Screw Compressor ASY (R-134) series.pdf

Air Cooled Screw Water ChillersASY Series

ASY050B thru ASY500B50 TR thru 487 TR

176 kW thru 1715 kW

R-134a

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

Model decoding ........................................................................................................................................ 2

Unit features, standard specifications & options.................................................................................... 3-7

Physical data ....................................................................................................................................... 8-10

Selection procedure .......................................................................................................................... 11-12

Performance data .............................................................................................................................. 13-18

Electrical data .................................................................................................................................... 19-21

Water side pressure drop ....................................................................................................................... 22

Recommended installation for sensor & water flow switch ..................................................................... 23

Unit dimensions ................................................................................................................................ 24-29

Typical schematic wiring diagram ...................................................................................................... 30-31

Microprocessor controller ....................................................................................................................... 32

Troubleshooting guide ....................................................................................................................... 33-34

Application guidelines ........................................................................................................................ 35-44

Rigging instructions ................................................................................................................................ 45

Installation clearance .............................................................................................................................. 46

Mounting location ................................................................................................................................... 47

Load distribution ................................................................................................................................ 48-49

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FEATURES These ASY air cooled screw water chillers offer the ultimate combination of energy saving design, superior engineeringfeatures and flexibility of application as required by today’s market.

* These chillers incorporate the newest advanced microprocessor controller. This controller monitors analog and digitalinputs to achieve precise control & protective functions of the air cooled water chiller units. This microprocessorcontroller is complete with all the hardware and software necessary to control the chiller unit and ensures its effi-ciency and reliability.

* 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.

* Compact unit design and excellent serviceability.

* All packaged chillers incorporate compact water coolers with enhanced inner grooved copper tubes bundled into a"U" shape and expanded into a steel tubular sheets which offer efficient water flow as well as heat transfer designresulting in optimal unit performance.

* High Energy Efficiency Ratio (EER) semi-hermetic compact twin screw compressors are 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 totally enclosed air over type (TEAO) with class ''F'' winding insulation and ball bearings.Inherent thermal protection of the automatic reset type and specially designed for outdoor application is included.

3

CAPACITY CONTROLThese 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 between 10% to 100% on anaverage. This system has the following advantages:

1. Infinite capacity modulation that 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 to approximately 50% of its compressor lowest unloadedcapacity.

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 their perfect profileform ratio 5:6. They are simple and of robust construction with slider control valve for capacity unloading, suction/discharge shut-off valves, check valve in discharge gas outlet, oil sight glass, oil fill/drain service valve, directly flanged-on three stage oil separator 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 motorwinding temperature, phase reversal, discharge gas temperature protection controls.

CONDENSER COILSW-configuration condenser coils are corrugated fin and tube type, constructed of seamless 3/8" dia. & 0.011" (0.27 mm)thick copper tubes, mechanically bonded to aluminum fins for maximum heat transfer efficiency.

As a standard on aluminum fins, ZAC provides Coil ResisTec Coating, which is a single component of aluminumimpregnated coating applied on the fins of heat exchanging coils. The product has been designed for Middle East climateconditions. A high chemical, abrasion and UV resistance has been proven in both laboratories and on field environment.The coating can be applied at the Zamil Air Conditioners factory as well as in the field for maintenance or rejuvenationpurposes.

The fins have full self spacing collars which completely cover each tube. The staggered tube design improves thethermal efficiency. End plates support sheets are 14 gauge galvanized steel, formed to provide structural strength.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 are identifiedwith cable 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 of totally enclosedair 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 toremotely 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 and discharge pressures

· 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: Protects 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.

CRANKCASE HEATERS: Each compressor has immersion type crankcase heater. The compressor crankcase heateris always on when the compressors are de-energized. This protects 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.

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.

COMPRESSOR CIRCUIT BREAKERS: Protects against compressor branch circuit fault. When tripped (manually orautomatically), the breaker opens the power supply to the compressor and control circuit through auxiliary contacts.

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 is 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.

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 to 50%of its unloaded capacity. Under low ambient condition, it controls temperature by eliminating the need to cycle the compressoron 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 determined.

UNIT MOUNT SPRING ISOLATORS: This housed spring assemblies have a neoprene friction pad on the bottom toprevent vibration transmission.

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: Protects the condenser coils from physical damage.

COMPRESSOR/COOLER GUARD: Protects the compressor from vandalism.

COMPRESSOR ENCLOSURE BOX: Reduces compressor operating noise and keeps the compressor clean.

FLANGED COOLER CONNECTION: Easy on-site piping connections.

COOLER HEATER WRAPPED: Prevents freezing up of water on low ambient temperature.

COPPER FINS/TUBES CONDENSER COILS: For seashore salty corrosive environments.

ResisTec COATED COPPER FINS/TUBES CONDENSER COILS: For seashore or acid corrosive environments.

BMS: BACNET, MODBUS, GSM and stand alone remote display panel.

POWER LINE ANALYZER: Performs motor current limitation. Protects against high motor current & over/under voltage.

MULTI ResisTec: A two component coating system that withstands the extreme climate conditions. The coating can beapplied to all metal parts of HVAC equipment; the piping, the compressors and grids might require a different pre-treatment and layer build up. Please check ResisTec product information sheets, the heat exchangers can not be coatedusing this type. The coating can be applied at the Zamil Air Conditioners factory as well as in the field for maintenance orrejuvenation purposes.

