GENERAL ELECTRIC AIR COOLED SCREW WATER...

GENERAL ELECTRIC

AIR COOLEDSCREW WATER CHILLERSR-134a

AASC Series AASC055B thru AASC445B 55 TR thru 445 TR | | | 194 kW thru 1565 kW

GE_AASC_Series.indd 1 3/26/12 5:20 PM

1

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

Unit features, standard specifi cations & options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Physical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11

Selection procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-13

Ethylene glycol solution capacity correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Performance data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-20

Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

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

Unit dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-28

Typical schematic wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29-31

Microprocessor controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32-34

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

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

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

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

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

Continuing research results in steady improvements. Therefore, these specifi cations are subject to change without notice

CONTENTS


2

MODEL DECODING & PRODUCT INFORMATION


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3

FEATURESThese AASC air cooled screw water chillers off er the ultimate combination of energy saving design, superior engineering features and fl exibility of application as required by today’s market.

Wide size range for every application need.

Equipped with the advanced controller from Microprocessor Control System (MCS) as standard. This controller monitors both analog and digital inputs in order to achieve precise control and full protective functions of the air cooled water chiller. It has the complete hardware and software necessary to control the chiller and to ensure the highest energy efficiency 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 expanded into a steel tubular sheets which offer efficient water flow as well as heat transfer design that results in optimal unit performance.

High Energy Efficiency Ratio (EER) semi-hermetic compact twin screw compressors.

Single point power connection to minimize job site installation cost and time.

Complete factory wired control panel for all compressor motor starters, fan motor starters and microprocessor controller that provides all necessary operating and full safety control.

Compressor motors are with part winding start or star delta start.

Low noise condenser fans, direct drive at 940 RPM with rolled form venturi design to eliminate short circuiting of airflow.

All fans are high quality aluminum propeller type with aerodynamic design, top discharge, provided with protective grille 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..

STANDARD SPECIFICATIONSCABINET

All units are of heavy gauge (G-90) galvanized steel. The steel sheet panels are zinc coated and galvanized by hot dip process of lock-forming quality conforming to ASTM A 653 commercial weight G-90 followed by air dry paint or backed on electrostatic polyester dry powder coat.

CAPACITY CONTROL

These chillers are equipped with stepless capacity control system as standard for very accurate response to load requirements and best part load effi ciency. Each compressor is equipped with a slider controller that enables to modulate capacity between 25% to 100%, thus giving a broad range to control total chiller capacity between 10% to 100% on an average. This system has following advantages:

1. Infinite capacity modulation that allows the compressor capacity to exactly match the cooling load.

2. Reduces compressor cycling that leads to better operational reliability.

3. Reduces operating cost.

4. For units with Hot gas bypass (optional): The unit modulates to approximately 50% of its compressor lowest unloaded capacity.

UNIT FEATURES, STANDARD SPECIFICATIONS & OPTIONS


4


SEMI-HERMETIC COMPACT TWIN SCREW COMPRESSORS

High capacity and high efficiency due to its perfect profile form ratio 5:6.

Double-walled rotor housing with high strength inner ribs which is extremely stable and results in additional sound attenuation.

Suction gas cooled semi-hermetic compressor with suction filter.

Universal application, with or without economizer.

Rain- tight terminal box.

Long life bearings and high reliability.

Optimized oil management. Built in directly flanged on three stage oil separator, low pressure drop demister to ensure minimal refrigerant dilution in the oil and maintain high oil viscosity.

Large volume motor for part winding or direct start with integrated PTC sensor in each winding.

Compressors are provided with intelligent electronics including thermal motor temperature monitoring phase sequence monitoring, manual reset lock-out and discharge temperature protection by PTCs sensors.

Compressors with slider control valve for Infinite capacity control.

Compressors are equipped with a discharge shut off valve, discharge check valve, suction shut of valve, suction filter, rubber mounting pads, PTC temperature sensors, economizer port, oil heater, oil filter, oil drain valve, oil sight glass, liquid injection port, oil level switch and built in safety pressure relief valve.


