a m e o f p a r t s
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4. Components of Chiller .................................................................................................234.1. Structure drawing .................................................................................................................................... 24
Contents
Name of parts
Technical Catalogue
TCGB0054 rev.0 - 08/201024
4.1. Structure drawing
¡ HITACHI Air-Cooled Water Chiller unit (Example of 2 compressors Chiller) (Complementary drawing)N°
Nam
eN°
Nam
e
1C
ompr
esso
r10
Ele
ctro
nic
Exp
ansi
on V
alve
2W
ater
Coo
ler
11Li
quid
Lin
e S
top
Valv
e
3C
onde
nser
12Fi
lter D
rier
4E
lect
rical
Box
13Li
quid
Sig
ht G
lass
5P
ower
Wiri
ng S
uppl
y14
Sol
enoi
d Va
lve
(onl
y fo
r 180
, 240
, 350
, 450
HP
)
6Fa
n15
Eco
nom
izer
(onl
y fo
r 180
, 240
, 350
, 450
HP
)
7C
heck
Val
ve
16H
igh
Pre
ssur
e S
witc
h
8O
il S
ight
Gla
ss17
Pre
ssur
e re
lief v
alve
9O
pera
tion
Sw
itch
Air
Out
let
Air
Out
let
Air
Out
let
Air
Out
let
Air
Out
let
Air
In
let
Air
Out
let
Air
Out
let
Air
Out
let
Wat
er
Inle
tW
ater
O
utle
tW
ater
In
let
Wat
er
Out
let
Air
In
let
Sid
e Vi
ew
Name of parts
Technical Catalogue
4
TCGB0054 rev.0 - 08/2010 25
¡ HITACHI Air-Cooled Water Chiller unit (Example of 2 compressors Chiller)
Detail of PIPE Assy structure.
Electrical box detail (A)
Air Outlet
Air Outlet Air Outlet
Air Outlet Air Outlet
Air Inlet
Air Inlet
Air Inlet
Air Inlet
Rear view Front view
Preparation initial checkTechnical Catalogue
5
5. P r e p a r a t i o n I n i t i a l C h e c k
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5. Preparation Inital Check ..............................................................................................275.1. Initial check .............................................................................................................................................. 28
5.2. Placing The Unit ...................................................................................................................................... 29
5.3. Gravity centre .......................................................................................................................................... 30
5.4. Service Space and Foundation ............................................................................................................... 31
5.5. Transportation.......................................................................................................................................... 33
5.5.1. Transportation by rigging ................................................................................................................................. 335.5.2. Transportation by Roller .................................................................................................................................. 365.5.3. Declining the Unit During Transportation. ....................................................................................................... 36
Contents
Preparation initial check
Technical Catalogue
TCGB0054 rev.0 - 08/201028
5.1. Initial check
¡ Required Materials
Measure and architectural information regarding installation location
¡ Installation Location
Confirm that the final installation location is provided with convenient piping and wiring work. Strong water runoff should be avoided.
This unit must be installed in restricted area not accessible to the general public. Install the unit on a roof or in an area where people, except service engineer, can not touch the unit.
¡ Installation Space
Check for obstacles which restrict condenser Air flow or hamper maintenance work in the space specified.
¡ Foundation
Check to ensure that the foundation is flat, level and sufficiently strong, taking into account the maximum foundation gradient (Fig. 2) and the unit weight balance. Confirm elevation provision for the unit on a solid base with an iron frame or concrete curbs shown in chapter 5.4.
In order to obtain proper clearance beneath the unit for either rooftop or on-the-ground installation, where foundation bolts should be sunk into concrete. Additionally, for on-the ground installation, provide a gravel or concrete space around the condenser Air intake in order to avoid Airflow obstruction due to grass or other vegetation.
¡ Unit
Check to ensure that the unit has been transported without damage. File a damage claim with the transportation companies if mishandling due to transportation company negligence is suspected.
¡ Transportation
Secure the route to the final installation location by confirming the dimensions, (Refer to the “Unit General Data” in Catalogue).
DANGER:If leakage is detected, stop the unit and contact the installer or service shop. Do not use a naked fire near the refrigerant gas. If a naked fire is utilised near the refrigerant gas, refrigerant is turned into a harmful phosgene compound.
WARNING:This unit is operated with refrigerant R407C, which is non-flammable and non-poisonous. However, refrigerant itself is heavier than the atmosphere so that a floor is covered with refrigerant gas if refrigerant is leaked. Therefore, keep good ventilation to avoid choke during servicing.
CAUTION:Check to ensure that valves are correctly opened. If not opened, serious damage will occur to the compressor due to an abnormal high pressure.This unit controls air flow for condenser during low ambient temperature.Due to this control, avoid the strong wind hits the unit directly. In such a case, put buffer plate around the unit.
Preparation initial checkTechnical Catalogue
5
TCGB0054 rev.0 - 08/2010 29
5.2. Placing The Unit
¡ Tools and Instruments
Pincers, Wrenches, Facilities to Transport and Place The Unit.
¡ Transportation
Transport the unit as close to the final installation location as practical before unpacking is accomplished. Provide adequate facilities to place the unit on the foundation, with sufficient consideration given to those individuals performing the installation.
¡ Unpacking
Follow the instructions marked on the packing.
NOTE:The height of the wall shall be smaller than that of the unit cabinet. When the unit is installed at a location where the unit is encircled with walls and obstruction of free Air circulation is suspected, construction with HITACHI regarding the operation space is recommended.
3000mm Overhead Air Clearance
h1 ≤ h2
h1
h2
Preparation initial check
Technical Catalogue
TCGB0054 rev.0 - 08/201030
¡ Maximum Foundation Gradient
The unit should be installed in an upright position within the gradient shown in next figure.
15 mm
30 mm
5.3. Gravity centre
¡ Air-Cooled Water ChillerCentre of Gravity
Control panel
Centre of Gravity
RCUE 180, 210, 240AG2B
RCUE 280, 320, 350, 400, 450AG2B
Preparation initial checkTechnical Catalogue
5
TCGB0054 rev.0 - 08/2010 31
Centre of Gravity
Control Panel
ModelRCUE-AG2B
180 210 240 280 320 350 400 450
Location Weight distribution (Kg)
1 663 786 800 678 690 697 841 8582 742 793 820 696 716 730 772 8033 255 318 344 214 234 248 278 3054 290 332 346 281 293 300 349 3665 663 786 800 286 299 305 355 3726 742 793 820 192 211 225 249 2777 255 318 344 757 778 792 838 8688 290 332 346 536 548 555 677 6949 678 690 697 841 85810 696 716 730 772 80311 214 234 248 278 30512 281 293 300 349 36613 286 299 305 355 37214 192 211 225 249 27715 757 778 792 838 86816 536 548 555 677 694
Operating Weight(Kg) 3900 4458 4620 7280 7538 7704 8718 9086
Location of Centre of Gravity (mm)
Dimension A 2355 2825 2845 5300 5305 5310 6460 6470Dimension B 975 975 975 975 975 975 975 975
5.4. Service Space and Foundation
RCUE 180 AG2B
Vibration-proof Rubber mat(12 positions)
Bottom Frame
8-Ø26(Mounting holes)
Preparation initial check
Technical Catalogue
TCGB0054 rev.0 - 08/201032
RCUE210, 240 AG2B
Vibration-proof Rubber mat(14 positions)
Bottom Frame
8-Ø26(Mounting holes)
RCUE280,320, 350AG2B
Vibration-proof Rubber mat(24 positions)
Bottom Frame
16-Ø26(Mounting holes)
Preparation initial checkTechnical Catalogue
5
TCGB0054 rev.0 - 08/2010 33
RCUE400, 450AG2B
Vibration-proof Rubber mat(28 positions)
Bottom Frame
16-Ø26(Mounting holes)
Detail of foundation
Bottom Frame
Foundation Bolt
Rubber Bush
(OPTION)
Steel Plate
Concrete
Washer
Vibration-Proof Rubber Mat (1 mat per position)
(OPTION)
Nut
(M20)
(1 mm)
5.5. Transportation5.5.1. Transportation by rigging
Hook wire cables and apply field-supplied spreader bars on the top of the unit (see figure below) to prevent the unit panels from damage due to cable scratches. The unit should remain in an upright position even during rigging. The wire cable to rig the unit shall be three times stronger than the unit weight. Check to ensure that the rigging bolts are tightly fixed to the unit. The rigging angle shall be less than 60° as shown. The weight of the unit is indicated on the unit label.
DANGER:Do not stand below the unit when rigging.
CAUTION:Put clothes between wires and the unit to avoid damages.
WARNING:Follow strictly the lifting method shown by the drawing attached to the unit.
Preparation initial check
Technical Catalogue
TCGB0054 rev.0 - 08/201034
¡ RCUE180AG2B
Rigging holes
Electrical box
Spreader Bar(Field supplied)
Lifting bracket(Field supplied)
A Detail
¡ RCUE210,240AG2B
Rigging holes
Electrical box
Spreader Bar(Field supplied)
Lifting bracket(Field supplied)
A Detail
Preparation initial checkTechnical Catalogue
5
TCGB0054 rev.0 - 08/2010 35
¡ RCUE280,320,350AG2B
Rigging holes
Electrical box
Spreader Bar(Field supplied)
Lifting bracket(Field supplied)
A Detail
¡ RCUE400,450AG2B
Rigging holes
Electrical box
Spreader Bar(Field supplied)
Lifting bracket(Field supplied)
A Detail
Preparation initial check
Technical Catalogue
TCGB0054 rev.0 - 08/201036
5.5.2. Transportation by Roller
When rolling the unit, put equal-sized rollers every 1 meter under the base frames. Each roller must carry both the outer frames, and must be suited to balance the unit (see the centre of gravity in page chapter 5.3).
5.5.3. Declining the Unit During Transportation.
WARNING:Do not decline the unit more than an angle of 15º as shown in the figure during transportation. If declined more than an angle of 15º, the unit may fall down.
Installation
Technical Catalogue
6
6. I n s t a l l a t i o n
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6. Installation ...................................................................................................................376.1 Handle installation .................................................................................................................................... 38
6.2. Electrical Wiring ....................................................................................................................................... 38
6.3 Water piping ............................................................................................................................................. 42
6.4. Typical common water piping .................................................................................................................. 43
6.5. Minimum internal system water volume .................................................................................................. 44
6.6. Water control ........................................................................................................................................... 44
6.7. BMS gateways......................................................................................................................................... 45
6.7.1. HARDC70-CE1 (OP) - Lon Works interface. .................................................................................................. 456.7.2 HC-A32MB - ModBus interface ........................................................................................................................ 49
6.8. Remote controllers .................................................................................................................................. 51
6.8.1. CSC-5S – Central Station ............................................................................................................................ 51 6.8.2. CSNET Web – Computer central control ..................................................................................................... 54
Contents
Installation
Technical Catalogue
TCGB0054 rev.0 - 08/201038
6.1 Handle installation
6.2. Electrical Wiring
¡ Tools and Instruments
One Set of Wiring tools and Electrical Tester (Clamp Meter)
¡ Schedule Check
DANGER: − This unit must be installed in a restricted area not accessible to the general public.
− Before obtaining access to terminals, all supply circuits must be disconnected. Switch OFF main switch (M.I) for any work inside electrical box.
− Keep electrical box cover closed 2 min. after switching power off (to discharge the capacitors). Do not switch power ON before connecting the earth protection conductor to “PE” terminal (residual leakage current).
− It is recommended that the main switch be locked in the “OFF“ position, to prevent against accidental supply of power during equipment servicing.
NOTE: − Electrical connection must be done by professional installers.
− Electrical wiring must comply with national and local codes. Contact your local authority in regards to standards, rules, regulations, etc.
1x 2x 3x 6x
Electrical box door
Installation
Technical Catalogue
6
TCGB0054 rev.0 - 08/2010 39
¡ General check
− Check that the earth wire is securely connected, tagged and locked in accordance with national and local codes.
− The following diagram and tables show the Hitachi recommendation for the power supply circuit protections and cables types. Ensure that the field-supplied electrical components (main power switches, circuit breakers, wires, connectors and wire terminals) have been properly selected according to the electrical data indicated. Make sure that they comply with national and regional electrical codes.
− Check periodically the electrical connection tightening
− Make sure that the power supply voltage is within ±10% of the rated voltage.
− Make sure that power supply has an impedance low enough to warranty not reduce the starting voltage more than 85% of the rated voltage.
− Check that power terminals L1, L2, L3 and N (R, S, T and N) are correctly connected to the MI terminals. Check terminals tightening and correct phase connection
¡ Main Power Wiring Procedures
CB – Thermal and Magnetic Circuit Breaker according to 60947-4. C Type for Motor protection trip curve. Fixed Breaking Capacity according the table in next page.
EF – Alternatively, Electric Fuses according to EN 60269-2 could be used instead of CB. Use recommended CB values on the table in next page.
ELB – Earth Leakage Breaker according to EN 61008 and based on TN-S earth protection system.
NOTE:For other earth protection systems check regulations for the most proper ELB value
Maximum allowed electric leakage current according to the following table (RMS at 50Hz).
ELB must be A Class. “si” super-immunized earth leakage protection without tripping delay (no S type)
Earth protection system should not have a total resistance higher than 100Ω The maximum trip time for 300 mA should be 0.3s. Earth resistance should be improved if ELB trip time at 0.3s is not ensured.
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Cable sizes: Copper with XLPE insulation according to IEC 60364-2-52 considering the following installation type:
3 single core loaded cable in a perforated tray and laid in flat formation.(Table A.52-12, method F-6)
Bus Bar: Non insulated copper bus bars according to EN 13601. Considering max. temp. of 65ºC on the bar.
¡ Recommended valves
CB (EF) ELB - Is Cable Bus Bar Cable Bus Bar
4 poles 4 poles recommended maximum
[A] [mA] [mm2] [mm*mm] [mm2] [mm*mm]
400 300 150 30x10 2*185 2*32x6
630 300 240 30x10 2*185 2*32x6
630 300 240 30x10 2*185 2*32x6
630 300 240 30x10 2*240 2*50x5
630 300 240 30x10 2*240 2*50x5
800 300 2*150 40x10 2*240 2*50x5
1000 300 2*185 40x10 2*240 2*50*6
1000 300 2*185 40x10 2*240 2*50*8
NOTE:The indicated values are the recommended values considering installation type described previously. In any case, follow local or national regulations.Recommended cables and bus bars are selected considering CB tripping value. Proposed CB tripping values are fixed standard rated values available on the market. If using variable CB which allows an accurate tripping value setting (based on maximum unit current and maximum staring current in electrical data on chapter 15) then, lower cable or bus bars sizes could be selected.Depending on the installations type, cable trays, maximum allowed temperature and other factors, different cables or bus bar types and sizes could apply.
De = the external diameter of a multi-core cable
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¡ Control Wiring
− Connect the interlock wiring and control wiring between the unit terminals and the magnetic switches for the water pumps, according to next figure or the wiring label. The main connection terminal N is required.
NOTE:1. All the settings shall be performed before Power ON.
2. Remote/Local Change over Switch on Operation Switch shall be set to “Remote”. 3. Terminals 1~n57 are for 1~ 230V 50Hz
Terminals A~D are for DC24V Terminals E~F are H-LINK (Low signal)
¡ Available functions:
Low signals (<50V)
− Remote control– terminals A~D (see setting on LCD in chapter 8.2.2)
− Remote control by Hitachi controllers or gateways (H-LINK) – terminals E,F
230 V signals (see setting on PCBa in chapter 8.2.2)
− Remote control – terminals 5~13 (see setting PCBa in chapter 8.2.2)
− Night sift mode operation Option – terminals 22, 24
− 2nd setting temperature activation – terminals 23, 24 (see temperature setting on LCD in chapter 8.2.2)
− External thermostat Option– terminals 25, 24
− Fan Operation activation Option – terminals 26,24
− Water Protection Switch Option (DPSW or Flow SW Options) – terminals 33, 34
− Force Compressor Load Option (thermo off, hold, load down, load up) – terminals n50~n53 (n: 1,2)
− Fan Operation Caution – terminals n54, n55 (n: 1,2)
− Free Cooling Option – terminals 156, 157
Low voltage
Remote Control
RUN/STOP
SIGNAL
ALARM
SIGNAL DC24V
ALARM
LAMPPump Interlock
Pump Operation
In case of remote control operation this wire shall be removed
R Phase
R PhaseNeutral
2 cycles
Remote Control Switch (Option)
In case of individual indication without Remote Control Switch
Customer wiring Setting of low voltage control
Force Compressor Load
Only used for some options:
- Diff. water pressure swiitch
- Flow switch
Night Shift Mode
(OPTION)
2nd. setting temperature (OPTION)
External Therm. Oper.
(OPTION)
Fan Operat Forced Mode
(OPTION)
Only used for
-Diff. water PSW
- Flow switch (options)
Forced CompressorLoad Operation
Caution LampFan operat.
Free CoolingOutput signal(Only cycle nº1)
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6.3 Water piping
¡ When Piping Connections are performed:
1. Connect all pipes as close as possible to the unit, so that disconnection can be easily performed when required.
2. Connect the Water Coolers in the same unit to the same common Water Piping.3. It is recommended for the piping of the chilled water inlet and outlet that flexible joints be utilised, so that
vibration will not transmit.4. Whenever permissible, sluice valves should be utilised for water piping, in order to minimise flow
resistance and to maintain sufficient water flow.5. Proper inspection should be performed to check for leaking parts inside and outside the system, by
completely opening the chilled water inlet and outlet valves to the water cooler. Additionally, equip valves to the inlet and outlet piping. Equip an air purge cock on the inlet piping and a drain cock on the outlet piping. The cock handle should be removed so that the cock can not be opened under normal circumstances. If this cock is opened during operation, trouble will occur due to water blow-off.
6. Sufficiently perform insulation to keep the chilled water piping cool and to prevent sweating of the piping.7. Under the condition where the ambient temperature is low in winter, there is a case where equipment
and piping will become damaged during the shutdown periods at night, because the water in the pump or piping will be frozen. To prevent freezing of the water, it is effective to operate the pumps. HITACHI Chiller has the pump ON/OFF operation control (see wiring diagram) water from piping. Additionally, in a case where measures such as water draining are difficult, utilise antifreeze mixture of ethylene glycol type or propylene glycol type.
8. The common water pipes (Inlet/Outlet) are field supplied (only for RCUE 180~400AG2B). Typical pipe working examples are indicated on page 15. It is not necessary to install any sensor in these common pipes for standard models.
Number of connections for models:
Models Water Inlet Water OutletRCUE 180, 210, 240AG2B 1 1RCUE 280, 320, 350, 400, 450AG2B 2 2
NOTE:Common Water Piping connecting each cooler is prepared as Option.
CAUTION:This product is equipped with plate type heat exchanger. In the plate heat exchanger, water flows through a narrow space between the plates. Therefore, there is a possibility that freezing may occur if foreign particles or dust are clogged. In order to avoid this clogging, 20 mesh water strainer shall be attached at the inlet of chilled water piping near the product. In case of punching metal type strainer, mesh hole size shall be Ø 1.5mm or less. Never use the salt type antifreeze mixture, because it possesses strong corrosion characteristics, and water equipment will be damaged.
Pressure Gauge
Strainer
Flexible Joint
Valve
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CAUTION:In case of connecting some units to the same water piping, design the water piping so that the water distribution to each unit is equal (refer to figure below) Imbalance of water distribution may cause a serious damage like a water freezing in the heat-exchanger.
6.4. Typical common water piping
RCUE280, 320, 350, 400, 450AG2B
a b Flange sizeConnecting
pipe diameter (mm)
RCUE280AG2BRCUE320AG2BRCUE350AG2B
10240 4745 6” 168.3
RCUE400AG2BRCUE450AG2B
12640 5945 8” 219.1
Chiller Unit
Water Pump
Heat Load Side
Dim
Model
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6.5. Minimum internal system water volumeTo ensure the cooling operation at least 5 minutes without interruption, the internal chilled water volume in the piping system should be greater than the minimum volume as shown below.
Model RCUE-AG2B 180 210 240 280 320 350 400 450
Minimum Internal Water Volume 1,21 1,45 1,60 2,04 2,20 2,41 2,90 3,21
NOTE:Minimum internal system water volume written avobe is for standard ON/OFF differential.In case of changing ON/OFF differential, minimum internal water volume changes as following percentage.
