high efficiency chillers screw compressor ash series (r134a).pdf
TRANSCRIPT
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Company BusinessZamil Air Conditioners was founded in 1974 as one of the first air conditioning companies to be established in Saudi Arabiaand today is a leading international manufacturer of air conditioning systems and is Number One in the Middle East.
Zamil Air conditioners manufactures both consumer and central air conditioners and has sales operations in over 55countries in the Middle East, Europe, Africa and Asia.
The company’s operations are structured into four Strategic Business Units (SBUs) supporting five in-house product andservice brands as well as a number of international brands under the OEM sales.
The five in-house brands are Classic, Cooline, CoolCare, Clima Tech and Geoclima.
The four SBUs are:1. Consumer Business Unit supporting Classic, Cooline, GE and OEM brands for consumers.2. Unitary & Applied Business Unit supporting Zamil, Cooline, GE and OEM brands for commercial and industrial customers.3. Zamil CoolCare Business Unit providing industrial, electro mechanical contracting services, HVAC maintenance,
retrofit & operation services and parts.4. Geoclima srl is an independent business supporting other SBUs for their requirements of chillers & double skin AHU’s.
The first three SBUs - Consumer Products, Unitary & Applied Products and CoolCare direct their business operationsfrom the corporate headquarters in Dammam, Saudi Arabia.
Geoclima has its engineering & production operations located at Monfalcone, Italy and has a design center in Austria.
All the four SBUs, while operating independently, supplement each other’s activities in a way that makes synergy work atits best and achieve the corporate goals of maximizing customer satisfaction.
Factories and ProductionsZamil Air Conditioners has two manufacturing plants in Dammam, Saudi Arabia and has one specialty production facilityin Italy operated by Geoclima.
The company can produce up to 550,000 Room Air Conditioners, 300,000 Mini-Split systems and 50,000 Central AirConditioning systems per year.
Quality & Product CertificatesThe Quality systems and policies at Zamil Air Conditioners comply with the required ISO 9001:2008 certification.
Zamil Air Conditioners is the first company in Saudi Arabia to receive the SASO (Saudi Arabia’s Standard Organization)Certificate for Room Air Conditioners. ZAC’s products are also certified with:1. CE (Council of European Community)
2. UL (Underwriters Laboratory)
3. Eurovent (Certified Performance)
4. ETL (Test Facilities)
5. SASO (Saudi Arabian Standards Organization)
6. ISO 9001:2008 (International Organization for Standardization)
7. ASME (American Quality of Mechanical Engineers)
Other awards include the prestigious Engineering Excellence Award of General Electric and the inaugural Prince Mohammedbin Fahd Al Saud Award for Factory Safety.
Our ProductsIn addition to the consumer products such as the Room Air Conditioners (RAC) and the Mini Splits, Zamil Air Condition-ers manufacturers a host of residential, commercial and industrial air conditioners. This broad range extends from theConcealed Units up to 5 TR, the Ducted Splits up to 30 TR, the Packaged Units up to 95 TR, the Single and Double SkinAir Handling Units up to 138,316 CFM and the Water Chillers up to 500 TR cooling capacity.
INDEX
CONTINUING RESEARCH RESULTS IN STEADY IMPROVEMENTS.THEREFORE, THESE SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.
Contents Page
Introduction .............................................................................................................................................. 2
Model decoding ........................................................................................................................................ 3
Unit features, standard specifications & options.................................................................................... 4-8
Physical data ....................................................................................................................................... 9-10
Selection procedure .......................................................................................................................... 11-12
Performance data .............................................................................................................................. 13-16
Electrical data .................................................................................................................................... 17-18
Water side pressure drop ....................................................................................................................... 19
Recommended installation for sensor & water flow switch ..................................................................... 20
Unit dimensions ................................................................................................................................ 21-25
Typical schematic wiring diagram ...................................................................................................... 26-27
Microprocessor controller ....................................................................................................................... 28
Application guidelines ........................................................................................................................ 29-38
Rigging instructions ................................................................................................................................ 39
Installation clearance .............................................................................................................................. 40
Mounting location ................................................................................................................................... 41
Load distribution ..................................................................................................................................... 42
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INTRODUCTION"EcoChill" high efficiency air cooled chiller is designed for the selective customer.Considering most demanding commercial, institutional and industrial applications in high ambientGCC environments, high efficiency, greater reliability, lower noise level and easy maintenance werethe main design drivers for the "EcoChill" chiller.
HIGHER ENERGY EFFICIENCYToday’s energy conservation demands are accelerating. The "EcoChill" chiller offers EER up to10.9 at full load and ILPV up to 14. The "EcoChill" chiller consumes less energy, reduces theoperating cost and positively contributes to a ‘Greener Earth’.EER values exceeding ASHRAE 90.1 minimum requirements.
GREATER RELIABILITY"EcoChill" chillers utilize the latest screw compressor technology from the world's top compressormanufacturers. These helical compressors have few moving parts and are optimized to run withozone friendly R-134a refrigerant resulting in much lower failure rates compared to reciprocatingcompressors.
LOWER NOISE LEVELLower RPM condenser fans along with compressor’s insulated enclosure (optional) ensures lowersound levels with no adverse affect on the chiller capacity or performance.
SIMPLIFIED MAINTENANCE"EcoChill" simplicity of design ensures easy installation and smooth maintenance without compro-mising efficiency. The Microsmart Microprocessors controllers installed in the "EcoChill" controlpanel provides all needed data, parameters and readings (generated locally, remotely or wireless)that are required by the technician or chiller operator.
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FEATURES* "EcoChill" chillers incorporate the newest advanced microprocessor controller. This controller monitors analog and
digital inputs to achieve precise control & protective functions of the air cooled water chiller units. This microproces-sor controller is complete with all the hardware and software necessary to control the chiller unit and insures itsefficiency and reliability.
* Compact unit design and excellent serviceability.
* High Energy Efficiency Ratio (EER) semi-hermetic compact twin screw compressors provided in these units.
* Single point power connection to minimize job site installation cost and time.
* Completely wired control panel with the advanced microprocessor controller provides all the necessary operating andsafety controls.
* Compressors are with part winding start.
* Low noise condenser fans, direct drive at 1000 RPM with rolled form venturi design to eliminate short circuiting ofairflow.
* All fans are die cast aluminum propeller type with aerodynamic design, top discharge, provided with protectivegrille mounted on top panel within the unit casing.
* All condenser fan motors are high efficiency totally enclosed air over type (TEAO) with class ''F'' winding insulation andball bearings. Inherent thermal protection of the automatic reset type and specially designed for outdoor application.
* High efficiency condenser coils with generously designed coil configuration, face areas and utilizing enhanced innergrooved copper tubes.
* All packaged chillers incorporate compact water coolers with enhanced inner grooved copper tubes bundled into a"U" shaped and expanded into a steel tubular sheet which offer efficient water flow as well as heat transfer designresulting in optimal unit performance.
* Designed to conform to ARI standard 550/590 water chilling packages using the vapor compression cycle.
* Designed to conform to ANSI/ASHRAE 15-1994 Safety code for Mechanical Refrigeration.
* Conform to ASHRAE standard 90.1. High Energy Efficiency Ratio (EER) and reliability of these chillers results inaffordable operation and maintenance.
CAPACITY CONTROL"EcoChill" chillers are equipped with stepless capacity control system as standard for very accurate response to loadrequirements and best part load efficiency. Each compressor is equipped with a slider controller that enables to modulatecapacity between 25% to 100%, thus giving a broad range to control total chiller capacity. This system has followingadvantages:
1. Infinite capacity modulation allows the compressor capacity to exactly match the cooling load.
2. Reduce compressor cycling which leads to better operational reliability.
3. Reduce operating cost.
4. For units withHot gas bypass (optional): The unit modulates down to approximately 50% of its compressor lowestunloaded capacity.
STANDARD SPECIFICATIONS
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SEMI-HERMETIC COMPACT TWIN SCREW COMPRESSORSAll compressors are compact semi-hermetic twin screw of the high capacity and efficiency due to its perfect profile formratio 5:6. Simple and robust construction with slider control valve for capacity unloading, suction/discharge shut-offvalves, check valve in discharge gas outlet, oil sight glass, oil fill/drain service valve, directly flanged-on three stage oilseparator with long-life fine filter 10 microns mesh size, robust axial bearings in tandem configuration, suction gas filter,internal pressure relief valve and manual lock-out electronic protection system for thermal motor winding temperature,phase reversal, discharge gas temperature protection controls.
HIGH EFFICIENCY CONDENSER COILSW-configuration condenser coils are corrugated fin and tube type, constructed of enhanced inner grooved seamlesscopper tubes 3/8" dia. & 0.014" (0.35 mm) thick copper tubes, mechanically bonded to aluminum fins for maximumheat transfer efficiency. As an option, copper fins or acrylic coated aluminum fins or other coated coils may beprovided. The fins have full self spacing collars which completely cover each tube. The staggered tube design furtherimproves the thermal efficiency. End plates support sheets are 14 gauge galvanized steel, formed to provide structuralstrength. Each coil is pressure tested in the factory at not less than 450 psi air pressure.
COMPACT DESIGN SHELL AND TUBE WATER COOLERSThe DX shell & tube cooler with removable ‘U’ shaped bundled tubes are made of internally grooved copper tubesexpanded into a heavy steel tubular sheets.
The chiller cooler & baffles are constructed of steel and brass respectively. The coolers are insulated with heavy closedcellular foam insulation (3/4" thick). All chiller barrels are fitted with vent, drain connection and victaulic water pipeconnection as standard.
WATER SIDE REFRIGERANT SIDE
DESIGN PRESSURE,(BAR/PSIG)
TEST PRESSURE,(BAR/PSIG)
DESIGN PRESSURE,(BAR/PSIG)
TEST PRESSURE,(BAR/PSIG)
SHELL & TUBEHEAT
EXCHANGER(COOLER)
16/235 22.8/335 29/426 41.5/610STD
10/147 11.3/165 15.5/228 23.3/342ASME (option)
CABINETAll units are of heavy gauge (G-90) galvanized steel. Steel sheet panels are zinc coated and galvanized by hot dipprocess of lock-forming quality conforming to ASTM A 653 commercial weight G-90 followed by air dry paint or backed onelectrostatic polyester dry powder coat.
CONTROL PANELThe control panel design is equivalent to NEMA 4 (IP55) with hinged door for easy access ensuring dust and weather-proof construction. Internal power and control wiring is neatly routed, adequately anchored and all wires identified withcable markers as per NEC standards applicable to HVAC industry.The electrical controls used in the control panel are UL approved which are reliable in operation at high ambient condi-tions for a long period.
CONDENSER FANSCondenser fans, the impeller and motors are so constructed to form an integral unit. All fan motors shall be three phasewith class ''F'' winding insulation and ball bearings for high ambient application. These fan motors are high efficiencytotally enclosed air over type (TEAO) with inherent thermal protection of automatic reset type.
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MICROPROCESSOR CONTROLLERThe microprocessor controller works on the state of art microprocessor technology. This controller monitors analog anddigital inputs to achieve precise control & safety functions of the unit.The Software works on the Proportional Integral Derivative (PID) algorithm for precise control logic.The simple to use push button keyboard allows accessing to the operating conditions, control set points & alarm historythat are clearly displayed on a multi-line back illuminated LCD panel.
An easy to install serial port/modem option allows remote monitoring of the operating parameters. With correspondingwindows software, the system allows data to be viewed in tabular or graphic format as well as interact with system set up.This chiller controller is compatible with the Building Management System (BMS) BACNET/MODBUS protocols throughcorresponding optional gateway interfaces.
It is also compatible with GSM protocol through GSM optional gateway that sends up to 3 mobile phone SMS messageswhenever alarm take place, indicating the type of alarm, the corresponding compressor, the related chiller and whichlocation.
The microprocessor consists of the following hardware:1. User Interface Board: Provided with simple to use push button keyboard and menu driven software to access operat-
ing conditions, control set points & alarm history that are clearly displayed on the LCD panel.2. Main Board: This controls up to two (2) compressor system.3. Auxiliary Boards: Required for controlling an additional two (2) or more compressors.4. Remote Monitoring System [Optional]: The micro controller is complete with all hardware and software necessary to
remotely monitor and control the chiller unit.
Display Information:In the normal operating mode the 20 x 4 characters LCD panel display the system status, the temperature of the waterinlet & outlet, the set point, run time of the compressor & the alarm history.
Easily accessible measurements for each circuit include the following:
· Suction and discharge temperatures
· Suction, discharge and oil level (optional)
· Water inlet/outlet temperatures
· Compressor status
· Fan status
· Liquid line solenoid status
· Unit/Compressor run timeThe control temperature is continuously displayed on the 3 Digit 7 segments LED Display. The 3 LED lights indicate thePower ON, Menu adjustment and Fault.
System Protection:
The following system protection is provided to ensure system reliability:
· Compressor winding overheating
· Low suction pressure
· High discharge pressure
· Freeze protection
· Low oil level (optional)
· Sensor error
· Time delay – Anti recycle time for compressor
· Serial communication error
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STANDARD CONTROL & SAFETY DEVICESMICROPROCESSOR CONTROLLER: This controller monitors analog and digital inputs to achieve precise control &safety functions of the unit.
COMPRESSOR IN-BUILT PROTECTION DEVICE: Protect the compressor by monitoring:
A) Motor winding temperature in case of overload.
B) Discharge gas temperature in case of overheating.
C) Phase reversal for direction of rotation.
STARTERS: The starter is operated by the control circuit and provides power to the compressor motors. These devicesare rated to handle safely both RLA and LRA of motors.
COMPRESSOR CIRCUIT BREAKERS: Protects against compressor branch circuit fault. When tripped, the breakeropens the power supply to the compressor and send digital signal to control circuit through auxiliary contacts.
CRANKCASE HEATERS: Each compressor has immersion type crankcase heater. The compressor crankcase heateris always on when the compressors are de-energized. This protect the system against refrigerant migration, oil dilutionand potential compressor failure.
HIGH PRESSURE SWITCH: This switch provides an additional safety protection in the case of excessive dischargepressure.
STANDARD ACCESSORIESUNIT ON-OFF SWITCH: ON-OFF switch is provided for manually switching the unit control circuit.
INDICATOR LIGHTS: LED lights indicates power ON to the units, MENU adjustment and FAULT indications due to tripon safety devices.
ELECTRONIC EXPANSION VALVE: Electronic expansion valve is used to regulate the refrigerant flow to the watercooler and maintain a constant superheat and load optimization.
FILTER DRIER (REPLACEABLE CORE TYPE): Refrigerant circuits are kept free of harmful moisture, sludge, acidsand oil contaminating particles by the filter drier.
SIGHT GLASS: A moisture indicating sight glass installed in the liquid line. An easy-to-read color indicator showsmoisture contents and provides a mean for checking the system refrigerant charge.
LIQUID LINE SOLENOID VALVE: Closes when the compressor is off to prevent any liquid refrigerant from accumulatingin the water cooler during the off cycle.
UNDER & OVER VOLTAGE AND PHASE PROTECTION: Protects against low & high incoming voltage as well assingle phasing, phase reversal and phase imbalance by de-energizing the control circuit. It is an automatic reset device,but it can be set up for manual reset.
CONTROL CIRCUIT TRANSFORMER: On 460V-3Ph-60Hz power supply factory mounted and wired control circuittransformer is furnished eliminating the need for running a separate 220 volt control circuit power supply.
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OPTIONS(All options are at extra cost. Please check with your nearest dealer/sales office)
HOT GAS BYPASS SYSTEM: Hot gas bypass is provided on the lead circuit to permit operation of the system down to50% of its unloaded capacity. Under low ambient condition, it controls temperature by eliminating the need to cycle thecompressor on and off, ensuring narrow temperature swing and lengthen the life span of the compressor.
WATER FLOW SWITCH: Paddle type field adjustable flow switch for water cooler circuits. Interlock into unit safetycircuits so that the unit will remain off until water flow is determine.
UNIT MOUNT SPRING ISOLATORS: The spring elements are complete with high frequency vibration control noisepads and an adjustable top load plate with leveling bolts.
LIQUID COOLERS: ASME code stamped liquid cooler.
PRESSURE GAUGES: Suction & discharge pressures gauges.
NON-FUSED MAIN DISCONNECT SWITCHES: De-energize power supply during servicing/repair works as well as withdoor interlock.
CONDENSER COIL GUARD: Protect the condenser coil from physical damage.
COMPRESSOR/COOLER GUARD: Protect the compressor from vandalism.
COMPRESSOR OIL LEVEL SWITCH: This monitors the oil level inside the compressor.
COMPRESSOR ENCLOSURE BOX: Reduce compressor operating noise and keep the compressor clean.
FLANGED COOLER CONNECTION: Easy on-site piping connections.
COOLER HEATER WRAPPED: Prevent freezing up of water on low ambient temperature.
COPPER FINS/TUBES CONDENSER COILS: For seashore salty corrosive environments.
COATED COPPER/ALUMINUM FINS CONDENSER COILS: For seashore or acid corrosive environments.
BMS: BACNET, MODBUS, GSM and remote display panel.