CONDENSER COILSW-confi guration condenser coils are corrugated fi n and tube type, constructed of seamless 3/8” dia. & 0.011” (0.27 mm)thick inner grooved copper tubes, mechanically bonded to aluminum fi ns for maximum heat transfer effi ciency.

There should advice on this feature, as a standard on aluminum fins, ZAC provides Coil ResisTec Coating, which is a single component of aluminum impregnated coating applied on the fins of heat exchanging coils. The product has been designed for Middle East climate conditions. 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 rejuvenation purposes.

The fins have full self spacing collars which completely cover each tube. The staggered tube design improves the thermal effiency. End plates support sheets are 14 gauge galvanized steel, formed to provide structural strenght. 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 is provided with tubes that are made of internally grooved copper tubes expanded into a heavy steel tubular sheets. The chiller cooler & baffl es are constructed of steel and brass respectively. These coolers are insulated with heavy closed cellular foam insulation (3/4” thick). All chiller coolers are fi tted with vent, drain connection and victaulic water pipe connection as standard.

5


CONTROL PANEL

The 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 identifi ed with 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 conditions for a long period.

CONDENSER FANS

Condenser fans, the impeller and motors are so constructed to form an integral unit. All fan motors shall be three phase with class ‘’F’’ winding insulation and ball bearings for high ambient application. These fan motors are of totally enclosed air over type (TEAO) with inherent thermal protection of automatic reset type.

MICROPROCESSOR CONTROLLER

The AASC chillers are equipped with the advanced controller from Microprocessor Control System (MCS) as standard. The MCS works as computer, decisions are made based upon the set point, timers and sensor inputs that ensure the most effi cient functioning of the chiller package.

This durable microprocessor controller is primary made for chiller package application. It can stand for long operation under high ambient conditions. It is fully designed to automatically protect the system that is being controlled and eliminates the needs for manual intervention. The controller provides fl exibility on set points and control options that can be selected prior to commissioning on a system or when the unit is live and functioning. It is also provided with a simple to use push button that allows the user to access the unit operating conditions, control set points and alarms history.

Display, alarms and other interfaces are accomplished using most common terms in a clear and simple language that can be easily understood. Characters in white on a blue background are viewed at 2.8” diagonal viewing area with 128 x 64 dot pixel STN monochrome graphics LCD.

EDIS TNAREGIRFEREDIS RETAW

DESIGN PRESSURE,(BAR/PSIG)

TEST PRESSURE,(BAR/PSIG)

DESIGN PRESSURE,(BAR/PSIG)

TEST PRESSURE,(BAR/PSIG)

SHELL & TUBEHEAT

EXCHANGER(COOLER)

016/5.14624/92533/8.22532/61ST D

10/147 11.3/165 15.5/22 8 23.3/342ASME (option)


6


STANDARD CONTROL & SAFETY DEVICES MICROPROCESSOR 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 part winding or star delta starter is operated by the control circuit and provides power to the compressor motors. These devices are rated to safely handle both RLA and LRA of motors.

CRANKCASE HEATERS: Each compressor has immersion type crankcase heater. The compressor crankcase heater is always on when the compressors are de-energized. This protect the system against refrigerant migration, oil dilution and potential compressor failure.

HIGH PRESSURE SWITCH: This switch provides an additional safety protection in the case of excessive discharge pressure.

STANDARD ACCESSORIES UNIT 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 trip on safety devices.

ELECTRONIC EXPANSION VALVE: Electronic expansion valve is used to regulate the refrigerant fl ow to the water cooler and maintain a constant superheat and load optimization.

FILTER DRIER (REPLACEABLE CORE TYPE): Refrigerant circuits are kept free of harmful moisture, sludge, acids and oil contaminating particles by the fi lter drier.

SIGHT GLASS: A moisture indicating sight glass installed in the liquid line. An easy-to-read color indicator shows moisture 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 accumulating in the water cooler during the off cycle.

UNDER VOLTAGE AND PHASE PROTECTION: Protects against low incoming voltage as well as single 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 or automatically), the breaker opens the power supply to the compressor and control circuit through auxiliary contacts.

OPTIONSHOT 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 compressor on and off , ensuring narrow temperature swing and lengthen the life span of the compressor.