Inlet ON/OFF Differential (set by Dip-switch 5, 3&4pins) 4°C 3°C 2°C 1°C
Minimum Internal Water Volume 50% 67% 100% 200%
To prevent frequent ON/OFF for no load or extremely low load operation, system internal water volume shall be more than above table.ON/OFF cycles shall be maximum 6 times per hour. (minimum 5 minutes operation and minimum 5 minutes thermostat OFF)
6.6. Water control
CAUTION:When industrial water is applied for chilled water and condenser water, industrial water rarely causes deposits of scales or other foreign substances on equipment. However, well water or river water may in most cases contain suspended solid matter, organic matter, and scales in great quantities. Therefore, such water should be subjected to filtration or softening treatment with chemicals before application as chilled water.It is also necessary to analyse the quality of water by checking pH, electrical conductivity, ammonia ion content, sulphur content, and others, and to utilise industrial water only if problem is encountered through these checks.
The following is the recommended standard water quality.
ItemChilled Water System Tendency (1)
Circulating Water (20 °C Less than) Supply Water Corrosion Deposits of Scales
Standard Quality pH (25 °C) 6.8 ~ 8.0 6.8 ~ 8.0
Electrical Conductivity (mS/m) (25°C)µS/cm (25 °C) (2)
Less than 40 Less than 400
Less than 30 Less than 300
Chlorine Ion (mg CI¯/I) Less than 50 Less than 50
Sulphur Acid Ion (mg SO42¯/I) Less than 50 Less than 50
The Amount of Acid Consumption (pH 4.8) (mg CaCO3/I)
Less than 50 Less than 50
Total Hardness (mg CaCO3 /I) Less than 70 Less than 70
Calcium Hardness (mg CaCO3 /I) Less than 50 Less than 50
Silica L (mg SIO2 /I) Less than 30 Less than 30
Reference Quality Total Iron (mg Fe/I) Less than 1.0 Less than 0.3
Total Copper (mg Cu/I) Less than 1.0 Less than 0.1
Sulphur Ion (mg S2¯/I) It shall not be detected.
Ammonium Ion (mg NH4+/I) Less than 1.0 Less than 0.1
Remaining Chlorine (mg CI/I) Less than 0.3 Less than 0.3
Floating Carbonic Acid (mg CO2/I) Less than 4.0 Less than 4.0
Index of Stability 6.8 ~ 8.0 -
NOTE:The mark “” in the table means the factor concerned with the tendency of corrosion or deposits of scales.The values shown in “ ” are for reference only according to the former unit.
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6.7. BMS gateways
NOTE:The mark “” in the table means the factor concerned with the tendency of corrosion or deposits of scales.The value showed in “ ” are for reference only according to the former unit.
6.7.1. HARDC70-CE1 (OP) - Lon Works interface.
¡ General Features − Gateway interface with BMS LonWorks systems (installations with intelligent BMS control).
− With the HARC-70CE1 connection to a H-LINK network, it is possible to control 4 setting points and 7 monitoring points of up to 4 chillers.
− With the HARC-70CE1 OP connection to a H-LINK network, it is possible to control 4 setting points and up to 44 monitoring points of one chiller unit.
− The HARC-70CE1 (OP) remote controls offer the option of self-checking their own status.
¡ SystemThe following figure shows the internal configuration of the BMS connection used by the
HARC-70CE1(OP).
CAUTION:Make sure that the shielded cable is earthed.
There are two options for water chillers:
- HARC-70CE1
- HARC-70CE1 OP
The HARC-70CE1 OP is a LonWorks interface designed for cases where only the control of the units is required and there is no need for unit operation monitoring.
The HARC-70CE1 allows the control of up to 4 water chiller addresses
Monitoring equipment
Monitoring equipment
Chiller unit 1
Chiller unit 1
Chiller unit 2
Chiller unit 3
Chiller unit 4
HARC-70CE1 OP
ModBus ModBus
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¡ HARC-70CE1 (OP) Specifications
− Hardware specifications
Element Specification
Power supply 1~ 230V 50Hz
Energy consumption 10W (max.)
External dimensions Width: 170 mm, height: 75 mm, depth: 80 mm (Installed inside the box)
Weight 0.6 kg
Installation conditions Indoor
Temperature conditions 0~45 °C
Humidity conditions 10~80% (No dew)
− Telecommunications specifications for water chillers
Element Specification
Communication unit Water chillers
Communications cable Non polar, twisted and shielded 2 cable system
Telecommunications system Half-duplex telecommunications
Synchronous system Asynchronous communication system
Telecommunications speed 9,600 bps
Cable length 1,000 m (total length)
Connection quantityHARC-70CE1 type: Maximum of 4 chiller addressesHARC-70CE1 OP type: Maximum of 1 chiller address
− Telecommunication specifications for the upper system
Element Specification
Communication unit Upper monitoring equipment
Transmission protocol LonTalk (*) protocol
Access method Persistent CSMA/CD system planned
Coding system Differential Manchester Code
Telecommunications speed 78,000 bps
Maximum cable length 500 m (total bus length)
(*) “LonTalk” is an “Echelon Corporation” trademark in the USA and other countries.
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¡ Control Signal
Control OperationON/OFF Chiller All HARC’S
Outlet Water Setting All HARC’S
State Monitoring
ON/OFF All HARC’S
Chilled Water Outlet Setting All HARC’S
Chilled Water Outlet Temperature All HARC’S
Chilled Water Inlet Temperature. All HARC’S
Alarm Codes All HARC’S
Operation Status All HARC’S
Discharge Pressure 1,2 Only HARC OP
Suction Pressure 1,2 Only HARC OP
Discharge Temperature 1,2 Only HARC OP
Suction Temperature 1,2 Only HARC OP
Compressor Status (ON/OFF) 1,2 Only HARC OP
Outlet Water Temp. 1 Only HARC OP
Water Temp. In Evap. Backside 1 Only HARC OP
¡ Installation
a. Space requirements
NOTE:- Bear in mind the safety summary warnings when selecting the installation site.- The installation site should be located in a place with an earthing connection.
Space required for the installation
b. Installation procedure 1. Install the HARC-70CE1 in an earthed metal box, bearing in mind the following HARC-70CE1 dimensions for
the box that it will be installed in.
POW
IRP PACCONTROL SYSTEM G/W
170
162
72 807
75
8
After opening
DOWN
UP
Identification number NEURON CHIP at the back of the cover
After opening
Terminals cover
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2. Secure the HARC-70CE1 in accordance with the following instructions, depending on if it is mounted with screws or DIN rails.
170 44162
72 (87)2-M4
(170)
40(8
7)
Screw mounting DIN rail mounting
Central rail DIN line
c. Electrical Wiring
CAUTION:- All wiring work must be done in accordance with local regulations and the instructions of the electricity company.- A qualified electrician should carry out the electrical wiring.- Adjust the electrical leakage detector switch in accordance with local regulations.
1. The HARC-70CE1 should be installed between the power supply, the monitoring equipment, the water chiller and the earth connection.
2. Wiring connection
Nº Description Wire size
1~230V 50Hz power supply wiring (field supplied) 2 mm2 shielded
Connection with chiller, H- Link (field supply) 0.75 mm2 twisted-pair cablewith a maximum length of 1000 m
Connection wire with upper system (field supplied)
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6.7.2 HC-A32MB - ModBus interface
¡ General features − Gateway interface with BMS ModBUS systems (installations with intelligent control or BMS). − With the HC-A32MB connection to a H-LINK network, it is possible to control 4 setting points and 16 monitoring
points. − With the HC-A32MB it can be controlled up to 8 AG2B chillers
¡ System
The following figure shows the internal configuration of the BMS connection used by the
HC-A32MB
Monitoring equipment
Monitoring equipment
Chiller unit 1
Chiller unit 1
Chiller unit 2
Chiller unit 3
Chiller unit 4
HARC-70CE1 OP
ModBus ModBus
CAUTION:Make sure that the shielded cable is earthed
¡ HC- A32MB SpecificationsHardware Specifications
Item SpecificationsPower supply 1~ 230 V ±10% 50Hz
Consumption 25 W (maximum)
Outer dimensions Width: 143 mm, Depth: 302 mm, Height: 76 mm
Weight 1.75 kg
Assembling conditions Indoors (in a control panel or desktop)
Ambient temperature 0~40 °C
Humidity 20~85% (Without condensation)
MODBUSItem SpecificationsK5 Serial Port RS485 (3 Pins connector) - MODBUS Protocol
Communication line Twisted pair cable. Polarity
Communicatrion system Half-duplex, multipoint serial connection
Communication method Non parity or odd/even parity selection. Data lenght: 8 bits - 1 stop bit
Baud rate transmission 19200/9600 Baud
Length max. 1200 m according EIA-485
H-LINKItem SpecificationsCommunication with HITACHI PACKAGED/CHILLER
Communication line Twisted pair shielded cable, non polarity
Communications system Half-duplex
Communication method Asynchronous
Speed of transmission 9600 Bauds
Length of wiring 1000 m maximum (total length of HLINK I/O bus)
Maximum number of HC-A32MB 8 HC-A32MB/H-LINK SYSTEM (PACKAGED)1 HC-A32MB/H-LINK SYSTEM (CHILLER)
Please use it correctly according to the following “CAUTION ON USE.”
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¡ Control signal
Control Operation
ON/OFF Setting order
Mode setting order
Cool/Heat setting temperature
Central setting
State Monitoring
Exist
Chiller Adress
ON/OFF Status
Mode Status
COOL setting temperature status
HEAT setting temperature status
Intel temperature
Outlet temperature
Ambient temperature
Unit operation condition
Alarm code for general Chiller Alarm
Alarm code for cycle alarm
¡ Installation
a. Space requierements
NOTE:Bear in mind the safety summary warnings when the installation site.The installation site should be located in place with an earthing connection.
Keep free grated area for ventilation and cable connection
b. Installation procedure
Perform the following procedure:
1 Remove the rubber supports
2 Unscrew the 4 screws from the top cover and remove it
3 Attach the box to the rear vertical board from the inside with M4 screws (not provided) and place 3 mm washers on the outside to separate the box from the wall.
4 Reinstall the top cover. Be careful to position it correctly.
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The dimensions of the Screw Mounting are showed in previous point.
c. Electrical wiring
Nº Connection Cable Specifications
1~ 230V 50Hz 25W Power supply wiring(With protection circuit)
Select wires accordiong local regulatrions(recommended minimum 1.5 mm² H05RN-F)
Connection with chiller, H-Link(field supplied)
Communication cables for the connection of HC-A32MB to an Hitachi installation. Twisted-pair shielded cable 0.75mm²
Connection wire with upper system(field supplied)
6.8. Remote controllers6.8.1. CSC-5S – Central Station
¡ General features:
− 8 chiller and 8 CSC-5S central remote control addresses can be connected on each H-LINK
− Up to 8 central remote controls (CSC-5S) can be connected to a H-LINK.
− Basic functions, heat/cold mode and temperature setting.
− When a problem occurs, an alarm code will immediately be displayed with detailed information about the error.
− A standard external input terminal is included for possible connection to a timer.
− The external signals control the following functions
- Start/Stop.
- Operation mode (Cooling/Heating).
- Temperature setting (Cold/Heat).
NOTE:AG2 chillers higher than 240HP uses 2 H-LINK addresses, so maximum 4 chillers higher than 240HP (AG2 series) can be controlled by 1 CSC-5S.
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¡ CSC-5S Specifications
Unit operating indicator Individual control indicator Multiple unit control indicator Timer indicator Emergency stop indicator Operation indicator for each unit Demand indicator “No Function” indicator, in the even of a malfunction
Operation mode indication Indicates the operation mode selected for the indicated group: “Cool” (cooling), “Heat” (heating) and “H.RCV” (heat recovery) (not available).
Run indicator (red pilot).
“RUN/STOP” button .
“MODE” button (operation mode selection).
“A/C H.STRG” button (air-conditioning/heat storge).
“TIMER” button (timer selection).
“OPTION” button Used for selecting the different options.
Botón “GROUP” (para ajuste de grupos).
“MODE” button (button for changing display).
“TEMP” button (for setting groups).
“CHECK” button Used for service tasks.
“RESET” button (reset).
“UNIT SELECTION” button.
Temperature setting indicator Inlet/outlet temperature indicator “ABNML” alarm indicator “LOCAL” local indicator
¡ Installationa. Space requirements
Take note of the maximum admissible cable length between units and the control as well as between the units themselves, as shown in the following table:
Cable section 0.3mm² ≥0.75mm²
Cable length 30m 2 mm2 shielded
If several control units are to be installed in a vertical position, leave a distance of at least 50 mm between them to allow the front cover to be opened and to insert the tool for removing the control from its housing.
53
83.5
120
120
15
20
RUN/STOP UNIT SELECTION
EMG. STOP
MULTI
INDVDL
INLET
OUTLET
SET
TEMP.
TEMP.
PR. MPa
CHECKABNMLLOCAL
At least 50 mm
MODE CHANGE A/C H.STRG
TIMER OPTION GROUP
TEMP
CHECK
RESETDISP. MODE
RUN/STOP UNIT SELECTION
EMG. STOP
MULTI
INDVDL
INLET
OUTLET
SET
TEMP.
TEMP.
PR. MPa
CHECKABNMLLOCAL
Model: CSC-5S
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b. Installation procedure
1. Insert the flat headed screwdriver's tip info the grooves on the boltom of the bracket. Push and turn the screwdriver.Remove the part of the remote control linked to the power supply part, as shown in the following figure:
Central control
BraketGroove
Screwdriver
Groove
Braket
Screwdriver
Groove
Braket
2. Connect the power supply part to the control box, as shown below.
NOTE:Do not lay the power supply cable and the remote control cable in the same conduit
Power supply wire
Power supply part
Screws
Control cableControl box
3. Connect the control unit part to the power supply part. Position the top first and then the bottom.
c. Electrical wiring
CAUTION:- Do not position all the signal cables together with the power supply cable and other signal cables. The noise caused by these
cables could lead to the malfunction of the remote control and chiller unit. If the signal cables are next to the power cables and any other signal cables, maintain a distance of at least 15 cm between the signal cables and other cables, or pass the signal cables through a metal conduit which is earthed at one end.
- If the power supply cable is accidentally connected to the terminal board for the transmission signal and voltage is applied, the fuse will blow to protect the printed circuit board. In this case, this remote control can operate without the fuse, if pin no. 2 of DSW3 is set to the ON position.
- If the PSC-A1T remote control's timer is used, set the same address no. for the remote control and the timer.- Make sure that the wiring is correct (do place the signal cables together with the electricity cables). Incorrect wiring could cause
the remote control to malfunction- Before installing the wiring, switch off the power supply to the air conditioning system and central control unit.- Installing the wiring while the central control power supply is switched on may cause the central control unit to malfunction.
Electrical connection of the CSC-5S central remote control with the PSC-A1T timer
NOTE:- Up to 8 PSC-A64S central control units and one CSC-5T timer can be connected to one H-Link.- When installing the timer on an RPK unit, first disable the wireless remote control and then connect a different remote control.
The timer can then be connected to the other remote.
Outdoor units (up to a max. of 8 units)
Outdoor units (up to a max. of 8 units)PSC-A1T CSC-5T
Twisted pair cable1P-0,75 mm²(max. 100 m)
Accessory cable(1 m) Power source
220 or 240VcaTo TB2 of another remote control
ConnectorTerminal
NOTE:Always use 0.75 mm2 twisted pair cable.- Use the field supply cable for connection if the CSC-5S central remote control is used together with the PSC-A1T.- The maximum total length of the wiring for all units is 1000 metres.
6.8.2. CSNET Web – Computer central control
¡ General features
− CSNET WEB is an independent centralised control system which can control an H-LINK communication line. When it is connected to a system with package units, it can control up to 160 indoor units and up to 8 water chillers.
− CSNET WEB uses JAVA technology to control and monitor remotely operation of the installation.
− Can be connected to a Local Area Network through its Ethernet port. After configuring the network, the system will be accessible from any site in the company’s network.
− TIMER which is easier to program the calendar. It can memorize up to 4 years of programming and lets you choose an annual timer independently for each unit and day.
− Building layout view.
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¡ System
The following figure shows the different connection of CSNET WEB
Air conditioning unit
Air conditioning unit
Air conditioning unit
Remote PC
Company’s LAN
Remote PC
Remote PC
Remote PC Remote PC
Firewall
Internet . . .
CSNET WEB
Firewall
Ethernet
¡ CSNET Web Specifications Hardware specifications
Elements Specifications
Alimentació de potència AC 230 V 1~ ±10% (50Hz)Consumption 20W (maximum)External dimensions Width: 240 mm, Length: 204 mm, Alt: 74,5 mmWeight 1,94 kgInstallation conditions Indoors (in a control panel, table-top)Ambient temperature 0~40 °CHumidity 20~85% (Sense condensation)
Specifications for communication with the unitsElements Specifications
Communication with H-LINK (H-LINK II compatible) (1)Communication cable Dos fils, sense polaritatCommunication system Half-duplexCommunication method AsíncronTransmission speed 9600 BaudsCable length Maximum 1000 m (total length)Number of units Up to 64 outdoor units and 160 indoor units or up to 8 water chillers (1)
Communication specifications with a local area network
Elements Specifications
Remote computer Processor at 100 MHz, 256 MB RAM, 200 Mb free and disc space. Windows 200 or higher, with Java Runtime Environment (2) version 6 Update 3 or higher Installed (included in the CD-ROM)
(1) Either package units or water chillers only can be connected in an H_LINK communication line. Mixed connection of package units and water chillers is not permited(2) Java(R) is a registered trade mark of Sun Microsystems
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¡ Installation
a. Space requirements
Make sure that there is sufficient space around the CSNET WEB (a minimum of 50 mm) for heat to dissipate properly (see “Installation procedure”). If the equipment is installed vertically, situate the power feed below and the control outputs above.
b. Installation procedure
1 Remove the rubber base pads
2 Remove the 4 screws from the cover and take it off
3 Secure the box to the vertical back plate from inside with M5 screws (not supplied), using 3 mm washers outside to separate the box from the wall.
4 Replace the cover. Be careful to position the top correctly.
AC IN
3m
m
c. Electrical wiring
Nº Connection Cable Specifications
Transmission cable for the units (H-Link)
Twisted pair cable1P-0.75 mm². Without polarity.Insulated and earned at one end.To select the type of cable, see the Outdoor Unit Installation and Operation Manual.
LAN line
Category 5 or above LAN cable − A cross-over cable is needed for direct
connection to a PC. − A direct cable is needed for connection
to a comercial distributor (Hub)
Network cable 2 phases + earth
AC 230V 1~50HzMake sure that the cable used complies with local regulations and that both the plug and socket are correctly earthed
After making the connections, replace the cover
NL
LAN
CSNET WEB
Plug, power base andearthing should complywith local regulations
Local area
Network
Air conditioning units
12
3
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7. Test Running ................................................................................................................577.1. Preparation .............................................................................................................................................. 58
7.2. Test Running ............................................................................................................................................ 58
7.3. Instructions After Test Running ................................................................................................................ 58
Contents
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7.1. Preparation
¡ Tools and instruments − High Pressure Compound Gauge. Low Pressure Compound Gauge. Electrical
Tester and General Tools. − Remove the foreign particles and substances from the water piping, without going
through the water coolers and clearing the water strainer filter before running. Check to ensure that no foreign particle and substance exists in the water piping.
7.2. Test Running
Test running should be performed as follows:1. Fully open the liquid lined stop valve on chiller.
2. Switch on Main Switch (M.I.) to electrical power supply.
3. Check that compressor fuses are not blown. Check that also fuses protecting power fans and control circuit are not blown.
4. Check correct phase connection. Each rotation direction of two rotors in the compressor is fixed so that a reversal phase protection device is equipped. However, the rotation direction should be checked as follows: Confirm that phases R/L1, S/L2 and T/L3 are correctly connected. If not, the compressors do not start due to the activation of the reverse phase protection in chiller control. Switch off electrical power into the power supply cables and exchange two of the three phases on the Main Switch terminals at the field connection side of the unit.
5. Switch on the field-supplied water pump. Check the correct pump operation.
6. Check to ensure that the chilled water flows sufficiently.
7. Operate other auxiliary equipment such as fan coil units and air handling units and check they operate properly.
8. Compressor oil should be heated before compressor starting. Keep 12h compressor crankcase heater operating before compressor starting every time after long time of chiller power off.
9. Set the desired water temperature on the LCD.
10. Depress the “ON” push button. The condenser fans will start to operate and the compressor will be started. (The minimum and standard starting delay time is 3 minutes, for more delay check Chapter 8).