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

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UNIT SIZE ASY050B ASY060B ASY070B ASY080B ASY090B ASY100B ASY120B ASY130B ASY140B ASY150B

COMPRESSOR

PART NUMBER 208/230V-3Ph-60Hz 800-683-13 800-683-16 800-683-19 800-683-22 800-683-13 (2) 800-683-13 (2) 800-683-16 (2) 800-683-19 (2) 800-683-19 (2) 800-683-19 (2)

380V-3Ph-60Hz 800-683-14 800-683-17 800-683-20 800-683-23 800-683-14 (2) 800-683-14 (2) 800-683-17 (2) 800-683-20 (2) 800-683-20 (2) 800-683-20 (2)

460V-3Ph-60Hz 800-683-15 800-683-18 800-683-21 800-683-24 800-683-15 (2) 800-683-15 (2) 800-683-18 (2) 800-683-21 (2) 800-683-21 (2) 800-683-21 (2)

NUMBER OF COMPRESSORS 1 1 1 1 2 2 2 2 2 2

OIL CHARGE PER COMPRESSOR, Liters 15 22 22 22 15 15 22 22 22 22

CAPACITY CONTROL (STEPLESS) % 100 - 50 100 - 25

MOTOR OVERLOAD PROTECTION (INTERNAL) ELECTRONIC

OIL LUBRICATION INJECTION

TOTAL CRANKCASE HEATER WATTS 200 300 300 300 400 400 600 600 600 600

REFRIGERANT R-134a

EXPANSION DEVICE ELECTRONIC EXPANSION VALVE

CONTROL VOLTAGE 220V-1Ph-60Hz

AIRCOOLED CONDENSER

CONDENSER Tube Dia.- Rows - Fins per inch 3/8–2–14 3/8–3–14 3/8–4–14 3/8–4–14 3/8–4–14 3/8–4–14 3/8–3–14 3/8–4–14 3/8–4–14 3/8–3–14

COIL Total face area, Sq. ft. 87.5 87.5 87.5 87.5 100.1 100.1 140 140 140 175

AIRFLOW, CFM 45264 43920 47644 47644 63798 63798 93256 87032 87032 116570

NUMBER OF FAN/FAN DIA.,mm 4/762 4/762 4/800 4/800 6/800 6/800 8/800 8/800 8/800 10/800

FAN MOTOR RPM @ 230/380/460-3-60 1100/1100/1100 1100/1100/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100

COOLER

COOLER PART NUMBER 800-732-01 800-732-05 800-732-05 800-732-05 800-732-13 800-732-13 800-732-21 800-732-25 800-732-33 800-732-41

SHELL DIAMETER, mm 219.1 273 273 273 323.8 323.8 323.8 323.8 323.8 406.4

TOTAL LENGTH, mm 2316 2168 2168 2168 2498 2498 2698 2698 2698 2741

WATER HOLDING VOLUME, Liters 49.3 58 58 58 142 142 129.5 113.5 113.5 161.7

WATER IN/OUT PIPE DIA.mm 75 100 100 100 125 125 125 125 125 150

ECONOMIZER

PART NUMBER N.A. N.A. N.A. N.A. N.A. 800-516-90 (2) N.A. N.A. 800-516-90 (2) 800-516-90 (2)

EXPANSION DEVICE N.A. N.A. N.A. N.A. N.A. T.E.V. N.A. N.A. T.E.V. T.E.V.

GENERAL

NUMBER OF REFRIGERANT CIRCUITS 1 1 1 1 2 2 2 2 2 2

REFRIGERANT CHARGE PER COMP., kg 33 39 45 50 33 33 39 45 47 48

SOUND PRESSURE LEVEL, dBA (3m./5m./10m.) 72.2/68.7/63.4 72.6/69.1/63.8 75.4/71.9/66.6 75.6/72.1/66.8 74.4/71/65.7 74.5/71/65.7 75.3/71.8/66.5 78.4/74.9/69.6 78.4/74.9/69.6 78.7/75.2/69.9

SHIPPING /OPERATING WEIGHTS (Aluminum coils), kg 1895/1944 2443/2501 2563/2621 2580/2638 3256/3398 3267/3398 4358/4488 4541/4655 4568/4682 5049/5211

SHIPPING /OPERATING WEIGHTS (Copper coils), kg 2019/2068 2635/2693 2843/2901 2858/2916 3575/3717 3589/3731 4667/4797 4988/5102 5014/5128 5435/5597

PHYSICAL DATA

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.

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COMPRESSOR

PART NUMBER 208/230V-3Ph-60Hz 800-683-22 (2) 800-683-22 (2) 800-683-16 (3) 800-683-16 (3) 800-683-16 (3) 800-683-22 (3) 800-683-22 (3) 800-683-16 (4) 800-683-19 (4)

380V-3Ph-60Hz 800-683-23 (2) 800-683-23 (2) 800-683-17 (3) 800-683-17 (3) 800-683-17 (3) 800-683-23 (3) 800-683-23 (3) 800-683-17 (4) 800-683-20 (4)

460V-3Ph-60Hz 800-683-24 (2) 800-683-24 (2) 800-683-18 (3) 800-683-18 (3) 800-683-18 (3) 800-683-24 (3) 800-683-24 (3) 800-683-18 (4) 800-683-21 (4)


OIL CHARGE PER COMPRESSOR, Liters 22 22 22 22 22 22 22 22 22 22

CAPACITY CONTROL (STEPLESS) % 100 - 25 100 - 16 100 - 12




REFRIGERANT R-134a



AIRCOOLED CONDENSER

CONDENSER Tube Dia.- Rows - Fins per inch 3/8–3–14 3/8–4–14 3/8–3–14 3/8–4–14 3/8–4–14 3/8–4–14 3/8–3–14 3/8–3–14

COIL Total face area, Sq. ft. 175 175 210 210 210 240 240 240 304 304

AIRFLOW, CFM 116570 108790 139884 133524 130548 140892 138276 138276 192048 192048


FAN MOTOR RPM @ 230/380/460-3-60 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100

COOLER

COOLER PART NUMBER 800-732-41 800-732-41 800-732-11 800-732-11 800-732-11 800-732-12 800-732-45 800-732-45 800-732-25 (2) 800-732-41(2)

SHELL DIAMETER, mm 406.4 406.4 406.4 406.4 406.4 406.4 406.4 406.4 323.8 406.4

TOTAL LENGTH, mm 2741 2741 2717 2717 2717 3217 3717 3717 2698 2741

WATER HOLDING VOLUME, Liters 161.7 161.7 184.4 184.4 184.4 222.2 256 256 227 323.4


ECONOMIZER

PART NUMBER N.A. 800-516-90 (2) N.A. 800-516-90 (2) 800-516-90 (3) N.A. 800-516-90 800-516-90 (3) N.A. N.A.