POWER LINE ANALYZER: Performs motor current limitation. Protects against high motor current & over/under voltage.
HAND HELD CONTROLLER: Enables the chiller technician to monitor and serve the chiller by plugging this portablewired controller into the chiller controller. With built-in magnets, it provides convenient access for chiller status diagnosesand trouble shooting.
HAND HELD CONTROLLER
NOTES: 1. All compressors with slider control valve unloading.2. All compressors operate at 3500 RPM @ 60Hz.3. Cooler vent and drain size are 1/2" MPT.4. All coolers are single face refrigerant connection.5. Sound pressure level : ±2dBA.
UNIT SIZE ASh100B ASh130B ASh145B ASh160B ASh185B ASh200B ASh215B
COMPRESSOR
PART NUMBER 208/230V-3Ph-60Hz 800-683-13 (2) 800-683-16 (2) 800-683-19 (2) 800-683-13 (3) 800-683-16 (3) 800-683-16 (3) 800-683-13 (4)
380V-3Ph-60Hz 800-683-14 (2) 800-683-17 (2) 800-683-20 (2) 800-683-14 (3) 800-683-17 (3) 800-683-17 (3) 800-683-14 (4)
460V-3Ph-60Hz 800-683-15 (2) 800-683-18 (2) 800-683-21 (2) 800-683-15 (3) 800-683-18 (3) 800-683-18 (3) 800-683-15 (4)
NUMBER OF COMPRESSORS 2 2 2 3 3 3 4
OIL CHARGE PER COMPRESSOR, Liters 15 22 22 15 22 22 15
% FULL LOAD CAPACITY CONTROL 100-25 100-25 100-25 100-16 100-16 100-16 100-12
MOTOR OVERLOAD PROTECTION (INTERNAL) ELECTRONIC
OIL LUBRICATION INJECTION
REFRIGERANT R-134a
EXPANSION VALVE DEVICE ELECTRONIC EXPANSION VALVE
CONTROL VOLTAGE 220V-1Ph-60Hz
CONDENSERCONDENSER COIL Tube Dia.- Rows - Fins per inch 3/8–4–14 3/8–3–14 3/8–4–14 3/8–4–14 3/8–4–14 3/8–4–14 3/8–3–14
Total face area, Sq. ft. 140 175 175 210 276 276 304
AIRFLOW, CFM 87032 116570 108790 130548 145356 145356 192048
NUMBER OF FAN/FAN DIA.,mm 8/800 10/800 10/800 12/800 12/800 12/800 16/800
FAN MOTOR RPM @ 230/380/460-3-60 1026/1025/1070 1026/1025/1070 1026/1025/1070 1026/1025/1070 1026/1025/1070 1026/1025/1070 1026/1025/1070
COOLERCOOLER PART NUMBER 800-732-21 800-732-41 800-732-41 800-732-11 800-732-11 800-732-11 800-732-41 (2)
SHELL DIAMETER, mm 324 406 406 406 406 406 406
LENGTH, mm 2698 2741 2741 2717 2717 2717 2741
TOTAL WATER HOLDING VOLUME, Liters 129.5 161.7 161.7 184.4 184.4 184.4 161.7
WATER IN/OUT PIPE DIA.mm 125 150 150 150 150 150 150
ECONOMIZERPART NUMBER N.A. N.A. N.A. N.A. N.A. 800-516-90 N.A.
EXPANSION VALVE DEVICE N.A. N.A. N.A. N.A. N.A. T.E.V. N.A.
GENERALREFRIGERANT CHARGE PER COMP., kg (COMP. 1/2) 51 64 72 51 60 67/60 53
SOUND PRESSURE LEVEL, dBA (3m./5m./10m.) 81.6/78.1/72.8 74.5/71/65.7 74.9/71.4/66.1 83.4/79.9/74.6 75.4/71.8/66.6 75.4/71.8/66.6 84.6/81.1/75.8
SHIPPING /OPERATING WEIGHTS (Aluminum coils), kg 3785/3914 5040/5202 5195/5357 5790/5974 7149/7333 7186/7370 7969/8292
SHIPPING /OPERATING WEIGHTS (Copper coils), kg 4231/4360 5425/5587 5754/5916 6460/6644 8029/8213 8066/8250 8638/8961
PHYSICAL DATA
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UNIT SIZE ASh240B ASh260B ASh300B ASh320B ASh360B ASh370B ASh400B ASh415B
COMPRESSOR
PART NUMBER 208/230V-3Ph-60Hz 800-683-16 (4) 800-683-13 (6) 800-683-16 (6) 800-683-16 (6) 800-683-19 (6) 800-683-19 (6)
380V-3Ph-60Hz 800-683-17 (4) 800-683-14 (6) 800-683-17 (6) 800-683-17 (6) 800-683-20 (6) 800-683-20 (6)
460V-3Ph-60Hz 800-683-18 (4) 800-683-15 (6) 800-683-18 (6) 800-683-18 (6) 800-683-21 (6) 800-683-21 (6)
NUMBER OF COMPRESSORS 4 4 6 6 6 6 6 6
OIL CHARGE PER COMPRESSOR, Liters 22/15 22 15 22/15 22 22 22 22
% FULL LOAD CAPACITY CONTROL 100-12 100-12 100-8 100-8 100-8 100-8 100-8 100-8
MOTOR OVERLOAD PROTECTION (INTERNAL) ELECTRONIC
OIL LUBRICATION INJECTION
REFRIGERANT R-134a
EXPANSION VALVE DEVICE ELECTRONIC EXPANSION VALVE
CONTROL VOLTAGE 220V-1Ph-60Hz
CONDENSERCONDENSER COIL Tube Dia.- Rows - Fins per inch 3/8–4–14 3/8–4–14 3/8–4–14 3/8–4–14 3/8–4–14 3/8–4–14 3/8–4–14
Total face area, Sq. ft. 304 304 430.7 521.3 521.3 521.3 521.3 521.3
AIRFLOW, CFM 186128 180560 220770 232398 269038 269038 269038 269038
NUMBER OF FAN/FAN DIA.,mm 16/800 16/800 18/800 18/800 22/800 22/800 22/800 22/800
FAN MOTOR RPM @ 230/380/460-3-60 1026/1025/1070 1026/1025/1070 1026/1025/1070 1026/1025/1070 1026/1025/1070 1026/1025/1070 1026/1025/1070 1026/1025/1070
COOLERCOOLER PART NUMBER 800-732-41 (2) 800-732-41 (2) 800-732-73 (2) 800-732-54 (2) 800-732-54 (2) 800-732-11 (2) 800-732-11 (2) 800-732-65 (2)
SHELL DIAMETER, mm 406 406 406 406 406 406 406 457
LENGTH, mm 2741 2741 2717 2741 2741 2717 2717 2762
TOTAL WATER HOLDING VOLUME, Liters 161.7 161.7 161.7 161.7 161.7 184.4 184.4 252
WATER IN/OUT PIPE DIA.mm 150 150 150 150 150 150 150 200
ECONOMIZERPART NUMBER N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.
EXPANSION VALVE DEVICE N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.
GENERALREFRIGERANT CHARGE PER COMP., kg (COMP. 1/2) 64/53 64 53 64/53 64 64 67 72
SOUND PRESSURE LEVEL, dBA (3m./5m./10m.) 82.3/78.7/73.5 76.6/73/67.8 86.3/82.7/77.5 84.7/81.2/75.9 78/74.5/69.2 78/74.5/69.2 78.6/75.1/69.8 78.6/75.1/69.8
SHIPPING /OPERATING WEIGHTS (Aluminum coils), kg 8814/9137 9631/9954 10768/11091 11912/12235 13496/13819 13703/14072 13789/14158 14221/14725
SHIPPING /OPERATING WEIGHTS (Copper coils), kg 9633/9956 10601/10924 12142/12465 13574/13897 15158/15481 15365/15734 15451/15820 15883/16387
NOTES: 1. All compressors with slider control valve unloading.2. All compressors operate at 3500 RPM @ 60Hz.3. Cooler vent and drain size are 1/2" MPT.4. All coolers are single face refrigerant connection.5. Sound pressure level : ±2dBA.
PHYSICAL DATA
800-683-16 (2)800-683-13 (2)
800-683-18 (2)800-683-15 (2)
800-683-17 (2)800-683-14 (2)
3/8–4–143/8–3–14
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800-683-16 (2)800-683-13 (4)
800-683-18 (2)800-683-15 (4)
800-683-17 (2)800-683-14 (4)
DESIGN REQUIREMENTSThe following design requirements must be known to select a package chiller.1. Required cooling capacity in tons2. Leaving chilled water temperature in 0F (LCWT)3. Chilled water flow rate in GPM4. Chilled water cooling range in 0F (water in temp. _ water out temp.)5. Design ambient temperature6. Minimum ambient temperature7. Altitude8. Electrical power supply
SAMPLE SELECTIONSelect an Air Cooled high efficiency Packaged chiller for the following conditions:Required system capacity is 140 tons at 540F entering chilled waterand 440F leaving water. Design ambient temperature is 950F.Altitude is 2000 feet above sea level.Water cooler fouling factor is 0.00010. Power supply: 380V-3Ph-60Hz.
STEP-1: UNIT SELECTIONEntering the capacity performance data at given LCWT and ambient temperature.ASh145B chiller unit at sea level will produce 142.9 tons and 141.6 kW compressorpower input at 440F leaving chilled water temperature with 100F water temperaturedifference and 950F ambient temperature.
For the conditions required, the unit actual cooling capacity when corrected foraltitude (0.99) and fouling factor (1.0).Capacity = 142.9x0.99x1.0 = 141.4 Tons, which then exceeds the requirements.So the selection is correct.
STEP-2: CHILLED WATER FLOW (GPM):
Water GPM = Required capacity (Tons) x 24
= 140 x 24
= 336 GPM Cooling Range, ∆T 100F
SELECTION PROCEDURE (English units)
ELEVATION ABOVESEA LEVEL (FT.)
CAPACITYCORRECTION
FACTOR0
200040006000800010000
1.000.990.980.970.960.95
TABLE - 2
EVAPORATOR FOULINGFACTOR (HR-FT2-0F/BTU)
0.000100.000250.000500.000750.00100
CAPACITYCORRECTION
FACTOR1.0000.9920.9780.9650.951
POWERINPUT
FACTOR1.0000.9970.9900.9840.978
ARISTANDARDS
ARI-550/590ARI-550/590ARI-550/590ARI-550/590ARI-550/590
Referring to pressure drop chart (page # 19), pressure drop at 336 GPM = 8.9 ft. of water for selected model.NOTE: The total flow rate should be divided by 2 for models ASh215B - ASh415B to find out the total pressure drop.
STEP-3: ELECTRICALRefer to electrical data at 380V-3Ph-60Hz, the main power wire size for ASh145B is to be sized for a minimum circuitampacity (MCA) of 361 Amps and maximum over current protection (MOCP) of 506 Amps.
STEP-4: CHILLED WATER PUMP SELECTIONFor chilled water pump selection, add all pressure drop in the closed chilled water loop piping to the pressure dropcalculated in step 2.
STEP-5: LCWT CORRECTIONRefer to table-3: Add correction factor to design leaving chilled water temperature (LCWT) when chilled water tempera-ture range is above 100F and subtract correction from design leaving chilled water temperature (LCWT) when watertemperature range is below 100F.EXAMPLE:If LCWT rise is 12.50F, enter correction curve at 12.50F and read the correction factor of 0.2. The corrected LCWT is44+0.2 = 44.20F.
NOTE: 1. When the chilled water temperature rise is less than 50F, the high water flow rate will result to excessivepressure drop. In such cases, contact factory for special selection of a cooler with wider baffle spacing.
2. Please refer to water pressure drop curves.
TABLE - 1
11
TABLE - 3CHILLED WATER TEMPERATURE RISE (0F)
CO
RR
ECTI
ON
FA
CTO
R (0 F)
0
-0.2
-0.45 10
+0.4
+0.2
+0.6
15 20
DESIGN REQUIREMENTSThe following design requirements must be known to select a proper package chiller.1. Required cooling capacity in kilowatt (kW)2. Leaving chilled water temperature in 0C (LCWT)3. Chilled water flow rate in LPS4. Chilled water cooling range in 0C (water in temp. _ water out temp.)5. Design ambient temperature6. Minimum ambient temperature7. Altitude8. Electrical power supply
SAMPLE SELECTIONSelect an Air Cooled high efficiency Packaged chiller for the following conditions:Required system capacity is 480 kW at 120C entering chilled waterand 60C leaving water. Design ambient temperature is 350C.Altitude is 600 meter above sea level.Water cooler fouling factor is 0.000018. Power supply: 380V-3Ph-60Hz.
STEP-1: UNIT SELECTIONEntering the capacity performance data at given LCWT and ambient temperature.ASh145B chiller unit at sea level will produce 497.3 kW and 141.1 kW compressorpower input at 60C leaving chilled water temperature with 60C water temperaturedifference and 350C ambient temperature.
For the conditions required, the unit actual cooling capacity when corrected foraltitude (0.99) and fouling factor (1.0).Capacity = 497.3x0.99X1.0 = 492.3 kW, which then exceeds the requirements.So the selection is correct.
STEP-2: CHILLED WATER FLOW (LPS):
Water LPS = Required capacity (kW) x 0.239
= 480 x 0.239
= 19.1 LPS Cooling Range, ∆T 60C
SELECTION PROCEDURE (Metric units)
ELEVATION ABOVESEA LEVEL (Meter)
CAPACITYCORRECTION
FACTOR0
6001200180024003000
1.000.990.980.970.960.95
Referring to pressure drop chart (page # 19), pressure drop at 19.1 LPS = 22.5 kPa for selected model.NOTE: The total flow rate should be divided by 2 for models ASh215B - ASh415B to find out the total pressure drop.
STEP-3: ELECTRICALRefer to electrical data at 380V-3Ph-60Hz, the main power wire size for ASh145B is to be sized for a minimum circuitampacity (MCA) of 361 Amps and maximum over current protection (MOCP) of 506 Amps.
STEP-4: CHILLED WATER PUMP SELECTIONFor chilled water pump selection, add all pressure drop in the closed chilled water loop piping to the pressure dropcalculated in step 2.
STEP-5: LCWT CORRECTIONRefer to table-3: Add correction factor to design leaving chilled water temperature (LCWT) when chilled water tempera-ture range is above 60C and subtract correction from design leaving chilled water temperature (LCWT) when watertemperature range is below 60C.EXAMPLE:If LCWT rise is 7.40C, enter correction curve at 7.40C and read the correction factor of 0.11. The corrected LCWT is60C+0.11 = 6.110C.
NOTE: 1. When the chilled water temperature rise is less than 30C, the high water flow rate will result to excessivepressure drop. In such cases, contact factory for special selection of a cooler with wider baffle spacing.
2. Please refer to water pressure drop curves.
TABLE - 2
EVAPORATOR FOULINGFACTOR (M2-0C/W)
0.0000180.0000440.0000880.0001320.000176
CAPACITYCORRECTION
FACTOR1.0000.9920.9780.9650.951
POWERINPUT
FACTOR1.0000.9970.9900.9840.978
ARISTANDARDS
ARI-550/590ARI-550/590ARI-550/590ARI-550/590ARI-550/590
TABLE - 1
12
TABLE - 3CHILLED WATER TEMPERATURE RISE (0C)
CO
RR
ECTI
ON
FA
CTO
R (0 C
)
+0.33
+0.22
+0.11
-0.11
-0.2254 6 7 8
0
109
950 F
AM
BIE
NT
TEM
PER
ATU
RE
1050 F
AM
BIE
NT
TEM
PER
ATU
RE
1150 F
AM
BIE
NT
TEM
PER
ATU
RE
1250 F
AM
BIE
NT
TEM
PER
ATU
RE
1300 F
AM
BIE
NT
TEM
PER
ATU
RE
LEAV
ING
CHIL
LED
WAT
ER T
EMP.
(LCW
T)
PER
FOR
MA
NC
E D
ATA
(Eng
lish
units
)
UN
ITSI
ZECA
P.(T
ons)
LEG
END
:kW
-C
ompr
esso
r pow
er in
put
GPM
-G
allo
ns P
er M
inut
eEE
R-
Ene
rgy
Effi
cien
cy R
atio
NO
TES:
1.P
acka
ged
chill
ers
are
rate
d w
ith A
RI s
tand
ard
550/
590.
2.P
erfo
rman
ce d
ata
are
base
d on
100 F
wat
er ra
nge
in e
vapo
rato
r.3.
Rat
ings
are
bas
ed o
n 0.
0001
0 (h
r-ft2 -
0 F/B
tu) f
oulin
g fa
ctor
for e
vapo
rato
r.