WATER FLOW SWITCH: Paddle type fi eld adjustable fl ow switch for water cooler circuits. Interlock into unit safety circuits so that the unit will remain off until water fl ow is determine.

UNIT MOUNT SPRING ISOLATORS: This housed spring assemblies have a neoprene friction pad on the bottom to prevent 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 with door interlock.


7


CONDENSER COIL GUARD: Protects the condenser coil from physical damage.

COMPRESSOR/COOLER GUARD: Protects the compressor and cooler 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.

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

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

BMS: BACNET, MODBUS, Johnson control and LON work.

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- treatmentand layer build up. Please check ResisTec product information sheets, the heat exchangers can not be coated using thistype. The coating can be applied at the Zamil Air Conditioners factory as well as in the field for maintenance or rejuvenationpurposes.


8

PHYSICAL DATA

UNIT SIZE AASC055B AASC060B AASC070B AASC075B AASC090B AASC100B

COMPRESSOR

44-537-00863-537-00802-537-008 21-537-008 40-537-008 40-537-008REBMUN TRAP

221111SROSSERPMOC FO REBMUN

OIL CHARGE PER COMPRESSOR, Liters 16 16 16 18 14 16

% )SSELPETS( LORTNOC YTICAPAC 52-001 05-001

CINORTCELE)LANRETNI( NOITCETORP DAOLREVO ROTOM

OIL LUBRICATION INJECTION

REFRIGERANT R-134a

EVLAV NOISNAPXE CINORTCELEECIVED EVLAV NOISNAPXE

CONTROL VOLTAGE 220V-1Ph-50Hz

CONDENSERCONDENSER COIL Tube Dia.- Rows - Fins per inch 3/8–3–12 3/8–3–12 3/8–4–12 3/8–4–12 3/8–3–12 3/8–4–12

Total face area, Sq. ft. 7 0 70 80 105 120 120

651364010740124401246376463764MFC ,WOLFRIA

008/6008/6008/4008/4008/4008/4mm ,.AID NAF/NAF FO REBMUN

04904904904904904905-3-083 @ MPR ROTOM NAF

COOLER (SHELL & TUBE TYPE)

COOLER PART NUMBER 800-898-00 (1) 800-898-00 (1) 800-898-01 (1) 800-898-01 (1) 800-898-02 (1) 800-898-03 (1)

372372372372372372mm ,RETEMAID LLEHS

788278827391739173917391mm ,HTGNEL

TOTAL WATER HOLDING VOLUME, Liters 7 7 77 74 74 118 113

001001001001001001mm .AID EPIP TUO/NI RETAW

ECONOMIZER.A.NREBMUN TRAP 800-516-67 (1) 800-516-67 (1 ) N.A. 800-516-67 (2 ) N.A.

.A.N.V.E.T.A.N.V.E.T.V.E.T.A.NECIVED NOISNAPXE

GENERALNUMBER OF REFRIGERANT CIRCUITS 1 1 1 1 2 2

REFRIGERANT CHARGE PER COMP., kg (COMP. 1/2) 37 41 46 51 30 33

SOUND PRESSURE LEVEL, dBA (3m./5m./10m.) 70.6/67/61.8 70.6/67/61.8 71.2/67.6/62.4 72.6/69.1/63.9 72.4/68.8/63.6 72.4/68.9/63. 6

SHIPPING /OPERATING WEIGHTS (Aluminum coils), kg 2099/217 0 2120/2191 2254/2325 2690/276 1 3599/3697 3784/3882

SHIPPING /OPERATING WEIGHTS (Copper coils), kg 2253/232 4 2274/2345 2510/2581 3026/309 7 3863/3961 4167/4265

NOTES: 1. All compressors with slider control valve unloading.