11. Check the rotation direction of the condenser fans.
12. Check to ensure that the water temperature control works properly.
13. Check to ensure that the control and protection devices work properly.
7.3. Instructions After Test Running
When the test running is completed, please instruct customers about operation and periodic maintenance methods before leaving the unit, by using this manual. A special attention is required to the following caution:
CAUTION:Do not cut off the power source switch during the operating season. When the power source switch is cut off, the oil heater for screw compressor is not energised, and the compressor might be damaged due to oil foaming at starting.When the operation season starts after long disconnection of the power source switch, please turn on the power source switch 12 hours before starting operation.
CAUTION:Switch On the main power switch, and energise the oil heater for 12 hours before start-up, to sufficiently warm the oil.Check to ensure that valves are correctly opened. If not opened, serious damage will occur to the compressor due to an abnormally high pressure.
DANGER:Switch OFF main interruptor (M.I) for any work inside Electrical Box.
CAUTION:When the unit is wired according to the HITACHI standard wiring shown on the wiring label. Switch ON the main power switch, and energise the oil heater for 12 hours before start-up to sufficiently warm the oil.
NOTE:A loud sound occurs when this compressor is stopped after the normal operation. However, this sound indicates no abnormalities and stops within a few seconds by the activation of the check valve. This sound is due to the reverse rotation of the screw rotors, resulting from the pressure difference between the discharge and the suction pressure.Each compressor may show the different valves of running current due to individual capacity control for each compressor. This is not abnormal.
Controller Adjustment
Technical Catalogue
8
8. C o n t r o l l e r A d j u s t m e n t
59TCGB0054-rev0-08/2010
Contents
8. Controller adjustment ..................................................................................................598.1. Control System ........................................................................................................................................ 60
8.1.1. Capacity Control........................................................................................................................................... 608.1.2. Control Panel ............................................................................................................................................... 608.1.3. Control Structure .......................................................................................................................................... 68
8.2. Control Adjustment .................................................................................................................................. 69
8.2.1. Unit Factory Settings .................................................................................................................................... 698.2.2. Unit Configuration Details ............................................................................................................................ 71
Controller Adjustment
Technical Catalogue
TCGB0054-rev0-08/201060
8.1. Control SystemElectrical Operation Controls of HITACHI Water Chillers are as follows.
8.1.1. Capacity Control
All models are equipped with an unloading system for each compressor, in order to adjust the cooling capacity and to provide precise temperature control for the chilled water, coupled with electronic thermostats.
Electrical Operation Controls advanced HITACHI Water Chillers are as follows.
Wat
er o
utle
t tem
pera
ture
Hitachi Continuous Capacity Control
Continuous Control
Load up 1
Load up 2
Neutral band
Check Water Control Configuration parameters on Chapter 8.2
8.1.2. Control Panel
¡ Operation buttons and lamps
ON switch, OFF switch, Power Supply Lamp, Operation Lamp, Alarm Lamp, Operation/Alarm Indicator for each refrigerant cycle and check switch are mounted in the Control Panel. The Control Panel is located at a position where easy access is available.
Time
Controller Adjustment
Technical Catalogue
8
61TCGB0054-rev0-08/2010
¡ LCD (Liquid Control Display)
Operation and configuration unit data can be checked in LCD
Initial Screen
(2 sec.)
Initial Screen
(1 sec.)
Initial Screen
2010.03.10 20:15
PUMP STATEUNIT STATECOOLINGLOCAL
MENU W Temp Set OP. Info
STOPSTOP
<OP Info>
<W Temp Set>
<MENU>
OP. Info Screen
W Temp Set Screen
Menu Screen
Initial Screen
< 8 > <MENU>
MENU
SETTING UNIT INFO ALARM LOG CAUTION LOG
Bilingual SERVICE MENU
<SETTING>
<CAUTION LOG>
<UNIT INFO>
<ALARM LOG>
<BILINGUAL>
<SERVICE MENU>
Setting Screen
Unit Info Screen
Alarm Log Screen
Caution Screen
Bilingual Screen
Service Menu Screen
Controller Adjustment
Technical Catalogue
TCGB0054-rev0-08/201062
MENU
< 8 ><SETTING>
Setting Screen
W Temp Set CT Set
Optional Function
Optional Function Screen
< 8 > <W Temp Set>
W Temp Set Screen 1/3 CT Set Screen
CW OUTTemp Set
12.0º C
SET
0 A 30 min
No. 1CT Time
No. 1CT Set
SET
< t > < t >
W Temp Set Screen 2/3Modify Data:
or + SETON/OFF Dif
2º C 2º C 1º C 1º C
N.Zone BandStop Temp Band
Load Up 2 Band
< t >
W Temp Set Screen 3/3
Load Up 1Time
10 sec
SET
2 sec 2 sec 30 sec
Load Up 2Time
Load DownTime
Interval
<Optional Function>
<CT Set>
< 8 >
Controller Adjustment
Technical Catalogue
8
63TCGB0054-rev0-08/2010
Setting Screen
< 8 > <Optional Function>
Optional Function Screen 1/4
SET
Temp. Disp.
Disable Pulse Enable
DC24V Input
RemoteON/OFF
PeriodicPump OP.
Enable
< t > < u >
Optional Function Screen 2/4
ON
Pump OP. in ON/OFF Cont.
Pump Feed Back Waiting Time
1 minUnlimited
< t > < u >
Optional Function Screen 3/4
Amb TempAdjustment
Min Cap. Limit
2 StepTH OFF
DisableDisableDisable
< t > < u >
Optional Function Screen 4/4
TH OFFCW IN Temp
NO 12.0ºC Modify Data: or + SET
< 8 >
Controller Adjustment
Technical Catalogue
TCGB0054-rev0-08/201064
MENU
< 8 > <UNIT INFO>
Unit Info Screen 1/8 Unit Info Screen 8/8
No. 1 Cycle
STOP
ROM No. LCD: 1272 CPU: 0034
FAN Statusfor FAN No.5 for FAN No.6
No Connectionfor FAN No.8for FAN No.7
No Connection
No Connection No Connection
< t > < No. 1 Cycle > < u > < t >
Unit Info Screen 2/8 Unit Info Screen 7/8
CW IN Temp 999.9ºC
Ta 999.9ºC
OP. Load 0%
Order FAN Hz
0 HzRear Side
0.0ºCPipe Side 999.9ºC
CW OUT Temp
FAN Statusfor FAN No.2No Connectionfor FAN No.4No Connection
for FAN No.1No Connectionfor FAN No.3No Connection
< t > < u > < u > < t >
Unit Info Screen 3/8 Unit Info Screen 6/8
Temp Liquid
0.0 ºC
T Cooler IN
0.0ºCTs
0.0ºC
Td
0.0ºC
Pd
0.00 MPa
Ps
0.00 MPa
TdSH
0.0 ºC
TdºSH
0.0 ºC
Load Order
Min Cap.LimitNO
< t > < u > < u > < t >
Unit Info Screen 4/8 Unit Info Screen 5/8
Exp V PulseMain 10 Pulse
Main 20 Pulse
Economizer0 Pulse
Cooler BP0 Pulse
Forced L. -
Night ShiftNO
Protec. Cont. Status
< u >
COMP Hr COMPCurrent
0 A MAIN: 0000SUB: 0000
ROM No.
Period0.0 Hr
Start Freq.0cnt
Accum0.0 Hr
< u >
< 8 >
Controller Adjustment
Technical Catalogue
8
65TCGB0054-rev0-08/2010
MENU
< 8 > <ALARM LOG>
Alarm Log Screen 1/5 Alarm Log Screen 5/8
No . 10 No . 9 0000.00.00 00:00 0000.00.00 00:00
< u >
No . 2 No . 1 0000.00.00 00:00 0000.00.00 00:00(...)
< u >
MENU
< 8 > <CAUTION LOG>
Caution Log Screen 1/5 Caution Log Screen 5/5
No . 10 No . 9 2000.00.00 00:00 2010.03.10 20:19
Failure of AmbTemp THM (CN6)
CPU-I/O PCBTransM Error
< u >
No . 2 No . 1 2000.00.00 00:00 2010.02.11 00:38
CPU-I/O PCBTransM Error
Failure of AmbTemp THM (CN6)
(...)
< u >
MENU
< 8 > <BILINGUAL>
Bilingual Screen
Bilingual
EnglishModify Data:
or + SET
< 8 >
< 8 >
Controller Adjustment
Technical Catalogue
TCGB0054-rev0-08/201066
MENU
< 8 > <SERVICE MENU>(only first time)
Password Screen (only the first time)
1 2 3
4 5 AC
0
DEL
6
7 8 9Input PasswordPassword
To enter in the Service Menu, please contat to HITACHI Costumer Service
Initial Screen
< 8 > <W Temp Set>
W Temp Set Screen 1/4 W Temp Set Screen 4/4
CW OUT Temp Set
12.0ºC
< u >
Load Up 1 Time
Load Up 2 Time
Load Down Time
Interval
30 sec2 sec2 sec10 sec(...)
< u >
Modify Data: or + SET
Controller Adjustment
Technical Catalogue
8
67TCGB0054-rev0-08/2010
Initial Screen
< 8 > <OP. Info>
OP Info Screen
No. 1 cycle
STOP
< 8 > <Nº.1 Cycle>
OP Info - No. 1 Cycle Screen 1/2
Ta999.9ºC
CW IN999.9ºC
Pd0.00 WPa
Td 0.0ºC
Ts 0.0ºC
Ps0.00 Mpa
CW OUT999.9º C
Op. Load 0%
< t >
OP Info - Nº. 1 Cycle Screen 2/2
COMP HrAccum 0.0 Hr
Period 0.0 Hr
COMP Current 0 A
< 8 >
Controller Adjustment
Technical Catalogue
TCGB0054-rev0-08/201068
8.1.3. Control Structure
Printed Circuit BoardA micro-processor, relays and electronic components are mounted on the Printed Circuit Board. Increased reliability is assured due to the elimination of mechanical parts and wires. This board contains various functions by applying micro-processor as follows:
− Screw Compressor Cycling Protection Circuit. The electronic timer of the screw compressor cycling protection (ccp) connected in the compressor control circuit delays the screw compressor restarting period for approximately three (3) minutes for No.1 compressor and four (4) minutes for No.2 compressor.
− Electronic Expansion Valves and Variable Fan Speed Control. This series include electronic expansion valves control and variable fan speed motor for better performance and efficiency.
− Electronic Thermostat Circuit. The electronic thermostat senses chilled water outlet temperature, and operate capacity control solenoid valves of HITACHI screw compressor.
− Screw Compressor Reversing Protection Circuit. This circuit is composed of a reverse-phase protection device, preventing reverse operation of the screw compressor, because the screw compressor definitely cannot be operated in the wrong direction due to the misconnection of the main power phases.
− Restart after Power-Failure. In case that a power failure shorter than 2 seconds occurres, compressors can be restarted automatically within 3 minutes after power supply.
Controller Adjustment
Technical Catalogue
8
69TCGB0054-rev0-08/2010
8.2. Control Adjustment
¡ Switch Position Table
SWITCH POSITION
ONOFF ON
ONOFF OFF
8.2.1. Unit Factory Settings
Table 1
MODELSTANDARD SETTING PCBa
(DSW 1) (DSW 2) (DSW 3) (DSW 4) (DSW 5) (DSW 6) (RSW 1)
RCUE 180AG2B
RCUE 210AG2B
RCUE 240AG2B
RCUE 280AG2B
RCUE 320AG2B
RCUE 350AG2B
RCUE 400AG2B
RCUE 450AG2B
Table 2 Table 3 Table 4
MODELSTANDARD SETTING PCBe
MODELSTANDARD SETTING PCBc
MODELLCD
(DSW2) (DSW200) (DSW7) (DSW8) (DSW9) CT
PCBe n1 RCUE 180AG2B RCUE 180AG2B 279
PCBe n2 RCUE 210AG2B RCUE 210AG2B 336
PCBe n3 RCUE 240AG2B RCUE 240AG2B 376
PCBe n4 RCUE 280AG2B RCUE 280AG2B 228
PCBe n5 RCUE 320AG2B RCUE 320AG2B 241
PCBe n6 RCUE 350AG2B RCUE 350AG2B 279
PCBe n7 RCUE 400AG2B RCUE 400AG2B 336
PCBe n8 RCUE 450AG2B RCUE 450AG2B 376
Controller Adjustment
Technical Catalogue
TCGB0054-rev0-08/201070
Table 5
MODELSTANDARD SETTING PCBd1 STANDARD SETTING PCBd2
(DSW 1) (DSW 2) (DSW 3) (DSW 1) (DSW 2) (DSW 3)
RCUE 180AG2B
ON
ON
ON
__ __ __
RCUE 210AG2BON
__ __ __
RCUE 240AG2BON
____
__
RCUE 280AG2BON
ON
ON
ON
RCUE 320AG2BON ON
RCUE 350AG2BON ON
RCUE 400AG2BON ON
RCUE 450AG2BON ON
Controller Adjustment
Technical Catalogue
8
71TCGB0054-rev0-08/2010
8.2.2.UnitConfigurationDetails
¡ PCBa Settings
Nº Dip Switch Description
Self checking mode
PSW1 PSW2
Consult to HITACHI Customer Service for self checking mode functions
High cut check
PSW3 PSW4
Fan stop for High Pressure cut checking
Manual defrost
PSW5 PSW6Manual defrost. Not available
Pump operation
SW1
ON
OFF
Manual Pump OperationStandard: OFF
Local/Remote changeover switch
SW2
LOCAL
REMOTE
Local/Remote Control:Standard: RemoteLocal: This mode allows unit ON/OFF from buttons in electrical box.
NOTE: OFF functions are available in both modes.
Cool/Heat changeover switch
SW3
COOL
HEAT
Cooling Mode: StandardHeating Mode: Not available
Controller Adjustment
Technical Catalogue
TCGB0054-rev0-08/201072
Nº Dip Switch Description
Manual set A
DSW1
Cycle 1 disabled Cycle 1 enabled
Cycle 2 disabled Cycle 2 enabled
~ Not available (DSW1-3, 4: All OFF)
Number of cycles configuration.
Pin Cycle PCB
1 1 cycle
2 2 cycles
H-Link address
Pin Address Pin Address
000 100
001 101
010 110
011 111
Manual set B
DSW2
Cooling only models Not available
Not available Continuous capacity control
Standard Not available
Standard Enabling Low Water Temperature Opt.
Standard Not available
Standard Not available
Refrigerant 407C Not available
Water Outlet temperature control Water Inlet temperature control
Air cooled Not available
Standard Not available
Master
Not available
Compressor starting delay:
DSW3
Pin Time
1 23 min. 3 min. option: Standard
1 26 min.
1 210 min.
1 230 sec. 30 sec. configuration is just for testing without
compressor connection
PIN 3: European power supply (ON, Standard)PIN 4: Not available
Controller Adjustment
Technical Catalogue
8
73TCGB0054-rev0-08/2010
Nº Dip Switch Description
Optional Function B:
DSW4
Low Water Temperature Opt. range:
Pin Tº
- 5 ºC
- 10 ºC
NOTE: Only available when DSW2-4 (PCBa) is ON.
Not available European models
Optional Function C:
DSW5
Power failure recovery Not available
Thermo OFF time setting Not available
Standard Not available
Remote control by H-LINK disabled (Only monitoring data allowed)
Remote control by H-LINK (To apply with H-LINK control devices)
Optional Function D:
1 2 3 4 5
DSW6
DSW6 not available
Controller Adjustment
Technical Catalogue
TCGB0054-rev0-08/201074
¡ PCBc Settings
Nº Dip Switch Description
External H-Link terminal set
DSW7
H-Link end resistance OFF (Standard)
H-Link end resistance ON
NOTE: Switch ON when using H-LINK devices
Standard H-Link fuse short-circuit
Internal H-Link terminal set
DSW8
H-Link end resistance OFF H-Link end resistance ON (Standard)
Standard H-Link fuse short-circuit
DSW9
DSW9 - Not available
Controller Adjustment
Technical Catalogue
8
75TCGB0054-rev0-08/2010
¡ PCBd Settings
Nº Dip Switch Description
DSW1
Disable DC Fan 1~8 Enable DC Fan 1~8
DSW2
Number of cycles configuration
Pin Cycle PCB Nº
1 1st. cycle
2 2nd. cycle
Unit Model
Pin Model Power Pin Model Power
N.A. 180/350
280 210/400
320 240/450
Not available European models
Other settings not available (DSW2-7~8: All OFF)
DSW3
Automatic expansion valve 1 (standard) Manual expansion valve 1
Automatic expansion valve 2 (standard) Manual expansion valve 2
Standard Not available
Automatic expansion valve 3 (standard) Manual expansion valve 3
Other settings not available (DSW3-6~8: All OFF)
Controller Adjustment
Technical Catalogue
TCGB0054-rev0-08/201076
¡ PCBEn Settings
Nº Dip Switch Description
DSW200
Address settings
Pin Address PCBe
01 1/5
03 2/6
05 3/7
07 4/8
DSW2
European Power supply (Standard configuration)
Controller Adjustment
Technical Catalogue
8
77TCGB0054-rev0-08/2010
¡ LCD Factory SettingsWater temperature configuration:
LCD Screen Description
W Temp Set (Screen 1)
CW OUTTemp Set
7.0º C
SET
Water temperature setting
Optional 2nd temperature setting
, . Not available
W Temp Set (Screen 2)
SETON/OFF Dif
2º C 2º C 1º C 1º C
N.Zone Band Stop Temp Band
Load Up 2 Band
Temperature band for compressor re-start
Neutral band
Temperature for thermo-OFF
Temperature band for Load Up 2 Mode
W Temp Set (Screen 3)
Load Up 1Time
10 sec
SET
2 sec 2 sec 30 sec
Load Up 2Time
Load DownTime
Interval
SV up frequency for Load Up Mode 1
SV up frequency for Load Up Mode 2
SV down frequency for Load Down Mode
Internal period for Load Mode
¡Watertemperaturecontrolconfiguration
Current Protection configuration:
LCD Screen Description
0 A 30 min
No. 1CT Time
No. 1CT Set
SET
Current sensor protection for cycle 1 (Check PCB Factory Settings table 4)
CT protection time for cycle 1
Current sensor protection for cycle 2 (Check PCB Factory Settings table 4)
CT protection time for cycle 2
Neutral band
Controller Adjustment
Technical Catalogue
TCGB0054-rev0-08/201078
Optional Functions configuration:
LCD Screen Description
Optional Function (Screen 1)
SETTemp. Disp.
Disable Pulse Enable
DC24VInput
RemoteON/OFF
PeriodicPump OP.
Enable
Water temperature displayed at Initial Screen
Input signal mode for remote control ON/OFF
Remote control mode
Periodical Pump operation in winter time at low ambient temperature.
Optional Function (Screen 2)
ON
Pump OP.in ON/OFF Cont.
Pump Feed Back Waiting Time
1 minUnlimited
Pump operation linked to chiller operation (TB terminals 3 and 4)
Pump feedfack signal
Time for pump feedback
Optional Function (Screen 3)
Amb TempAdjustment
Min Cap. Limit
2 StepTH OFF
DisableDisableDisable
Ambient temperature adjustment
Not available
Thermo off in 2 steps (for 2 cycles models only)
Optional Function (Screen 4)
TH OFFCW IN Temp
NO 12.0ºC
Additional thermo off condition by Water Inlet Temperature
Self-Inspection FunctionsTechnical Catalogue
9
9. S e l f - I n s p e c t i o n F u n c t i o n s
79TCGB0054 rev.0 - 08/2010
9. Self-Inspection functions .............................................................................................799.1. Alarm Screen ........................................................................................................................................... 80
9.2. Alarm Indication ....................................................................................................................................... 80
9.3. Normal Indication..................................................................................................................................... 82
9.4. Function for indication of operation condition .......................................................................................... 82
Contents
Self-Inspection Functions
Technical Catalogue
TCGB0054 rev.0 - 08/201080
9.1. Alarm ScreenIf the unit is operated under abnormal conditions, an alarm code (refer to the table below) is indicated and the LCD Alarms Screens. The "Alarm" lamp will be lighted and LCD Screen is lighted in red.