AS
h 10
0B97
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AS
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5.5
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AS
h 16
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h 18
5B17
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AS
h 21
5B20
0.5
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AS
h 24
0B22
122
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AS
h 26
0B24
0.6
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AS
h 30
0B28
4.3
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AS
h 32
0B30
4.7
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AS
h 36
0B34
1.3
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h 37
0B34
0.8
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AS
h 40
0B37
1.4
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AS
h 41
5B39
8.2
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AS
h 10
0B99
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6
AS
h 13
0B12
4.6
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AS
h 14
5B13
9.2
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AS
h 16
0B15
014
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9.7
AS
h 18
5B17
8.9
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310
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316
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4.6
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8
AS
h 20
0B18
7.7
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AS
h 21
5B20
6.2
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8.2
AS
h 24
0B22
7.3
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2.7
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8.6
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6
AS
h 26
0B24
7.4
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AS
h 30
0B29
2.1
296.
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AS
h 32
0B31
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h 36
0B35
0.4
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h 37
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4.5
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h 40
0B38
6.2
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AS
h 41
5B40
6.9
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h 10
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h 13
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h 14
5B14
2.9
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h 16
0B15
5.6
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h 18
5B18
5.6
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AS
h 20
0B19
4.4
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h 21
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h 24
0B23
4.2
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h 26
0B25
4.6
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h 30
0B29
9.6
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h 32
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0.7
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2
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h 36
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AS
h 37
0B36
7.8
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AS
h 40
0B40
0.4
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h 41
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4.7
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1978
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746.
8
40 0 F
44 0 F
CO
MP.
kWEE
RW
ATER
FLO
W(G
PM)
CAP.
(Ton
s)C
OM
P.kW
EER
WAT
ERFL
OW
(GPM
)CA
P.(T
ons)
CO
MP.
kWEE
RW
ATER
FLO
W (G
PM)
CAP.
(Ton
s)C
OM
P.kW
EER
WAT
ERFL
OW
(GPM
)CA
P.(T
ons)
CO
MP.
kWW
ATER
FLO
W(G
PM)
EER
4.D
irect
inte
rpol
atio
n is
per
mis
sibl
e. D
o no
t ext
rapo
late
.5.
kW p
ower
inpu
t is
for c
ompr
esso
r onl
y.6.
EE
R f
or e
ntire
uni
t. R
efer
to e
lect
rical
dat
a fo
r fan
kW
.
42 0 F
13
46 0 F
50 0 F
48 0 F
14
950 F
AM
BIE
NT
TEM
PER
ATU
RE
1050 F
AM
BIE
NT
TEM
PER
ATU
RE
1150 F
AM
BIE
NT
TEM
PER
ATU
RE
1250 F
AM
BIE
NT
TEM
PER
ATU
RE
1300 F
AM
BIE
NT
TEM
PER
ATU
RE
LEAV
ING
CHIL
LED
WAT
ER T
EMP.
(LCW
T)
PER
FOR
MA
NC
E D
ATA
(Eng
lish
units
)
UN
ITSI
ZECA
P.(T
ons)
LEG
END
:kW
-C
ompr
esso
r pow
er in
put
GPM
-G
allo
ns P
er M
inut
eEE
R-
Ene
rgy
Effi
cien
cy R
atio
NO
TES:
1.P
acka
ged
chill
ers
are
rate
d w
ith A
RI s
tand
ard
550/
590.
2.P
erfo
rman
ce d
ata
are
base
d on
100 F
wat
er ra
nge
in e
vapo
rato
r.3.
Rat
ings
are
bas
ed o
n 0.
0001
0 (h
r-ft2 -
0 F/B
tu) f
oulin
g fa
ctor
for e
vapo
rato
r.
AS
h 10
0B10
5.4
9911
.06
252.
999
.610
9.7
9.56
239
93.4
122.
28.
1522
4.2
86.9
136.
46.
8720
8.5
83.4
144.
26.
2820
0.2
AS
h 13
0B13
2.9
125.
911
319
124.
814
0.6
9.38
299.
611
6.4
157.
57.
9127
9.5
107.
717
6.8
6.6
258.
610
3.2
187.
26.
0124
7.8
AS
h 14
5B14
7.6
143.
410
.935
4.4
138.
515
8.6
9.35
332.
512
8.8
175.
77.
9430
9.1
118.
419
4.5
6.65
284.
211
2.9
204.
66.
0627
1.1
AS
h 16
0B16
1.3
149.
811
.21
387.
115
1.9
165.
69.
6736
4.5
141.
918
48.
2334
0.5
131.
420
5.1
6.91
315.
312
5.9
216.
66.
3130
2.1
AS
h 18
5B19
2.3
182.
911
.22
461.
618
120
4.4
9.55
434.
316
9.1
229.
58.
0440
5.8
156.
725
8.1
6.69
376.
115
0.3
273.
76.
0836
0.8
AS
h 20
0B20
120
010
.82
482.
419
1.7
228.
29.
1646
0.1
181.
926
1.6
7.67
436.
517
1.5
300.
26.
3741
1.6
166.
132
1.5
5.79
398.
6
AS
h 21
5B22
1.5
206.
411
.22
531.
620
8.2
227.
99.
6749
9.6
194.
125
2.8
8.22
465.
917
9.3
280.
96.
9143
0.2
171.
529
6.2
6.3
411.
7
AS
h 24
0B24
3.3
230.
411
.19
583.
922
8.5
256
9.57
548.
421
328
5.6
8.09
511.
319
6.9
319
6.76
472.
418
8.5
337.
26.
1545
2.4
AS
h 26
0B26
3.9
255
11.0
963
3.5
247.
828
4.8
9.43
594.
723
131
9.1
7.93
554.
421
3.5
357.
96.
651
2.5
204.
637
9.1
5.99
490.
9
AS
h 30
0B30
930
3.2
10.9
974
1.7
291.
133
6.1
9.43
698.
727
2.2
374.
47.
9965
3.2
252
417.
96.
6960
4.9
241.
544
1.6
6.09
579.
6
AS
h 32
0B33
0.2
322.
811
.09
792.
431
1.1
359.
19.
4974
6.7
291
401.
68.
0169
8.4
269.
844
9.9
6.68
647.
525
8.7
476.
36.
0862
1
AS
h 36
0B36
7.5
367.
410
.77
882
346
411.
59.
1683
0.5
323.
846
37.
6977
7.1
300.
452
1.5
6.4
720.
928
8.2
553.
55.
8169
1.8
AS
h 37
0B38
137
2.3
11.0
391
4.4
358.
241
6.4
9.38
859.
633
4.3
467.
57.
8880
2.4
309.
552
5.6
6.54
742.
829
6.7
557.
25.
9471
2.1
AS
h 40
0B41
4.3
437.
210
.38
994.
438
8.2
484.
18.
8593
1.7
360.
353
6.7
7.47
864.
833
0.6
594.
76.
2379
3.3
314.
962
5.6
5.66
755.
8
AS
h 41
5B42
6.1
442.
210
.56
1022
.739
9.7
489.
69.
0295
9.3
371.
454
2.5
7.63
891.
534
1.2
600.
76.
3781
932
5.3
631.
85.
7978
0.8
AS
h 10
0B11
010
0.8
11.3
726
4.1
104.
311
1.7
9.86
250.
498
.212
4.2
8.45
235.
791
.713
8.5
7.16
220.
188
.314
6.2
6.56
211.
8
AS
h 13
0B13
8.7
128.
111
.31
332.
813
0.5
142.
99.
6731
3.3
122.
116
08.
1829
2.9
113.
217
9.3
6.85
271.
810
8.7
189.
86.
2426
0.8
AS
h 14
5B15
3.7
145.
611
.19
368.
814
4.5
161.
19.
6234
6.8
134.
717
8.4
8.18
323.
212
4.2
197.
46.
8829
811
8.7
207.
66.
2828
4.8
AS
h 16
0B16
715
211
.46
400.
815
7.3
167.
89.
937
7.6
147.
218
6.3
8.44
353.
213
6.4
207.
27.
1132
7.3
130.
721
8.6
6.5
313.
8
AS
h 18
5B19
8.9
185.
111
.47
477.
518
7.4
206.
89.
7944
9.7
175.
323
28.
2542
0.7
162.
726
0.6
6.89
390.
515
6.2
276.
26.
2737
5
AS
h 20
0B20
7.4
202.
111
.06
497.
819
823
0.6
9.37
475.
218
8.1
264.
17.
8645
1.4
177.
530
2.9
6.54
426.
117
2.1
324.
25.
9541
2.9
AS
h 21
5B23
1.9
210.
611
.54
556.
621
8.3
232.
29.
9752
3.9
203.
925
7.1
8.51
489.
418
8.7
285.
17.
1745
2.9
180.
730
0.2
6.56
433.
8
AS
h 24
0B25
4.3
234.
711
.561
0.2
239.
326
0.6
9.86
574.
222
3.5
290.
38.
3653
6.5
207
323.
87.
0149
6.9
198.
534
1.9
6.39
476.
4
AS
h 26
0B27
5.4
259.
511
.39
661
259.
128
9.6
9.71
621.
824
2.1
324.
28.
1958
1.1
224.
436
3.2
6.84
538.
621
5.3
384.
46.
2351
6.7
AS
h 30
0B32
1.2
308.
211
.25
770.
930
3.1
341.
49.
6872
7.6
284
379.
88.
2368
1.5
263.
642
3.3
6.91
632.
625
2.9
446.
86.
3160
7
AS
h 32
0B34
2.7
327.
611
.36
822.
532
3.5
364.
49.
7477
6.5
303.
340
78.
2572
828
1.9
455.
46.
9167
6.7
270.
848
1.6
6.3
649.
9
AS
h 36
0B38
0.5
372.
111
.02
913.
135
9.2
416.
89.
3986
233
6.8
468.
57.
9280
8.4
313.
452
7.3
6.61
752.
230
1.3
559.
36.
0172
3.2
AS
h 37
0B39
437
7.1
11.2
894
5.7
370.
842
1.5
9.6
889.
934
6.6
472.
88.
0883
1.8
321.
453
0.9
6.73
771.
230
8.3
562.
66.
1274
0
AS
h 40
0B42
7.9
443
10.5
910
2740
1.4
490.
49.
0596
3.4
373.
154
3.3
7.65
895.
434
2.8
601.
66.
3982
2.7
326.
863
2.7
5.81
784.
4
AS
h 41
5B44
4.2
450
10.8
310
6641
8.4
498.
59.
2910
04.2
390.
755
2.5
7.89
937.
836
0.9
611.
96.
6286
6.2
345.
264
3.5
6.04
828.
5
AS
h 10
0B11
410
2.3
11.6
327
3.6
108
113.
110
.09
259.
210
1.6
125.
68.
6524
3.8
94.7
139.
77.
3322
7.3
91.1
147.
46.
7221
8.7
AS
h 13
0B14
3.4
129.
911
.55
344.
313
514
4.8
9.89
324.
112
6.3
161.
98.
3730
311
7.1
181.
27.
0228
1.1
112.
419
1.6
6.4
269.
7
AS
h 14
5B15
9.1
147.
711
.45
381.
814
9.6
163.
29.
8535
913
9.4
180.
58.
3833
4.6
128.
619
9.6
7.05
308.
512
2.8
209.
86.
4429
4.8
AS
h 16
0B17
2.5
154.
111
.69
413.
916
2.7
170
10.1
239
0.4
152.
318
8.4
8.65
365.
414
1.3
209.
37.
333
913
5.5
220.
66.
6832
5.2
AS
h 18
5B20
5.2
187.
311
.71
492.
519
3.5
209.
210
464.
318
1.2
234.
48.
4543
516
8.5
263.
17.
0740
4.4
161.
927
8.7
6.44
388.
6
AS
h 20
0B21
3.5
204.
111
.28
512.
520
423
2.8
9.57
489.
619
3.9
266.
68.
0446
5.5
183.
330
5.4
6.7
439.
917
7.7
326.
86.
142
6.5
AS
h 21
5B23
9.4
213.
611
.77
574.
622
5.3
235.
210
.17
540.
821
0.4
259.
98.
6950
519
4.7
287.
77.
3446
7.2
186.
430
2.7
6.71
447.
5
AS
h 24
0B26
2.7
238.
111
.73
630.
524
7.2
264
10.0
759
3.3
231
293.
78.
5555
4.3
213.
932
77.
1851
3.3
205
345
6.55
492
AS
h 26
0B28
4.8
263.
211
.63
683.
626
829
3.5
9.92
643.
125
0.4
328.
18.
3860
123
2.1
367.
17
557
222.
638
8.1
6.38
534.
2
AS
h 30
0B33
2.6
313
11.4
979
8.3
313.
834
6.2
9.9
753.
229
3.9
384.
48.
4270
5.4
272.
742
7.4
7.09
654.
526
1.6
450.
76.
4762
7.9
AS
h 32
0B35
5.2
332.
511
.62
852.
633
5.3
369.
49.
9780
4.8
314.
341
1.9
8.45
754.
329
2.1
460
7.09
701
280.
548
66.
4767
3.3
AS
h 36
0B39
537
7.5
11.3
947.
937
2.8
422.
39.
6389
4.7
349.
647
4.1
8.13
839.
132
5.4
532.
86.
7978
0.9
312.
856
4.7
6.19
750.
8
AS
h 37
0B40
6.4
381.
811
.51
975.
338
2.8
426.
49.
8191
8.8
358.
347
88.
2786
033
2.7
536.
26.
9179
8.6
319.
556
7.9
6.29
766.
9
AS
h 40
0B44
0.7
448.
510
.78
1057
.741
3.9
496.
49.
2399
3.4
385.
254
9.7
7.81
924.
635
4.5
608.
26.
5485
0.8
338.
363
9.4
5.96
811.
9
AS
h 41
5B46
0.5
457
11.0
711
05.3
433.
550
5.7
9.5
1040
.440
4.5
559.
78.
0797
0.7
373.
261
8.9
6.78
895.
835
6.8
650.
46.
1885
6.2
CO
MP.
kWEE
RW
ATER
FLO
W(G
PM)
CAP.
(Ton
s)C
OM
P.kW
EER
WAT
ERFL
OW
(GPM
)CA
P.(T
ons)
CO
MP.
kWEE
RW
ATER
FLO
W (G
PM)
CAP.
(Ton
s)C
OM
P.kW
EER
WAT
ERFL
OW
(GPM
)CA
P.(T
ons)
CO
MP.
kWW
ATER
FLO
W(G
PM)
EER
4.D
irect
inte
rpol
atio
n is
per
mis
sibl
e. D
o no
t ext
rapo
late
.5.
kW p
ower
inpu
t is
for c
ompr
esso
r onl
y.6.
EE
R f
or e
ntire
uni
t. R
efer
to e
lect
rical
dat
a fo
r fan
kW
.
LEAV
ING
CHIL
LED
WAT
ER T
EMP.
(LCW
T)
PER
FOR
MA
NC
E D
ATA
(Met
ric u
nits
)
UN
ITSI
ZE
350 C
AM
BIE
NT
TEM
PER
ATU
RE
400 C
AM
BIE
NT
TEM
PER
ATU
RE
460 C
AM
BIE
NT
TEM
PER
ATU
RE
520 C
AM
BIE
NT
TEM
PER
ATU
RE
550 C
AM
BIE
NT
TEM
PER
ATU
RE
CAP.
(kW
)
LEG
END
:kW
-C
ompr
esso
r pow
er in
put
LPS
-Li
ters
Per
Sec
ond
CO
P-
Coe
ffici
ent o
f Per
form
ance
NO
TES:
1.P
acka
ged
chill
ers
are
rate
d w
ith A
RI s
tand
ard
550/
590.
2.P
erfo
rman
ce d
ata
are
base
d on
60 C
wat
er ra
nge
in e
vapo
rato
r.3.
Rat
ings
are
bas
ed o
n 0.
0000
18 (m
2 -0 C
/W) f
oulin
g fa
ctor
for e
vapo
rato
r.
CO
MP.
kWC
OP
WAT
ERFL
OW
(LPS
)CA
P.(k
W)
CO
MP.
kWC
OP
WAT
ERFL
OW
(LPS
)CA
P.(k
W)
CO
MP.
kWC
OP
WAT
ERFL
OW
(LPS
)CA
P.(k
W)
CO
MP.
kWC
OP
WAT
ERFL
OW
(LPS
)CA
P.(k
W)
CO
MP.
kWW
ATER
FLO
W(L
PS)
CO
P
4.D
irect
inte
rpol
atio
n is
per
mis
sibl
e. D
o no
t ext
rapo
late
.5.
kW p
ower
inpu
t is
for c
ompr
esso
r onl
y.6.
CO
P fo
r ent
ire u
nit.
Ref
er to
ele
ctric
al d
ata
for f
an k
W.
AS
h 10
0B34
0.5
95.8
3.06
13.6
321.
910
52.
6812
.829
8.3
118.
22.
2311
.927
3.3
133.
61.
8410
.926
0.2
142.
11.
6510
.4
AS
h 13
0B42
2.3
121.
33.
0116
.839
7.5
134
2.6
15.9
366.
515
1.9
2.14
14.6
334.
117
2.6
1.74
13.3
317.
418
4.1
1.56
12.7
AS
h 14
5B47
2.3
138.
43
18.8
443.
915
1.5
2.6
17.7
407.
716
9.3
2.16
16.3
369.
218
9.3
1.77
14.7
349
200.
21.
5913
.9
AS
h 16
0B50
3.1
142.
93.
0320
.147
615
6.8
2.65
1944
1.8
176.
62.