2. All compressors operate at 2950 RPM @ 50Hz.

3. Cooler vent and drain size are 1/2" MPT.

4. Sound pressure level : ±2dBA.


9

PHYSICAL DATA

UNIT SIZE AASC110B AASC120B AASC130B AASC140B AASC150B AASC170B AASC185B

COMPRESSOR

42-537-00802-537-00802-537-008 21-537-00840-537-008 00-537-008REBMUN TRAP


OIL CHARGE PER COMPRESSOR, Liters 14 16 16/16 16 18 18 20

52-001% )SSELPETS( LORTNOC YTICAPAC



REFRIGERANT R-134a


zH05-hP1-V022 EGATLOV LORTNOC

CONDENSERCONDENSER COIL Tube Dia.- Rows - Fins per inch 3/8–4–12 3/8–3–1 2 3/8–4–12 3/8–4–1 2 3/8–3–12 3/8–4–12 3/8–4–1 2


06250106250104861180248802482743965136MFC ,WOLFRIA

008/01008/01008/01008/8008/8008/8008/6mm ,.AID NAF/NAF FO REBMUN

04904904904904904904905-3-083 @ MPR ROTOM NAF


COOLER PART NUMBER 800-898-04 (1) 800-898-04 (1) 800-898-05 (1) 800-898-05 (1) 800-898-06 (1) 800-898-07 (1) 800-898-08 (1)


8192709270927092709278827882mm ,HTGNEL

TOTAL WATER HOLDING VOLUME, Liters 108 108 164 164 159 153 263


ECONOMIZERPART NUMBER 800-516-67 (1) 800-516-67 (2) 800-516-67 (2 ) 800-516-67 (2 ) N.A. 800-516-67 (2 ) 800-516-67 (2 )

.V.E.TECIVED NOISNAPXE T.E.V . T .E.V . T .E.V . N .A. T.E.V. T.E.V .

GENERALNUMBER OF REFRIGERANT CIRCUITS 2 2 2 2 2 2 2

REFRIGERANT CHARGE PER COMP., kg (COMP. 1/2) 39/35 41 46/37 46 51 60 66

SOUND PRESSURE LEVEL, dBA (3m./5m./10m.) 72.5/68.9/63.7 73.6/70/64.8 73.7/70.1/64. 9 73.7/70.2/64.9 75/71.4/66.2 75/71.4/66.2 75.2/71.6/66. 4

SHIPPING /OPERATING WEIGHTS (Aluminum coils), kg 4093/425 3 4116/4269 4279/443 2 4590/4843 5491/5744 5693/5935 5793/6035

SHIPPING /OPERATING WEIGHTS (Copper coils), kg 4539/469 9 4424/4577 4789/494 2 5101/5354 5953/6206 6362/6604 6558/6800





800-735-12 800-735-08


10

PHYSICAL DATA






COMPRESSOR

23-537-00882-537-008 42-537-00802-537-008 23-537-008 82-537-008REBMUN TRAP



CAPACITY CONTROL (STEPLESS) % 61-001 52-001



REFRIGERANT R-134a





864981846981213012213012213621213621MFC ,WOLFRIA


04904904904904904905-3-083 @ MPR ROTOM NAF




539253928192819281928192mm ,HTGNEL

TOTAL WATER HOLDING VOLUME, Liters 256 256 242 242 419 419


ECONOMIZERPART NUMBER 800-516-67 (2) 800-516-67 (2) N.A. N.A. N.A. N.A.

.A.N.A.N.A.N.A.N.V.E.T.V.E.TECIVED NOISNAPXE



SOUND PRESSURE LEVEL, dBA (3m./5m./10m.) 76/72.5/67.2 76.1/72.6/67.3 77.4/73.9/68.7 77.6/74.1/68.8 77.8/74.3/69 77.9/74.4/69.1

SHIPPING /OPERATING WEIGHTS (Aluminum coils), kg 6092/633 4 6262/6504 8698/9117 8635/905 4 9279/9698 9329/9748

SHIPPING /OPERATING WEIGHTS (Copper coils), kg 6587/709 9 7142/7384 9391/9810 9328/9747 10427/10846 10478/1089 7


11

PHYSICAL DATA


COMPRESSOR

23-537-00882-537-008 42-537-00882-537-008 23-537-008 82-537-008REBMUN TRAP



CAPACITY CONTROL (STEPLESS) % 21-001 61-001



REFRIGERANT R-134a





426252426252025012025012864981864981MFC ,WOLFRIA


04904904904904904905-3-083 @ MPR ROTOM NAF




819281928192819253925392mm ,HTGNEL

TOTAL WATER HOLDING VOLUME, Liters 406 406 263 263 256 256


ECONOMIZERPART NUMBER 800-516-67 (3) 800-516-67 (3) N.A. 800-516-67 (4) 800-516-67 (4) 800-516-67 (4)

.V.E.T.V.E.TECIVED NOISNAPXE N.A. T.E.V. T.E.V . T .E.V.