9.2. Alarm Indication7-Segment on PCBa shows the Alarm code as follows:
Self-Inspection FunctionsTechnical Catalogue
9
81TCGB0054 rev.0 - 08/2010
CodeContentNo.1
CycleNo.2Cycle
Activation of High Pressure Switch
Activation of Low Pressure Protection Control
Excessively Low Pressure
4 4 Activation of fan Internal Thermostat (Option)
5 5Activation of Thermal Relay for Compressor orMalfunction of Auxiliary Relay ARn
6 6 Activation of Discharge Gas Thermistor
7 7 Activation of Compressor Internal Thermostat
9 9 Excess Low Temperature of Cooler Inlet Refrigerant
t t Activation of Suction Gas Thermistor
03 03 Transmission Error between Main PCB and I/O PCB
05 05 Phase Abnormally
Failure of Water Outlet Thermistor (Only for 2 cycle unit)
3 3 Activation of Freeze Protection Control (More than 2 Cycle Unit)
4 4 Excessively High Water Temperature
Failure of Cooler inlet Refrigerant Thermistor (Open / Short)
3 3 Failure of Discharge Gas Thermistor (Open / Short)
4 4 Failure of Thermistor set before Expansion Valve
5 5 Failure of Water Outlet Thermistor (Rear side of Water Cooler)
6 6 Failure of Suction Gas Thermistor (Open / Short)
7 7 Failure of Discharge Gas Pressure Sensor (Open / Short)
8 8 Failure of Suction Gas Pressure Sensor (Open / Short)
f0 f0 Incorrect Setting of Fan Number
f f Fan Inverter Rotation Abnormally *1
f f Activation of Fan Inverter Over Current Protection Control *1
f3 f3 Fan Inverter Phase Abnormally *1
f4 f4Error Communication between Inverter PCB and Control or Fan Control PCB *1
f5 f5 Inverter Power Supply Abnormally *1
“”-”” : Flickering , *1 : Right side segment shows Fan No.
Self-Inspection Functions
Technical Catalogue
TCGB0054 rev.0 - 08/201082
CodeContentNo.1
CycleNo.2Cycle
00 Failure of Auxiliary Relay for starting.
0505 Phase Abnormally
0303Error Communication between Chiller and Remote Controller (If CSC-5S is connected.)
Failure of Water Inlet Temperature Thermistor
Failure of Water Outlet Thermistor. (Only for Single Cycle Unit)
33 Activation of Freeze Protection Control (Only for Single Cycle Unit)
44 Alarm of Excessively High Water Temperature
Failure of Ambient Temperature Thermistor (Open / Short)
5p5p No Feedback Signal from Water Pump
4040 Incorrect Operation
6e6eAlarm of Water Failure(Differential Pressure Switch or Flow Switch Option)
APAP Activation of Additional Protection Device
P5 P5 Retry Operation (by Alarm Cx-6x or Cx-7x, x: Cycle No.)
P6 P6 Retry Operation (by Alarm Cx-9x or Cx-Lx, x: Cycle No.)
FP7 fP7 Retry Operation (More Than 3 Fans Retry at The Same Time)
FP8 fP8 Retry Operation (by Alarm Fx-41 or Fx-51, x: Cycle No.)
“”-”” : Flickering , *1 : Right side segment shows Fan No.
9.3. Normal Indication
If the unit is operated under a normal operation condition, the operation code (refer to the table below) is indicated on 7-Segment LED’s of the control panel.
CodeContentNo.1
CycleNo.2Cycle
88 88 Power Supply, After Stoppage
Cooling Operation
f f Stoppage by Thermo-OFF
44 Pump Operation, Warning of Pump Feedback
t t Activation of Current Limiter
E0 E0 Initializing Electronic Expansion Valve
9.4. Function for indication of operation condition
The Control adjustments and the navigation into LCD are described in the Chapter 8.1.2.
Control System
Technical Catalogue
10
10. C o n t r o l S y s t e m
83TCGB0054 rev.0 - 08/2010
10. Control System ..........................................................................................................8310.1. Standard operation sequence RCUE180, 210, 240AG2B .................................................................... 84
10.2. Standard operation sequence RCUE280, 320, 350, 400, 450AG2B .................................................... 85
Contents
Control System
Technical Catalogue
TCGB0054 rev.0 - 08/201084
10.1. Standard operation sequence RCUE180, 210, 240AG2B
Con
trol
Sta
ge
Con
trol
Dev
ices
Star
ting
Con
trol
Cap
acity
Con
trol
Safe
ty D
evic
esSh
ut D
own
Mai
n P
ower
S
witc
hM
IO
FFO
N-
--
--
--
--
--
--
--
ON
ON
ON
OFF
Ope
ratio
n S
witc
hP
BS
--
ON
--
--
--
--
--
--
-O
FFO
NO
FF-
-
Con
trolle
rLo
ad U
p-
--
--
!!
--
--
-!
--
--
--
Neu
tral
--
--
--
-(
--
--
-(
-(
--
-Lo
ad D
own
--
--
--
--
!!
--
--
--
--
-S
afet
y D
evic
esN
o.1
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
OP
NC
LSC
LSC
LSC
LSC
LSC
hille
d W
ater
Pum
pC
PU
EO
FFO
FFO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
FFO
FFP
ower
S
uppl
y In
dica
tor
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
Ope
ratio
n In
dica
tor
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
ON
OFF
OFF
OFF
Ala
rm
Indi
cato
rO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
NO
FFO
FFO
FFO
FFO
FF
Oil
Hea
ter
CH
1O
FFO
NO
NO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
NO
FFO
FFO
FFO
FFO
NO
NO
FFO
NO
NO
FF
Com
pres
sor M
otor
MC
1S
TAD
LTD
LTD
LTD
LTD
LTD
LTS
TAD
LTD
LTS
TA/D
LTO
FFO
FFD
LTO
FFO
FFO
FF(U
LD)
(ULD
)(U
LD)
(FLD
)(F
LD)
(ULD
)(U
LD)
OFF
(ULD
)(U
LD)
(ULD
)(U
LD)
OFF
OFF
(ULD
)O
FFO
FFO
FF15
%15
%15
~99%
100%
100%
15~9
9%15
%15
%15
~99%
15~9
9%15
~100
%15
~99%
Fan
Mot
orM
F11~
14O
FFO
FFO
N
OFF
OFF
ON
OFF
OFF
OFF
Sol
enoi
d Va
lve
SV
11O
FFO
FFO
NO
NO
NO
FFO
FFO
FFO
FFO
FFO
NO
NO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFS
V12
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
SV
13O
FFO
FFO
FFO
FFO
FFO
NO
NO
FFO
FFO
FFO
FFO
FFO
NO
FFO
FFO
FFO
FFO
FFO
FFO
FFTi
me
Sch
edul
e
CLS
: Clo
seO
PN
: Ope
nS
TA: S
tar
DLT
: Del
taU
LD: U
nloa
dFL
D: F
ull L
oad
!: C
hang
ing
Com
pres
sor L
oad
(: K
eepi
ng C
ompr
esso
r Loa
d
3 m
in5
s
30 s
10 s
Min
imum
3 m
inut
es
10.2. Standard operation sequence RCUE280, 320, 350, 400, 450AG2B
Con
trol
Sta
ge
Con
trol
Dev
ices
Star
ting
Con
trol
Cap
acity
Con
trol
Safe
ty D
evic
esSh
ut D
own
Mai
n P
ower
S
witc
hM
IO
FFO
N-
--
--
--
--
--
--
--
--
-O
NO
NO
NO
FFO
pera
tion
Sw
itch
PB
S-
-O
N-
--
--
--
--
--
--
--
-O
FFO
NO
FF-
-
Con
trolle
rLo
ad U
p-
--
--
--
!!
--
--
-!
--
--
--
Neu
tral
--
--
--
--
-(
--
--
-(
-(
--
-Lo
ad D
own
--
--
--
--
--
!!
--
--
--
--
-
Saf
ety
Dev
ices
No.
1C
LSC
LSC
LSC
LSC
LSC
LSC
LSC
LSC
LSC
LSC
LSC
LSC
LSC
LSC
LSC
LSC
LSO
PN
OP
NC
LSC
LSC
LSC
LSC
LSN
o.2
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
CLS
OP
NC
LSC
LSC
LSC
LSC
LSC
hille
d W
ater
P
ump
CP
UE
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
Pow
er S
uppl
y In
dica
tor
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
Ope
ratio
n In
dica
tor
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
ON
OFF
OFF
OFF
Ala
rm In
dica
tor
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
Oil
Hea
ter
CH
1O
FFO
NO
NO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
NO
FFO
FFO
FFO
FFO
NO
NO
NO
FFO
NO
NO
FFC
H2
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
ON
ON
OFF
ON
ON
OFF
Com
pres
sor M
otor
MC
1O
FFO
FFO
FFS
TAD
LTD
LTD
LTD
LTD
LTD
LTD
LTD
LTO
FFS
TAD
LTD
LTS
TA/D
LTO
FFO
FFO
FFD
LTO
FFO
FFO
FF(U
LD)
(ULD
)(U
LD)
(ULD
)(U
LD)
(FLD
)(F
LD)
(ULD
)(U
LD)
(ULD
)(U
LD)
(ULD
)(U
LD)
(ULD
)15
%15
%15
%15
%15
~99%
100%
100%
15~9
9%15
%15
%15
~99%
15~9
9%15
~100
%15
~99%
MC
2O
FFO
FFO
FFO
FFO
FFS
TAD
LTD
LTD
LTD
LTD
LTD
LTO
FFS
TAD
LTD
LTS
TA/D
LTS
TA/D
LTO
FFO
FFD
LTO
FFO
FFO
FF(U
LD)
(ULD
)(U
LD)
(FLD
)(F
LD)
(ULD
)(U
LD)
(ULD
)(U
LD)
(ULD
)(U
LD)
(ULD
)(U
LD)
15%
15%
15~9
9%10
0%10
0%15
~99%
15%
15%
15~9
9%15
~99%
15~1
00%
15~1
00%
15~9
9%
Fan
Mot
orM
F11~
16O
FFO
FF
ON
O
FFO
FFO
FFO
NO
FFO
FFO
FFM
F21~
26O
FFO
FFO
N
OFF
OFF
ON
OFF
OFF
OFF
Sol
enoi
d Va
lve
SV
11O
FFO
FFO
NO
NO
NO
NO
NO
FFO
FFO
FFO
FFO
FFO
NO
NO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFS
V12
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
SV
13O
FFO
FFO
FFO
FFO
FFO
FFO
FFO
NO
NO
FFO
FFO
FFO
FFO
FFO
NO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFS
V21
OFF
OFF
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
SV
22O
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
NO
NO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFO
FFS
V23
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Tim
e S
ched
ule
CLS
: Clo
seO
PN
: Ope
nS
TA: S
tar
DLT
: Del
taU
LD: U
nloa
dFL
D: F
ull L
oad
!: C
hang
ing
Com
pres
sor L
oad
(: K
eepi
ng C
ompr
esso
r Loa
d
3 m
in5
s5
s
30 s
60 s
10 s
Min
imum
3 m
inut
esTh
e C
ompr
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r whi
ch s
tarte
d fin
ally
will
be
rest
arte
d fir
st
Maintenance
Technical Catalogue
11
11. M a i n t e n a n c e
TCGB0054 rev.0 - 08/2010 87
11. Maintenance ..............................................................................................................8711.1. Components .......................................................................................................................................... 88
11.2. Lubrication ............................................................................................................................................. 88
11.3. Deposit ................................................................................................................................................... 88
11.4. Cleaning Method .................................................................................................................................... 89
11.5. Winter Shutdown ................................................................................................................................... 91
11.6. Spring Start-Up ...................................................................................................................................... 91
11.7. Part Replacement .................................................................................................................................. 91
11.8. Refrigeration Cycle ................................................................................................................................ 91
11.9. Refrigerant Cycle Diagram Of Hitachi Air-Cooled Water Chiller (RCUE210, 280, 320, 400AG2B) ........................................................................................................ 92
11.10. Refrigerant Cycle Diagram Of Hitachi Air-Cooled Water Chiller (RCUE180, 240, 350, 450AG2B) with ECONOMIZER......................................................................... 93
11.11. Compressor Removal .......................................................................................................................... 94
11.12. Safety and protection control ............................................................................................................... 95
11.13. Normal Operating Pressure ................................................................................................................. 96
11.14. Test Running And Maintenance Record .............................................................................................. 97
11.15. Daily Operating Records ...................................................................................................................... 98
11.16. Servicing for R407C Refrigerant System ............................................................................................. 99
Contents
Maintenance
Technical Catalogue
TCGB0054 rev.0 - 08/201088
The unit should be periodically inspected according to the same items as those described in the paragraph titled“Test Running”. In order to ensure dependable performance and long life operation, the following additional items should be given for particular attention.
11.1. Components
¡ Compressor
The semi-hermetic screw compressor requires periodic maintenance, including replacement of parts. See the HITACHI Service Handbook for Screw Compressors, for details.
¡ Air-cooled Condenser
Inspect the condenser and remove any accumulated dirt from the coil, at regular intervals. Other obstacles such as growing grass and pieces of paper, which might restrict Air flow, should also be removed.
¡ Electrical Equipment
Always pay careful attention to working voltage, amperage and phase balance. Check for faulty contact caused by loosened terminal connections, oxidised contacts, foreign matter, and others.
¡ Control and Protective Devices
Do not readjust the settings in the field unless the setting is maintained at the point other than the point listed in the table on chapter 8.
11.2. Lubrication
¡ Compressor
The compressors are charged at the factory with the correct oil listed on the compressor nameplate. It is not necessary to add oil, if the refrigerant cycle remains sealed.
¡ Fan Motor
Bearing of all fan motors are pre-lubricated. Lubrication is not required.
11.3. DepositLime and other minerals in the chilled water tend to deposit on surfaces of plates over a long period of operation. As deposits of these minerals increase, excessive lower operation pressure are detected, indicating evidence of deposits on the water cooler.
CAUTION:Cleaning of plate type heat exchangers shall be performed by specialists. Please contact your contractor or dealer of HITACHI.Clean the water strainer filter periodically according to its clogging degree.
WARNING:This product is equipped with plate type heat exchangers. In the plate type heat exchanger, water flows through a narrow space between plates. Therefore, there is a possibility that freezing may occur if foreign particles or dust are clogged. In order to avoid this clogging, provide a 20 mesh water strainer at the inlet of the chilled water piping near to the product. If clogging in the plate type heat exchanger occurs seriously, this will cause insufficient cooling performance or local freezing in the plate type heat exchanger. It is strongly recommended that the heat exchanger is cleaned at the same time when the filter is cleaned.Pay attention to the following caution and normal cleaning method. For details, contact your Hitachi installer.
WARNING:If a fire accidentally occurs, turn OFF the main switch and use an extinguisher for an oil fire and an electric fire.Do not operate the unit near flammable gases such aslacquer, paint oil, etc. to avoid a fire or an explosion.Turn OFF the main switch when electrical box covers are removed for setting the temperature. Do not operate the unit without fixing panels.
DANGER:Switch OFF main interruptor (MI) for any work inside electrical box.Keep electrical box cover closed 2 min. after switching power off (to discharge the capacitors)
CAUTION:Perform periodical maintenance according to the “INSTRUCTIONS” to maintain the unit in a good condition.Do not touch the parts at the discharge gas side by hand, since the pipes at the discharge side are heated by refrigerant and the temperature becomes higher than 100 °C.Do not utilise this unit for cooling or heating of drinking water or food. Comply with local codes and regulations.Turn OFF all the main switches if refrigerant leakage or chilled water leakage occurs. Also, if the unit can not be stopped by the control switch, turn OFF all the switches for power source.
Maintenance
Technical Catalogue
11
TCGB0054 rev.0 - 08/2010 89
CAUTION:Correctly select cleaning agent depending on scales in the plate type heat exchangers. The cleaning chemicals are different depending on fouling degree.This plate type heat exchanger is made of stainless steel. Do not use a cleaning agent containing hydrochloric acid or fluorine compound. If used, the heat exchanger will be damaged, resulting in refrigerant leakage.After cleaning with cleaning agent, clean inside of water piping including the heat exchangers by using clean water. Perform water treatment (preventive treatment) in order to prevent the water circuit from corrosion or re-adhering of scales after cleaning.In the case that a cleaning agent is used, adjust concentration of the cleaning agent, cleaning period and temperature according to the scale degree.
In the case that acid cleaning is performed, neutralisation treatment is required after cleaning. Treatment for neutralisation fluid should be performed by a waste fluid contractors.The cleaning agent and neutralising agent have erosiveness and stimulativeness against eyes, skin, mucous membrane etc. Therefore use protection tools (protection glasses, protection gloves, protection shoes, protection cloth, protection mask, etc.) in order not to absorb or touch these agents during this cleaning work.
11.4. Cleaning Method
N° Name N° Name1 Chiller Unit 6 Waste Fluid Tank2 Chilled Water / Inlet Piping 7 Cleaning Water Tank3 Acid-resistant Type Water Pump 8 Hose4 Hose 9 Chilled Water / Outlet Piping5 Diluted Cleaning Fluid
Water Refrigerant
Maintenance
Technical Catalogue
TCGB0054 rev.0 - 08/201090
1. Installation of Cleaning Circuit
− Stop the water Chiller unit. − Stop the circulating water pump. − Disconnect the connections at the chilled water inlet and install a circulating water circuit by using an acid-
resistant type water pump.
2. Check of Circulating Circuit
− Pour water in the cleaning tank and operate the acid-resistant type water pump. − Check to ensure that no water leakage exists. − Check to ensure that the water hose is firmly fixed. − Check to ensure that the cleaning agent will not damage equipment near the water Chiller even if bubbles
occur and touch them. − Check to ensure that good ventilation is available. − Check to ensure that no abnormal sound occurs.
3. Cleaning Work
− Discharge water in the water circuit of the air conditioning system. − Supply diluted cleaning fluid from the cleaning water tank by operating the acid-resistant pump. − Circulate the cleaning fluid for an appropriate period of time (the operating time should be determined
according to the type of cleaning agent, concentration and fouling degree).
4. Waste Fluid
− Stop the acid-resistant pump. − Put the waste fluid into the waste fluid tank. − Supply water into the cleaning tank and operate the pump for water cleaning. − Put the cleaning water into the waste fluid tank as same as the waste fluid. − Measure pH degree by using a pH test sheet and neutralise the waste fluid by gradually adding neutralising
agent. − After neutralisation ask a waste fluid treatment contractors to handle it.
5. Neutralisation Treatment in the Water Piping
− Put water into the cleaning tank. − Operate the acid-resistant pump after Air-purging. − Measure the pH degree and gradually add neutralising agent until the pH reaches pH = 7. − Operate the pump for a specified period of time for neutralisation. − Discharge the used water. − Operate the circulating pump and clean the circuit with water until no fouling fluid is observed.
6. Re-starting
− Reconnect the water piping as they were so that the water Chiller can operate. − After cleaning, perform water treatment (preventive treatment) in order to prevent the water circuit from
corrosion.
N° Name1 Saturation Line of R407C2 Area Requiring Cleaning
Suc
tion
Gas
Pre
ssur
e
Chilled Water Outlet Temperature (ºC)
Maintenance
Technical Catalogue
11
TCGB0054 rev.0 - 08/2010 91
11.5. Winter ShutdownWhen shutting down the unit for winter, clean the inside and outside of the cabinet, and dry the unit. Pump down the refrigerant to the condenser and close the liquid outlet stop valves. This unit should be covered during shutdown, in order to protect it from dust and environmental conditions. Be sure to tighten the packing glands and the cap nuts of the valves.
Remove the drain plug and drain all residual water from the water cooler piping systems, as such water may freeze during the cold season. It is very helpful to supply brine (anti-freezer) to the piping systems.
11.6. Spring Start-UpAfter any extended shutdown period, prepare the unit for operation as follows.
1. Thoroughly inspect and clean the unit.
2. Clean the water piping lines and the strainer.
Inspect the pump and other auxiliary equipment in the piping line.
3. Tighten all wiring connections and access panel.
CAUTION:When the main switch for this unit has been at the OFF position for an extended period of time, it should be switched ON at least 12 hours before start-up, so that oil in the compressor discharge casing may be warmed enough, to prevent oil foaming by the oil heater during start-up.
11.7. Part ReplacementReplacement of parts should be undertaken by ordering from the HITACHI Spare Parts List.
CAUTION:Do not replace with spare parts which are not the equivalent.
11.8. Refrigeration Cycle
¡ Strainer
Check for clogging each time when the refrigeration cycle is opened.
¡ Refrigerant Charge
Inspect the refrigerant charge of the system by checking the discharge and suction pressures. Perform a leakage test, if any leakage is suspected, and always perform such a test after a refrigeration cycle component is replaced. When refrigerant charge is required, follow the following instructions given for two cases:
1. When Refrigerant Gas Completely Leaked. Before charging the entire cycle must be completely evacuated and dehydrated. A gauge manifold or equivalent piping preparation shown in the next page is recommended as a convenient procedure regarding both charging and evacuation.
- Fully open all the stop valves.
- Connect the evacuation line to the check joints of the high and the low pressure sides.
- Completely evacuate the entire cycle with a vacuum pump.
- Charge refrigerant to the refrigeration cycle by weighing the charging cylinder. The proper refrigerant charge is listed on the nameplate.