EXPANSION DEVICE N.A. T.E.V. N.A. T.E.V. T.E.V. N.A. T.E.V. T.E.V. N.A. N.A.

GENERAL


REFRIGERANT CHARGE PER COMP., kg 50 54 39 42/39 42 50/45 54/50 54 39 45

SOUND PRESSURE LEVEL, dBA (3m./5m./10m.) 78.9/75.4/70.1 78.9/75.4/70.1 77.1/73.6/68.3 77.1/73.6/68.3 77.1/73.6/68.3 80.3/76.8/71.5 80.4/76.9/71.6 80.4/76.9/71.6 81.4/77.9/72.6 81.4/77.9/72.6



PHYSICAL DATA


3/8–4–143/8–3–14

3/8–4–143/8–3–14

800-683-22 (2)800-683-19 (1)

800-683-23 (2)800-683-20 (1)

800-683-24 (2)800-683-21 (1)

10


COMPRESSOR

PART NUMBER 208/230V-3Ph-60Hz 800-683-22 (4) 800-683-16 (6) 800-683-19 (6) 800-683-19 (6) 800-683-22 (6) 800-683-22 (6)

380V-3Ph-60Hz 800-683-23 (4) 800-683-17 (6) 800-683-20 (6) 800-683-20 (6) 800-683-23 (6) 800-683-23 (6)

460V-3Ph-60Hz 800-683-24 (4) 800-683-18 (6) 800-683-21 (6) 800-683-21 (6) 800-683-24 (6) 800-683-24 (6)


OIL CHARGE PER COMPRESSOR, Liters 22 22 22/15 22 22 22 22 22 22 22

CAPACITY CONTROL (STEPLESS) % 100 - 12 100 - 8




REFRIGERANT R-134a



AIRCOOLED CONDENSER

CONDENSER Tube Dia.- Rows - Fins per inch 3/8–4–14 3/8–4–14 3/8–4–14 3/8–4–14 3/8–3–14 3/8–4–14 3/8–4–14 3/8–4–14

COIL Total face area, Sq. ft. 304 304 430.7 430.7 430.7 521.3 521.3 521.3 521.3 521.3

AIRFLOW, CFM 180560 180560 224046 220770 220770 281490 275110 269038 269038 269038


FAN MOTOR RPM @ 230/380/460-3-60 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100 1080/1080/1100

COOLER

COOLER PART NUMBER 800-732-41 (2) 800-732-41 (2) 800-732-73 (2) 800-732-54 (2) 800-732-11 (2) 800-732-11 (2) 800-732-11 (2) 800-732-65 (2) 800-732-65 (2) 800-732-65 (2)

SHELL DIAMETER, mm 406.4 406.4 406.4 406.4 406.4 406.4 406.4 457.2 457.2 457.2

TOTAL LENGTH, mm 2741 2741 2717 2717 2717 2717 2717 2762 2762 2762

WATER HOLDING VOLUME, Liters 323.4 323.4 323.4 323.4 368.8 368.8 368.8 504 504 504


ECONOMIZER

PART NUMBER N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. 800-516-90 (3) 800-516-90 (6)

EXPANSION DEVICE N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. T.E.V. T.E.V.

GENERAL


REFRIGERANT CHARGE PER COMP., kg 50/45 50 39/33 39 45 47 50/45 50/45 54/50 54

SOUND PRESSURE LEVEL, dBA (3m./5m./10m.) 81.5/78/72.7 81.6/78.1/72.8 79.4/75.8/70.6 79.4/75.9/70.6 82.9/79.3/74.1 83.1/79.5/74.3 83.2/79.7/74.4 83.2/79.7/74.4 83.3/79.8/74.5 83.3/79.8/74.5



PHYSICAL DATA


3/8–4–143/8–3–14

3/8–4–143/8–3–14

800-683-22 (2)800-683-19 (2)

800-683-23 (2)800-683-20 (2)

800-683-24 (2)800-683-21 (2)

800-683-16 (4)800-683-13 (2)

800-683-17 (4)800-683-14 (2)

800-683-18 (4)800-683-15 (2)

800-683-22 (3)800-683-19 (3)

800-683-23 (3)800-683-20 (3)

800-683-24 (3)800-683-21 (3)

800-683-22 (4)800-683-19 (2)

800-683-23 (4)800-683-20 (2)

800-683-24 (4)800-683-21 (2)

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 Packaged chiller for the following conditions:Required system capacity is 115 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 SELECTION

Entering the capacity performance data at given LCWT and ambient temperature.ASY120B chiller unit at sea level will produce 116.5 tons and 129.3 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 = 116.5x0.99x1.0 = 115.3 Tons, which then exceeds the requirements.So the selection is correct.

STEP-2: CHILLED WATER FLOW (GPM):

Water GPM = Required capacity (Tons) x 24

= 115 x 24

= 276 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-550/590

Referring to pressure drop chart (page # 23), pressure drop at 276 GPM = 17 ft. of water for selected model.

NOTE: The total flow rate should be divided by 2 for models ASY250B - ASY500B to find out the total pressure drop.