SOUND PRESSURE LEVEL, dBA (3m./5m./10m.) 77.8/74.3/69 77.9/74.4/69.1 78.4/74.9/69.9 78.2/74.6/69.4 79/75.5/70.2 79.1/75.6/70.3

SHIPPING /OPERATING WEIGHTS (Aluminum coils), kg 9633/10052 9690/10109 12115/12599 12125/12609 13132/1361 6 13176/1366 0

SHIPPING /OPERATING WEIGHTS (Copper coils), kg 10954/11373 11011/11430 13455/13939 13657/14141 14893/15377 14937/15421






12

SELECTION PROCEDURE (ENGLISH UNITS)

TABLE - 2

EVAPORATOR FOULINGFACTOR (HR-FT2-0F/BTU)

0.0001 00.0002 50.0005 00.0007 50.0010 0

CAPACITYCORRECTION

FACTOR1.00 00.99 20.97 80.96 50.95 1

POWERINPUT

FACTOR1.00 00.99 70.99 00.98 40.97 8

ARISTANDARDS

ARI-550/590-98ARI-590-86ARI-590-81

TABLE - 3CHILLED WATER TEMPERATURE RISE (0F)

CO

RR

ECTI

ON

FA

CTO

R (

0 F)

0

-0.2

-0.45 10

+0.4

+0.2

+0.6

15 20

ELEVATION ABOVESEA LEVEL (FT.)

CAPACITYCORRECTION

FACTOR0

200 0400 0600 0800 0

1000 0

1.000.990.980.970.960.95

TABLE - 1

DESIGN REQUIREMENTS

The following design requirements must be known to select a package chiller.

1. Required cooling capacity in tons 2. Leaving chilled water temperature in °F (LCWT) 3. Chilled water fl ow rate in GPM4. Chilled water cooling range in °F (water in temp. - water out temp.) 5. Design ambient temperature 6. Minimum ambient temperature 7. Altitude8. Electrical power supply

SAMPLE SELECTION

Select an Air Cooled Packaged chiller for the following conditions: Required system capacity is 110 tons at 54°F entering chilled water and 44°F leaving water. Design ambient temperature is 95°F. Altitude is 2000 feet above sea level. Water cooler fouling factor is 0.00010. Power supply: 380/415V-3Ph-50Hz.

STEP-1: UNIT SELECTION

Entering the capacity performance data at given LCWT and ambient temperature.AASC120B chiller unit at sea level will produce 115.7 tons and 123 kW compressor power input at 44°F leaving chilled water temperature with 10°F water temperature diff erence and 95°F ambient temperature.

For the conditions required, the unit actual cooling capacity when corrected for altitude(0.99) and fouling factor (1.0). Capacity = 115.7x0.99x1.0 = 114.5 Tons, which then exceedsthe requirements. So the selection is correct.

STEP-2: CHILLED WATER FLOW (GPM):

Water GPM = Required capacity (Tons) x 24 = 110 x 24 = 264 GPM Cooling Range, ΔT 10°F

Referring to pressure drop chart (page # 22), pressure drop 264 GPM = 13.3 ffl of water for selected model.

NOTE: The total fl ow rate should be divided by 2 for models AASC350B - AASC445B to fi nd out the total pressure drop.

STEP-3: ELECTRICAL

Refer to electrical data at 380/415V-3Ph-50Hz, the main power wire size for AASC120B is to be sized for a minimum circuit ampacity (MCA) of 269 Amps and maximum over current protection (MOCP) of 374 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 drop calculated in step 2.

STEP-5: LCWT CORRECTION

Refer to table-3: Add correction factor to design leaving chilled water temperature (LCWT) when chilled water temperature range is above 10°F and subtract correction from design leaving chilled water temperature (LCWT) when water temperature range is below 10°F.