- When charging by weight is stopped due to high ambient temperature, close the valve and operate the unit after circulating the chilled water through the water cooler and installing a jumper on the low pressure switch, if required.
2. When Only Additional Refrigerant is Required. Connect a gauge manifold to check joint of low pressure side, and connect a charge cylinder to gauge manifold. Operate the unit after circulating the chilled water and install a jumper on the low pressure switch, if required. Repeat the following procedure until pressure becomes proper (refer to page 58).
- Charge the gas refrigerant a little slowly into refrigeration cycle from check joint for low pressure.
- Check the pressure after refrigeration cycle becomes stable.
Maintenance
Technical Catalogue
TCGB0054 rev.0 - 08/201092
11.9. Refrigerant Cycle Diagram of Hitachi Air-Cooled Water Chiller (RCUE210, 280, 320, 400AG2B)
Option
Option
Option
GaugeManifold
Flange ConnectionFlare ConnectionSolder ConnectionRefrigerant Cycle
Charging Evacuation
Unit side
Chilled water inlet
Chilled water outlet
Electrical box
Option
No. Name No. Name1 Compressor 16 Compressor Dual Safety Valve (Option)
2 Air-Cooled Condenser 17 Stop Valve
3 Water Cooler 18 Thermistor (Suction, THMsn)
4 Filter Drier 19 Thermistor (Discharge, THMdn)
5 Electronic Expansion Valve 20 Thermistor (Evaporation, THMr2n)
6 Check Valve 21 Thermistor (Cooler water inlet, THMwi)
7 Stop Valve 22 Thermistor (Cooler water outlet, THMwon)
8 High Pressure Switch 23 Thermistor (Cooler water outlet, THMwon1)
9 Pressure Sensor (Low) 24 Thermistor (Ambient, THMa)
10 Pressure Sensor (High) 25 Thermistor (Liquid, THMI)
11 Pressure Relief Valve A High Pressure Gauge
12 Sight Glass B Low Pressure Gauge
13 Compressor Safety Valve (Option) C Stop Valve
14 Stop Valve (Option) D Charging Cylinder
15 Stop Valve (Option) E Vacuum Pump
NOTE:R407C shall be charged by LIQUID.
Maintenance
Technical Catalogue
11
TCGB0054 rev.0 - 08/2010 93
11.10. Refrigerant Cycle Diagram of Hitachi Air-Cooled Water Chiller (RCUE180, 240, 350, 450AG2B) with ECONOMIZER.
Option
Option Option
GaugeManifold
Flange ConnectionFlare ConnectionSolder ConnectionRefrigerant Cycle
Charging Evacuation
Unit side
Chilled water inlet
Chilled water outlet
Electrical Box
Option
No. Name No. Name1 Compressor 19 Thermistor (Discharge, THMdn)
2 Air-Cooled Condenser 20 Thermistor (Evaporation, THMr2n)
3 Water Cooler 21 Thermistor (Cooler water inlet, THMwi)
4 Filter Drier 22 Thermistor (Cooler water outlet, THMwon)
5 Electronic Expansion Valve 23 Thermistor (Cooler water outlet, THMwon1)
6 Check Valve 24 Thermistor (Ambient, THMa)
7 Stop Valve 25 Thermistor (Liquid, THMI)
8 High Pressure Switch 26 Pressure Switch
9 Pressure Sensor (Low) 27 Solenoid Valve
10 Pressure Sensor (High) 28 Capillary Tube
11 Pressure Relief Valve 29 Economiser
12 Sight Glass 30 Strainer
13 Compressor Safety Valve (Option) 31 Silencer
14 Stop Valve (Option) A High Pressure Gauge
15 Stop Valve (Option) B Low Pressure Gauge
16 Compressor Dual Safety Valve (Option) C Stop Valve
17 Stop Valve D Charging Cylinder
18 Thermistor (Suction, THMsn) E Vacuum Pump
NOTE:R407C shall be charged by LIQUID.
Maintenance
Technical Catalogue
TCGB0054 rev.0 - 08/201094
CAUTION:Do not charge OXYGEN, ACETYLENE or other flammable and poisonous gases into the refrigeration cycle when performing a leakage test or an airtight test. These types of gases are extremely dangerous, because explosion can occur. It is recommended that compressed air or nitrogen is charged for these types of tests.Mineral deposits on water cooler plates act as thermal insulators, and also act as resistance against water flow, causing a decrease of the water flow running through them, and resulting in a decreasing of the cooling capacity. Deposits on the plates should be inspected at regular intervals. Experience with the water Chiller will dictate accurate inspection intervals. These deposits should be removed by circulating diluted acid through the water passes after the water has been drained. As water in different localities contains different minerals, different acids are required, depending upon the thickness of the deposits.This unit is equipped with an operation hour meter. In the case that the total operation time reaches 24,000 hours or 3 years pass after installation, exchange the bearings of the compressor. For details, refer to the Service Handbook for HITACHI Screw Compressors.For R407C refrigerant system, charge the refrigerant with liquid condition to avoid its composition change.
11.11. Compressor Removal
¡ When Removing the Compressor
Remove the compressor while completing the following procedures.
1. Collect all refrigerant into a condenser before this work.
2. Turn off the switch DSW3 of the PCB in the magnetic switch box in order not to operate the compressor except for the cycle.
3. Circulate the chilled water sufficiently through the water cooler, and operate the water Chiller for 10 minutes, and check to ensure that the oil level is maintained at a stable condition.
4. Stop the water Chiller and completely close the liquid stop valve.
5. Operate the water Chiller after circulating water through the water cooler.
6. Stop the water Chiller when the low pressure reaches at approximately 0.05 MPa. Do not operate at a pressure lower than 0.05 MPa. If operated, it will cause a damage to the compressor.
7. Wait for several minutes. If the low pressure increase up to 0.45 to 0.5 MPa, repeat the above procedures 5 and 6 four or five times.
8. Turn OFF the power supply to the unit.
9. After these works above, almost all refrigerant can be collected in the condenser.
10. Recover the rest of refrigerant from the water cooler and the compressor.
11. Remove the bolts on the discharge and suction flanges of the compressor.
12. Remove all the wiring of the compressor.
13. Remove the bolts fixing the compressor.
14. Remove the compressor.
NOTE:For removing the compressor a special kit is available under request. Contact Hitachi distributor.
Maintenance
Technical Catalogue
11
TCGB0054 rev.0 - 08/2010 95
11.12. Safety and protection controlThe safety and protective devices are equipped with the unit to ensure dependable and long life operation.Their functions should be carefully noted, and field adjustment is not recommended, if the setting is maintained at the point listed in the table.
¡ Compressor protection1. Fuse and thermal relay equipped in the control box cut out each compressor operation when the current to the compressor exceeds the setting2. The internal thermostat embedded in the motor winding cuts out each operation, when the temperature exceeds the setting3. The oil heater in the compressor prevents from oil foaming during cold starting. This heater warms the oil, while the compressor is stopped
¡ Refrigeration Cycle1. The high pressure switch and low pressure control protect against excessive discharge pressure and exceedingly low suction pressure. The switch and control cut out compressor operation when discharge pressure or suction pressure is abnormal.2. The pressure relief valve is equipped on discharge gas line. When high pressure exceeds the setting, gas refrigerant will be discharged to prevent abnormal high pressure
¡ Condenser Fan Motor ProtectionFuse and internal thermostat are equipped The internal thermostat embedded in fan motor winding cut out fan operation and compressor operation, when the temperature of the motor winding exceeds the setting
¡ Water CoolerPump interlock, freeze protection thermostat, low pressure control and suction gas thermostat can protect water cooler against water cooler freezing
Model RCUE – AG2B 180 210 240 280 320 350 400 450For Compressor High Pressure Switch Manual Reset, Non-Adjustable ( One Switch for Each Compressor Motor )
Cut - Out MPa 2,8 2,8 2,8 2,8 2,8 2,8 2,8 2,8 Low Pressure Control Control Electronic Control
Cut - Out MPa 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05Internal Thermostat for Compressor Manual Reset, Non-Adjustable ( One Switch for Each Compressor Motor )
Cut - Out °C 115 115 115 115 115 115 115 115Cut - In °C 93 93 93 93 93 93 93 93
Compressor Motor(380-415V / 50Hz) ( 3 Fuses for Each Compressor )
Fuse A 355 400 500 315 315 355 400 500Manual Reset, Adjustable ( One Three-Phase Set for Each Compressor Motor )
Thermal Relay A 187 220 248 157 167 187 220 248Manual Reset, Adjustable ( One Three-Phase Set for Each Compressor Motor )
Oil Heater ( One Heater for Each Compressor Motor ) Capacity W 150 150 150 150 150 150 150 150Discharge Gas TemperatureControl ( One for Each Circuit )
Cut - Out °C 140 140 140 140 140 140 140 140CCP Timer Non-Adjustable ( One Timer for Each Compressor Motor ) Setting Timer S 180 180 180 180 180 180 180 180 Star - Delta S 5 5 5 5 5 5 5 5 Unloading During Starting S 30 30 30 30 30 30 30 30For Control Circuit Fuse A 6 6 6 6 6 6 6 6For Refrigerant Circuit Pressure Relief Valve ( One for Each Circuit )
Setting Pressure MPa 3 3 3 3 3 3 3 3Freeze Protection Control ( One for Each Water Cooler )
Cut - Out °C 2 2 2 2 2 2 2Fan Motor (380-415V / 50Hz) ( 3 Fuses for Each Circuit ) Fuse A 32 40 40 32 32 32 40 40
( One Fuse for Each Fan ( Both DC Fan and AC Fan ) ) Fuse A 12,5 12,5 12,5 12,5 12,5 12,5 12,5 12,5
Manual Reset, Adjustable ( One Protector for Each Fan ( Both DC Fan and AC Fan ) )
Maintenance
Technical Catalogue
TCGB0054 rev.0 - 08/201096
11.13. Normal Operating Pressure
Check to ensure that Chiller is operating within the working range as shown below, after at least 15 minutes operation.
Standard Working Range
Chilled Water Outlet Temperature (ºC)
Condenser Air Inlet Temperature (ºC)
Suc
tion
Gas
Pre
ssur
e D
isch
arge
Gas
Pre
ssur
e
Standard Working Range
Conditions:-Compressor: 100% Load-Condenser Fans: 12 or 16 fans
running each cycle
CAUTION:Periodical MaintenancePerform periodical maintenance according to the “INSTRUCTIONS” to maintain the unit in a good condition.FireIf a fire accidentally occurs, turn OFF the main switch and use an extinguisher for an oil fire and electric fire.Flammable GasesDo not operate the unit near the flammable gases such as lacquer, paint, oil, etc. to avoid a fire or an explosion.Service Panels and Electrical Box CoverTurn OFF the main switch when service panels or electrical box covers are removed for setting the temperature. Do not operate the unit without fixing panels.Heated PipeDo not touch the parts at discharge gas side by hand, since the pipes at the discharge side are heated by refrigerant and temperature becomes higher than 100ºC.UseDo not utilise this unit for cooling of drinking water or food. Comply with local codes and regulations.FailureTurn OFF all the main switches if refrigerant leakage or chilled water leakage occurs. Also, if the unit can not be stopped by the control switch, turn OFF all the switches for power source.Activation of Safety DeviceIn the case that one of safety devices is activated and unit is stopped, remove the cause of the stoppage and restart the unit. The protection devices are utilised to protect the unit from an abnormal operation. Therefore, if one of safety devices is activated, remove the cause by referring the “Troubleshooting” in the “INSTRUCTION” or call the local agency.FuseUtilise a fuse with specified capacity. Do not use a steel wire or a copper wire instead of a fuse. If an incorrect wire is utilised, a serious accident such as a fire will occur.Safety DevicesDo not make a short-circuit at the protection line. If a short-circuit is made, a serious accident will occur.Setting of Safety devicesDo not change the setting of safety devices, if changed, a serious accident will occur. Do not touch any electrical parts except for the operation switches during the operation. Do not press the button on the magnetic switch. If pressed, a serious accident will occur.
NOTE:For removing the compressor a special kit is available under request. Contact Hitachi distributor.
Maintenance
Technical Catalogue
11
TCGB0054 rev.0 - 08/2010 97
11.14. Test Running And Maintenance Record
MODEL: RCUE MFG. NO.
COMPRESSOR MFG. NO.
CUSTOMER NAME AND ADDRESS DATE
Is there adequate water flow for the water cooler?
Has all water piping been checked for leakage?
Has the unit been operated for at least twenty minutes?
Check Ambient Temperature:
ºC
Check Chillerd Water Temperature:
Inlet ºC Outlet ºC
Check Water Flow:
m3/h
Check Suction Line Temperature and Superheat:
Suction Line Temperature ºC ºC ºC ºC
Superheat deg deg deg deg
Check Pressure:
Discharge Pressure MPa MPa MPa MPa
Suction Pressure MPa MPa MPa MPa
Check Running Current:
A A A A
Check Voltage for System:
R-S, S-T, T-R= V V V
Has the unit been checked for refrigerant leakage?
Is the unit clean inside and outside?
Are all cabinet panels free from rattling?
Maintenance
Technical Catalogue
TCGB0054 rev.0 - 08/201098
11.15. Daily Operating Records
Model:
Date:
Weather:
Time of Operation : Start, Stop. (Operation hour: )
Sampling Time
Compressor Number
Term
Ambient Temperature DB ºC
WB ºC
Compressor High Pressure MPa
Low Pressure MPa
Voltage V
Current A
Chiller Water Temperature Inlet ºC
Outlet ºC
Current for Chilled Water Pump A
NOTES:
Maintenance
Technical Catalogue
11
TCGB0054 rev.0 - 08/2010 99
11.16. Servicing for R407C Refrigerant System
¡ Refrigerant
This R407C refrigerant is HFC type so that it has a feature of no ozone depletion. If it is mixed with another refrigerant, the serious changing would occur on its character. Therefore notice the following point when handling this refrigerant.
1. Charge the refrigerant in LIQUID condition and NOT in GAS. As “R407C” is geotropic mixed refrigerant, if gas charging is performed, only the easy vaporising refrigerant would be charged into the system and the difficult vaporising one would be remained in the charge cylinder.
The cylinder, gauge equipped manifold and charge hose are only used for R407C refrigerant.
Adjust the cylinder setting to charge in liquid.
¡ Refrigerant Oil
UX300, which R407C refrigerant is easy to blend into it, is used for this system. The other oil is prohibited to use, so that not to be mixed with another kind of oil at the maintenance and service work. This oil is very hygroscopic.
Therefore minimum humidity handling is necessary.
¡ Servicing Equipment
When servicing R407C system, servicing equipment such as Charging Cylinder, Charging Hose, Vacuum Pump and so on, shall not be mixed with R22 equipment to avoid R407C composition change.
Troubleshooting
Technical Catalogue
12
12. Tr o u b l e s h o o t i n g
TCGB0054 rev.0 - 08/2010 101
12. Troubleshooting .......................................................................................................10112.1.Procedures for trouble .......................................................................................................................... 102
Contents
Troubleshooting
Technical Catalogue
TCGB0054 rev.0 - 08/2010102
12.1.Procedures for trouble
¡ The following table shows efficient checking procedures for trouble.
Fault Possible Cause Check/Corrective Action
Condenser Fan Does Not Operate
Current to Unit is Shut Off 1. Reset the power supply line to the unit.
Fuse for Operation Circuit is Blown Out or Faulty Contact
1. Check for shorted components.2. Check for loose connection. Tighten or
replace. If necessary.Contactor Holding Coil is Burned Out or Faulty Contact 1. Find the causes, and repair or replace.
Tripped Overcurrent Relay 1. Remove the causes, and reset the overcurrent relay.
Low Voltage 1. Check the voltage of unit rating.
Shorted Motor or Terminals. 1. Check the motor and terminals. Repair or replace, if necessary.
Compressor Does Not Operate
Condenser Fan is Not Operating 1. Remove all causes of inoperative fan.
Interlock Circuit for Chilled Water Pump is Open1. Check the pump contactor. Repair or replace, if
necessary.2. Check for the faulty pump.
Electrical Protective Devices Are Tripped. 1. Remove the causes, and reset the “ON” button. See the following causes.
Incorrect Wiring Connection for Compressor Power Source
1. Interchange two of three terminals R, S and T at the main power source terminals.
Compressor Stops on High Pressure Switch
Excessively High Discharge Pressure 1. See “High Discharge Pressure”
Malfunction of High Pressure Switch 1. Readjust the setting or replace, if defective.
Compressor Stops on Overcurrent Relay
Excessively High Discharge Pressure and Suction Pressure
1. See “High Discharge Pressure” and “High Suction Pressure”.
High or Low Voltage, Single-Phase or Phase Imbalance
1. Check the power supply line and contactors. Repair, if necessary.
Loose connection 1. Tighten the loose electrical connection or repair, if necessary.
Faulty Compressor Motor 1. Check the compressor motor. Repair or replace, if necessary.
Faulty Overcurrent Relay 1. Replace it, if necessary.
Troubleshooting
Technical Catalogue
12
TCGB0054 rev.0 - 08/2010 103
¡ The following table shows efficient checking procedures for trouble.
Fault Possible Cause Check/Corrective Action
Compressor Stops on Freeze Protection Control.
Excessively Low Chilled water Outlet Temperature 1. Check for excessively low setting of the chilled water setting knob.
Defective Thermistor 1. Check for malfunction of the thermistor. Replace, if necessary.
Shortage of Chilled Water Flow 1. Check the rotation of the pump.
Air in water Circuit 1. Purge air.
Compressor Stops on Internal Thermostat or Discharge Gas Temperature Control.
High or Low Voltage, Single-Phase or Phase Imbalance
1. Check the power supply line and contactor. Repair, if necessary.
Excessive Superheat 1. Check for refrigerant leakage.
Defective Element 1. Check the contact of the internal thermostat during the cold condition.
Excessive High Discharge Pressure and Low Suction Pressure
1. See “High Discharge Pressure” and “Low Suction Pressure”.
Insufficient Cooling
High Discharge Pressure or Low Suction Pressure 1. See “High Discharge Pressure” and “Low Suction Pressure”.
Improper Thermostat Setting 1. Readjust the setting.
Defective Unload Mechanism 1. Adjust unload mechanism. Repair or replace unloaded parts, if necessary.
Noisy CompressorSlugging Due to Liquid Flooding Back to Compressor
1. Check the superheat of suction gas. Check the position of Expansion Valve coil. Repair or replace if necessary.
Worn parts 1. Check for the sound of internal parts. Replace the compressor, if necessary.
Miscellaneous Noise Loose Fixed Screw 1. Tighten the screws of all parts.
Unloaded Does not Function
Trouble with the Thermistor 1. Adjust the setting temperature.2. Replace the thermistor.
Trouble with the Solenoid Valve 1. Check the coil in the solenoid valve.2. Check oil passage for clogging.
Worn Unloader Mechanism 1. Check the unloaded system parts in the compressor.
High Discharge Pressure
High Condenser Air Temperature or Insufficient Air Flow Through the Condenser
1. Check the fan operation.2. Check for coil clogging; clean, if necessary.
Defective Check Valve or partially Closed Liquid Line Valve
1. Check the valves and strainer. Replace, if necessary.
Overcharged Refrigerant 1. Adjust the refrigerant quantity.Air or Non-Condensable Gas in the Refrigerant Cycle. 1. Purge the gas from the refrigerant cycle.
Suction Pressure is Higher than Standard 1. See “High Suction Pressure”.
Low Discharge Pressure
Extremely Cold Condenser Air 1. Check the ambient Temperature.
Insufficient Refrigerant Charge 1. Add Refrigerant.
Leakage from the Compressor Discharge Valve 1. Replace the valves. Replace the compressor, if required.
Suction Pressure is Lower than Standard 1. See “ Low Suction Pressure”
High Suction PressureHigh Inlet Temperature of Chilled Water 1. Check the insulation of the piping.
2. Check the installation specifications.
Excessive Opening of Expansion Valve 1. Check the position of Expansion Valve coil, or replace, if defective.
Low Suction Pressure
Low Inlet Temperature of Chilled Water 1. Check the installation specifications.
Improperly controlled Expansion Valve or Faulty Valve
1. Check the position of Expansion Valve coil. Repair or replace, if necessary.
Insufficient Refrigerant Charge 1. Add Refrigerant.
Excessive Oil in the Water Cooler 1. Purge Oil.
Scales on Water Cooler Plates 1. Clean the plates.