2117
.640
5.5
199.
81.
8216
.238
6.5
212.
71.
6415
.4
AS
h 18
5B59
8.8
175.
53.
0223
.956
6.2
194.
42.
6122
.652
4.8
221.
12.
1520
.948
125
2.2
1.75
19.2
458.
226
9.4
1.57
18.3
AS
h 20
0B63
0.1
192.
92.
9225
.160
3.1
217.
62.
5124
568.
325
2.8
2.06
22.7
531.
129
4.4
1.67
21.2
511.
731
7.5
1.5
20.4
AS
h 21
5B69
8.8
197.
23.
0727
.965
8.6
216
2.67
26.3
608
242.
52.
2324
.255
4.7
273.
41.
8222
.152
729
0.5
1.64
21
AS
h 24
0B77
0.2
221
3.06
30.7
725.
324
3.3
2.65
28.9
668.
927
4.6
2.19
26.7
609.
731
11.
7924
.357
9.1
331
1.6
23.1
AS
h 26
0B83
8.8
245.
43.
0433
.478
9.2
271.
32.
6131
.572
7.1
307.
52.
1529
662.
234
9.3
1.74
26.4
628.
737
2.4
1.56
25.1
AS
h 30
0B99
1.4
292.
13.
0439
.593
632
0.6
2.64
37.3
865.
936
1.3
2.19
34.5
791.
740
8.7
1.79
31.6
752.
943
4.9
1.6
30
AS
h 32
0B10
62.5
312.
13.
0742
.410
03.1
343.
72.
6540
928
388.
62.
1937
848.
644
11.
7933
.880
7.3
469.
91.
632
.2
AS
h 36
0B11
9035
7.1
2.98
47.4
1122
.739
5.5
2.57
44.8
1037
.644
9.8
2.11
41.4
947.
851
2.9
1.71
37.8
901.
154
7.6
1.53
35.9
AS
h 37
0B11
87.1
356.
82.
9847
.311
21.5
395.
42.
5644
.710
38.3
449.
92.
1141
.495
0.4
513.
21.
7137
.990
4.7
548
1.53
36.1
AS
h 40
0B12
9441
7.6
2.82
51.6
1218
.345
8.4
2.43
48.6
1121
.451
3.8
2.02
44.7
1017
.457
6.1
1.65
40.6
962.
660
9.7
1.48
38.4
AS
h 41
5B13
89.4
429
2.95
55.4
1303
.246
9.7
2.55
5211
93.7
524.
52.
1147
.610
77.1
585.
61.
7243
1016
.161
8.6
1.54
40.5
AS
h 10
0B34
9.5
96.8
3.12
13.9
330.
410
62.
7213
.230
6.2
119.
12.
2812
.228
0.5
134.
51.
8711
.226
7.2
143
1.69
10.7
AS
h 13
0B43
4.3
122.
53.
0717
.340
8.9
135.
32.
6516
.337
7.3
153.
22.
1915
344.
217
3.9
1.78
13.7
327.
218
5.2
1.6
13
AS
h 14
5B48
5.8
139.
83.
0619
.445
6.7
153.
12.
6518
.241
9.7
170.
92.
2116
.738
0.3
190.
91.
8115
.235
9.6
201.
71.
6314
.3
AS
h 16
0B52
114
4.8
3.11
20.8
493
158.
72.
7119
.745
7.6
178.
52.
2718
.242
020
1.6
1.87
16.7
400.
321
4.4
1.69
16
AS
h 18
5B62
1.5
177.
63.
124
.858
7.6
196.
52.
6823
.454
4.8
223.
32.
2121
.749
9.7
254.
31.
819
.947
6.4
271.
41.
6219
AS
h 20
0B65
2.8
195
326
624.
921
9.8
2.57
24.9
589.
125
5.1
2.12
23.5
551
296.
71.
7222
531.
131
9.8
1.55
21.2
AS
h 21
5B71
819
9.4
3.12
28.6
676.
821
8.2
2.72
2762
524
4.7
2.27
24.9
570.
427
5.5
1.86
22.7
542
292.
41.
6821
.6
AS
h 24
0B79
1.8
223.
33.
1231
.674
5.7
245.
72.
729
.768
827
72.
2427
.462
7.5
313.
21.
8325
596.
333
3.2
1.64
23.8
AS
h 26
0B86
2.6
247.
93.
134
.481
1.8
273.
92.
6732
.474
8.2
310.
12.
229
.868
2.1
351.
91.
7827
.264
8.1
374.
81.
625
.8
AS
h 30
0B10
2029
5.4
3.09
40.7
963.
132
42.
6938
.489
1.1
364.
62.
2335
.581
541
1.8
1.83
32.5
775.
243
7.9
1.64
30.9
AS
h 32
0B10
93.7
315.
53.
1343
.610
32.7
347.
22.
7141
.295
5.7
392
2.24
38.1
874.
444
4.2
1.83
34.9
832.
147
31.
6433
.2
AS
h 36
0B12
25.9
360.
73.
0448
.911
56.8
399.
32.
6246
.110
69.6
453.
52.
1642
.797
7.9
516.
41.
7539
930.
455
11.
5737
.1
AS
h 37
0B12
31.7
361.
33.
0549
.111
63.6
400
2.63
46.4
1077
.645
4.5
2.17
4398
7.1
517.
51.
7639
.494
0.3
552.
21.
5837
.5
AS
h 40
0B13
42.7
423.
42.
8853
.512
64.3
464.
52.
550
.411
63.9
520.
12.
0746
.410
56.4
582.
31.
6942
.199
9.8
615.
91.
5239
.9
AS
h 41
5B14
24.1
433.
23
56.8
1335
.947
42.
5953
.312
23.8
528.
92.
1448
.811
04.6
590.
11.
7544
1042
.262
2.9
1.57
41.6
AS
h 10
0B35
6.5
97.5
3.16
14.2
337.
310
6.8
2.76
13.5
313.
112
02.
3112
.528
7.3
135.
31.
9111
.527
3.9
143.
81.
7210
.9
AS
h 13
0B44
5.2
123.
63.
1217
.841
9.6
136.
52.
716
.738
7.6
154.
42.
2315
.535
4.3
175.
11.
8214
.133
7.2
186.
51.
6413
.4
AS
h 14
5B49
7.3
141.
13.
119
.846
815
4.4
2.7
18.7
430.
817
2.3
2.25
17.2
391
192.
41.
8515
.637
0.1
203.
31.
6614
.8
AS
h 16
0B53
8.7
146.
73.
1821
.550
9.9
160.
72.
7820
.347
3.4
180.
52.
3318
.943
4.7
203.
41.
9217
.341
4.5
216.
11.
7316
.5
AS
h 18
5B64
3.2
179.
73.
1725
.660
8.3
198.
72.
7424
.356
4.4
225.
42.
2722
.551
8.3
256.
41.
8620
.749
4.5
273.
41.
6719
.7
AS
h 20
0B67
4.4
197
3.07
26.9
645.
722
1.9
2.64
25.7
609.
225
7.4
2.17
24.3
570.
429
91.
7722
.755
0.1
322.
21.
5921
.9
AS
h 21
5B73
6.9
201.
63.
1729
.469
5.2
220.
52.
7727
.764
2.6
247
2.32
25.6
587.
227
7.6
1.91
23.4
558.
429
4.4
1.72
22.3
AS
h 24
0B81
2.1
225.
63.
1732
.476
5.5
248.
12.
7530
.570
7.1
279.
42.
2828
.264
631
5.6
1.87
25.8
614.
433
5.5
1.68
24.5
AS
h 26
0B88
4.1
250.
23.
1535
.383
2.8
276.
32.
7133
.276
8.8
312.
72.
2430
.770
2.2
354.
41.
8228
667.
937
7.4
1.64
26.6
AS
h 30
0B10
43.4
298.
13.
1441
.698
6.1
327
2.73
39.3
913.
536
7.6
2.27
36.4
836.
641
4.7
1.86
33.4
796.
444
0.6
1.68
31.8
AS
h 32
0B11
18.3
318.
13.
1744
.610
56.8
350
2.75
42.1
979.
339
52.
2839
897.
444
7.1
1.86
35.8
854.
947
5.8
1.68
34.1
AS
h 36
0B12
51.9
363.
33.
0949
.911
82.5
402.
12.
6647
.210
95.1
456.
52.
243
.710
03.3
519.
41.
7940
955.
855
41.
638
.1
AS
h 37
0B12
74.4
365.
63.
1350
.812
04.3
404.
52.
748
1116
.245
92.
2344
.510
23.7
521.
91.
8240
.897
5.8
556.
41.
6338
.9
AS
h 40
0B13
88.7
428.
92.
9555
.413
08.1
470.
32.
5552
.212
05.1
526.
12.
1248
.110
94.7
588.
51.
7443
.710
36.5
622
1.56
41.3
AS
h 41
5B14
49.2
436.
33.
0357
.813
61.2
477.
42.
6254
.312
49.1
532.
62.
1749
.811
29.7
594.
11.
7845
1067
.162
7.1
1.59
42.5
4 0 C
6 0 C
5 0 C
15
7 0 C
10 0 C
8 0 C
16
LEAV
ING
CHIL
LED
WAT
ER T
EMP.
(LCW
T)
PER
FOR
MA
NC
E D
ATA
(Met
ric u
nits
)
UN
ITSI
ZE
350 C
AM
BIE
NT
TEM
PER
ATU
RE
400 C
AM
BIE
NT
TEM
PER
ATU
RE
460 C
AM
BIE
NT
TEM
PER
ATU
RE
520 C
AM
BIE
NT
TEM
PER
ATU
RE
550 C
AM
BIE
NT
TEM
PER
ATU
RE
CAP.
(kW
)
LEG
END
:kW
-C
ompr
esso
r pow
er in
put
LPS
-Li
ters
Per
Sec
ond
CO
P-
Coe
ffici
ent o
f Per
form
ance
NO
TES:
1.P
acka
ged
chill
ers
are
rate
d w
ith A
RI s
tand
ard
550/
590.
2.P
erfo
rman
ce d
ata
are
base
d on
60 C
wat
er ra
nge
in e
vapo
rato
r.3.
Rat
ings
are
bas
ed o
n 0.
0000
18 (m
2 -0 C
/W) f
oulin
g fa
ctor
for e
vapo
rato
r.
CO
MP.
kWC
OP
WAT
ERFL
OW
(LPS
)CA
P.(k
W)
CO
MP.
kWC
OP
WAT
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OW
(LPS
)CA
P.(k
W)
CO
MP.
kWC
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WAT
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OW
(LPS
)CA
P.(k
W)
CO
MP.
kWC
OP
WAT
ERFL
OW
(LPS
)CA
P.(k
W)
CO
MP.
kWW
ATER
FLO
W(L
PS)
CO
P
4.D
irect
inte
rpol
atio
n is
per
mis
sibl
e. D
o no
t ext
rapo
late
.5.
kW p
ower
inpu
t is
for c
ompr
esso
r onl
y.6.
CO
P fo
r ent
ire u
nit.
Ref
er to
ele
ctric
al d
ata
for f
an k
W.
AS
h 10
0B36
4.7
98.4
3.21
14.5
345.
810
7.8
2.81
13.8
321.
912
1.1
2.36
12.8
296.
313
6.4
1.95
11.8
283
144.
81.
7711
.3
AS
h 13
0B45
7.9
124.
93.
1818
.343
2.2
137.
92.
7517
.240
015
5.9
2.29
1636
6.8
176.
71.
8714
.634
9.7
188.
11.
6913
.9
AS
h 14
5B51
0.2
142.
43.
1620
.348
1.1
155.
92.
7519
.244
3.8
174
2.3
17.7
404
194.
31.
8916
.138
320
5.2
1.71
15.3
AS
h 16
0B55
6.6
148.
73.
2422
.252
716
2.7
2.84
2148
9.6
182.
42.
3819
.544
9.9
205.
31.
9717
.942
9.2
217.
81.
7817
.1
AS
h 18
5B66
4.7
181.
73.
2526
.562
920
0.9
2.81
25.1
584.
122
7.6
2.33
23.3
537.
125
8.6
1.91
21.4
512.
927
5.6
1.72
20.5
AS
h 20
0B69
5.6
198.
93.
1427
.766
6.3
224
2.7
26.6
629.
225
9.6
2.23
25.1
589.
730
1.4
1.82
23.5
569.
232
4.6
1.64
22.7
AS
h 21
5B76
0.2
204.
33.
2430
.371
8.1
223.
32.
8328
.666
4.9
249.
92.
3726
.560
8.7
280.
41.
9624
.357
9.5
297.
11.
7723
.1
AS
h 24
0B83
6.6
228.
33.
2333
.478
9.7
251
2.8
31.5
730.
928
2.5
2.33
29.1
669.
331
8.6
1.92
26.7
637.
533
8.4
1.73
25.4
AS
h 26
0B90
9.4
253
3.21
36.3
857.
927
9.3
2.77
34.2
793.
831
5.8
2.29
31.7
727
357.
71.
8729
692.
738
0.7
1.68
27.6
AS
h 30
0B10
69.5
301.
23.
1942
.610
12.2
330.
32.
7840
.493
9.5
371.
12.
3237
.586
2.3
418.
11.
9134
.482
1.9
443.
91.
7232
.8
AS
h 32
0B11
44.6
321
3.22
45.6
1083
.435
3.2
2.8
43.2
1006
.139
8.4
2.32
40.1
924.
445
0.5
1.91
36.9
881.
847
9.2
1.72
35.2
AS
h 36
0B12
78.2
366
3.13
5112
09.4
405.
12.
7148
.211
22.8
459.
82.
2444
.810
31.8
522.
91.
8341
.198
4.7
557.
51.
6439
.3
AS
h 37
0B13
16.7
370
3.2
52.5
1245
409.
12.
7649
.611
54.9
463.
62.
2846
.110
60.7
526.
51.
8742
.310
12.1
561
1.68
40.4
AS
h 40
0B14
33.6
434.
43.
0157
.213
51.4
476.
12.
6153
.912
46.1
532.
22.
1749
.711
33.3
594.
71.
7845
.210
73.8
628.
31.
642
.8
AS
h 41
5B14
7843
9.8
3.07
58.9
1391
.748
1.5
2.66
55.5
1281
.353
7.4
2.21
51.1
1163
.359
9.5
1.81
46.4
1101
.363
2.9
1.63
43.9
AS
h 10
0B37
6.7
99.7
3.28
1535
8.3
109.
32.
8814
.333
4.7
122.
62.
4313
.330
9.6
138
2.02
12.3
296.
314
6.4
1.83
11.8
AS
h 13
0B47
4.3
126.
73.
2518
.944
8.6
139.
82.
8217
.941
6.4
158
2.35
16.6
383
178.
81.
9415
.336
5.7
190.
21.
7514
.6
AS
h 14
5B52
6.9
144.
23.
2321
497.
915
7.9
2.81
19.9
460.
617
6.2
2.36
18.4
420.
719
6.7
1.95
16.8
399.
620
7.7
1.76
15.9
AS
h 16
0B57
4.8
150.
63.
3122
.954
4.6
164.
72.
921
.750
6.3
184.
52.
4420
.246
5.7
207.
22.
0218
.644
4.4
219.
61.
8317
.7
AS
h 18
5B68
6.2
183.
83.
3227
.464
9.7
203.
12.
8725
.960
422
9.9
2.39
24.1
556.
326
0.8
1.96
22.2
531.
727
7.8
1.77
21.2
AS
h 20
0B71
6.6
200.
93.
228
.668
6.8
226.
22.
7627
.464
9.2
261.
92.
2825
.960
9.2
303.
81.
8624
.358
8.3
327
1.68
23.5
AS
h 21
5B79
0.4
207.
73.
3231
.574
7.8
226.
92.
929
.869
3.9
253.
52.
4427
.763
6.7
283.
92.
0225
.460
6.9
300.
51.
8324
.2
AS
h 24
0B86
8.2
231.
83.
3134
.682
0.9
254.
72.
8832
.776
1.7
286.
42.
430
.469
9.5
322.
61.
9827
.966
7.2
342.
31.
7926
.6
AS
h 26
0B94
225
6.6
3.28
37.6
890.
428
3.2
2.84
35.5
826.
132
02.
3632
.975
936
2.1
1.93
30.3
724.
438
51.
7428
.9
AS
h 30
0B11
02.9
305.
13.
2544
1045
.733
4.5
2.83
41.7
972.
937
5.5
2.37
38.8
895.
442
2.5
1.96
35.7
854.
844
8.2
1.77
34.1
AS
h 32
0B11
78.5
324.
73.
2847
1117
.635
7.2
2.85
44.6
1040
.540
2.7
2.38
41.5
958.
945
4.9
1.96
38.2
916.
348
3.5
1.77
36.5
AS
h 36
0B13
11.9
369.
53.
1952
.312
43.8
409
2.76
49.6
1158
.246
42.
2946
.210
68.2
527.
41.
8842
.610
21.6
562.
21.
6940
.7
AS
h 37
0B13
5937
4.4
3.26
54.2
1285
.841
3.7
2.82
51.3
1194
.246
8.4
2.34
47.6
1098
.553
1.3
1.92
43.8
1049
.156
5.7
1.73
41.8
AS
h 40
0B14
78.1
439.