EXAMPLE: If LCWT rise is 12.5°F, enter correction curve at 12.5°F and read the correction factor of 0.2. The corrected LCWT is 44+0.2 = 44.2°F.

NOTE: 1. When the chilled water temperature rise is less than 5°F, the high water fl ow rate will result to excessive pressure drop. In such cases, contact factory for special selection of a cooler with wider baffl e spacing. 2. Please refer to water pressure drop curves.


13

SELECTION PROCEDURE (METRIC UNITS)

TABLE - 2

EVAPORATOR FOULINGFACTOR (M2-0C/W)

0.0000180.0000440.0000880.0001320.000176

CAPACITYCORRECTION

FACTOR1.00 00.99 20.97 80.96 50.95 1

POWERINPUT

FACTOR1.00 00.99 70.99 00.98 40.97 8

ARISTANDARDS

ARI-550/590-98ARI-590-86ARI-590-81

TABLE - 3CHILLED WATER TEMPERATURE RISE (0C)

CO

RR

ECTI

ON

FA

CTO

R (0

C)

+0.33

+0.22

+0.11

-0.11

-0.2254 6 7 8

0

109

ELEVATION ABOVESEA LEVEL (Meter)

CAPACITYCORRECTION

FACTOR0

600120 0180 0240 0300 0

1.000.990.980.970.960.95

TABLE - 1

DESIGN REQUIREMENTS

The 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 °C (LCWT) 3. Chilled water fl ow rate in LPS4. Chilled water cooling range in °C (water in temp. - water out temp.) 5. Design ambient temperature 6. Minimum ambient temperature 7. Altitude8. Electrical power supply

SAMPLE SELECTION

Select an Air Cooled Packaged chiller for the following conditions: Required system capacity is 395 kW at 12°C entering chilled water and 6°C leaving water. Design ambient temperature is 35°C. Altitude is 600 meter abovesea level. Water cooler fouling factor is 0.000018. Power supply: 380/415V-3Ph-50Hz.

STEP-1: UNIT SELECTION

Entering the capacity performance data at given LCWT and ambient temperature. AASC120B chiller unit at sea level will produce 405.1 kW and 122.8 kW compressor power input at 6°C leaving chilled water temperature with 6°C water temperature diff erence and 35°C ambient temperature.

For the conditions required, the unit actual cooling capacity when corrected for altitude (0.99) and fouling factor (1.0). Capacity = 405.1x0.99X1.0 = 401 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 = 395 x 0.239 = 15.7 LPS Cooling Range, ΔT 6°C

Referring to pressure drop chart (page # 22), pressure drop at 15.7 LPS = 36 kPa for selected model.

NOTE: The total fl ow rate should be divided by 2 for models AASC350B - AASC445B to fi nd out the total pressure drop.

STEP-3: ELECTRICAL

Refer to electrical data at 380/415V-3Ph-50Hz, the main power wire size for AASC120B is to be sized for a minimum circuit ampacity (MCA) of 269 Amps and maximum over current protection (MOCP) of 374 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 drop calculated in step 2.

STEP-5: LCWT CORRECTION

Refer to table-3: Add correction factor to design leaving chilled water temperature (LCWT) when chilled water temperature range is above 6°C and subtract correction from design leaving chilled water temperature (LCWT) when water temperature range is below 6°C.

EXAMPLE: If LCWT rise is 7.4°C, enter correction curve at 7.4°C and read the correction factor of 0.11. The corrected LCWT is 6°C+0.11 = 6.11°C.

NOTE: 1. When the chilled water temperature rise is less than 3°C, the high water fl ow rate will result to excessive pressure drop. In such cases, contact factory for special selection of a cooler with wider baffl e spacing. 2. Please refer to water pressure drop curves.


14

ETHYLENE GLYCOL SOLUTION CAPACITY CORRECTION (ANTIFREEZE)

When operating in areas with temperatures below 32°F (0°C), cooler protection in the form of Ethylene glycol solution (brine solution) is required to protect cooler from low ambient freeze-up. This brine solution must be added to water loop to bring down the freezing point with a diff erence of 15°F (8°C) below minimum operating ambient temperature.