STEP-3: ELECTRICAL

Refer to electrical data at 380V-3Ph-60Hz, the main power wire size for ASY120B is to be sized for a minimum circuitampacity (MCA) of 311 Amps and maximum over current protection (MOCP) of 437 Amps.

STEP-4: CHILLED WATER PUMP SELECTION

For 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 CORRECTION

Refer 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

TABLE - 3CHILLED WATER TEMPERATURE RISE (0F)

CO

RR

EC

TIO

N F

AC

TO

R (

0 F)

0

-0.2

-0.45 10

+0.4

+0.2

+0.6

15 20

11

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 Packaged chiller for the following conditions:Required system capacity is 390 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 SELECTION

Entering the capacity performance data at given LCWT and ambient temperature.ASY120B chiller unit at sea level will produce 407.9 kW and 129.1 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 = 407.9x0.99X1.0 = 403.8 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

= 390 x 0.239

= 15.5 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 # 23), pressure drop at 15.5 LPS = 40.3 kPa for selected model.

NOTE: The total flow rate should be divided by 2 for models ASY250B - ASY500B to find out the total pressure drop.

STEP-3: ELECTRICAL

Refer to electrical data at 380V-3Ph-60Hz, the main power wire size for ASY120B is to be sized for a minimum circuitampacity (MCA) of 311 Amps and maximum over current protection (MOCP) of 437 Amps.

STEP-4: CHILLED WATER PUMP SELECTION

For 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 CORRECTION

Refer 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-550/590

TABLE - 1

TABLE - 3

CHILLED WATER TEMPERATURE RISE (0C)

CO

RR

EC

TIO

N F

AC

TO

R (

0 C)

+0.33

+0.22

+0.11

-0.11

-0.2254 6 7 8

0

109

12

13

LEA

VIN

GC

HIL

LED

WAT

ER

TE

MP.

(LC

WT)

PE

RF

OR

MA

NC

E D

ATA

(En

glis

h u

nits

)

UN

ITS

IZE

950 F

AM

BIE

NT

TE

MP

ER

AT

UR

E10

50 F A

MB

IEN

T T

EM

PE

RA

TU

RE

1150 F

AM

BIE

NT

TE

MP

ER

AT

UR

E12

50 F A

MB

IEN

T T

EM

PE

RA

TU

RE

1300 F

AM

BIE

NT

TE

MP

ER

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E

CA

P.(T

on

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ND

:kW

-C

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r pow

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r.3.

Rat

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1.61

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1.45

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AS

Y 1

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415.

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2.46

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14.5

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459.

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AS

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490.

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1.28

15.3

AS

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531.

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AS

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595.

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2.46

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541.

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636.

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AS

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679.

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570.

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1.65

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763.

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1179

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1685

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Y 0

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347.

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362.

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AS

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425.

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468.

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497.

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547.

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159.

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100

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4.7

119.

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9415

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176.

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5512

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82.

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3.1

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6314

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130

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6315

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140

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8.8

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6819

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5.7

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160

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8.8

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383.

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6.6

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Qty

.

CO

MP.

WIN

D-

ING

Qty

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TAC

BQ

ty.

MTA

CB

NO

TE

S:

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

perf

orm

ance

& te

rms

of w

arra

nty.

2.M

ain

pow

er m

ust b

e su

pplie

d fr

om a

sin

gle

field

sup

plie

d an

d m

ount

ed fu

sed

disc

onne

cts,

usi

ng d

ual e

lem

ent t

ime

dela

y fu

se o

r ci

rcui

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

ttw

o or

mor

e pa

ralle

l fie

ld w

ires

per

pole

pha

se.

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he c

ompr

esso

r cr

ankc

ase

heat

ers

mus

t be

ener

gize

d fo

r 12

hou

rs b

efor

e th

e un

it is

initi

ally

sta

rted

or

afte

r a

prol

onge

d po

wer

dis

conn

ectio

n.5.

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er c

ompr

esso

r typ

e 1

are

the

big

com

pres

sors

or c

ompr

esso

r with

eco

nom

izer

, and

type

2 a

re th

e sm

all c

ompr

esso

rs 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

requ

ired

on 3

80V

-3P

h-60

Hz

pow

er s

uppl

y on

ly.

9.T

he ±

10%

vol

tage

var

iatio

n fr

om th

e no

min

al is

allo

wed

for a

sho

rt ti

me

only

, not

per

man

ent.

10.R

LA v

alue

s ar

e ba

sed

on n

omin

al c

ondi

tions

.

LE

GE

ND

:M

CA

-M

inim

um C

ircui

t Am

paci

ty p

er N

EC

430

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axim

um O

ver C

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nt P

rote

ctio

nR

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ed L

oad

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psLR

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Lock

ed R

otor

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psC

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Circ

uit B

reak

erM

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t Trip

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l Loa

d A

mps

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an C

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t Am

psP

W-

Par

t Win

ding

Sta

rt C

ompr

esso

rkW

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ilo W

att

20

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AN

KC

ASE

HEA

TER

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lW

atts

Volts

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lA

mps

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(Qty

.)FC

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tal

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ach)

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ty.

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ach)

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TE

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usto

mer

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peci

fy th

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omin

al p

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ply

avai

labl

e at

site

so

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al c

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atel

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rms

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pow

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gle

field

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plie

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ount

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sed

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ld w

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se.

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he c

ompr

esso

r cr

ankc

ase

heat

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t be

ener

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d fo

r 12

hou

rs b

efor

e th

e un

it is

initi

ally

sta

rted

or

afte

r a

prol

onge

d po

wer

dis

conn

ectio

n.5.

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er c

ompr

esso

r typ

e 1

are

the

big

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pres

sors

or c

ompr

esso

r with

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nom

izer

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type

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re th

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all c

ompr

esso

rs o

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pres

sor

with

out E

cono

miz

er.