83.
0758
.913
94.4
481.
92.
6655
.612
87.3
538.
32.
2251
.311
72.4
601
1.82
46.7
1111
.863
4.6
1.64
44.3
AS
h 41
5B15
2244
5.1
3.12
60.7
1438
.248
7.7
2.71
57.3
1330
.754
4.7
2.27
53.1
1215
607.
91.
8748
.411
53.8
641.
81.
6946
AS
h 10
0B40
4.6
102.
73.
4316
.138
5.3
112.
43.
0215
.436
0.7
125.
72.
5614
.433
4.3
141
2.14
13.3
320.
314
9.3
1.95
12.8
AS
h 13
0B50
7.9
130.
33.
420
.348
114
3.6
2.96
19.2
447.
416
1.9
2.47
17.8
412.
318
2.7
2.04
16.4
394.
119
4.1
1.85
15.7
AS
h 14
5B56
3.7
148.
23.
3722
.553
3.4
162.
12.
9421
.349
4.5
180.
62.
4819
.745
2.6
201.
22.
0518
430.
521
2.3
1.86
17.2
AS
h 16
0B61
0.6
154.
53.
4424
.357
9.3
168.
73.
0223
.153
9.5
188.
42.
5521
.549
7.2
211
2.13
19.8
475
223.
31.
9318
.9
AS
h 18
5B72
7.4
187.
93.
4529
689.
820
7.4
327
.564
323
4.5
2.5
25.6
594
265.
52.
0623
.756
8.6
282.
51.
8622
.7
AS
h 20
0B75
6.8
204.
73.
3230
.272
6.4
230.
32.
8729
687.
826
6.4
2.38
27.4
646.
730
8.5
1.95
25.8
625.
233
1.8
1.76
24.9
AS
h 21
5B84
6.7
214.
23.
4633
.880
1.8
233.
43.
0432
744.
925
9.8
2.56
29.7
684.
428
9.9
2.14
27.3
652.
830
6.2
1.94
26
AS
h 24
0B92
9.7
238.
83.
4537
.188
0.2
261.
93.
0135
.181
829
3.6
2.52
32.6
752.
432
9.7
2.09
3071
8.2
349.
21.
8928
.6
AS
h 26
0B10
08.4
264
3.42
40.2
954.
529
1.1
2.97
38.1
887.
332
8.1
2.47
35.4
816.
937
0.3
2.04
32.6
780.
339
3.2
1.84
31.1
AS
h 30
0B11
78.7
314.
13.
3847
1118
.734
3.7
2.96
44.6
1042
.338
4.5
2.49
41.6
960.
743
12.
0638
.391
7.9
456.
31.
8736
.6
AS
h 32
0B12
59.5
333.
73.
4250
.211
95.8
366.
62.
9847
.711
15.2
412.
12.
544
.510
29.7
464
2.07
41.1
985
492.
31.
8739
.3
AS
h 36
0B14
01.5
378.
83.
3355
.913
30.5
418.
92.
8953
.112
41.5
474.
32.
449
.511
48.2
537.
81.
9845
.810
99.8
572.
51.
7943
.9
AS
h 37
0B14
40.3
383
3.39
57.4
1365
422.
92.
9454
.412
7147
82.
4450
.711
72.7
541.
12.
0146
.811
21.7
575.
51.
8244
.7
AS
h 40
0B15
62.7
450.
13.
1862
.314
77.1
492.
92.
7658
.913
67.1
550.
12.
3154
.512
48.8
613.
41.
9149
.811
86.3
647.
31.
7247
.3
AS
h 41
5B16
34.2
458.
93.
2665
.215
47.7
502.
42.
8461
.714
36.3
560.
42.
3857
.313
15.9
624.
41.
9752
.512
52.2
658.
51.
7949
.9
421
587
216
5.6
885
326
52
--
--
--
86.
115
.28
48.8
423
040
01.
74
253
354
210
0.2
534
316
02
--
--
--
83.
515
.28
284
230
400
1.74
214
297
282
.842
33
132
2-
--
--
-8
3.5
16.8
028
423
040
01.
7452
973
72
208.
010
403
333
2-
--
--
-10
6.1
19.1
061
523
060
02.
6131
844
42
125.
963
13
201
2-
--
--
-10
3.5
19.1
035
523
060
02.
6126
937
32
104.
052
03
166
2-
--
--
-10
3.5
21.0
035
523
060
02.
6159
983
82
239.
012
243
382
2-
--
--
-10
6.1
19.1
061
523
060
02.
61
361
506
214
4.9
742
323
22
--
--
--
103.
519
.10
355
230
600
2.61
304
424
211
9.7
612
319
22
--
--
--
103.
521
.00
355
230
600
2.61
611
777
316
5.6
885
326
53
--
--
--
126.
122
.92
73.2
623
060
02.
6136
846
83
100.
253
43
160
3-
--
--
-12
3.5
22.9
242
623
060
02.
6131
139
43
82.8
423
313
23
--
--
--
123.
525
.20
426
230
600
2.61
749
957
320
8.0
1040
333
33
--
--
--
126.
122
.92
73.2
623
090
03.
9145
157
73
125.
963
13
201
3-
--
--
-12
3.5
22.9
242
623
090
03.
91
380
484
310
4.0
520
316
63
--
--
--
123.
525
.20
426
230
900
3.91
810
1045
223
5.0
1040
337
62
120
810
403
333
112
6.1
22.9
273
.26
230
900
3.91
488
630
214
2.1
631
322
72
112
5.9
631
320
11
123.
522
.92
426
230
900
3.91
410
528
211
7.4
520
318
82
110
452
03
166
112
3.5
25.2
042
623
090
03.
9180
196
74
165.
688
53
265
4-
--
--
-16
6.1
30.5
697
.68
230
800
3.48
482
582
410
0.2
534
316
04
--
--
--
163.
530
.56
568
230
800
3.48
408
491
482
.842
33
132
4-
--
--
-16
3.5
33.6
056
823
080
03.
48
897
1105
220
8.0
1040
333
32
216
5.6
885
326
52
166.
130
.56
97.6
823
010
004.
35
540
666
212
5.9
631
320
12
210
0.2
534
316
02
163.
530
.56
568
230
1000
4.35
456
560
210
4.0
520
316
62
282
.842
33
132
216
3.5
33.6
056
823
010
004.
35
CRAN
KCAS
E HE
ATER
Tota
lW
atts
Volts
Tota
lAm
psCB (Qty
.)FC
ATo
tal
kWFL
A(e
ach)
Qty
.CB Po
les
LRA
(eac
h)RL
A(e
ach)
Qty
.CB Po
les
LRA
(eac
h)RL
A(e
ach)
208/
230-
3-60
380-
3-60
460-
3-60
208/
230-
3-60
380-
3-60
460-
3-60
208/
230-
3-60
380-
3-60
460-
3-60
208/
230-
3-60
380-
3-60
460-
3-60
208/
230-
3-60
380-
3-60
460-
3-60
208/
230-
3-60
380-
3-60
460-
3-60
208/
230-
3-60
380-
3-60
460-
3-60
208/
230-
3-60
380-
3-60
460-
3-60
ASh
100
B
ASh
130
B
ASh
145
B
ASh
160
B
ASh
185
B
ASh
200
B
ASh
215
B
ASh
240
B
UN
ITSI
ZE
SUPP
LY V
OLT
AG
EC
OM
PRES
SOR
TYP
E-1
CO
MPR
ESSO
R T
YPE-
2C
ON
DEN
SER
FA
N M
OTO
RS
ELEC
TRIC
AL
DAT
A
MO
CP
MC
AM
ax.
Min
.N
omin
al(V
-Ph-
Hz)
187
342
414
187
342
414
187
342
414
187
342
414
187
342
414
187
342
414
187
342
414
187
342
414
253
418
506
253
418
506
253
418
506
253
418
506
253
418
506
253
418
506
253
418
506
253
418
506
Qty
.Q
ty.
MTA
CBQ
ty.
MTA
CB
LEG
END
:M
CA
-M
inim
um C
ircui
t Am
paci
ty p
er N
EC
430
-24
MO
CP
-M
axim
um O
ver C
urre
nt P
rote
ctio
nRL
A-
Rat
ed L
oad
Am
psLR
A-
Lock
ed R
otor
Am
psCB
-C
ircui
t Bre
aker
MTA
-M
ust T
rip A
mps
FLA
-Fu
ll Lo
ad A
mps
FCA
-Fa
n C
ircui
t Am
pskW
-K
ilo W
att
PWS
-P
art W
indi
ng S
tart
NO
TES:
1.C
usto
mer
to s
peci
fy th
e ex
act n
omin
al p
ower
sup
ply
avai
labl
e at
site
so
that
ele
ctric
al c
ompo
nent
s ar
e se
lect
ed a
ccur
atel
y, fa
iling
to d
o so
will
affe
ct u
nit p
erfo
rman
ce &
term
s of
war
rant
y.2.
Mai
n po
wer
mus
t be
supp
lied
from
a s
ingl
e fie
ld s
uppl
ied
and
mou
nted
fuse
d di
scon
nect
s, u
sing
dua
l ele
men
t tim
e de
lay
fuse
or c
ircui
t bre
aker
.3.
The
max
imum
inco
min
g w
ire s
ize
is 5
00 M
CM
. O
n un
its h
avin
g M
CA
gre
ater
than
500
MC
M w
ire, t
he fa
ctor
y su
pplie
d po
wer
term
inal
blo
ck w
ill a
ccep
t tw
o or
mor
e pa
ralle
l fie
ld w
ires
per p
ole
phas
e.4.
The
com
pres
sor c
rank
case
hea
ters
mus
t be
ener
gize
d fo
r 12
hour
s be
fore
the
unit
is in
itial
ly s
tarte
d or
afte
r a p
rolo
nged
pow
er d
isco
nnec
tion.
5.U
nder
com
pres
sor t
ype
1 is
the
larg
e co
mpr
esso
r or c
ompr
esso
r with
eco
nom
izer
, and
the
type
2 is
the
smal
l com
pres
sor o
r com
pres
sor
with
out E
cono
miz
er.
6.A
ll fie
ld w
iring
mus
t be
in a
ccor
danc
e w
ith N
EC
and
loca
l sta
ndar
ds.
7.M
inim
um a
nd m
axim
um u
nit s
uppl
y vo
ltage
s ar
e sh
own
in th
e ta
bula
ted
data
abo
ve.
8.N
eutr
al li
ne re
quire
d on
380
V-3
Ph-
60H
z po
wer
sup
ply
only
.9.
The
±10%
vol
tage
var
iatio
n fro
m th
e no
min
al is
allo
wed
for a
sho
rt tim
e on
ly, n
ot p
erm
anen
t.10
.RLA
val
ues
are
base
d on
nom
inal
con
ditio
ns.
17
COM
P.ST
ART
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
CRAN
KCAS
E HE
ATER
982
1190
420
8.0
1040
333
34
--
--
--
166.
130
.56
97.6
823
012
005.
2259
171
74
125.
963
13
201
4-
--
--
-16
3.5
30.5
656
823
012
005.
2249
860
24
104.
052
03
166
4-
--
--
-16
3.5
33.6
056
823
012
005.
2211
4513
106
165.
688
53
265
6-
--
--
-18
6.1
34.3
810
9.8
923
012
005.
2268
978
96
100.
253
43
160
6-
--
--
-18
3.5
34.3
863
923
012
005.
22
581
663
682
.842
33
132
6-
--
--
-18
3.5
37.8
063
923
012
005.
2212
4014
482
208.
010
403
333
24
166
885
326
54
186.
134
.38
109.
89
230
1200
5.22
747
873
212
5.9
631
320
12
410
053
43
160
418
3.5
34.3
863
923
012
005.
2262
873
22
104.
052
03
166
24
8342
33
132
418
3.5
37.8
063
923
012
005.
2214
3416
426
208.
010
403
333
6-
--
--
-22
6.1
42.0
213
4.2
1123
018
007.
8386
499
06
125.
963
13
201
6-
--
--
-22
3.5
42.0
277
1123
018
007.
83
727
831
610
4.0
520
316
66
--
--
--
223.
546
.20
7711
230
1800
7.83
1434
1642
620
8.0
1040
333
36
--
--
--
226.
142
.02
134.
211
230
1800
7.83
864
990
612
5.9
631
320
16
--
--
--
223.
542
.02
7711
230
1800
7.83
727
831
610
4.0
520
316
66
--
--
--
223.
546
.20
7711
230
1800
7.83
1628
1867
623
9.0
1224
338
26
--
--
--
226.
142
.02
134.
211
230
1800
7.83
983
1128
614
4.9
742
323
26
--
--
--
223.
542
.02
7711
230
1800
7.83
825
945
611
9.7
612
319
26
--
--
--
223.
546
.20
7711
230
1800
7.83
1628
1867
623
9.0
1224
338
26
--
--
--
226.
142
.02
134.
211
230
1800
7.83
983
1128
614
4.9
742
323
26
--
--
--
223.
542
.02
7711
230
1800
7.83
825
945
611
9.7
612
319
26
--
--
--
223.
546
.20
7711
230
1800
7.83
Tota
lW
atts
Volts
Tota
lAm
psCB (Qty
.)FC
ATo
tal
kWFL
A(e
ach)
Qty
.CB Po
les
LRA
(eac
h)RL
A(e
ach)
Qty
.CB Po
les
LRA
(eac
h)RL
A(e
ach)
208/
230-
3-60
380-
3-60
460-
3-60
208/
230-
3-60
380-
3-60
460-
3-60
208/
230-
3-60
380-
3-60
460-
3-60
208/
230-
3-60
380-
3-60
460-
3-60
208/
230-
3-60
380-
3-60
460-
3-60
208/
230-
3-60
380-
3-60
460-
3-60
208/
230-
3-60
380-
3-60
460-
3-60
ASh
260
B
ASh
300
B
ASh
320
B
AA
Sh 3
60B
ASh
370
B
ASh
400
B
ASh
415
B
UN
ITSI
ZE
SUPP
LY V
OLT
AG
EC
OM
PRES
SOR
TYP
E-1
CO
MPR
ESSO
R T
YPE-
2C
ON
DEN
SER
FA
N M
OTO
RS
ELEC
TRIC
AL
DAT
A
MO
CP
MC
AM
ax.
Min
.N
omin
al(V
-Ph-
Hz)
187
342
414
187
342
414
187
342
414
187
342
414
187
342
414
187
342
414
187
342
414
253
418
506
253
418
506
253
418
506
253
418
506
253
418
506
253
418
506
253
418
506
Qty
.Q
ty.
MTA
CBQ
ty.
MTA
CB
LEG
END
:M
CA
-M
inim
um C
ircui
t Am
paci
ty p
er N
EC
430
-24
MO
CP
-M
axim
um O
ver C
urre
nt P
rote
ctio
n
RLA
-R
ated
Loa
d A
mps
LRA
-Lo
cked
Rot
or A
mps
CB-
Circ
uit B
reak
er
MTA
-M
ust T
rip A
mps
FLA
-Fu
ll Lo
ad A
mps
FCA
-Fa
n C
ircui
t Am
ps
kW-
Kilo
Wat
t
PWS
-P
art W
indi
ng S
tart
NO
TES:
1.C
usto
mer
to s
peci
fy th
e ex
act n
omin
al p
ower
sup
ply
avai
labl
e at
site
so
that
ele
ctric
al c
ompo
nent
s ar
e se
lect
ed a
ccur
atel
y, fa
iling
to d
o so
will
affe
ct u
nit p
erfo
rman
ce &
term
s of
war
rant
y.2.
Mai
n po
wer
mus
t be
supp
lied
from
a s
ingl
e fie
ld s
uppl
ied
and
mou
nted
fuse
d di
scon
nect
s, u
sing
dua
l ele
men
t tim
e de
lay
fuse
or c
ircui
t bre
aker
.3.
The
max
imum
inco
min
g w
ire s
ize
is 5
00 M
CM
. O
n un
its h
avin
g M
CA
gre
ater
than
500
MC
M w
ire, t
he fa
ctor
y su
pplie
d po
wer
term
inal
blo
ck w
ill a
ccep
t tw
o or
mor
e pa
ralle
l fie
ld w
ires
per p
ole
phas
e.4.
The
com
pres
sor c
rank
case
hea
ters
mus
t be
ener
gize
d fo
r 12
hour
s be
fore
the
unit
is in
itial
ly s
tarte
d or
afte
r a p
rolo
nged
pow
er d
isco
nnec
tion.
5.U
nder
com
pres
sor t
ype
1 is
the
larg
e co
mpr
esso
r or c
ompr
esso
r with
eco
nom
izer
, and
the
type
2 is
the
smal
l com
pres
sor o
r com
pres
sor
with
out E
cono
miz
er.
6.A
ll fie
ld w
iring
mus
t be
in a
ccor
danc
e w
ith N
EC
and
loca
l sta
ndar
ds.
7.M
inim
um a
nd m
axim
um u
nit s
uppl
y vo
ltage
s ar
e sh
own
in th
e ta
bula
ted
data
abo
ve.