Ethylene glycol solution causes a variation in unit performance. To obtain the eff ective performance, it is necessary to multiply the water performance data by correction factors corresponding to the ambient temperature or Ethylene glycol percentage indicated in the following table.

EXAMPLE: English system - Determine Ethylene glycol percentage by weight and correction factors at 38°F ambient temperature. From the above table, Ethylene glycol water solution concentration (percentage by weight) corresponding to 38°F ambient temperature is 12% by weight.

Find the correction factors corresponding to 38°F ambient temperature from the table. Cooling capacity correction factor is 0.985, Flow correction factor is 1.02, Pressure drop correction factor is 1.07. Apply these correction factors for corrected system performance values.

TONS (E.G. SOLUTION) = Tons (water) x Cooling capacity correction factor. BRINE (E.G. SOLUTION) FLOW (GPM) = Flow (water) x Flow correction factor. BRINE (E.G. SOLUTION) PRESSURE DROP = Water pressure drop (Ft.) x Pressure drop correction factor.

EXAMPLE: Metric system - Determine Ethylene glycol percentage by weight and correction factors where 3.3°C ambient temperature. From the above table, Ethylene glycol water solution concentration (percentage by weight) corresponding to 3.3°C ambient temperature is 12% by weight.

Find the correction factors corresponding to 3.3°C ambient temperature from the table. Cooling capacity correction factor is 0.985, Flow correction factor is 1.02, Pressure drop correction factor is 1.07. Apply these correction factors for corrected system performance values.

KW (E.G. SOLUTION) = KW (water) x Cooling capacity correction factor. BRINE (E.G. SOLUTION) FLOW (L/S) = KW (water) x Flow correction factor. BRINE (E.G. SOLUTION) PRESSURE DROP = Water pressure drop (kPa) x Pressure drop correction factor.

NOTE: Correction factors apply to published chilled water performance rating from 40°F to 50°F (4.4°C to 10°C) LCHWT.

ETHYLENE GLYCOL % BY WEIGHT 0% 12% 22% 30% 36% 41% 46% 50%

Freezing point of Ethylene glycol solution 00C (320F) -50C (230F) -100C (140F) -15 0C (50F) -20 0C (-4 0F) -25 0C (-1 30F) -300C (-2 20F) -350C (-3 10F)

Ambient temperature 8. 30C (470F) 3. 30C (380F) -1.7 0C (290F) -6. 70C (200F) -11. 70C (110F) -16.7 0C (20F) -21. 70C (-70F) -26.7 0C (-1 60F)

Cooling capacity correction factor 1. 0 0.985 0.98 0 0.974 0.97 0 0.965 0.964 0.96 0

Water flow correction factor 1. 0 1.0 2 1.0 4 1.075 1.11 1.14 1.17 1.20

Pressure drop correction factor 1. 0 1.0 7 1.1 1 1.1 8 1.2 2 1.2 4 1.2 7 1.3 0


15

PERFORMANCE DATA (ENGLISH UNITS)

AA

SC 0

55B

48.1

50.2

9.85

115.

345

56.5

8.31

108

41.6

64.3

6.86

99.8

39

70.7

5.9

293

.737

.97

3.6

5.5

490

.9

AA

SC 0

60B

52.8

58.8

9.4

412

6.8

50.

568

.87

.84

121.

147

.68

1.2

6.3

81

14.3

45.3

91.

35

.46

108

.844

.396

5.09

106.

3

AA

SC 0

70B

59.1

67.1

9.4

141.

956

.57

8.5

7.8

135.

653

.392

.86

.33

128

50.8

104.

55

.412

249

.710

9.9

5.04

119.

2

AA

SC 0

75B

63.7

75.

29

.15

153

59.6

85.3

7.6

414

3.1

55.

197

.66

.23

132.

151

.61

07.5

5.34

123.

850

112.

14

.98

120

.0

AA

SC 0

90B

82.4

86.5

9.97

197.

67

8.7

101

8.31

188.

87

4.3

119

6.77

178.