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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

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ltage

s ar

e sh

own

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ted

data

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ve.

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eutr

al li

ne

requ

ired

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80V

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Hz

pow

er s

uppl

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ly.

9.T

he ±

10%

vol

tage

var

iatio

n fr

om th

e no

min

al is

allo

wed

for a

sho

rt ti

me

only

, not

per

man

ent.

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LA v

alue

s ar

e ba

sed

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al c

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GE

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Lock

ed R

otor

Am

psC

B-

Circ

uit B

reak

erM

TA-

Mus

t Trip

Am

psFL

A-

Ful

l Loa

d A

mps

FCA

-F

an C

ircui

t Am

psP

W-

Par

t Win

ding

Sta

rt C

ompr

esso

rkW

-K

ilo W

att

22

WATER SIDE PRESSURE DROP

CURVE No. Maximum GPM MODEL No.ASY050BASY060BASY070BASY080BASY090BASY100BASY120BASY130BASY140BASY150BASY160BASY170BASY180BASY190BASY200B

122233345666777

138170192214265271325356372411437455498522534

Minimum GPM8298

108124164184203222251267272315301343365

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. If the chiller has 2 evaporators, then the total water flow must be divided by 2 while applying the above curves (applicable for models

ASY250B - ASY500B.

CURVE No. Maximum GPM MODEL No.ASY215BASY230BASY240BASY250BASY270BASY295BASY310BASY330BASY350BASY375BASY400BASY420BASY450BASY475BASY500B

777466666777888

593620633708768826866925971

104810951164124212971315

Minimum GPM375412447425450502537572601634650710779866920

PR

ES

SU

RE

DR

OP

(F

T. O

F W

AT

ER

)1

10 20

23

48

65

79

1060

3020

5040

7010

090

8020

0

FLOW RATE - GPM604030 50 9070 80 100 300200 400 500 600 15001000800700 900 1200

1 2

8

3 4 5 6 7

RECOMMENDED INSTALLATIONLEAVING/RETURN WATER TEMPERATURE SENSOR & WATER FLOW SWITCH

23

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.

OUTININ OUT

CHILLER # 1

CONTROL PANEL

COOLER 1 COOLER 2

CHILLER # 2

CHILLER # n

LEAVINGWATER

RETURNWATER

LWTLEAVING WATER SENSOR(FIELD INSTALLATION]

FLS2(FIELD INSTALLATION]


RWTRETURN WATER SENSOR(FIELD INSTALLATION]

FS

FS

LWT

RWT

> or <FS

BULB WELL FOR THE LWT/RWT (ZAC NOT SUPPLIED)

LEAVING WATER SENSOR (ZAC SUPPLIED - LOOSE PART)

RETURN WATER SENSOR (ZAC SUPPLIED - LOOSE PART)

WATER DIRECTION

WATER FLOW SWITCH / FLS# (ZAC SUPPLIED AS OPTIONAL)

HARD WIRE TO THE UNIT CONTROLLER (ZAC NOT SUPPLIED)

WATER PIPE LINE (CONTRACTOR SCOPE)

LEGEND :

NOTE :1. CHECK WITH THE ENGINEERING DEPARTMENT FOR THE FULL DETAILS AND ACCURATE DRAWING.

2.HARDWIRE FROM FLOW SWITCH AND LWT/RWT SHOULD BE ROUTED INDIVIDUALLY AND DIRECT TO THE UNIT CONTROLLER.REFER TO THE ACTUAL UNIT WIRING DIAGRAM FOR DETAILS.

CONTROL PANEL

FS





FS

COOLER 2COOLER 1

CONTROL PANEL

COOLER 2

FS

COOLER 1





FS

OUTINOUTIN

OUTINOUTIN

24

DIMENSIONSASY050B

NOTE: ALL DIMENSIONS ARE IN MILLIMETERS, UNLESS OTHERWISE SPECIFIED.

ASY060B, ASY070B & ASY080BDIMENSIONS

MODEL A

ASY060B 100

ASY070B - ASY080B 275

25

ASY090B & ASY100B

ASY120B, ASY130B & ASY140B

DIMENSIONS


26

ASY150B, ASY160B & ASY170B

ASY180B, ASY190B, ASY200B, ASY215B, ASY230B & ASY240B

DIMENSIONS


MODEL A B C

ASY180B - ASY200B 2075 2200 1650

ASY215B 2185 2700 1115

ASY230B - ASY240B 2185 3200 800

DIMENSIONS

27

DIM

EN

SIO

NS

AS

Y25

0B, A

SY

270B

, AS

Y29

5B &

AS

Y31

0B

NO

TE

: ALL

DIM

EN

SIO

NS

AR

E IN

MIL

LIM

ET

ER

S, U

NLE

SS

OT

HE

RW

ISE

SP

EC

IFIE

D.

MO

DE

LA

BC

AS

Y25

0B42

218

9022

50

AS

Y27

0B -

AS

Y31

0B48

319

4022

00

DIM

EN

SIO

NS

28

DIM

EN

SIO

NS

AS

Y33

0B, A

SY

350B

& A

SY

375B

NO

TE

: ALL

DIM

EN

SIO

NS

AR

E IN

MIL

LIM

ET

ER

S, U

NLE

SS

OT

HE

RW

ISE

SP

EC

IFIE

D.

29

DIM

EN

SIO

NS

AS

Y40

0B, A

SY

420B

, AS

Y45

0B, A

SY

475B

& A

SY

500B

NO

TE

: ALL

DIM

EN

SIO

NS

AR

E IN

MIL

LIM

ET

ER

S, U

NLE

SS

OT

HE

RW

ISE

SP

EC

IFIE

D.