General SpecificationsTechnical Catalogue
13
13. G e n e r a l S p e c i f i c a t i o n s
TCGB0054 rev.0 - 08/2010 105
13. General Specifications.............................................................................................10513.1. General Data ....................................................................................................................................... 106
13.2. Options ................................................................................................................................................ 108
Contents
General Specifications
Technical Catalogue
TCGB0054 rev.0 - 08/2010106
13.1. General Data
Model RCUE180AG2B RCUE210AG2B RCUE240AG2B RCUE280AG2B
Electrical Power Supply - 3N~ 400V 50Hz
Cooling Capacity kW 439 528 583 742
Total Power Input kW 151 182 201 252
EER - 2.91 2.90 2.90 2.94
ESEER 3.70 3.69 3.69 3.74
Outer Dimension
Height mm 2,430 2,430 2,430 2,430
Width mm 1,950 1,950 1,950 1,950
Depth mm 5,420 6,620 6,620 10,560
Cabinet Colour - Natural Grey (Munsell code 1.0Y8.5/0.5)
Net Weight kg 3,850 4,400 4,550 7,200
Compressor Type - Semi-Hermetic Screw Type
Models - 130ASCA-Z 170ASCA-Z 170ASCA-Z 130ASCA-Z
Quantity - 1 1 1 2
Oil Heater W 150 150x2
Capacity Control- Continuous Capacity Control
% 15 ~ 100
Water Cooler Type - Brazing Plate Type
Condenser Type - Multi-Pass Cross Finned Tube
Fan Motor (pole) kW 0.38 (8)
Quantity - 12 16 16 24
Refrigerant Type - R407C
Flow Control - Electronic Expansion Valve
Number of Independent Circuits - 1 1 1 2
Oil Type - UX300
Water pipe Connection - 4” Victaulic (1xInlet / 1xOutlet) 4” Victaulic (2xInlet / 2xOutlet)
Control System - Micro-Processor Control
Control Display - LCD
Chilled Water Outlet Temperature °C (-10) 5 ~ 15
Condenser Air Inlet Temperature °C -15 ~ 46
Permissible Water Pressure Max. MPa 1.0
Safety and Protection Devices -
Reverse Phase Protection, Fuse and Thermal Relay for Compressor, Internal Thermostat for Compressor, Compressor Oil Heater, Fuse and Internal Thermostat for Fan Motor, Control Circuit Fuse, High Pressure Switch, Low Pressure Control, High Pressure Relief Valve, Discharge Gas Temperature Control, Suction Gas Temperature Control, Freeze Protection Control and Compressor Operation Hour Meter.
NOTE:The nominal cooling capacities are based on the European Standard EN14511.- Chilled Water Inlet/Outlet Temperature : 12/7 °C- Condenser Inlet Air Temperature: 35 °C
General SpecificationsTechnical Catalogue
13
TCGB0054 rev.0 - 08/2010 107
Model RCUE320AG2B RCUE350AG2B RCUE400AG2B RCUE450AG2B
Electrical Power Supply - 3N~ 400V 50Hz
Cooling Capacity kW 801 878 1056 1166
Total Power Input kW 265 302 364 402
EER - 3.02 2.91 2.90 2.90
ESEER 3.84 3.70 3.69 3.69
Outer Dimension
Height mm 2,430 2,430 2,430 2,430
Width mm 1,950 1,950 1,950 1,950
Depth mm 10,560 10,560 12,960 12,960
Cabinet Colour - Natural Grey (Munsell code 1.0Y8.5/0.5)
Net Weight kg 7,450 7,600 8,600 8,950
Compressor Type - Semi-Hermetic Screw Type
Models - 130ASCA-Z 130ASCA-Z 170ASCA-Z 170ASCA-Z
Quantity - 2 2 2 2
Oil Heater W 150×2
Capacity ControlStep Continuous Capacity Control
% 15 ~ 100
Water Cooler Type - Brazing Plate Type
Condenser Type - Multi-Pass Cross Finned Tube
Fan Motor (pole) kW 0.38 (8)
Quantity - 24 24 32 32
Refrigerant Type - R407C
Flow Control - Electronic Expansion Valve
Number of Independent Circuits - 2 2 2 2
Oil Type - UX300
Water pipe Connection - 4” Victaulic (2×Inlet / 2×Outlet)
Control System - Micro-Processor Control
Control Display - LCD
Chilled Water Outlet Temperature °C (-610) 66755 ~ 15
Condenser Air Inlet Temperature °C -15 ~ 46
Permissible Water Pressure Max. MPa 1.0
Safety and Protection Devices -
Reverse Phase Protection, Fuse and Thermal Relay for Compressor, Internal Thermostat for Compressor, Compressor Oil Heater, Fuse and Internal Thermostat for Fan Motor, Control Circuit Fuse, High Pressure Switch, Low Pressure Control, High Pressure Relief Valve, Discharge Gas Temperature Control, Suction Gas Temperature Control, Freeze Protection Control and Compressor Operation Hour Meter
NOTE:The nominal cooling capacities are based on the European Standard EN14511.- Chilled Water Inlet / Outlet Temperature : 12/7 °C- Condenser Inlet Air Temperature: 35 °C
General Specifications
Technical Catalogue
TCGB0054 rev.0 - 08/2010108
13.2. OptionsFollowing table shows options:
( mark shows available)Specifications Standard Option Remarks
GeneralLow Noise Option
Super Low Noise Option
Low Ambient Fan Control (-15ºC)
Low WaterTemperature
Outlet Temperature: 0~4ºC(Low1)
Outlet Temperature: -1~-5ºC(Low2)
Outlet Temperature: -6~-10ºC(Low3)
Compressor Compressor Enclosure
ControlSystem
Circuit Breaker Protection n.a. For Each Compressor and FanFan Circuit Breaker Protection n.a. For each FanCurrent Limiter
Main Isolator Switch
Local/Remote Changeover Switch
Individual Alarm By Alarm CodeOperation Hour Meter
Pressure Sensor (High and Low)
Pump Freeze Protection Operation Pump ON/OFF OperationPump Operation Circuit Pump ON/OFF ContactNon Voltage Contact for Remote indication Pump, Operation, AlarmDC24V External Control Level or pulseShort Period Power OFF Protection
Power Failure Recover Control
2 Different Temperature Setting For Heat Storage ApplicationRemote Control Operation (Field Supplied) AC 220-240VBMS Control (HARC-70CE1 /OP; HC-A32MB) LON-WORKS, MODBUSRemote Controller (CSC-5S; CSNET WEB)
Power Meter Option Kit for CSNET WEB
Numbered Cables
Output ON/OFF Signal for Free Cooling
Condenser
Guard Net (Unit both sides)
Rear Guard Net
Coated Fin
Copper Fin
RefrigerationCycle
Independent Circuit
Discharge Valve
Suction Valve
Compressor Safety Valve
Compressor Dual Safety Valve
Dual Safety valve
Pressure Display (High and Low) Standard:Display on LCD Panel
Suction Pipe Insulation
Heat Recovery n.a.
Water Cooler
PED Certificate (97/23/EC) PED: PressureEquipment Directive
10 bar Water Pressure
PN 16 Flange With Companion FlangeDifferential Water Pressure Switch
Water Flow Switch (Field Install)
Water Cooler Heater
Common Water Pipe
Water Pressure Port Inlet / OutletWater Strainer
Others
Witness Test
Foundation Rubber Mats
Anti-vibration Springs
Wooden Crate
All painted unit
Lower Guard Net
Drawings
Technical Catalogue
14
14. D r a w i n g s
TCGB0054 rev.0 - 08/2010 109
14. Drawings..................................................................................................................10914.1. Dimensional drawings ..........................................................................................................................110
14.1.1. RCUE 180~450AG2B ..................................................................................................................................110
14.2. Wiring Diagram .....................................................................................................................................111
14.2.1. Model RCUE 180AG2B~450AG2B (POWER CIRCUIT) .............................................................................11114.2.2. Model RCUE 280AG2B~RCUE 450AG2B (Power Circuit) ..........................................................................11214.2.3. Model: RCUE180AG2B - RCUE210AG2B - RCUE240AG2B (Control Circuit) ...........................................11314.2.4. Model: RCUE280AG2B - RCUE320AG2B - RCUE350AG2B
- RCUE400AG2B - RCUE450AG2B (Control Circuit) .........................................................................11414.2.5. Model RCUE180~450AG2B (Fan Box) ........................................................................................................11514.2.6. Main Printed Circuit Board (Master) .............................................................................................................11614.2.7. Relays Printed Circuit Board ........................................................................................................................11714.2.8. Costumer Wiring of Control Circuit ...............................................................................................................11814.2.9. Parts list .......................................................................................................................................................119
Contents
Drawings
Technical Catalogue
TCGB0054 rev.0 - 08/2010110
14.1. Dimensional drawing
14.1.1. RCUE 180~450AG2BM
odel
ab
cd
ef
180A
G2B
2580
5100
1550
821
0,24
0AG
2B31
8063
0021
5028
0,32
0,35
0AG
2B25
8051
4010
240
1550
1550
1640
0,45
0AG
2B31
8063
4012
640
2150
2150
Air
inle
tA
ir in
let
Air
inle
tA
ir in
let
Air
inle
t
Air
inle
t
Air
inle
tA
ir in
let
Air
inle
t
(Mou
ntin
g ho
les)
Air
outle
t
(Mou
ntin
g ho
les)
(Ø 1
14.3
Wel
ding
con
nect
ion)
(4B
Vic
taul
ic c
onne
ctio
n)
Drawings
Technical Catalogue
14
TCGB0054 rev.0 - 08/2010 111
14.2. Wiring Diagram14.2.1. Model RCUE 180AG2B~450AG2B (POWER CIRCUIT)
2 cy
cles
mod
els
only
With
Com
pres
sor H
arne
ss
(2 cycles models only)
(2 c
ycle
s m
odel
s on
ly)
210/
240/
400/
450H
P O
nly
Drawings
Technical Catalogue
TCGB0054 rev.0 - 08/2010112
14.2.2. Model RCUE 280AG2B~RCUE 450AG2B (Power Circuit)
400H
P/ 4
50H
P O
nly
With
Com
pres
sor
H
arne
ss
Drawings
Technical Catalogue
14
TCGB0054 rev.0 - 08/2010 113
14.2.3. Model: RCUE180AG2B - RCUE210AG2B - RCUE240AG2B (Control Circuit)
Drawings
Technical Catalogue
TCGB0054 rev.0 - 08/2010114
14.2.4. Model: RCUE280AG2B - RCUE320AG2B - RCUE350AG2B - RCUE400AG2B - RCUE450AG2B (Control Circuit)
Drawings
Technical Catalogue
14
TCGB0054 rev.0 - 08/2010 115
FAN
MO
TOR
FAN
MO
TOR
FBO
X
Fan
Har
ness
Pow
er
Fan
Har
ness
Ctrl
.
FAN
MO
TOR
FBO
X
Fan
Har
ness
Pow
er
Fan
Har
ness
Ctrl
. DC
Fan
Cab
leC
ontro
l
14.2.5. Model RCUE180~450AG2B (Fan Box)
Drawings
Technical Catalogue
TCGB0054 rev.0 - 08/2010116
S D
etai
l(2
80~4
50H
P U
nits
onl
y)
for 2
cyc
les
(for 1
Cyc
le U
nits
onl
y)
All
units
For 2
cyc
les
unit
(28
0~45
0HP
)
Wat
er P
ress
ure
Sw
itch
Opt
ion
For 2
cy
cles
uni
ts
14.2.6. Main Printed Circuit Board (Master)
Drawings
Technical Catalogue
14
TCGB0054 rev.0 - 08/2010 117
B d
etai
l
180,280,320,350HP Units only
A D
etai
l: on
ly 2
40, 4
50H
P U
nits
C
oil c
onne
ctio
n fo
r CM
C (d
)
Not
e: D
oubl
e co
il ac
tivat
ion
Onl
y fo
r 1 c
ycle
Uni
ts
240,280,400,450HP
Units only
(for 1,2 cycles)
(for 2 cycles)
Onl
y fo
r PC
Bd1
14.2.7. Relays Printed Circuit Board
Drawings
Technical Catalogue
TCGB0054 rev.0 - 08/2010118
14.2.8. Costumer Wiring of Control Circuit
NO
TES
:
1. A
ll th
e se
tting
sha
ll be
per
form
ed b
efor
e P
ower
ON
.
2. R
emot
e/Lo
cal C
hang
e ov
er S
witc
h O
n O
pera
tion
Sw
itch
shal
l be
set t
o”R
emot
e”.
3.Te
rmin
als
1
~/n
57
ar
e fo
r 1~2
30V
50H
z
Te
rmin
als
A
~D
a
re fo
r DC
24V.
Te
rmin
als
E
~F
a
re H
-LIN
K (L
ow s
igna
l).
2 C
ycle
s
Neu
tral
R P
hase
In c
ase
of re
mot
e co
ntro
l ope
ratio
n th
is w
ire s
hall
be re
mov
ed
R P
hase
Rem
ote
Con
trol S
witc
h (R
SW
-A) (
Opt
ion)
Pum
p O
pera
tion
Pum
pIn
terlo
ck
ALA
RM
LA
MP
A
LAR
M
SIG
NA
LD
C24
VR
UN
/STO
P S
IGN
AL
Nig
ht S
hift
M
ode
(OP
TIO
N)
2nd.
Set
ting
Tem
pera
ture
(OP
TIO
N)
E
xter
nal
Ther
m. O
per.
(O
PTI
ON
)
Fan
Ope
rat
Forc
ed M
ode
(OP
TIO
N)
In c
ase
of in
divi
dual
Indi
catio
n w
ithou
t Rem
ote
Con
trol S
witc
hC
ostu
mer
Wiri
ng
ON
LY U
SE
D F
OR
- DIF
F. W
ATE
R P
SW
- FLO
W S
WIT
CH
(O
PTI
ON
S)
ON
LY U
SE
D F
OR
SO
ME
OP
TIO
NS
:- D
IFF.
WAT
ER
PR
ES
SU
RE
SW
ITC
H- F
LOW
SW
ITC
H
Forc
e C
ompr
esso
rLo
ad O
pera
tion
Cau
tion
Lam
pFa
n O
pera
t.
Fre
e C
oolin
g O
utpu
t Sig
nal
(Onl
y cy
cle
nº1)
SE
TTIN
G O
F LO
W V
OLT
AG
E C
ON
TRO
L
Forc
e C
ompr
esso
r Loa
d
LOW
VO
LTA
GE
RE
MO
TE C
ON
TRO
L
Drawings
Technical Catalogue
14
TCGB0054 rev.0 - 08/2010 119
14.2.9. Parts list(n=1~N)
Mark Name Remark Mark Name Remark
TB ASSY Terminal board Assy FSW Water Flow Switch OptionMI Main Interrruptor (Switch) n= 1~2 CNn1~n2c Connectors on Connector Support n= 1~2
NFn1,n2,n01~16 Noise Filters (PCB or ring cores) n= 1~2 ARR,H,FnAuxiliar Relay (Remote Control, Econ, Fan Op.) n= 1~2
ORCn Over Current Relay for Compressor n= 1~2 Pdn /Psn Discharge / suction pressure sensor n= 1~2CMCn Compressor Main Contactor n= 1~2 WP Water Switch (DPSW or FSW Option) OptionCMCDn Delta Connection Compessor Contactor n= 1~2 DPSW Differential Water Pressure Switch OptionCMCsn Star Connection Compressor Contactor n= 1~2 PSHn High Pressure Switch n= 1~2CMFn1,n2 Fan Motor Contactor n= 1~2 PSWn Pressure Switch for Economizer n= 1~2SVn1~n6 Slide Valve for Compressor Load Control n= 1~2 SVEn Solenoid Valve for Economizer n= 1~2SPn1~n6 Solderless Splice n= 1~2 CLn Caution Lamp for Fan Operation n= 1~2THMWON Water Temp. in evaporator backside n= 1~2 LY, LG, LW Lamp (Yellow, Green, White)THMdn Discharge Thermistor n= 1~2 RL,OL1,2 Alarm and Operation Lamps OptionTHMSn Suction Thermistor n= 1~2 CTn Current transformer (Current Sensor) n= 1~2THMIn Liquid Themistor n= 1~2 EHn Electric Heater on Cooler n= 1~2PCBc,dn Printed Circuit Board (main, cycle) n= 1~2 LCD Liquid Cristal DisplayPCBen1~n8 Fan Module PCB (DC Fan motors) n= 1~2 SCn Power Source 24V DCPCBa Configuration Setting PCB DPB Door Push Button
CCBn Connector on Copper Bar n= 1~6 PB1,2 Push Button for Local ON/OFF White/Black
PFCn1~n3 Protection Fuse Compressors n= 1~2 SR1,2 Button for Remote ON/OFF OptionPFFn1~n3 Protection Fuse for Fan n= 1~2 ITCn Compressor Internal Thermostat n= 1~2EF1~3,R,S,T Electric Fuse 6A ITFn5,n8 Fan Internal Thermostat n= 1~2FF (a)n1,n8 Fan Fuses (AC or DC Fans) n= 1~2 MVn1~n3 Electronic Expansion Valve n= 1~2MCn Motor Compressor n= 1~2 N1~N3 Blue Neutral TerminalsMF(dc/ac)n1~n8 Fan Motor (DC/AC) n= 1~2 TBOXcn Terminal Board on Compressor BOX n= 1~2MFF n Motor Fan inside E.BOX n= 1~2 TBOX Terminal Boxes for Fan ConnectionsCHn Crankcase Heater on Compressor n= 1~2 CEn1~n7 Connector n= 1~2BAR TBn Neutral Bar TB n= 1~2 SW1~7 Switches
CAn1~n8 AC Capacitors (for AC Fans) n= 1~2 CMP Operation signal from pump contactor (feedback)
TF1~7 Transformer Option TRP Thermal Relay Protection for pump
n:1~n
Model N
RCUE180, 210, 240AG2B 1
RCUE280, 320, 350,400, 450AG2B 2
Model Selection
Technical Catalogue
15
15. M o d e l S e l e c t i o n
TCGB0054 rev.0 - 08/2010 121
15. Model Selection .......................................................................................................12115.1. Selection Example ............................................................................................................................... 122
15.2. Performance Table .............................................................................................................................. 123
15.3. Electrical Data .................................................................................................................................... 127
15.4. Sound Data.......................................................................................................................................... 128
Contents
Model Selection
Technical Catalogue
TCGB0054 rev.0 - 08/2010122
15.1. Selection Example
1. Determine the system requirements
Condenser Air Inlet Temperature: 30 °CChilled Water Outlet Temperature: 7 °CChilled Water Inlet Temperature: 12 °CCooling Load: 450 kW
2. Select Model and Read the Performance
From the cooling capacity table, model RCUE180AG2B can be selected with the following performance.
Cooling Capacity: 466,9 kWChilled Water Flow Rate: 80,3 m³/hWater Cooler Pressure Drop: 54,5 kPaCompressor Input Power: 130,6 kW
3. Correct the Data
− Flow Rate When the water Inlet/Outlet temperature difference is not 5°C, correct the flow rate by the following formula:
Corrected Flow Rate =
5(°C) × Tabulated Flow Rate (CFR)Given Temp. Difference(°C)
The corrected Flow Rate must be confirmed to be within the working range.
− Cooling Capacity and Compressor Input. When the fouling factor is taken into consideration, the cooling capacity and the compressor input will be different from the value indicated in the cooling capacity table.