8.N
eutr
al li
ne re
quire
d on
380
V-3
Ph-
60H
z po
wer
sup
ply
only
.9.
The
±10%
vol
tage
var
iatio
n fro
m th
e no
min
al is
allo
wed
for a
sho
rt tim
e on
ly, n
ot p
erm
anen
t.10
.RLA
val
ues
are
base
d on
nom
inal
con
ditio
ns.
18
COM
P.ST
ART
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
PWS
WATER SIDE PRESSURE DROP
CURVE No. Maximum GPM MODEL No.ASh100BASh130BASh145BASh160BASh185BASh200BASh215BASh240B
12233322
287364403436519534606666
Minimum GPM181221243269319355367403
CONVERSION FACTOR: GPM = 0.063 Liters per second. Feet of water = 2.989 Kilo Pascal (kpa).
NOTE: 1. If an application requires certain water flow rate outside these limits, please check with your nearest dealer/sales office.2. The total flow rate should be divided by 2 for models ASh215B thru ASh415B in order to find out the total pressure drop.
19
1 2 3
4
100
FLOW RATE - GPM
PRES
SUR
E D
RO
P (F
T. O
F W
ATE
R)
60
23
1
50
910
204
86
57
8070 90
7010
090
8030
5040
6020
0
300200 500400 600 700 800 1500900 1000 1200
CURVE No. Maximum GPM MODEL No.ASh260BASh300BASh320BASh360BASh370BASh400BASh415B
2222334
722840897998
102911171165
Minimum GPM438523561627630671706
SUGGESTED INSTALLATIONLEAVING/RETURN WATER TEMPERATURE SENSOR & WATER FLOW SWITCH
20
NOTE: 1. For chiller with 2 coolers, leaving water temperature sensor and return water temperature sensor should be installed in the water pipingmain header of every chiller.
2. Water flow switch should be installed vertically on the horizontal pipe line closed to the leaving water port of every cooler.
CONTROL PANEL
DIMENSIONSASh100B
NOTE: ALL DIMENSIONS ARE IN MILLIMETERS, UNLESS OTHERWISE SPECIFIED.
ASh130B & ASh145B
21
DIM
ENSI
ON
S
NO
TE: A
LL D
IME
NS
ION
S A
RE
IN M
ILLI
ME
TER
S, U
NLE
SS
OTH
ER
WIS
E S
PE
CIF
IED
.
ASh
160B
, ASh
185B
& A
Sh20
0B
MO
DEL
A
AS
h160
B20
75
AS
h185
B -
AS
h200
B24
65
DIM
ENSI
ON
S
22
DIM
ENSI
ON
S
NO
TE: A
LL D
IME
NS
ION
S A
RE
IN M
ILLI
ME
TER
S, U
NLE
SS
OTH
ER
WIS
E S
PE
CIF
IED
.
ASh
215B
, ASh
240B
& A
Sh26
0B
23
DIM
ENSI
ON
SA
Sh30
0B &
ASh
320B
NO
TE: A
LL D
IME
NS
ION
S A
RE
IN M
ILLI
ME
TER
S, U
NLE
SS
OTH
ER
WIS
E S
PE
CIF
IED
.
24
* EX
TRA
HE
IGH
T FO
R 2
30V
CO
NTR
OL
BO
X.
MO
DEL
A
AS
h300
B21
85
AS
h320
B24
65
DIM
ENSI
ON
S
DIM
ENSI
ON
S A
Sh36
0B, A
Sh37
0B, A
Sh40
0B &
ASh
415B
NO
TE: A
LL D
IME
NS
ION
S A
RE
IN M
ILLI
ME
TER
S, U
NLE
SS
OTH
ER
WIS
E S
PE
CIF
IED
.
MO
DEL
AB
C
AS
h360
B -
AS
h400
B22
0034
2048
3
AS
h415
B21
3034
7451
0
DIM
ENSI
ON
S
25
* EX
TRA
HE
IGH
T FO
R 2
30V
CO
NTR
OL
BO
X.
L2K
FMC6
L3K
L1K
COMP1 OILHTR
COMP2 OILHTR
EX7
EX8
ALCO
COMP1 CONTACTOR
EEVB JUMPER & DIP SWITCH
HOT GAS BYPASS SOLENOID
LIQUID LINE SOLENOID1
LIQUID LINE SOLENOID2
POWER DECREASE CP1
POWER DECREASE CP2
ALARM - NO CONTACT
COMP2 CONTACTOR
LIQUID INJECTION 1
ALARM - NC CONTACT
POWER INCREASE CP2
POWER INCREASE CP1
LIQUID INJECTION 2
CC212BR4(DIG OUT)
23A
23B
27A
25A
SERIAL CABLE
TOUT/LWT TEMP. SENSOR
SUCTION TEMP SENSOR COMP2
TIN/RWT TEMP. SENSOR
S1TL1TD1
(DIP) OFF
CLOSED
1ON
OPEN2
OFF3 4
OFF
JUMPER & DIP SWITCH SELECTION ON MAIN BOARD
JU2TU1
JU1CLOSEDCLOSED
CLOSED
TOUT=10°C TIN=15°CCOOLING 75%
SET
*
*
ESC
MENU
T3S
T4S
USER INTERFACE BOARD
*On/Off
SUCTION TEMP SENSOR COMP1
T2S
T1S
REMOTE MONITORINGINTERFACE(SEE OPTION BOX)
7A
TRANSDUCER+(A6-DP1) +
28B
29B
31B
30B
21 3 4
X52
X53
GND
O2
(A10-OP2)
-
+
(A4-TIN)
ON
TU1
TIN
TL1
S1DIP
TD1
(A3-ST2)
SH
22B
26A
ST2
S2
JU2
D2
(A9-DP2)
(A8-SP2)
JU1
+
-
SH
+
O1
SH
(A7-OP1)
-
+
- SPT2 - COMP2
TRANSDUCERSUCTION PRESSURE
DPT2 - COMP2
TRANSDUCERDISCHARGE PRESSURE
+
-
+
-
14B
18A
20A
19A
18B
19B
15B
15A
28A
29A
30A
31A
20B
R14(DIG OUT)
R16(DIG OUT)
R15(DIG OUT)
R18(DIG OUT)
R17(DIG OUT)
(A1-ST1)
(A2-TOUT)
SH
22A
24ATOUT
ST1
COM2
18C
17C
D1
SH
O1(A5-SP1)
-
+
-
14O
15O
18O
17O
16O
R5(DIG OUT)
R7(DIG OUT)
R8(DIG OUT)
R6(DIG OUT)
R11(DIG OUT)
R10(DIG OUT)
R12(DIG OUT)
R9(DIG OUT)
R13(DIG OUT)
C
C
5C
4C
6C
7C
8C
8NC
9O
10O
12O
11O
13O
5O
4O
6O
7O
8NO
FMC6 CTR-FAN 8
FMC8FMC7
TRANSDUCER
DPT1 - COMP1
SPT1 - COMP1SUCTION PRESSURE
DISCHARGE PRESSURE
+
-
-
SL.I2
UL4-1
UL4-2
CTR-FAN 2CTR-FAN 6
LLS2
FMC1
FMC4
FMC2FMC3
FMC5
16
SL.I1
UL3-2
6A
CTR-FAN 3 CTR-FAN 7CTR-FAN 1CTR-FAN 5
CTR-FAN 4
L1
CB17
FMC1
L1TO HVTB
JP3A
JP2A
(SEE UVM CONNECTION)
S1( CONTROL POWER)
10B
10A
8B
8A
JP3
FLS
HPS2
JP2
SSPS2
HPS1
1A
SSPS1
(See Circuit Breaker Option)
CWP*
OLR4-1
1
OLR2-1
10
1
11B
2H
11
2G
9B
(See Circuit Breaker Option)
OLR3-1OLR1-1 11A
UVR1
1COMP
T1C
1BATB
ETB/LUG
OLR1NTBT3
A
T1A
T2A
CC1
L2
L3
F1 5A
T2B
OLR3
T2C
T3C
OLR2
T1B
CC3 CC2
T3D
T1D
T2D
T3B
2COMP
OLR4
CC4
D1CCA4-1
12A
14A
A7/D7(CB-2)
A9/D9(HPS-2)
A11/D11(FLW)
A10/D10(FCB-2)
R1(DIG OUT)AC/DC(DIGITAL COM)
A13/D13 (EMERGENCY)
A12/D12 (EXT. ENABLE)
R3(DIG OUT)
R2(DIG OUT)
1C
2C
3C
A8/D8(OL-2)
PE
1O
2O
3O
A02-
+
2B
5B
5
A2/D2(CB-1)
A1/D1(SSPS-1)
A4/D4(HPS-1)
A5/D5(FCB-1)
A6/D6(SSPS-2)
SERIAL CABLE
9AA3/D3(OL-1)
230VAC
4 24VAC
AO1
EEV-
+5A
2A
MB
TRANS
-
LLS1
UL3-1
CC1
A2
B2
4
-
PE
+V2
2
+1
+-
-
3
BLK
WHT
GRN
RED
X2
X2
X2
X2
EEV CARD
(DIP)EEV2
TL1
JU1
S1
A1
B1
6 7
V1
12/24VAC
-
DIP+
+
+-
S1
X9
TRANS2EEVB
X1 RED
BLK
WHT
GRN
X1
X1
X1
1K
TO ATB
1230VAC
2
1EEV TD1
TU1
FM
36A
35A
36G
35G
36C
37C
37G
35C
TO NTB3
FM
CONTROL VOLTAGE230V-1PH
N
CCA1-1
CCA2-1
CCA3-1
7FM
FMC2
L1I
L2I
L3I
FMC3
CB18
37D
36D
35D
37E
36E
35E
37A
3A
1J T1
T1
3B
1HTR
2HTR
D1SSPS1
SSPS2
1FM5
COMP2 SSPS
COMP1 SSPST2
T2
ATB2
4FM
L1J
L2J
FMC4
L3J
FMC5
CB19
HVTB
OPEN
ON
ON
OPEN1
OFF
OFF3
ONOFF
2ON4
OFF
CLOSED
CLOSED
6FM
36F
35F
36B
35B
37B
37H
36H
35H
8FM FM
2
FMC7
CB20
L1L
FMC8
L3L
L2L
37F
REFER TO UNITNAMEPLATE FORPOWER SUPPLY
N (SEE NOTE -7)
TYPICAL SCHEMATIC WIRING DIAGRAM(PART WINDING START)
NOTE: 1. Refer to next page for legend, notes & wiring diagram for optional items. 2. Refer to unit control box (inside panel) for exact wiring diagram.
26
LEGEND
CBA THERMAL MAGNETIC CIRCUIT BREAKER AUXILIARYCOMP COMPRESSORCC COMPRESSOR CONTACTORCCA COMPRESSOR CONTACTOR AUXILIARYCWP CHILLED WATER PUMPETB EARTH TERMINAL BLOCKFLS FLOW SWITCHFM FAN MOTORFMC FAN MOTOR CONTACTORFT THERMAL MAGNETIC CB FAULT TRIP CONTACTF FUSEHPS HIGH PRESSURE SWITCHHGBS HOT GAS BYPASS SOLENOIDHVTB HIGH VOLTAGE TERMINAL BLOCKJP JUMPERLPS LOW PRESSURE SWITCHMB MASTER BOARDNTB NEUTRAL TERMINAL BLOCKOLR OVER LOAD RELAYPT PRESSURE TRANSDUCERP POTENTIAL BANDSLE ECONOMIZER SOLENOIDSB SLAVE BOARDS1 CONTROL SWITCHSSPS SOLID STATE PROTECTION SYSTEMTMCB THERMAL MAGNETIC CIRCUIT BREAKERTRANS TRANSFORMERTDS TIME DELAY SWITCHTS TEMPERATURE SENSORUL UNLOADERUVM UNDER VOLTAGE MONITORUVR UNDER VOLTAGE RELAY
TERMINAL BLOCK - - - - - FIELD SUPPLY
LEGEND ON MAIN BOARDD1 DIGITAL INPUT 1C/1C COMMON1O DIGITAL OUT 1DC DIGITAL COMMONT1 THERMISTOR 1SH SHIELDX52/X53 SERIAL COMMUNICATION PORTPE POTENTIAL EARTHJU/TU/TD/TL BOARD JUMPERS
NOTES1. POWER SUPPLY, REFER TO UNIT NAMEPLATE.
ALL FIELD WIRING TO COMPLY WITH LOCAL CODES.
2. FUSES TO DUAL ELEMENT TYPE.
3. USE COPPER CONDUCTORS ONLY.
4. FUSED DISCONNECT SWITCH OR CIRCUIT BREAKERTO BE PROVIDED BY END USER WITH RATING ASRECOMMENDED BY MANUFACTURER.
5. POWER MUST BE SUPPLIED TO CRANKCASEHEATER FOR MINIMUM OF 12 HOURS PRIOR TOSYSTEM START UP.IF POWER IS OFF 6 HOURS OR MORE, CRANKCASEHEATER MUST BE ON FOR 12 HOURS BEFOREOPERATING THE SYSTEM.
FAILURE TO FOLLOW THESE INSTRUCTIONS MAYRESULT IN COMPRESSOR DAMAGE.
6. MARK IN THE BOX FOUND AT THE UPPER RIGHT OFTHE RESPECTIVE OPTIONAL ITEM, IF THE OPTIONALITEM IS INCLUDED IN THE UNIT.
7. NEUTRAL LINE REQUIRED ON 380V-3Ph-60HzPOWER SUPPLY ONLY.
TYPICAL SCHEMATIC WIRING DIAGRAM(PART WINDING START)
27
1
1
CB1A-1
CB2A-1
LPS CONNECTION WITH CB (OPTIONAL)
LPS CONNECTION WITH OUT CB (OPTIONAL)
1
1
LPS1
LPS2
63A
63B
REMOVE JP2
REMOVE JP3
CONTROL PANEL
FAN2
FAN1
CONTROL PANEL
COMP1
MB
R7
GROUND FAULT PROTECTION OPTION.(GFP)
UVM CONNECTION
UNIT CONTROLS.PHASE MATCHED WITHON UVM TO BETERMINAL A,B,& C
UNIT EMERGENCY OPTION
UNIT EXTERNAL ENABLE/DISABLE OPTION
HOT GAS BYPASS OPTION
MB
1
1
wire number, 70A/71A for Comp 1 and 70B/71B for
COOLER HEATER TAPE OPTION
IF THE HGBS IS ENABLE COOLER HEATER TAPE IS NOT POSSIBLE
Current Transformer
23A
23B
MAIN BOARD
63A
63B
CB4A-1
REMOVE JP2
CB3A-122A
22B
LPS1
LPS2
D7(MB)
D2(MB)
A2/D2
A7/D7
COMP FAN 2
FAN4 FAN6
COMP FAN 1FAN LAYOUT
FAN3 FAN5
FAN8
FAN7
1 7C
1ATB
ATB1
Comp 2
Comp 2.
Comp 1
COMP LAYOUT
COMP2
NOTE:
EARTH FAULT RELAY
VFC FROM CUSTOMER PANEL
157OHGBS
VFC
2HEATER7O7C R71
REMOVE JP3
13A
3A
13B
3B
ECONOMIZER CONNECTION (OPTIONAL)
EQUALIZER CONNECTION (OPTIONAL)
GND
REMOTE MONITORING CONNECTION (OPTIONAL)
TO MB (50)
TO CCA2-1
TO CCA1-1
TO MB (20)
GATEWAYTO
COMPRESSOR PART WIND WITH CIRCUIT BREAKER
L1C
T1C
COMP
1
CC3
CBA3-1
COMPRESSOR CONTACTOR CONNECTION FOR PART WIND START
FOR PART WIND START TIME DELAY SWITCH (TDS) OPTION
IF THE COLLER HEATER TAPE IS ENABLE HGBS IS NOT POSSIBLE
1
1
CC1A-2
CC2A-2
ECO2
SL.E1
SL.E2
ECONOMIZER 2
EQUALIZER 1
EQUALIZER 2
2
2
2
IS485
ECO1
-+
BOARD (COM2)
ECONOMIZER 12
TO MAIN
OLR1
1
CC1A-2
1
12A
61A
CC1
CBA1-1
T2A
T1A
22A
T3A
CB1
CC1
L3L2
HVTB
L2A
L1A
L3A
L1
TDS2-1SEC
TDS1-1SEC61A
61B
62A
62B
2
CC3
CC4
2
2
2
OLR2OLR3
2
2
1
12B
D2 (MB)
T3C
T2C
23A 1
61BCC2A-2
CC2
CC4
T3B
22B
T2B
T1B
CBA2-1
T3D
T1D
T2D
COMP
2
CBA4-1
CB3
CC3
L2C
L3C
15
L3B
CB2
L1B
L2B
CC2
L3D
L1D
L2D
OLR4
D7 (MB)23B
CB4
CC4
2
2HATB
VFC FROM CUSTOMER PANEL
REMOVE JP2A
REMOVE JP3A65A
EFR2
VFC
31
31
32
32
EFR1
65AA3/D3 (MB)
A8/D8 (MB)
2GATB
32 31 34
T2
70A/B
71A/B
COMP
TI
L3
L1L2
1A
12
A1 A2
UVR
1
UVM
JU3 1-2 CLOSED
1-2 CLOSED
1-2 CLOSED
1-2 CLOSED
JU19
JU12
JU10
JUMPER SETUP ON
1-2 CLOSED
1-2 CLOSED
1-2 CLOSED
1-2 CLOSED
1-2 CLOSED
1-2 CLOSED
1-2 CLOSED
1-2 CLOSED
1-2 CLOSED
CLOSEDTU2
JU6
JU7
JU9
JU4
JU8
JU5
JU13
JU15
JU11
TD2TL2
CLOSEDOPEN
MAIN BOARD
MICROPROCESSOR CONTROLLERSequence of OperationThe following describes the sequence of operation for a two screw compressor chiller unit.Operation is similar for a one or four compressor unit.For initial start-up, the following conditions must be met:
· All power supplied to the unit shall be energized for 12 hours.