MO

DE

LA

BC

AS

Y40

0B -

AS

Y42

0B22

0034

2048

3

AS

Y45

0B -

AS

Y50

0B21

3034

7451

0

DIM

EN

SIO

NS

DIP

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

24A

TOUT

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

OPEN

ON

OFF

OPEN

1

OFF

ON

3

OFF

ON

2

OFF

4

OFF

CLOSED

CLOSED

6FM

36F

35F

36B

35B

37B

37H

36H

35H

8FM FM

2

FMC7

CB20

L1L

FMC8

L3L

L2L

37F

LLS2

FMC1

FMC4

FMC2FMC3

FMC5

16

SL.I1

UL2-2

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

FLS

HPS2

SSPS2

HPS1

1A

SSPS1

CWP*

OLR4-1

1

OLR2-1

10

1

11B

2H

11

2G

9B

OLR3-1OLR1-1 11A

UVR1

1COMP

T1C

1BATB

ETB/LUG

OLR1

NTBT

3A

T1A

T2A

CC1

L2

L3

F1 5A

T2B

OLR3T

2CT

3COLR2

T1B

CC3 CC2

T3D

T1D T2D

T3B

2COMP

FMC3

CB18

37D

36D

35D

37E

36E

35E

37A

3A

T1

T1

3B

1HTR

2HTR

SSPS1

SSPS2

1FM5

COMP2 SSPS

COMP1 SSPST2

T2

ATB2

4FM

L1J

L2J

FMC4

L3J

FMC5

CB19

HVTB

CB1 CB3L1

A

L2C

L3C

L1C

L3A

L2A

CB4CB2

L1D

L3B

L2B

L1B

L3D

L2D

CBA1-1 22A CBA3-1 23A

CBA2-1 22B CBA4-1 23B

CONNECTION

OLR4

CC4

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

UL2-1

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

TRANS2

EEVB

X1 RED

BLK

WHT

GRN

X1

X1

X1

TO ATB

1230VAC

2

1EEV

TD1

TU1

FM

36A

35A

36G

35G

36C

37C

37G

35C

TO NTB

3FM

CONTROL VOLTAGE

230V-1PH

N

CCA1-1

CCA2-1

7FM

FMC2

L1I

L2I

L3I

MENU

T3S

T4S

USER INTERFACE BOARD

*On/Off

SUCTION TEMP SENSOR COMP1

T2S

T1S

REMOTE MONITORING

INTERFACE(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

S1

L2K

FMC6

L3K

L1K

COMP1 OILHTR

COMP2 OILHTR

24V

12V

COMP1 CONTACTOR

OB1 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

S1TL1

TD1

(DIP) OFF

CLOSED

1ON

OPEN2

OFF3 4

OFF

JUMPER & DIP SWITCH SELECTION ON MAIN BOARD

JU2TU1

JU1

CLOSEDCLOSED

CLOSED

TOUT=10°C TIN=15°CCOOLING 75%

SET

*

*

ESC

**SEE ALSO DISCHARGE TEMPERATURE

SEE ALSO UNLOADERTIMER DETAILS

112TK3

TK7 116110114

113117111115

TK1

TK5

TK2

TK6

TK8

TK4

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.

30

REFER TO UNITNAMEPLATE FORPOWER SUPPLY

N (SEE NOTE -7)

TDS2-1SEC

TDS1-1SEC61A

61B

62A

62B

2

CC3

CC4

2

2

2

2

2

1

12B

61BCC2A-2

CC2

CC4

15

CB1A-1

CB2A-1

LPS CONNECTION (OPTIONAL)

1

1

LPS1

LPS2

63A

63B

CONTROL PANEL

FAN2

FAN1

CONTROL PANEL

COMP1

2HEATER7O7C R71

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)

GATEWAY

TO

CC3

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

CC1A-2

1

12A

61A

CC1

MAIN BOARD

EEVB

X8T2

DT2C2 D2

T1X7

USE FOR OB1 EEVB ONLY

DT1C1 D1

256

SET POINT = 180 SECABOVE CONNECTION IS ONLY FOR ZAC P/N 80062300 ONLY.

ON

TIMER 11

3B

3A

3BB

81 2 4 3216 64 128

TIMER 21CCAT21-1

CCAT11-1

AR11-1

4BB

UL3-2

4AA

3AAUL3-1

UL3-2

512

UL3-1

AR21

AR11

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

TD2

TL2

CLOSED

OPEN

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

MB1

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

CB4A-1

CB3A-122A

22BD7(MB)

D2(MB)

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

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

UNLOADER TIMER DETAILS

2

AR21-1

** DISCHARGE TEMPERATURE SENSOR CONNECTION

NOTES

1. 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)

31

LEGEND

CBA THERMAL MAGNETIC CIRCUIT BREAKER AUXILIARY

COMP COMPRESSOR

CC COMPRESSOR CONTACTOR

CCA COMPRESSOR CONTACTOR AUXILIARY

CWP CHILLED WATER PUMP

ETB EARTH TERMINAL BLOCK

FLS FLOW SWITCH

FM FAN MOTOR

FMC FAN MOTOR CONTACTOR

F FUSE

HPS HIGH PRESSURE SWITCH

HGBS HOT GAS BYPASS SOLENOID

HVTB HIGH VOLTAGE TERMINAL BLOCK

JP JUMPER

LPS LOW PRESSURE SWITCH

MB MASTER BOARD

NTB NEUTRAL TERMINAL BLOCK

OLR OVER LOAD RELAY

PT PRESSURE TRANSDUCER

P POTENTIAL BAND

SLE ECONOMIZER SOLENOID

SB SLAVE BOARD

S1 CONTROL SWITCH

SSPS SOLID STATE PROTECTION SYSTEM

TK FAN THERMAL CONTACTTMCB THERMAL MAGNETIC CIRCUIT BREAKERTRANS TRANSFORMER

TDS TIME DELAY SWITCH

TS TEMPERATURE SENSORUL UNLOADER

UVM 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

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.