Corrected Capacity = Kfc × CAP
Corrected Input = Kfi × IPT
CAP: Tabulated Cooling CapacityIPT: Tabulated Compressor InputKfc: Capacity Correction FactorKfi: Compressor Input Correction Factor
Fouling Factor m2h°C/kcal(m2°C/kW)
Kfc Kfi
0 1.00 1.00
0.00005 (0.044) 1.00 1.00
0.0001(0.088) 0.99 1.01
4. Water Pressure Drop
− Water pressure drop is given by the following formula
PD = α x Qβ
PD: Pressure Drop (kPa)Q: Water Flow (m³/h)α,β β Parameters (table below)
Model: RCUE-AG2B α β
180 0.0133 1.8961210 0.0101 1.8982240 0.0080 1.9006280 0.0057 1.8938320 0.0044 1.8948350 0.0036 1.8961400 0.0027 1.8982450 0.0021 1.9006
Model Selection
Technical Catalogue
15
TCGB0054 rev.0 - 08/2010 123
15.2. Performance Table
ABT COTRCUE180AG2B RCUE210AG2B RCUE240AG2B RCUE280AG2B
CCAP CFR CPD IPT CCAP CFR CPD IPT CCAP CFR CPD IPT CCAP CFR CPD IPT25,0 5,0 452,3 77,8 51,3 116,7 544,0 93,6 55,8 139,5 600,7 103,3 53,7 155,3 764,5 131,5 58,5 192,0
6,0 467,4 80,4 54,6 118,1 562,2 96,7 59,3 141,2 620,7 106,8 57,2 157,1 790,0 135,9 62,2 194,3 7,0 482,5 83,0 58,0 119,4 580,3 99,8 63,0 142,8 640,8 110,2 60,7 158,9 815,5 140,3 66,1 196,5 8,0 497,6 85,6 61,5 120,8 598,5 102,9 66,8 144,5 660,8 113,7 64,4 160,8 841,0 144,7 70,1 198,8 9,0 512,7 88,2 65,1 122,2 616,6 106,1 70,7 146,1 680,9 117,1 68,2 162,6 866,5 149,0 74,2 201,1
10,0 527,8 90,8 68,8 123,6 634,8 109,2 74,7 147,8 700,9 120,6 72,0 164,4 892,1 153,4 78,3 203,3 11,0 542,9 93,4 72,5 124,9 652,9 112,3 78,8 149,4 720,9 124,0 76,0 166,2 917,6 157,8 82,6 205,6 12,0 558,0 96,0 76,4 126,3 671,1 115,4 83,1 151,1 741,0 127,5 80,1 168,1 943,1 162,2 87,0 207,9 13,0 573,1 98,6 80,4 127,7 689,2 118,5 87,4 152,7 761,0 130,9 84,2 169,9 968,6 166,6 91,6 210,1 14,0 588,2 101,2 84,4 129,1 707,4 121,7 91,8 154,3 781,1 134,3 88,5 171,7 994,1 171,0 96,2 212,4 15,0 603,2 103,8 88,6 130,5 725,5 124,8 96,3 156,0 801,1 137,8 92,9 173,6 1019,6 175,4 100,9 214,6
30,0 5,0 437,0 75,2 48,1 127,7 525,6 90,4 52,2 152,7 580,4 99,8 50,3 169,9 738,6 127,0 54,8 210,1 6,0 452,0 77,7 51,2 129,1 543,6 93,5 55,7 154,4 600,2 103,2 53,7 171,8 763,9 131,4 58,4 212,5 7,0 466,9 80,3 54,5 130,6 561,6 96,6 59,2 156,1 620,1 106,7 57,1 173,7 789,2 135,7 62,1 214,8 8,0 481,9 82,9 57,9 132,0 579,6 99,7 62,9 157,8 640,0 110,1 60,6 175,6 814,5 140,1 65,9 217,2 9,0 496,9 85,5 61,3 133,4 597,6 102,8 66,6 159,5 659,8 113,5 64,2 177,5 839,8 144,4 69,9 219,5
10,0 511,8 88,0 64,9 134,8 615,6 105,9 70,5 161,2 679,7 116,9 68,0 179,4 865,1 148,8 73,9 221,8 11,0 526,8 90,6 68,5 136,3 633,6 109,0 74,5 162,9 699,6 120,3 71,8 181,3 890,4 153,1 78,1 224,2 12,0 541,8 93,2 72,2 137,7 651,6 112,1 78,5 164,6 719,5 123,7 75,7 183,2 915,7 157,5 82,3 226,5 13,0 556,7 95,8 76,1 139,1 669,6 115,2 82,7 166,3 739,3 127,2 79,7 185,1 941,0 161,8 86,7 228,9 14,0 571,7 98,3 80,0 140,5 687,6 118,3 87,0 168,0 759,2 130,6 83,9 187,0 966,3 166,2 91,1 231,2 15,0 586,6 100,9 84,0 141,9 705,6 121,4 91,4 169,7 779,1 134,0 88,1 188,9 991,5 170,5 95,7 233,5
35,0 5,0 410,1 70,5 42,6 138,1 493,3 84,8 46,3 165,1 544,6 93,7 44,6 183,7 693,2 119,2 48,6 227,2 6,0 424,6 73,0 45,5 139,5 510,6 87,8 49,4 166,8 563,8 97,0 47,6 185,7 717,6 123,4 51,9 229,6 7,0 439,0 75,5 48,5 141,0 528,0 90,8 52,7 168,6 583,0 100,3 50,8 187,6 742,0 127,6 55,3 232,0 8,0 453,4 78,0 51,6 142,5 545,4 93,8 56,0 170,4 602,2 103,6 54,0 189,5 766,4 131,8 58,8 234,4 9,0 467,9 80,5 54,7 143,9 562,7 96,8 59,5 172,1 621,4 106,9 57,3 191,5 790,8 136,0 62,4 236,8
10,0 482,3 83,0 58,0 145,4 580,1 99,8 63,0 173,9 640,6 110,2 60,7 193,4 815,2 140,2 66,1 239,2 11,0 496,8 85,4 61,3 146,9 597,5 102,8 66,6 175,6 659,7 113,5 64,2 195,4 839,7 144,4 69,9 241,6 12,0 511,2 87,9 64,7 148,3 614,9 105,8 70,4 177,4 678,9 116,8 67,8 197,3 864,1 148,6 73,8 244,1 13,0 525,7 90,4 68,2 149,8 632,2 108,7 74,2 179,1 698,1 120,1 71,5 199,3 888,5 152,8 77,7 246,5 14,0 540,1 92,9 71,8 151,3 649,6 111,7 78,1 180,9 717,3 123,4 75,3 201,2 912,9 157,0 81,8 248,9 15,0 554,6 95,4 75,5 152,7 667,0 114,7 82,1 182,6 736,5 126,7 79,1 203,2 937,3 161,2 86,0 251,3
40,0 5,0 383,2 65,9 37,5 151,5 460,9 79,3 40,7 181,2 508,9 87,5 39,2 201,6 647,7 111,4 42,7 249,3 6,0 397,1 68,3 40,1 153,1 477,7 82,2 43,6 183,0 527,4 90,7 42,0 203,7 671,2 115,5 45,7 251,9 7,0 411,1 70,7 42,8 154,6 494,4 85,0 46,5 184,9 545,9 93,9 44,8 205,7 694,8 119,5 48,8 254,4 8,0 425,0 73,1 45,6 156,2 511,2 87,9 49,5 186,7 564,4 97,1 47,7 207,8 718,3 123,6 52,0 256,9 9,0 438,9 75,5 48,5 157,7 527,9 90,8 52,7 188,6 582,9 100,3 50,7 209,8 741,9 127,6 55,3 259,5
10,0 452,8 77,9 51,4 159,2 544,7 93,7 55,9 190,4 601,4 103,4 53,8 211,9 765,4 131,7 58,6 262,0 11,0 466,8 80,3 54,5 160,8 561,4 96,6 59,2 192,3 619,9 106,6 57,0 213,9 788,9 135,7 62,1 264,6 12,0 480,7 82,7 57,6 162,3 578,2 99,4 62,6 194,1 638,4 109,8 60,3 216,0 812,5 139,7 65,6 267,1 13,0 494,6 85,1 60,8 163,9 594,9 102,3 66,1 196,0 656,9 113,0 63,7 218,0 836,0 143,8 69,3 269,6 14,0 508,6 87,5 64,1 165,4 611,7 105,2 69,7 197,8 675,4 116,2 67,1 220,1 859,6 147,8 73,0 272,2 15,0 522,5 89,9 67,5 167,0 628,4 108,1 73,3 199,6 693,9 119,3 70,7 222,1 883,1 151,9 76,9 274,7
43,0 5,0 367,1 63,1 34,5 159,6 441,5 75,9 37,5 190,9 487,5 83,8 36,1 212,4 620,4 106,7 39,4 262,6 6,0 380,7 65,5 37,0 161,2 457,9 78,8 40,2 192,8 505,6 87,0 38,7 214,5 643,4 110,7 42,2 265,2 7,0 394,3 67,8 39,6 162,8 474,2 81,6 43,0 194,7 523,6 90,1 41,4 216,6 666,5 114,6 45,1 267,9 8,0 407,9 70,2 42,2 164,4 490,6 84,4 45,8 196,6 541,7 93,2 44,2 218,7 689,5 118,6 48,1 270,5 9,0 421,5 72,5 44,9 166,0 507,0 87,2 48,8 198,5 559,8 96,3 47,0 220,8 712,5 122,5 51,2 273,1
10,0 435,2 74,8 47,7 167,6 523,4 90,0 51,8 200,4 577,9 99,4 49,9 222,9 735,5 126,5 54,4 275,7 11,0 448,8 77,2 50,6 169,1 539,8 92,8 54,9 202,3 596,0 102,5 52,9 225,1 758,5 130,5 57,6 278,3 12,0 462,4 79,5 53,5 170,7 556,1 95,7 58,1 204,2 614,1 105,6 56,0 227,2 781,5 134,4 61,0 280,9 13,0 476,0 81,9 56,5 172,3 572,5 98,5 61,4 206,1 632,1 108,7 59,2 229,3 804,6 138,4 64,4 283,5 14,0 489,6 84,2 59,6 173,9 588,9 101,3 64,8 208,0 650,2 111,8 62,5 231,4 827,6 142,3 68,0 286,2 15,0 503,2 86,6 62,8 175,5 605,3 104,1 68,3 209,9 668,3 115,0 65,8 233,5 850,6 146,3 71,6 288,8
Where,ABT: Condenser Air Inlet Temperature (°C)COT: Chilled Water Outlet Temperature (°C)CCAP: Cooling Capacity (kW)
CFR: Chilled Water Flow Rate at 5°C (m3/h)CPD: Water Cooler Pressure Drop (kPa)IPT: Compressor Input Power (kW)
Conversion Multiplier:1 kW = 860 kcal/h
= 3412 Btu/h 1 kPa = 0.102 mAq
Model Selection
Technical Catalogue
TCGB0054 rev.0 - 08/2010124
Performance Table (cont.)
ABT COTRCUE180AG2B RCUE210AG2B RCUE240AG2B RCUE280AG2B
CCAP CFR CPD IPT CCAP CFR CPD IPT CCAP CFR CPD IPT CCAP CFR CPD IPT45,0 5,0 356,3 61,3 32,6 165,0 428,5 73,7 35,5 197,3 473,2 81,4 34,1 219,5 602,2 103,6 37,2 271,5
6,0 369,7 63,6 35,0 166,6 444,7 76,5 38,0 199,2 491,0 84,5 36,6 221,7 624,9 107,5 39,9 274,2 7,0 383,1 65,9 37,5 168,2 460,8 79,3 40,7 201,2 508,8 87,5 39,2 223,8 647,6 111,4 42,7 276,8 8,0 396,5 68,2 40,0 169,9 476,9 82,0 43,4 203,1 526,6 90,6 41,8 226,0 670,2 115,3 45,6 279,5 9,0 410,0 70,5 42,6 171,5 493,1 84,8 46,3 205,0 544,4 93,6 44,6 228,2 692,9 119,2 48,6 282,2
10,0 423,4 72,8 45,3 173,1 509,2 87,6 49,2 207,0 562,2 96,7 47,4 230,3 715,6 123,1 51,6 284,8 46,0 5,0 350,9 60,4 31,7 167,7 422,1 72,6 34,4 200,5 466,0 80,2 33,2 223,1 593,1 102,0 36,2 275,9
6,0 364,2 62,6 34,0 169,3 438,1 75,3 37,0 202,5 483,7 83,2 35,6 225,3 615,6 105,9 38,8 278,6 7,0 377,5 64,9 36,4 171,0 454,1 78,1 39,6 204,4 501,4 86,2 38,1 227,5 638,1 109,8 41,5 281,3 8,0 390,9 67,2 38,9 172,6 470,1 80,9 42,3 206,4 519,1 89,3 40,7 229,6 660,6 113,6 44,4 284,0 9,0 404,2 69,5 41,4 174,2 486,1 83,6 45,0 208,3 536,7 92,3 43,4 231,8 683,1 117,5 47,3 286,7
10,0 417,5 71,8 44,1 175,9 502,1 86,4 47,9 210,3 554,4 95,4 46,1 234,0 705,6 121,4 50,2 289,4
Where,ABT: Condenser Air Inlet Temperature (°C)COT: Chilled Water Outlet Temperature (°C)CCAP: Cooling Capacity (kW)
CFR: Chilled Water Flow Rate at 5°C (m3/h)CPD: Water Cooler Pressure Drop (kPa)IPT: Compressor Input Power (kW)
Conversion Multiplier:1 kW = 860 kcal/h
= 3412 Btu/h 1 kPa = 0.102 mAq
Model Selection
Technical Catalogue
15
TCGB0054 rev.0 - 08/2010 125
Performance Table (cont.)
ABT COTRCUE320AG2B RCUE350AG2B RCUE400AG2B RCUE450AG2B
CCAP CFR CPD IPT CCAP CFR CPD IPT CCAP CFR CPD IPT CCAP CFR CPD IPT25,0 5,0 825,3 141,9 53,1 202,8 904,6 155,6 51,3 233,4 1088,0 187,1 55,7 279,1 1201,4 206,6 53,8 310,5
6,0 852,8 146,7 56,5 205,2 934,8 160,8 54,6 236,1 1124,3 193,4 59,3 282,4 1241,4 213,5 57,3 314,2 7,0 880,4 151,4 60,0 207,5 965,0 166,0 58,0 238,9 1160,6 199,6 63,0 285,7 1281,5 220,4 60,8 317,8 8,0 907,9 156,2 63,6 209,9 995,2 171,2 61,5 241,6 1196,9 205,9 66,8 288,9 1321,6 227,3 64,5 321,5 9,0 935,4 160,9 67,4 212,3 1025,4 176,4 65,0 244,4 1233,2 212,1 70,7 292,2 1361,7 234,2 68,3 325,2 10,0 963,0 165,6 71,2 214,7 1055,6 181,6 68,7 247,1 1269,6 218,4 74,7 295,5 1401,8 241,1 72,1 328,8 11,0 990,5 170,4 75,1 217,1 1085,7 186,7 72,5 249,9 1305,9 224,6 78,8 298,8 1441,9 248,0 76,1 332,5 12,0 1018,1 175,1 79,1 219,5 1115,9 191,9 76,4 252,6 1342,2 230,9 83,0 302,1 1482,0 254,9 80,2 336,1 13,0 1045,6 179,8 83,2 221,9 1146,1 197,1 80,3 255,4 1378,5 237,1 87,3 305,4 1522,1 261,8 84,3 339,8 14,0 1073,1 184,6 87,4 224,3 1176,3 202,3 84,4 258,2 1414,8 243,3 91,7 308,7 1562,2 268,7 88,6 343,5 15,0 1100,7 189,3 91,7 226,7 1206,5 207,5 88,5 260,9 1451,1 249,6 96,2 312,0 1602,3 275,6 93,0 347,1
30,0 5,0 797,4 137,1 49,8 221,9 874,0 150,3 48,1 255,4 1051,2 180,8 52,2 305,4 1160,7 199,6 50,4 339,9 6,0 824,7 141,8 53,0 224,4 903,9 155,5 51,2 258,3 1087,2 187,0 55,6 308,8 1200,5 206,5 53,7 343,6 7,0 852,0 146,5 56,4 226,9 933,9 160,6 54,5 261,1 1123,2 193,2 59,2 312,2 1240,2 213,3 57,1 347,4 8,0 879,3 151,2 59,9 229,3 963,8 165,8 57,8 264,0 1159,2 199,4 62,8 315,6 1279,9 220,1 60,7 351,2 9,0 906,6 155,9 63,5 231,8 993,7 170,9 61,3 266,8 1195,2 205,6 66,6 319,0 1319,7 227,0 64,3 355,0 10,0 933,9 160,6 67,1 234,3 1023,6 176,1 64,8 269,7 1231,2 211,8 70,4 322,4 1359,4 233,8 68,0 358,8 11,0 961,2 165,3 70,9 236,7 1053,6 181,2 68,5 272,5 1267,2 218,0 74,4 325,8 1399,2 240,7 71,9 362,6 12,0 988,5 170,0 74,8 239,2 1083,5 186,4 72,2 275,3 1303,2 224,1 78,5 329,2 1438,9 247,5 75,8 366,3 13,0 1015,8 174,7 78,7 241,7 1113,4 191,5 76,0 278,2 1339,2 230,3 82,6 332,6 1478,7 254,3 79,8 370,1 14,0 1043,1 179,4 82,8 244,2 1143,4 196,7 80,0 281,0 1375,2 236,5 86,9 336,0 1518,4 261,2 84,0 373,9 15,0 1070,4 184,1 86,9 246,6 1173,3 201,8 84,0 283,9 1411,1 242,7 91,3 339,4 1558,1 268,0 88,2 377,7
35,0 5,0 748,3 128,7 44,1 239,9 820,2 141,1 42,6 276,1 986,5 169,7 46,3 330,2 1089,3 187,4 44,7 367,4 6,0 774,6 133,2 47,1 242,5 849,1 146,0 45,5 279,1 1021,3 175,7 49,4 333,7 1127,6 194,0 47,7 371,3 7,0 801,0 137,8 50,2 245,0 878,0 151,0 48,5 282,0 1056,0 181,6 52,6 337,2 1166,0 200,6 50,8 375,2 8,0 827,4 142,3 53,4 247,5 906,9 156,0 51,5 284,9 1090,7 187,6 56,0 340,7 1204,4 207,2 54,1 379,1 9,0 853,7 146,8 56,6 250,1 935,8 161,0 54,7 287,9 1125,5 193,6 59,4 344,2 1242,7 213,8 57,4 383,0 10,0 880,1 151,4 60,0 252,6 964,7 165,9 57,9 290,8 1160,2 199,6 62,9 347,7 1281,1 220,3 60,8 386,9 11,0 906,4 155,9 63,4 255,2 993,6 170,9 61,3 293,7 1195,0 205,5 66,6 351,2 1319,5 226,9 64,3 390,8 12,0 932,8 160,4 67,0 257,7 1022,5 175,9 64,7 296,6 1229,7 211,5 70,3 354,7 1357,8 233,5 67,9 394,7 13,0 959,1 165,0 70,6 260,3 1051,3 180,8 68,2 299,6 1264,5 217,5 74,1 358,2 1396,2 240,1 71,6 398,6 14,0 985,5 169,5 74,3 262,8 1080,2 185,8 71,8 302,5 1299,2 223,5 78,0 361,7 1434,6 246,7 75,4 402,5 15,0 1011,9 174,0 78,2 265,4 1109,1 190,8 75,5 305,4 1334,0 229,4 82,0 365,2 1472,9 253,3 79,2 406,4
40,0 5,0 699,2 120,3 38,8 263,3 766,4 131,8 37,5 303,1 921,8 158,5 40,7 362,4 1017,8 175,1 39,3 403,2 6,0 724,6 124,6 41,5 266,0 794,3 136,6 40,1 306,2 955,3 164,3 43,5 366,1 1054,8 181,4 42,0 407,3 7,0 750,0 129,0 44,3 268,7 822,1 141,4 42,8 309,2 988,8 170,1 46,5 369,8 1091,8 187,8 44,9 411,4 8,0 775,4 133,4 47,2 271,3 850,0 146,2 45,6 312,3 1022,3 175,8 49,5 373,5 1128,8 194,2 47,8 415,5 9,0 800,9 137,7 50,2 274,0 877,8 151,0 48,4 315,4 1055,8 181,6 52,6 377,2 1165,8 200,5 50,8 419,7 10,0 826,3 142,1 53,2 276,7 905,7 155,8 51,4 318,5 1089,3 187,4 55,8 380,8 1202,8 206,9 53,9 423,8 11,0 851,7 146,5 56,4 279,4 933,6 160,6 54,4 321,6 1122,8 193,1 59,1 384,5 1239,8 213,2 57,1 427,9 12,0 877,1 150,9 59,6 282,1 961,4 165,4 57,6 324,7 1156,3 198,9 62,5 388,2 1276,8 219,6 60,4 432,0 13,0 902,5 155,2 62,9 284,7 989,3 170,2 60,8 327,7 1189,8 204,6 66,0 391,9 1313,8 226,0 63,8 436,1 14,0 927,9 159,6 66,3 287,4 1017,1 174,9 64,1 330,8 1223,3 210,4 69,6 395,6 1350,8 232,3 67,2 440,2 15,0 953,3 164,0 69,8 290,1 1045,0 179,7 67,4 333,9 1256,8 216,2 73,3 399,3 1387,7 238,7 70,8 444,3
43,0 5,0 669,8 115,2 35,8 277,3 734,1 126,3 34,5 319,2 883,0 151,9 37,5 381,7 975,0 167,7 36,2 424,7 6,0 694,6 119,5 38,3 280,1 761,4 131,0 37,0 322,4 915,7 157,5 40,2 385,5 1011,1 173,9 38,8 429,0 7,0 719,4 123,7 41,0 282,9 788,6 135,6 39,5 325,6 948,5 163,1 42,9 389,3 1047,3 180,1 41,4 433,2 8,0 744,3 128,0 43,7 285,6 815,8 140,3 42,2 328,8 981,2 168,8 45,8 393,1 1083,5 186,4 44,2 437,4 9,0 769,1 132,3 46,5 288,4 843,1 145,0 44,9 331,9 1014,0 174,4 48,7 396,9 1119,6 192,6 47,1 441,6 10,0 794,0 136,6 49,4 291,1 870,3 149,7 47,7 335,1 1046,8 180,0 51,8 400,7 1155,8 198,8 50,0 445,9 11,0 818,8 140,8 52,3 293,9 897,5 154,4 50,5 338,3 1079,5 185,7 54,9 404,5 1192,0 205,0 53,0 450,1 12,0 843,7 145,1 55,4 296,7 924,8 159,1 53,5 341,5 1112,3 191,3 58,1 408,3 1228,1 211,2 56,1 454,3 13,0 868,5 149,4 58,5 299,4 952,0 163,7 56,5 344,6 1145,0 196,9 61,4 412,1 1264,3 217,5 59,3 458,6 14,0 893,4 153,7 61,7 302,2 979,3 168,4 59,6 347,8 1177,8 202,6 64,8 415,9 1300,5 223,7 62,5 462,8 15,0 918,2 157,9 65,0 304,9 1006,5 173,1 62,8 351,0 1210,5 208,2 68,2 419,7 1336,6 229,9 65,9 467,0
Where,ABT: Condenser Air Inlet Temperature (°C)COT: Chilled Water Outlet Temperature (°C)CCAP: Cooling Capacity (kW)
CFR: Chilled Water Flow Rate at 5°C (m3/h)CPD: Water Cooler Pressure Drop (kPa)IPT: Compressor Input Power (kW)
Conversion Multiplier:1 kW = 860 kcal/h
= 3412 Btu/h 1 kPa = 0.102 mAq
Model Selection
Technical Catalogue
TCGB0054 rev.0 - 08/2010126
Performance Table (cont.)