· Control power switch on for at least 5 minutes.
· All safety conditions satisfied.
· Press ESC on the microcomputer keypad.
· Chilled water pump running and chilled water flow switch contact closed.
· Customer interlock contact closed, if any.
STAGE - ON SEQUENCEStaging ON & OFF sequence, shall be accomplished by the Leaving water temperature control selection.
Stage #1:
If the Leaving Water Temperature is greater than the Stage 1- ON water temperature set point value, the Compressor #1liquid line solenoid & slider control valves shall be switched ON. Now the compressor is in the minimum or unloadedcapacity. The compressor capacity is varied to achieve the full/part load capacity as per the load demand.
As discharge pressure of Compressor #1 rises, the corresponding fans are energize accordingly to the fan stage-ON setpoint. If the discharge pressure falls below the fan stage-OFF set point value, the corresponding fans will turn off.
Stage #2:
If the Leaving Water Temperature is greater than the Stage 2- ON water temperature set point value, the Compressor #2liquid line solenoid & slider control valves shall be switched ON. Now the compressor is in the minimum or unloadedcapacity. The compressor capacity is varied to achieve the full/part load capacity as per the load demand.
As discharge pressure of Compressor #2 rises, the corresponding fans are energize accordingly to the fan stage-ON setpoint. If the discharge pressure falls below the fan stage-OFF set point value, the corresponding fans will turn off.
STAGE - OFF SEQUENCEDuring the staging OFF, the first-in last-out sequence is adopted, if equalization of compressor timing is not selected.Else the more used is switched off.
As the applied load decreases and when the leaving water temperature falls below the stage 2 -OFF water temperatureset point value, stage 2 is turned off.
If the leaving water temperature falls below the stage 1-OFF water temperature set point value, the stage 1 is turned off.
28
APPLICATION GUIDELINESINTRODUCTIONThese guidelines should be considered when designing systems and their installation utilizing Zamil ASh series liquidchillers. Stable operation, performance, energy efficiency and reliability of units is often dependent upon proper compli-ance with these recommendations. When any application varies from these guidelines, it should be referred with ZamilAir Conditioners for specific recommendations.
UNIT SELECTION/SIZINGUnit selection procedure and capacities are provided in this catalog for proper selection. The Zamil electronic selectionprogram may also be utilized for this purpose.
Over sizing chillers beyond a maximum limit of 5 – 10 % in order to assure adequate capacity or considering futureexpansions is not recommended. Over sizing adversely affects the operating efficiency due to erratic system operationand excessive compressor cycling which also results in reduced compressor life. It should be noted that, units operatemore efficiently when fully loaded rather than larger equipment operating at partial capacities. In addition, an oversizedunit is usually more costly to purchase, install and operate.
When over sizing is desired due to anticipation of future plant expansion, consider using multiple units. For example,install a single chiller for the present load requirement and install a second chiller for the foreseen additional load demanddue to expansion. Further, it is also recommended that installing two chillers instead of a single chiller be considered inapplications where partial load operation at low capacities is necessary.
Operation of two chillers at higher loading is preferred to operating a single chiller at or near its minimum possible capacity.
FOULING FACTOR AND WATER REQUIREMENTThe tabulated performance data provided in this catalog are based on a fouling factor of 0.00010 hr-ft2-0F/Btu (0.000018 m2-0C/W).As fouling factor is increased, unit capacity decreases and power input increases. For unit selection at other fouling factors, applyappropriate correction factor from the table provided in this catalog.
These chillers are suitable for operation with well maintained water systems. Using unclean and untreated water mayresult in scale and deposit formation causing reduced cooler efficiency or heat transfer and corrosion or pitting leading topossible equipment damage. The more scale forming material and suspended solids in the system water, the greater thechances of scale and deposit formation and fouling. These include calcium, magnesium, biological growth (algae, fungiand bacteria), dirt, silt, clays, organic contaminants (oils), silica, etc. which should be kept to the minimum to retard scaleand deposit formation. In order to prevent corrosion and pitting, the pH value of the water flowing through the cooler mustbe kept between 7 and 8.5. Zamil recommends that a water treatment specialist is consulted to provide and maintainwater treatment, this is particularly critical with glycol systems.
EFFECT OF ALTITUDE ON UNIT CAPACITYThe tabulated performance data provided in this catalog are for use at or near sea level altitude application. At altitudessubstantially above sea level, the decreased air density will reduce condenser capacity and therefore unit capacity. For unitselection at these higher altitudes, apply appropriate correction factor from the table provided in this catalog.
HIGH AMBIENT CONSIDERATIONThese chillers are designed for year round operation over a range of ambient temperatures. As a standard, these chillerscan start and operate satisfactorily up to 1250F (520C) ambient temperature at rated nominal voltage.
WATER FLOW RATES AND COOLER PRESSURE DROPThe maximum and minimum water flow rates for all unit models and the pressure drop chart are provided in this catalog.The design water flow rate must be within this range. Design flow rates below the minimum limits will result in laminarflow causing freeze-up problems, stratification and poor control and flow rates beyond the maximum limits cause exces-sive pressure drop and severe tube erosion.
During unit operation, water flow rate must not vary more than ± 5% from the design flow rate. The water flow switch should becalibrated accordingly. The piping and pumping layout should be right for the application and must assure proper water returnand circulation. When using glycol solution, flow rate and pressure drop are higher than with water, therefore care must betaken not to exceed the limits. In such applications, consult Zamil Air Conditioners for specific recommendations.
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COOLER FLUID (WATER OR GLYCOL) TEMPERATURES RANGEUnit can start and pull down from 950F (350C) entering fluid temperature. The design leaving chilled fluid temperature(LCWT) range as mentioned earlier in the tabulated performance data is 40 to 500F. The design entering chilled fluidtemperature range is 50 to 600F. The design cooler temperature drop (∆T) range is 5 to 150F.
The tabulated performance data provided in this catalog is based on a chilled water temperature drop of 100F. Units maybe operated at any desired temperature drop within the range of 5 to 150F as long as the temperature and flow limits arenot violated and appropriate correction factors are applied on the capacity and power input. The Zamil electronic selec-tion program can be very handy in selecting equipment at different temperature drops.
It should be noted that temperature drop outside the aforesaid range is not permitted as it is beyond the optimum range ofcontrol and could adversely affect the functioning of microprocessor controller and may also prove to be detrimental for theequipment.
FLOW RATES AND/OR WATER TEMPERATURES OUT OF RANGECertain applications (particularly process cooling jobs) call for flow rates and/or water temperatures that are outside theabove mentioned limits/range. Our chillers can be utilized for these applications by selecting the chiller based on thespecific process load and making a suitable piping and mixing arrangement in order to bring the flow rates and/or watertemperatures relevant to the chiller within acceptable limits.
Example 1:An application requires 240 GPM of water at 450F and the return water temperature is 650F.A standard chiller can be used for this application as shown in the following basic schematic layout (single mixing arrange-ment).
Example 2:An application requires 192 GPM of water at 650F and the return water temperature is 800F.A standard chiller can be used for this application as shown in the following basic schematic layout (dual mixing arrangement).
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Load200 TR
200 TRChiller
54.6°F500 GPM
45°F500 GPM
45°F240 GPM
65°F240 GPM
45°F260 GPM
Load120 TR
120 TRChiller
45°F340 GPM
80°F109.8 GPM
45°F257.8 GPM
80°F82.2 GPM
53.4°F340 GPM
80°F192 GPM
65°F192 GPM
53.4°F340 GPM
45°F82.2 GPM
COOLER FREEZE PROTECTIONIf the unit is located in an area where ambient temperatures fall below 320F (00C), cooler protection in the form of EthyleneGlycol Solution is required to protect the cooler and fluid piping from low ambient freeze-up. This glycol solution must beadded to the water system loop to bring down the freezing point of water to a difference of 150F (8.30C) below minimumoperating ambient temperature.
Using this glycol solution causes a variation in unit performance, flow rate and pressure drop, therefore appropriatecorrection factors from the aforementioned table in this catalog should be applied.
MULTIPLE CHILLER ARRANGEMENT OR PLANT CONFIGURATIONA multiple chiller system has two or more chillers connected by parallel or series piping to a common distribution system.Multiple chiller arrangements offer the advantage of operational flexibility, standby capacity and less disruptive mainte-nance. Also, they offer some standby capacity if repair work must be done on a chiller from a set of duty chillers. Startingin-rush current is reduced, as well as power costs at partial-load conditions.
A multiple chiller arrangement should be provided if the system load is greater than a single chiller capacity, standbycapability is desired, large temperature drop (greater than 150F) is desired or application calls for splitting the totalcapacity for better part load operation.
In designing a multiple chiller plant, units of same size should be preferred over different sizes to facilitate balanced waterflow. It is mandatory that cooler flow rates must be balanced to ensure proper flow to each chiller based on its respectivecapacity. As mentioned above, two basic multiple chiller systems are used: parallel and series chilled water flow.
In the parallel arrangement, liquid to be chilled is divided among the liquid chillers; the multiple chilled streams arecombined again in a common line after chilling. Water temperatures (EWT or LWT) can be used to cycle units On and Offbased on the cooling demand. Parallel arrangements permit adding chillers in the future for plant expansion with theappropriate considerations beforehand.
In the series arrangement, the chilled liquid pressure drop may be higher unless coolers with fewer liquid-side passes orbaffles are used. No over chilling by either unit is required, and compressor power consumption is lower than it is for theparallel arrangement at partial loads. It is also possible to achieve higher overall entering to leaving temperature drops,which may in turn provide the opportunity for lower chilled water design temperature, lower design flow and resultinginstallation and operational cost savings. Series chiller arrangements can be controlled in several ways based on thewater temperatures depending on cooling demand.
A valved piping bypass is suggested around each chiller to facilitate future servicing as it gives the personnel an optionfor service without a complete shutdown.
Zamil recommends the parallel arrangement for design temperature drops (∆T) up to 150F and the series arrangementbeyond that i.e., 16 to 200F. Complete design details on these parallel and series chilled water flow arrangements can befound in the ASHRAE handbooks and other design literature which should be referred by the designer in preparing hisdetailed designs.
PIPING ARRANGEMENTS AND PLANT LAYOUTOur chillers are suitable for incorporating in ‘Two Pipe’ single temperature systems or ‘Four Pipe’ independent loadsystems. The system piping circuit (load distribution circuit) should be basically parallel piping either Direct Return orReverse Return system with a good pumping arrangement.
The method of circuiting and pumping is a judgment decision by the designer. The designer must weigh the pros andcons of cost, nature of load and configuration of building, energy economics, flexibility, installation requirements andothers to determine the best arrangement for his project. In all cases, it must be ensured that the design water flow isconstantly maintained through the chillers at all stages of operation. Some suggested arrangements with basic sche-matic layouts are as follows:
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A. Single or multiple chillers with constant water flow through chillers and load system:
In this type of arrangement, constant water flow through the chillers and load distribution piping circuit is maintained.Before proceeding further, a brief explanation on the operation of a typical chilled water system / valves which is funda-mental to the design or analysis of a system.
Where multiple zones of control are required, the various load devices are controlled first; then the source (chillers)system capacity is controlled to follow the capacity requirement of the loads. Control valves are commonly used to controlloads. These valves control the capacity of each load by varying the amount of water flow through the load device.Control valves for these applications are two-way (straight-through) and three-way valves. The effect of either valve is tovary the amount of water flowing through the load device. With a two-way valve, as the valve strokes from full-open to full-closed, the quantity of water flowing through the load gradually decreases from design flow to no flow. The three-waymixing valve has the same effect on the load as the two way valve - as the load reduces, the quantity of water flowingthrough the load decreases in proportion to the load and the difference amount is directed through a bypass.
In terms of load control, a two-way valve and a three-way valve perform identical functions—they both vary the flowthrough the load as the load changes. The fundamental difference between the two-way valve and the three-way valve isthat as the source or distribution system sees the load, the two-way valve provides a variable flow load response and thethree-way valve provides a constant flow load response.
Referring to the foregoing schematic layout, this is a conventional system and is not as energy efficient as the two-wayvalve systems especially on the pumping side due to constant water circulation in the system. On multiple chiller instal-lations, pumps are required to operate continuously and the sequencing of chillers is dependent on water temperatures.
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CHWS
CHWR
Load Load
3-WayValve
3-WayValve
Constant Speed Pump
Chiller
B. Single or multiple chillers with constant water flow through chillers and variable water flow through load system:
In this type of arrangement, constant water flow through the chillers is maintained, however the quantity of water flowingthrough the load distribution piping system decreases in proportion to the load and the difference amount is directedthrough a bypass pipe that connects the supply and return headers. Brief sequence of operation is as follows:
The bypass with its control valve and flow meter provides the design flow required through the chillers. Flow meter FM1measures the actual flow to the chilled water system. The system flow is compared with the required flow for the chillers.The difference is made up through the bypass and is monitored by flow meter FM2. This flow meter controls the bypassvalve to maintain the desired flow in the bypass based on the set points in the system controller (the valve is positionedby sum of flow meters FM1 and FM2).
The speed of the chiller pumps is controlled by the differential pressure sensor/transmitter, maintaining the desireddifferential pressure (∆P) across the cooling coils, their control valves and the branch piping. The pump speed is modu-lated within a certain range in order to reduce the pumping head and not to alter the water flow rate (the duty flow rate ofthe pumps remains constant). Each chiller-pump combination operates independently from the remaining chillers andeach pump is shutdown when the respective chiller is stopped. Instead of using water temperature as an indicator ofdemand, the sequencing of chillers is dependent on water flow. The chillers are rated in gallons per minute; the actualflow to the system determines the number of chillers that should be in operation.
Energy is saved because the system head is reduced appreciably when there are light cooling loads on the system anddue to cycling of pumps.
Note: Some designers may consider installing constant speed pumps and utilize pressure relief bypass control valvescontrolled by a differential pressure sensor/controller to maintain a fixed differential pressure between the supply andreturn mains of the chilled water system in order to accommodate for the required chiller flow and to achieve some formof variable volume system. This method is not recommended as it’s a wasteful practice because a considerable amountof energy is lost, an almost constant volume system results and the pumping energy remains substantially that requiredat full system flow and head.
Also, the problem with this system is improper control of the bypass valve which does not guarantee proper flow throughthe chillers and high differential pressures in the control valves on the cooling coils when the system friction subsides atlow loads which can cause lifting of the valve stems or wire cutting of the valve seats. Further, as all the water must bepumped at a head equal to or greater than the design head, the pump or pumps are forced to run up the pump headcapacity curve, which increases the overpressure on the system and also increases the wear on the pumps, since theyare forced to operate with high radial thrusts.
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2-Way Valve
CHWS
Bypass ControlValve
P
Bypass Line
SystemController
FM-1
FM-2
Load
2-Way Valve
Chiller
Variable Speed Pump
CHWR
Load
C. Single or multiple chillers with constant water flow through chillers and variable water flow through loadsystem (primary/secondary pumping arrangement):
This system is called a Primary – Secondary System and in this arrangement, the generation zone is separated from thetransportation or distribution zone. In this type of arrangement also, constant water flow through the chillers is main-tained, however the quantity of water flowing through the load distribution pump/piping system decreases in proportion tothe load and the difference amount is directed through a bypass pipe that connects the supply and return headers. Thisbypass pipe forms a ‘Hydraulic Coupling’ between the points A – B and is also called as Common Bridge or DecouplingLine. The sequence of operation is similar as the foregoing system with the following explanation:
The speed of the secondary chiller pump is controlled by the differential pressure sensor/transmitter, maintaining thedesired differential pressure (∆P) across the cooling coils, their control valves and the branch piping. This pump speed ismodulated within a broad range in order to reduce the pumping head and alter the water flow rate based on the changingload conditions.
The primary pumps are constant speed pumps and the design flow rate through the chillers remains constant. Eachchiller-pump combination operates independently from the remaining chillers and each pump is shutdown when therespective chiller is stopped. The sequencing of chillers is dependent on water flow. If greater flow is demanded than thatsupplied by the chiller-pumps, return water is forced through the bypass into the supply header. This flow indicates aneed for additional chiller capacity and another chiller-pump starts. Excess bypass flow with reference to the set points inthe system controller in the opposite direction i.e., into the return header indicates overcapacity and the chiller-pumps areturned off.