32

TROUBLESHOOTING GUIDE1) No LED display lit or erratic display behavior

a) Check serial cable integrity.b) Check serial cable connections on both the User Interface Board and the Main Board.c) Check correct and tight insertion of jumpers JU1 and JU2 on the Main Board.d) Check correct and tight insertion of jumpers TU1 and TD1 on the User Interface Board and on the last board of the

network.

2) Controller does not respond to keypada) Check serial cable integrity.b) Check serial cable connections on both the User Interface Board and the Main Board.c) Check correct and tight insertion of jumpers TU1 and TD1 on the User Interface Board, main and/or auxiliary

board.d) Check dip switches and integrity on the User Interface Board.

3) Several analog values reading incorrectlya) Check correct and tight connection of the probes to the board.b) Check the probe cable: test for short-circuit.c) The pressure transducer probe is a 4-20mA transmitter check the polarity of the connection on the Board.d) Check if the power supply voltage is into the specified limits: 24Vac +/- 10%.e) The temperature probe is a PTC sensor disconnect it from the board and measure its resistance that is 1000 ohm

at 250C or 1200 ohm at 500C.

4) Digital input reading incorrectlya) Check if the auxiliary 220 Vac voltage is present in the electrical box.b) Check if the AC input on the Board is correctly connected to one of the 220 Vac terminals in the electrical box.c) Check if A1/A14 inputs are correctly connected with respect to the cabling diagram of the electrical box.

5) No LCD display lit or erratic display behaviora) Check serial cable integrity.b) Check serial cable connections on both the User Interface Board and the Main Board.c) Check correct and tight insertion of jumpers JU1 and JU2 on the Main Board.d) Check correct and tight insertion of jumpers TU1 and TD1 on the User Interface Board, main and/or auxiliary

board.e) Adjust display intensity by rotating trimmer RV1 counter-clockwise (from the back side of the board).

6) No LED H1 blinking light on NG3 Boarda) Check power supply cable an connection.b) Check if the power supply voltage is into the specified limits: 24Vac +/- 10%.c) Check for fuse F1, replace with 1AT/250V if blown.

7) No display of leds on User Interface Boarda) Check serial cable integrity.b) Check serial cable connections on both the User Interface Board and the Main Board.c) Check correct and tight insertion of jumpers JU1 and JU2 on the Main Board.d) Check correct and tight insertion of jumpers TU1 and TD1 on the User Interface Board, main and/or auxiliary

board.

33

8) Auxilliary board not responding to commandsa) Check if LED H1 on Auxilliary board is blinking , if not go to point (6).b) Check serial cable integrity.c) Check serial cable connections on both the Main and the Auxilliary boards.d) Check that jumpers JU1 and JU2 on the Auxilliary boards are not installed.e) Check correct and tight insertion of jumpers TU1 and TD1 on the User Interface Board, main and/or auxiliary

board.

9) Analog Outputs not respondinga) Check Analog Output cables integrity (for short-circuit).b) Check Analog Output cabling and connections.c) Check if the power supply voltage is into the specified limits: 24VAC +/- 10%.d) Check the fuse F1, replace with 1AT/250V if blown.

10) Digital Outputs not respondinga) Check Digital Output cables integrity (no short-circuit, no open-circuit).b) Check digits Output cabling and connections.c) Check if the power supply voltage is into the specified limits: 24VAC +/- 10%.d) Check the fuse F1, replace with 1AT/250V if blown.

11) Serial Communication with Remote Monitoring Control not Functioninga) Check the serial cable connected on plug-in board IS-485 mounted on the Main Board.b) Check if the plug-in board is correctly mounted on the Main Board.c) Check if jumpers X5 and X6 on the plug-in board IS-485 are correctly installed.d) Check if jumpers X17 and X18 on the GATEWAY board are correctly installed.

34

APPLICATION GUIDELINESINTRODUCTIONThese guidelines should be considered when designing systems and their installation utilizing Zamil ASY series liquidchillers. Stable operation, performance and reliability of units is often dependent upon proper compliance with theserecommendations. When any application varies from these guidelines, it should be referred with Zamil Air Conditionersfor 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.

35

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).

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

36

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:

37

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.

CHWS

CHWR

Load Load

3-WayValve

3-WayValve

Constant Speed Pump

Chiller

38

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.

2-Way Valve

CHWS

Bypass ControlValve

P

Bypass Line

SystemController

FM-1

FM

-2

Load

2-Way Valve

Chiller

Variable Speed Pump

CHWR

Load

39

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.

Flow Sensor

CHWR

P

2-Way Valve

Load

CHWSA

B

Variable Speed Secondary Pump

SystemController

Load

2-Way Valve

Constant SpeedPrimary Pump

Chiller

40

• 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.Carefully select the vibration isolators’ models / configuration based on the respective point loads and place eachmount in its correct position following the Load Distribution Data and Mounting Drawings provided in this Catalog.Refer to the Schematic Mounting Layout drawings provided in the IOM manual of these chillers for further details in thisregard.

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.

41

• 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.

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

42

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 ASY100 operating with a design water flow rate of 205 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.

TANK SCHEMATIC

43

• 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.

44

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: ASY050B - ASY240B

45



WALL

INSTALLATION CLEARANCE

FIGURE - 2CORNER WALL

FIGURE - 1STRAIGHT WALL

MODEL NUMBER A B

ASY050B - ASY080B 2500 2000

ASY090B - ASY310B 3000 2000

ASY330B - ASY500B 3500 2500

46

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.