ABT COTRCUE320AG2B RCUE350AG2B RCUE400AG2B RCUE450AG2B
CCAP CFR CPD IPT CCAP CFR CPD IPT CCAP CFR CPD IPT CCAP CFR CPD IPT45,0 5,0 650,1 111,8 33,8 286,7 712,6 122,6 32,6 330,0 857,1 147,4 35,4 394,6 946,4 162,8 34,2 439,1
6,0 674,6 116,0 36,3 289,5 739,4 127,2 35,0 333,2 889,4 153,0 38,0 398,5 982,0 168,9 36,7 443,4 7,0 699,1 120,2 38,8 292,3 766,3 131,8 37,4 336,5 921,6 158,5 40,7 402,3 1017,6 175,0 39,2 447,7 8,0 723,5 124,4 41,4 295,1 793,1 136,4 40,0 339,7 953,9 164,1 43,4 406,2 1053,2 181,2 41,9 452,0 9,0 748,0 128,7 44,1 298,0 819,9 141,0 42,6 343,0 986,1 169,6 46,2 410,1 1088,8 187,3 44,6 456,3 10,0 772,5 132,9 46,9 300,8 846,7 145,6 45,2 346,2 1018,4 175,2 49,1 414,0 1124,5 193,4 47,4 460,6
46,0 5,0 640,3 110,1 32,8 291,4 701,9 120,7 31,7 335,4 844,2 145,2 34,4 401,0 932,1 160,3 33,2 446,2 6,0 664,6 114,3 35,2 294,2 728,5 125,3 34,0 338,7 876,2 150,7 36,9 405,0 967,4 166,4 35,6 450,6 7,0 688,9 118,5 37,7 297,1 755,1 129,9 36,4 341,9 908,2 156,2 39,5 408,9 1002,8 172,5 38,2 454,9 8,0 713,1 122,7 40,3 299,9 781,7 134,5 38,9 345,2 940,2 161,7 42,2 412,8 1038,1 178,6 40,8 459,3 9,0 737,4 126,8 42,9 302,8 808,3 139,0 41,4 348,5 972,2 167,2 45,0 416,7 1073,5 184,6 43,4 463,6 10,0 761,7 131,0 45,6 305,6 834,9 143,6 44,1 351,7 1004,2 172,7 47,8 420,6 1108,8 190,7 46,2 468,0
Where,ABT: Condenser Air Inlet Temperature (°C)COT: Chilled Water Outlet Temperature (°C)CCAP: Cooling Capacity (kW)
CFR: Chilled Water Flow Rate at 5°C (m3/h)CPD: Water Cooler Pressure Drop (kPa)IPT: Compressor Input Power (kW)
Conversion Multiplier:1 kW = 860 kcal/h
= 3412 Btu/h 1 kPa = 0.102 mAq
Model Selection
Technical Catalogue
15
TCGB0054 rev.0 - 08/2010 127
15.3. Electrical Data
ModelUnit Main Power
ApplicableInstantaneous
Voltage (V)
Commpressor Motor
CondenserFan Motor
MaximumUnit
Current
STC*2
UnitMaximumSTC*1 RNC IPT RNC IPT
Ph (V) (Hz) Maximum Minimum (A) (A) (kW) (A) (kW) (A) (A)
RCUE180AG2B 3+N 400 50 440 360 416 234 141 13.8 10,0 322 429RCUE210AG2B 3+N 400 50 440 360 540 280 169 16.8 13,4 385 556RCUE240AG2B 3+N 400 50 440 360 540 311 188 16.8 13,4 426 556RCUE280AG2B 3+N 400 50 440 360 416 385 232 27.6 20,0 534 502RCUE320AG2B 3+N 400 50 440 360 416 406 245 27.6 20,0 562 502RCUE350AG2B 3+N 400 50 440 360 416 468 282 27.6 20,0 643 502RCUE400AG2B 3+N 400 50 440 360 540 559 337 33.6 26,8 770 651RCUE450AG2B 3+N 400 50 440 360 540 622 375 33.6 26,8 853 651
RNC: Running Current(A)STC: Starting Current(A)IPT: Electric Power Input(kW)Hz: Frequency(Hz)Ph: Nº of phases
NOTE:1. This data is based on the following conditions...Chilled Water Inlet/Outlet Temperature: 12/7°C, Ambient Temperature: 35°C.2. The “Maximum Unit Current” shown in the above table is the maximum total unit running current at the following conditions.
Supply Voltage: 90% of the rated voltage, Unit Capacity: 100% at max. operating conditions3. The power supply cables must be sized to cover this maximum current value.4. Starting Current (*1,*2) means as follows.
*1:First Compressor Starting Current*2:Unit Maximum Starting Current, when Last Compressor starts.
5. Compressor motor is star-delta starting.
Model Selection
Technical Catalogue
TCGB0054 rev.0 - 08/2010128
15.4. Sound Data
ModelSound Power Level (dB)
Frequency Band (Hz)Overall
63 125 250 500 1000 2000 4000 8000RCUE180AG2B 97 95 90 88 86 79 69 65 90RCUE210AG2B 99 97 92 90 88 81 71 67 92RCUE240AG2B 99 97 92 90 88 81 71 67 92RCUE280AG2B 100 98 93 91 89 82 72 68 93RCUE320AG2B 100 98 93 91 89 82 72 68 93RCUE350AG2B 100 98 93 91 89 82 72 68 93RCUE400AG2B 102 100 95 93 91 84 74 70 95RCUE450AG2B 102 100 95 93 91 84 74 70 95
NOTES:1. The sound pressure is based on the following conditions:
− 1 meter from the control panel surface, and 1.5 meter from the floor level − Voltage of the power source is 380 V − The above data are measured in an anechoic chamber, so that reflected sound should be taken into consideration in the
field.2. Operating conditions are as follows:
− Water Inlet/Outlet Temperature 12/7ºC, Ambient Temperature 35ºC, all fans running.
Application Data
Technical Catalogue
16
16. A p p l i c a t i o n D a t a
TCGB0054 rev.0 - 08/2010 129
16. Application Data.......................................................................................................12916.1. Working Range .................................................................................................................................... 130
16.2. Part Load Performance ....................................................................................................................... 131
16.2.1. Model: RCUE180AG2B~ RCUE450AG2B .................................................................................................. 131
16.3. Ethylene Glycol Application ................................................................................................................. 132
Contents
Application Data
Technical Catalogue
TCGB0054 rev.0 - 08/2010130
16.1. Working Range
¡ Air-cooled Water Chiller units RCUE-AG2B
Item Description Remark
Power Supply
Working Voltage 90%~110% of Rated Voltage
Voltage Imbalance Within ±3% Deviation from Each Voltage at Compressor Terminals
Starting Voltage Higher than 85% of Rated VoltageAmbient Temperature -15 ~ 46ºC
Water Outlet Temperature
Standard 5 ~ 15ºC Water
Low Water Temperature Option
4 ~ 0ºC (Low 1) -1 ~ -5ºC (Low2)-6 ~ -10ºC (Low3)
Ethylene glycol
Maximum Permissible Water Pressure 1.0 MPaHumidity ≤50% (40ºC) (1)
Altitude ≤1000 m (1)
(1) Minimum working range requeriments according to EN60204-1. In case of different working range conditions, ask conformity to HITACHI Distributor.)
¡ Water Flow Range
MODEL RCUE AG2B 180 210 240 280 320 350 400 450
Water Flow Rangem3/h 47.2 56.8 62.7 79.8 86.1 94.4 114 125
m3/h 126 151 167 213 230 252 303 334
Application Data
Technical Catalogue
16
TCGB0054 rev.0 - 08/2010 131
16.2. Part Load Performance
16.2.1. Model: RCUE180AG2B~RCUE450AG2B
AmbientTemperature
(°C)Performance
Compressor Load15~99%
FULL LOAD
43
Capacity 18 20 25 30 40 50 60 70 75 80 89
Input 24 26 31 36 45 54 65 79 87 96 117
COP 74 76 80 84 89 92 92 89 87 83 76
40
Capacity 19 20 25 30 40 50 60 70 75 80 90 94
Input 24 25 30 34 42 51 60 71 77 84 102 110
COP 79 80 85 89 95 99 100 98 97 95 88 85
35
Capacity 20 25 30 40 50 60 70 75 80 90 100
Input 23 27 31 38 45 53 61 66 72 84 100
COP 87 92 97 105 111 114 114 113 112 107 100
30
Capacity 21 25 30 40 50 60 70 75 80 90 100 106
Input 23 26 29 35 42 48 55 59 63 73 86 95
COP 91 97 103 113 120 125 127 127 126 123 117 112
25
Capacity 22 25 30 40 50 60 70 75 80 90 100 110
Input 22 24 26 32 37 42 48 52 56 65 78 95
COP 100 105 114 127 137 143 145 144 143 138 129 116
20
Capacity 22 25 30 40 50 60 70 75 80 90 100 110
Input 21 22 25 29 34 38 44 46 50 57 65 77
COP 107 113 122 137 148 156 161 162 162 159 153 143
:Standard Condition (Ambient: 35°C, Water Inlet/Outlet: 12/7°C, Full Load)
NOTE:1. Capacity: Cooling Capacity (kW) Input: Total Input Power (Compressor + Fans) (kW) COP: Capacity/Input (kW/kW)2. Operating Conditions: Chilled Water Outlet Temperature: 7°C Water Flow Rate: Constant Condenser Fan: All Fans Running3. Above Table shows the percentage of Capacity, Input and COP based on the standard condition. Therefore, each value can be calculated as below example:
Example: Model RCU1E180AG2B
Standard Condition Ambient: 30°C, Capacity 70%Capacity: 439 kW Capacity: 439 × 0.70 = 307 kWInput: 151 kW Input: 151 × 0.55 = 83 kWCOP: 2.91 COP: 2.91 × 1.27= 3.70 kW
Application Data
Technical Catalogue
TCGB0054 rev.0 - 08/2010132
16.3. Ethylene Glycol Application
¡ Low Ambient Application
Under the condition where the ambient temperature is low in winter, there is a case where the unit and piping will become damaged by freezing during the shutdown periods.
To prevent freezing, it is effective to operate the pump. This Chiller has the pump ON/OFF operation control to avoid freezing. This control become available by connecting Pump Operation circuit. (See Wiring Diagram).
Additionally, in a case where measures such as water raining are difficult, utilise antifreeze mixture of ethylene glycol.
Below table shows the ethylene glycol percentage suggested for the different temperature values.
The table also shows the correction factors, since unit with antifreeze mixture have a slight different performance compared with no glycol.
Example:
− Cooling Capacity with ethylene glycol = Kc × Cooling Capacity without ethylene glycol
− Input Power, Flow Rate and Pressure Drop is calculated in the same way as Cooling Capacity
(Water Outlet Temperature: 5 ~ 15°C)
Minimum Ambient Temperature °C -3 -7 -13 -22
Required Ethylene Glycol Percentage wt% 10 20 30 40
Cooling Capacity Correction Factor Kc 0.99 0.98 0.97 0.96
Input Power Correction Factor Ki 1.00 0.99 0.99 0.98
Flow Rate Correction Factor Kf 1.00 1.01 1.04 1.08
Pressure Drop Correction Factor Kp 1.04 1.11 1.18 1.29
¡ Low Water Temperature Application (Option)
When utilising water less than 5 °C, antifreezing mixture of ethylene glycol shall be input to the water system.
Low water temperature Option is categorised 3 level depending on water outlet temperature.
Therefore, please specify the level when ordering .
Freeze Protection Thermostat has been set in the factory.
Table shows Required Ethylene Glycol percentage for each category.
1. Category
Category Outlet Water Temp. (°C)
Required Ethylene
Glycol (wt%)
Ethylene Glycol
Freezing Temp. (°C)
Low 1 4 ~ 0 20 -7
Low 2 -1 ~ -5 30 -13
Low 3 -6 ~ -10 40 -22
NOTE:Freeze Protection Thermostat is the electronic control, but non-adjustable.
Application Data
Technical Catalogue
16
TCGB0054 rev.0 - 08/2010 133
For the performance, Each value can be given by using following table.
Performance
EthyleneGlycol
(wt%)
OutletWaterTemp.
(°C)
Flow Rate Correction
Factor
(Kf)
Pressure Drop Correction
Factor
(Kp)
Ambient Temperature(°C)
25 30 35 40 43CAP IPT CAP IPT CAP IPT CAP IPT CAP IPT(%) (%) (%) (%) (%) (%) (%) (%) (%) (%)
20
4 1.011 1.15 98 82 93 90 87 97 81 106 78 112
3 1.012 1.16 94 81 89 89 83 96 77 106 75 111
2 1.013 1.17 92 81 86 88 80 96 75 105 72 111
1 1.013 1.18 88 80 82 87 77 95 72 104 69 110
0 1.014 1.19 86 79 80 87 75 94 70 103 66 109
30
-1 1.034 1.30 83 78 78 86 73 94 68 103 64 109
-2 1.035 1.32 80 78 75 86 71 93 65 102 62 108
-3 1.037 1.34 78 77 74 85 68 92 63 102 60 108
-4 1.037 1.36 75 77 71 85 66 92 61 101 58 107
-5 1.038 1.38 74 76 69 84 64 91 59 101 57 106
40
-6 1.073 1.50 71 76 66 84 61 91 57 100 55 106
-7 1.075 1.52 69 75 64 83 59 91 55 100 52 106
-8 1.076 1.54 66 75 61 83 58 90 53 100 50 105
-9 1.076 1.56 63 75 59 83 55 90 51 99 48 105
-10 1.077 1.58 61 74 57 82 53 90 49 99 46 105
NOTE:1. CAP: Cooling Capacity, IPT: Compressor Input2. Capacity and Compressor Input show the percentage of the standard condition Standard condition: Ambient 35°C, Water Inlet/Outlet 12/7°c3. Water Flow Rate and Pressure Drop can be calculated by the Correction Factor Kf and Kp.4. Example: a) Model: RCUE180AG2B b) Standard Condition: Capacity 439kW, Compressor Input 141kW c) Outlet/Inlet Water Temperature -3/2°C, Ambient Temperature 30°C - Ethylene glycol: 30% - Capacity = 439*0.74=325 kW, Compressor Input = 141*0.85=112 kW - Water Flow(m³/h) = Kf*Capacity(kW)*0.86 ∆T (∆T=Inlet Temp.-Outlet Temp.) = 1.037*325*0.86/(2-(-3)) = 58.0 m³/h - Pressure Drop = Kp*Pressure Drop(water) = 1.34*0.0133*58.0 1.849
= 29,3 kPa where, Pressure Drop(water)= α × Qβ : see “Chapter 15.1”
Components Data
Technical Catalogue
17
17. C o m p o n e n t s D a t a
TCGB0054 rev.0 - 08/2010 135
17. Components Data....................................................................................................13517.1. Compressor ......................................................................................................................................... 136
17.2. Condenser and Condenser Fan .......................................................................................................... 136
17.3. Water Cooler ....................................................................................................................................... 137
Contents
Components Data
Technical Catalogue
TCGB0054 rev.0 - 08/2010136
17.1. Compressor
Model 130ASC-Z 170ASC-ZType Semi-HermeticRevolution rpm 2880Displacement m3/h 470.7 591.1Capacity Control % 100~15Pneumatic Pressure
High Side MPa 3.0Low Side MPa 2.0
Motor Type Special Squirrel Cage Three-Phase Motor
Starting Method Star-Delta StartingNominal Output kW 128.0 160.7Poles 2Insulation E
Oil Name JAPAN ENERGY, FREOL UX300Charge Litre 13 15
Net Weight kg 1160 1200
17.2. Condenser and Condenser Fan
Model RCUE-AG2B 180 210 240 280 320 350 400 450
Air
Hea
t Exc
hang
er
Type Multi-Pass Cross Finned tube
Piping
Material Copper Tube
Outer Diameter mm 9.53 9.53 9.53 9.53 9.53 9.53 9.53 9.53
Rows 4/4 3/4 4/4 3/4 4/4 4/4 3/4 4/4
FinMaterial Aluminium
Pitch mm 2.2/2.2 2.1/2.2 2.2/2.2 2.1/2.2 2.2/2.2 2.2/2.2 2.1/2.2 2.2/2.2
Number of condenser 8 8 8 16 16 16 16 16
Maximum Operating Pressure
MPa 3.0
Fan
Fan
Type Direct-Driven Propeller Fan
Quantity 12 16 16 24 24 24 32 32
Outer diameter 644 644 644 644 644 644 644 644
Revolution 990 990 990 990 990 990 990 990
Air Flow m3/min 2660 3600 3600 5320 5320 5320 7200 7200
Motor
Type Drip-proof type enclosure
Starting Method Direct-On-Line Starting
Nominal Output kW 0.38 0.38 0.38 0.38 0.38 0.38 0.38 0.38
Quantity 12 16 16 24 24 24 32 32
Poles 8 8 8 8 8 8 8 8
Components Data
Technical Catalogue
17
TCGB0054 rev.0 - 08/2010 137
17.3. Water Cooler
Type A B C D E
Dimensions
Height (H) mm 875 875 875 875 875
Width (W) mm 386 386 386 386 386
Depth (D) mm 353 399 445 519 589
Maximum Permissible Pressure
Refrigerant Side
MPa 1.8 1.8 1.8 1.8 1.8
Water Side MPa 1.0 1.0 1.0 1.0 1.0
Internal Volume Refrigerant Side
Litre 42.6 48.6 54.6 64.2 73.2
Water Side Litre 43.2 49.2 55.2 64.8 73.8
Material Stainless Steel
Cooling Operation
Dimension
Water In
Refrigerant Out
Refrigerant In
Water Out
Model RCUE-AG2B 180 210 240 280 320 350 400 450
Water Cooler Brazed Type Plate Heat Exchanger
Type (Quantity) C (1) D (1) E (1) A (2) B (2) C (2) D (2) E (2)
TCGB0054 rev.0 - 08/2010 - Printed in Spain
Hitachi is participating in the EUROVENT Certification Programme.Products are as specified in the EUROVENT Directory of CertifiedProducts (up to 600 kW)
Hitachi Air Conditioning Products Europe, S.A. is certified with:ISO 9001 by AENOR; Spain for its Quality Management accordancewith the standardISO 14001 by AENOR, Spain for its Environmental Managementsystems accordance with the standard.
Hitachi units certifies that our product have fulfilled EU consumersafety, health and environmental requirements.
Hitachi Air Conditioning Products Europe, S.A.Ronda Shimizu,1 - Políg. Ind.CanTorrella08233Vacarisses (Barcelona) España