Energy is saved because the system head and water flow rate are reduced on the Secondary Pump when there arepartial cooling loads on the system and due to cycling of Primary Pumps.
UNIT LOCATION AND INSTALLATIONThese chillers are designed for outdoor installation and can be installed at ground level or on a suitable rooftop location.In order to achieve good operation, performance and trouble-free service, it is essential that the proposed installationlocation and subsequent installing procedures meet the following requirements:
• The most important consideration while deciding upon the location of air cooled chillers is the provision for supply ofadequate ambient air to the condenser and removal of heated discharge air from the condenser. This is accomplishedby maintaining sufficient clearances which have been specified in this Catalog around the units and avoiding obstruc-tions in the condenser air discharge area to prevent the possibility of warm air circulation. Further, the condenser fansare propeller type and are not recommended for use with ductwork or other hindrances in the condenser air stream.Where these requirements are not complied, the supply or discharge airflow restrictions or warm air recirculation willcause higher condensing temperatures resulting in poor unit operation, higher power consumption and possible even-tual failure of equipment.
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Flow Sensor
CHWR
P
2-Way Valve
Load
CHWSA
B
Variable Speed Secondary Pump
SystemController
Load
2-Way Valve
Constant SpeedPrimary Pump
Chiller
• The unit’s longitudinal axis should be parallel to the prevailing wind direction in order to ensure a balanced air flowthrough the condenser coils. Consideration should also be given to the possibility of down-drafts caused by adjacentbuildings, which may cause recirculation or uneven unit airflow. For locations where significant cross winds are ex-pected, an enclosure of solid or louver type is recommended to prevent wind turbulence interfering with the unit airflow.When units are installed in an enclosure, the enclosure height should not exceed the height of the unit.
• The location should be selected for minimum sun exposure and away from hot air sources, steam, exhaust vents andsources of airborne chemicals that could attack the condenser coils and steel parts of the unit. Avoid locations wherethe sound output and air discharge from the units may be objectionable.
• If the location is an area which is accessible to unauthorized persons, steps must be taken to prevent access to the unitby means of a protective fence. This will help to prevent the possibility of vandalism, accidental damage or possibleharm caused by unauthorized removal of panels or protective guards exposing rotating or high voltage components.
• The clearance requirements prescribed above are necessary to maintain good airflow and provide access for unitoperation and maintenance. However, it is also necessary to consider access requirements based on practical consid-erations for servicing, cleaning and replacing large components.
• The unit must be installed on a ONE-PIECE, FLAT and LEVELLED {within 1/2'' (13 mm) over its length and width} /CONCRETE BASE that extends fully to support the unit. The carrying or supporting structure should be capable ofhandling complete operating weight of the unit as given in the Physical Data tables in this Catalog.
• For ground level installations, it must be ensured that the concrete base is stable and does not settle or dislocate uponinstallation of the unit which can strain the refrigerant lines resulting in leaks and may also cause compressor oil returnproblems. It is recommended that the concrete slab is provided with appropriate footings. The slab should not beconnected to the main building foundation to avoid noise and vibration transmission.
• For rooftop installations, choose a place with adequate structural strength to safely support the entire operating weightof the unit. The unit shall be mounted on a concrete slab similar to ground installations. The roof must be reinforced forsupporting the individual point loads at the mounting isolator locations. It must be checked and ensured that theconcrete base is perfectly horizontal and levelled, especially if the roof has been pitched to aid in water removal. Itshould be determined prior to installation if any special treatment is required to assure a levelled installation else itcould lead to the above mentioned problems.
• Vibration isolators are necessary for installing these chillers in order to minimize the transmission of vibrations. Thetwo types of vibration isolators generally utilized for mounting these units are Neoprene Pads and Spring Isolators.Neoprene Pads are recommended for ground level normal installations jobs where vibration isolation is not critical andjob costs must be kept to a minimum. Spring Isolators are recommended for ground level installations which are noise-sensitive areas or exposed to wind loads and all roof top installations. For critical installations (extremely noise andvibration sensitive areas), follow the recommendations of structural and acoustical consultants.
• Based on the specific project requirements, choose the type of vibration isolators best suited for the application. Care-fully select the vibration isolators’ models / configuration based on the respective point loads and place each mount in itscorrect position following the Load Distribution Data and Mounting Drawings provided in this Catalog. Refer to theSchematic Mounting Layout drawings provided in the IOM manual of these chillers for further details in this regard.
COOLER PIPING CONNECTIONSThe following pertinent guidelines are served to ensure satisfactory operation of the units. Failure to follow these recom-mendations may cause improper operation and loss of performance, damage to the unit and difficulty in servicing andmaintenance:
• Water piping must be connected correctly to the unit i.e., water must enter from the inlet connection on the cooler andleave from the outlet connection.
• A flow switch must be installed in the field piping at the outlet of the cooler (in horizontal piping) and wired back to theunit control panel using shielded cable. There should be a straight run of piping of at least five pipe diameters on eitherside of the flow switch. Paddle type flow switches can be obtained from Zamil which are supplied as optional items.
• The chilled water pump(s) installed in the piping system should discharge directly into the unit cooler. The pump(s)may be controlled external to the unit - but an interlock must be wired to the unit control panel (as shown in the wiringdiagram) so that the unit can start only upon proof of pump operation.
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• Flexible connections suitably selected for the fluid and pressure involved should be provided as mandatory in order tominimize transmission of vibrations to the piping / building as some movement of the unit can be expected duringnormal operation. The piping and fittings must be separately supported to prevent any loading on the cooler.
• The cooler must be protected by a strainer, preferably of 20 mesh, fitted as close as possible to the liquid inlet connec-tion, and provided with a means of local isolation.
• Thermometer and pressure gauge connections should be provided on the inlet and outlet connections of each cooler.Pressure gauges are recommended to check the water pressure before and after the cooler and to determine if anyvariations occur in the cooler and system. When installing pressure taps to measure the amount of pressure dropacross the water side of the cooler, the taps should be located in the water piping a minimum of 24 inches downstreamfrom any connection (flange etc.) but as near to the cooler as possible.
• Drain and air vent connections should be provided at all low and high points in the piping system to permit completedrainage of the cooler and piping as well as to vent any air in the pipes. Hand shut-off valves are recommended for usein all lines to facilitate servicing.
• The system water piping must be flushed thoroughly before connecting to the unit cooler. The cooler must not beexposed to flushing velocities or debris released during flushing. It is recommended that a suitably sized bypass andvalve arrangement is installed to allow flushing of the piping system. The bypass can be used during maintenance toisolate the cooler without disrupting flow to other units.
• The following is a suggested piping arrangement at the chiller for single unit installations. For multiple chiller installa-tions, each unit should be piped as shown:
Note: For chillers with two coolers, the connecting pipes for entering and leaving water on one cooler must be joined tothe corresponding pipes on the other cooler before connecting to the main headers in the system piping.
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OUT
IN
Isolating Valve - Normally Open
Isolating Valve - Normally Closed
Balancing Valve
Flow meter
Strainer
Pressure tapping
Flow Switch
Connection (flanged / Victaulic)
Pipe work
Flexible connection
CHILLED FLUID VOLUME REQUIREMENTThe volume of water in a piping system loop is critical to the smooth and proper operation of a chilled water system. Ifsufficient volume of water is not there in the system, the temperature control can be lost resulting in erratic systemoperation and excessive compressor cycling. Therefore, to prevent this effect of a ‘Short Water Loop’ ensure that totalvolume of water in the piping system loop equals or exceeds 3 Gallons per Nominal Ton of cooling capacity for standardair conditioning applications and 6 Gallons per Nominal Ton of cooling capacity for process cooling jobs where accuracyis vital and applications requiring operation at very low ambient temperatures and low loading conditions.
For example, chiller model ASh100 operating with a design water flow rate of 215 GPM for a standard air conditioningapplication would require 100 (Nom. Cap.) x 3 = 300 Gallons of water in the piping system loop.
To achieve the aforementioned water volume requirements, it may be necessary to install a tank in the piping systemloop to increase the volume of water in the system and therefore, reduce the rate of change of return water temperature.This tank should be provided on the return water side to the chiller and the tank should be baffled to ensure that there isno stratification and the entering stream thoroughly mixes with the tank water. See recommended tank design schemat-ics below:
SUGGESTIONS ON SYSTEM DESIGN AND PIPING PRACTICESThe prospective chilled water system should be designed to the specific requirements of the owner and to achieve themost efficient system possible. Following are some recommendations:
• The first decision a designer of a chilled water system must make is the selection of the temperature differential.Temperature differential is the difference between the supply water and the return water temperatures. There is no onetemperature difference for all chilled water systems. The actual temperature difference that is selected for a specificinstallation is determined by the cost of the cooling coils for various temperature differences and the effect that higherdifferences may have on the operating cost of the chillers. A careful balance between energy savings and first costshould be made by the designer. These are the decisions that must be made by the designer for each application andonly experienced designers should entertain water temperature differences in excess of 120F on chilled water sys-tems. A number of conditions must be recognized before making the final selection of temperature differential:
a) An increase in temperature differential decreases water flow and therefore saves pumping energy.
b) An increase in temperature differential may increase the cost of cooling coils that must operate with a higher meantemperature difference.
c) Higher temperature differentials increase the possibilities of loss of temperature difference in coils due to dirt on theair side and chemical deposits on the water side of them.
d) Laminar flow on the water side due to lower velocities at low loads on a coil is always a concern of the water systemdesigner. The possibility of laminar flow is greater with higher temperature differences. Laminar flow reduces theheat-transfer rate and should not occur in a coil at any point in its load range. Many systems operate inefficientlybecause of coils that were selected at too low a friction loss through them at design load; therefore, at reducedloads and flows, they operate with laminar flow.
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TANK SCHEMATIC
• Control of Return Water Temperature: Return water temperature is one of the most important operating values for achilled water system. It tells the operator just how good a job the control system and coils are doing in convertingenergy from the chillers to the air or water systems that are cooling the building. This is such a basic criterion that itshould be addressed early in the design of a chilled water system. The proper method of controlling return temperatureis through the correct selection of control valves and cooling coils. In conclusion, one of the designer’s most importanttasks is the selection of a sound temperature differential that will provide maximum possible system efficiency. Thesecond step in this process is to ensure that the differential is maintained after the system is commissioned.
• The water system should be configured to distribute the water efficiently with a minimum use of energy-wastingdevices. These devices are listed here:
a) Three-way temperature control valves
b) Balancing valves, manual or automatic
c) Pressure-reducing or pressure-regulating valves
• The piping should be designed without
a) Reducing flanges or threaded reducing couplings
b) Bullhead connections (e.g., two streams connected to the run connections of a tee with the discharge on the branchof the tee)
• The friction for the piping should be calculated for all pipe runs, fittings and valves.
• Cooling coils should be selected with a high enough water velocity in the tubes to avoid laminar flow throughout thenormal load range imposed on the coils.
• Coil control valves and their actuators should be sized to ensure that they can operate at all loads on the systemwithout lifting the valve head off the valve seat.
• Expansion tank should be provided to so that water volume changes can be accommodated. Expansion tanks aregenerally connected to the suction side of the pump - lowest pressure point.
• Pumps in parallel must always operate at the same speed. There may be some exceptional cases where parallelpumps are operated at different speeds, but only experienced designers should make evaluations for such a proposedoperation. Also, it is better to use pumps of the same size when operating them in parallel. Variable speed pumpsshould be controlled so that pumps operating in parallel never have more than one percent difference in actual oper-ating speed. Mixing of constant and variable speed pumps in parallel operation is wrong and leads to disastrousresults.
• Distribution pumps should be selected for maximum efficiency at the design condition and within the economic con-straints of the project. Distribution pumps should be added and subtracted to avoid operation of pumps at points ofhigh thrust and poor efficiency. Pump sequencing should achieve maximum possible system efficiency.
• Differential pressure control (bypass) valves should never be installed at the pump discharges.
• Check valves should be provided in pump discharges when pumps are operating in parallel. Pump discharge checkvalves should be center guided, spring loaded, disc type check valves and should be sized so that the check valve isfull open at design flow rate. Generally this will require the check valve to be one pipe size smaller than the connectingpiping.
• Circuiting Chilled water to Multiple Chillers : There are fundamentals for the circuiting of chillers that should not beviolated in order to achieve maximum efficiency. Some of these are:
a) Design the piping arrangement so that energy consumption of chillers is not increased.
b) Arrange the piping so that all chillers receive the same return water temperature.
c) Ensure that the required design water flow through the coolers is always maintained.
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PROPER CLEARANCETO BE PROVIDED
SPREADER BAR
SPREADER BAR
PROPER CLEARANCETO BE PROVIDED
LIFT LIFT
SPREADER BAR
PROPER CLEARANCETO BE PROVIDED
LIFT LIFT
ATTENTION TO RIGGERSHook rigging sling thru holes in base rail, as shown below.Holes in base rail are centered around the unit center of gravity.Center of gravity is not unit center line.Ensure center of gravity aligns with the main lifting point before lifting.Use spreader bar when rigging, to prevent the slings from damaging the unit.
CAUTIONAll panels should be in place when rigging.Care must be taken to avoid damage to the coils during handling.Insert packing material between coils & slings as necessary.
RIGGING INSTRUCTIONS
MODELS: ASh100B - ASh200B
MODELS: ASh215B - ASh260B
MODELS: ASh300B - ASh415B
39
INSTALLATION CLEARANCE
FIGURE - 2CORNER WALL
NOTE: 1. All dimensions are in mm.2. Pit installations are not recommended. Re-circulation of hot condenser air in combination with surface air
turbulence can not be predicted, hot air re-circulation will severely affect unit efficiency (EER) and cancause high pressure or fan motor temperature trips.
FIGURE - 1STRAIGHT WALL
MODEL NUMBER A BASh100B - ASh260B 3000 2000
ASh300B - ASh415B 3500 2500
40
WALL
MOUNTING LOCATION
MODELS: ASh130B - ASh200B
MODELS: ASh215B - ASh260B
MODELS: ASh300B - ASh415B
MODELS: ASh100B
NOTE: All dimensions are in mm.
MODEL AASh130B 1586
ASh145B 1586
ASh160B 2094
ASh185B 2094
ASh200B 2094
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LOAD DISTRIBUTION, kg. (ALUMINUM CONDENSER COIL)MODEL No. R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14
ASh100B 720 688 673 637 606 590 - - - - - - - -
ASh130B 728 700 691 682 627 600 591 582 - - - - - -
ASh145B 749 721 712 703 645 618 609 599 - - - - - -
ASh160B 824 789 778 766 739 704 693 682 - - - - - -
ASh185B 1038 1004 992 981 864 830 818 807 - - - - - -
ASh200B 1044 1010 998 987 867 833 821 810 - - - - - -
ASh215B 907 869 850 844 838 842 804 785 779 773 - - - -
ASh240B 1016 978 959 953 946 903 865 846 840 833 - - - -
ASh260B 1121 1083 1064 1058 1052 960 923 904 897 891 - - - -
ASh300B 882 862 852 842 832 827 822 775 755 745 735 725 720 715
ASh320B 982 962 952 942 932 927 922 839 819 809 799 789 784 779
ASh360B 1128 1108 1098 1088 1078 1073 1068 919 899 889 879 869 864 859
ASh370B 1141 1121 1111 1101 1091 1086 1081 942 922 912 902 892 887 882
ASh400B 1150 1130 1120 1110 1100 1095 1090 946 926 916 906 896 891 886
ASh415B 1178 1158 1148 1138 1128 1123 1118 998 978 968 958 948 943 938
LOAD DISTRIBUTION, kg. (COPPER CONDENSER COIL)MODEL No. R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14
ASh100B 794 763 747 711 680 664 - - - - - - - -
ASh130B 776 749 739 730 676 648 639 630 - - - - - -
ASh145B 819 791 782 773 715 688 678 669 - - - - - -
ASh160B 907 873 861 850 823 788 777 765 - - - - - -
ASh185B 1148 1114 1102 1091 974 940 928 917 - - - - - -
ASh200B 1154 1120 1108 1097 977 943 931 920 - - - - - -
ASh215B 974 936 917 911 905 909 871 852 846 840 - - - -
ASh240B 1098 1060 1041 1034 1028 985 947 928 922 915 - - - -
ASh260B 1218 1180 1162 1155 1149 1057 1020 1001 994 988 - - - -
ASh300B 981 961 951 941 931 926 921 873 853 843 833 823 818 813
ASh320B 1100 1080 1070 1060 1050 1045 1040 958 938 928 918 908 903 898
ASh360B 1247 1227 1217 1207 1197 1192 1187 1038 1018 1008 998 988 983 978
ASh370B 1260 1240 1230 1220 1210 1205 1200 1060 1040 1030 1020 1010 1005 1000
ASh400B 1268 1248 1238 1228 1218 1213 1208 1064 1044 1034 1024 1014 1009 1004
ASh415B 1297 1277 1267 1257 1247 1242 1237 1117 1097 1087 1077 1067 1062 1057
42
R6
R1