MOUNTING LOCATION




MODEL A

ASY150B 1586

ASY160B 1586

ASY170B 1586

ASY180B 2094

ASY190B 2094

ASY200B 2094ASY215B 2094ASY230B 2094ASY240B 2094

NOTE: All dimensions are in mm.

MODEL A

ASY090B 1249

ASY100B 1249

ASY120B 1858

ASY130B 1858

ASY140B 1858

47



48

R3

R1

R4

R2

R6

R1

LOAD DISTRIBUTION, kg. (ALUMINUM CONDENSER COIL)MODEL No. R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14

ASY050B 521 495 477 451 - - - - - - - - - -

ASY060B 681 642 602 576 - - - - - - - - - -

ASY070B 712 673 631 605 - - - - - - - - - -

ASY080B 715 679 635 609 - - - - - - - - - -

ASY090B 632 600 585 553 522 506 - - - - - - - -

ASY100B 635 603 587 554 523 507 - - - - - - - -

ASY120B 853 821 805 696 664 649 - - - - - - - -

ASY130B 880 849 833 724 692 677 - - - - - - - -

ASY140B 886 855 839 727 695 680 - - - - - - - -

ASY150B 729 702 693 684 628 601 592 582 - - - - - -

ASY160B 730 703 694 684 629 601 592 583 - - - - - -

ASY170B 750 722 713 704 646 618 609 600 - - - - - -

ASY180B 973 939 927 916 805 771 759 748 - - - - - -

ASY190B 989 955 943 932 819 785 773 762 - - - - - -

ASY200B 997 963 952 940 826 791 780 769 - - - - - -

ASY215B 1024 989 978 966 859 825 813 802 - - - - - -

ASY230B 1045 1011 999 988 888 854 842 831 - - - - - -

ASY240B 1050 1016 1005 993 891 856 845 833 - - - - - -

ASY250B 1045 1010 993 987 982 862 827 810 805 799 - - - -

ASY270B 1084 1049 1032 1026 1021 925 891 874 868 862 - - - -

ASY295B 1108 1074 1056 1051 1045 948 913 896 890 885 - - - -

ASY310B 1112 1078 1061 1055 1049 950 916 898 893 887 - - - -

ASY330B 992 973 964 955 946 941 937 823 804 795 786 777 772 768

ASY350B 1071 1052 1043 1034 1025 1020 1016 867 848 839 830 821 816 812

ASY375B 1089 1070 1061 1052 1043 1038 1034 892 874 864 855 846 841 837

ASY400B 1109 1089 1079 1069 1059 1054 1049 911 891 881 871 861 856 851

ASY420B 1124 1104 1094 1084 1074 1069 1064 925 905 895 885 875 870 865

ASY450B 1164 1144 1134 1124 1114 1109 1104 989 969 959 949 939 934 929

ASY475B 1171 1151 1141 1131 1121 1116 1111 993 973 963 953 943 938 933

ASY500B 1176 1156 1146 1136 1126 1121 1116 995 975 965 955 945 940 935

49

R3

R1

R4

R2

R6

R1

LOAD DISTRIBUTION, kg. (COPPER CONDENSER COIL)MODEL No. R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14

ASY050B 552 526 508 482 - - - - - - - - - -

ASY060B 729 690 650 624 - - - - - - - - - -

ASY070B 782 743 701 675 - - - - - - - - - -

ASY080B 785 748 705 678 - - - - - - - - - -

ASY090B 685 654 638 606 575 559 - - - - - - - -

ASY100B 688 657 641 608 576 561 - - - - - - - -

ASY120B 904 873 857 747 716 700 - - - - - - - -

ASY130B 955 923 908 798 767 751 - - - - - - - -

ASY140B 961 929 913 801 770 754 - - - - - - - -

ASY150B 778 750 741 732 676 649 640 631 - - - - - -

ASY160B 778 751 742 732 677 649 640 631 - - - - - -

ASY170B 820 792 783 774 715 688 679 670 - - - - - -

ASY180B 1031 996 985 973 863 828 817 805 - - - - - -

ASY190B 1064 1030 1018 1007 894 860 848 837 - - - - - -

ASY200B 1081 1047 1035 1024 910 875 864 852 - - - - - -

ASY215B 1109 1075 1063 1052 945 911 899 888 - - - - - -

ASY230B 1141 1107 1095 1084 984 949 938 926 - - - - - -

ASY240B 1146 1112 1100 1089 986 952 940 929 - - - - - -

ASY250B 1112 1077 1060 1054 1049 929 894 877 871 866 - - - -

ASY270B 1150 1116 1099 1093 1087 992 958 941 935 929 - - - -

ASY295B 1205 1171 1153 1148 1142 1045 1010 993 987 982 - - - -

ASY310B 1209 1175 1158 1152 1146 1047 1013 995 990 984 - - - -

ASY330B 1078 1060 1051 1042 1033 1028 1023 909 891 882 873 863 859 854

ASY350B 1169 1150 1141 1132 1123 1118 1114 965 946 937 928 919 914 910

ASY375B 1187 1169 1159 1150 1141 1137 1132 990 972 962 953 944 940 935

ASY400B 1191 1171 1161 1151 1141 1136 1131 993 973 963 953 943 938 933

ASY420B 1225 1205 1195 1185 1175 1170 1165 1026 1006 996 986 976 971 966

ASY450B 1282 1262 1252 1242 1232 1227 1222 1108 1088 1078 1068 1058 1053 1048

ASY475B 1290 1270 1260 1250 1240 1235 1230 1111 1091 1081 1071 1061 1056 1051

ASY500B 1294 1274 1264 1254 1244 1239 1234 1114 1094 1084 1074 1064 1059 1054

PL-AP-ASY-10-2M-E

Documents

Screw Compressor ASY (R-134) series.pdf