370

.81

33.6

5.8

116

9.9

69.2

140.

55

.43

166

.1

AA

SC 1

00B

90.9

96

10.0

421

8.2

84.7

108.

28

.42

203

.277

.912

36.

8918

6.9

72.7

135

.15

.91

174.

570

.414

0.8

5.5

116

9

AA

SC 1

10B

103.

411

1.9

9.9

724

8.2

97.4

128.

58

.28

233.

790

.614

8.8

6.74

217.

485

.316

55.

7720

4.8

83

172

.55.

3819

9.2

AA

SC 1

20B

111.

512

0.8

10.0

326

7.6

106.

314

1.3

8.29

255.

110

0.1

166.

46.

7124

0.3

95.2

186.

75.

7322

8.5

92.

91

96.2

5.34

223.

1

AA

SC 1

30B

122.

213

0.6

9.95

293.

21

16.7

152.

58

.27

280

110.

117

9.6

6.73

264.

310

4.9

201.

75

.76

251

.810

2.5

212

5.38

246

AA

SC 1

40B

129.

214

0.2

9.8

831

0.2

123

.11

648.

1729

5.5

115.

91

93.1

6.63

278.

211

0.2

216.

65

.67

264

.510

7.6

227

.55.

2825

8.2

AA

SC 1

50B

142.

915

5.7

9.9

43

4313

3.1

175.

78

.331

9.4

122.

31

99.7

6.78

293.

511

4.2

218.

95

.81

274

110.

52

27.8

5.42

265.

3

AA

SC 1

70B

162.

817

9.2

9.7

63

90.7

155.

220

9.7

8.0

737

2.4

146.

124

7.1

6.54

350.

513

8.8

277.

55

.58

333

.213

5.5

291

.65.

23

25.2

AA

SC 1

85B

176.

419

8.7

9.6

442

3.4

167

.923

2.8

7.9

440

2.9

157.

827

4.7

6.4

378.

614

9.8

308

.75.

4535

9.4

146

.132

4.4

5.0

83

50.6

AA

SC 2

00B

188

206.

69

.91

451

.117

9.4

241

.98

.19

430.

716

9.3

285.

76.

6240

6.2

161.

232

1.3

5.65

386.

81

57.4

337.

95

.26

377

.8

AA

SC 2

15B

197.

521

5.4

9.8

547

4.1

188

.625

2.4

8.1

545

2.6

177.

92

98

6.6

142

716

9.4

335

.25

.64

406

.616

5.5

352

.45.

2639

7.3

AA

SC 2

40B

226.

823

0.6

10.

6454

4.3

211.

325

9.3

8.91

507.

119

4.4

293.

97.

3146

6.6

181.

73

21.7

6.29

436.

11

76.1

334.

65

.87

422

.5

AA

SC 2

55B

244

256.

99.

9358

5.5

226.

928

9.4

8.3

254

4.6

208.

332

8.4

6.8

34

99.9

194.

335

9.6

5.8

74

66.4

188

. 137

3.9

5.4

84

51.4

AA

SC 2

75B

263.

226

810

.33

631.

824

5.5

301

.58.

6858

9.2

226

342.

27.

1454

2.5

211

.43

74.9

6.15

507.

32

04.8

390

5.75

491.

6

AA

SC 3

00B

284.

628

7.5

10.5

683

264.

93

23.7

8.8

635.

924

3.5

367

7.22

584.

42

27.4

401.

66

.21

545

.822

0.3

417

.55.

8152

8.6

AA

SC 3

15B

301.

131

410

.27

722.

628

7.2

367

8.52

689.

327

0.8

432.

16.

9264

9.9

257

.84

84.9

5.92

618.

72

51.8

509.

45

.52

604

.3

AA

SC 3

30B

315.

933

4.1

10.1

975

8.2

301

391

8.4

272

2.3

283.

446

0.4

6.83

680.

12

69.5

516.

55

.83

646

.72

63.1

542.

55

.44

631

.4

AA

SC 3

50B

332

.83

71.3

9.7

679

8.8

309.

541

9.4

8.12

742.

82

83.9

477.

16

.62

681

.526

4.7

523

.15

.66

635

.225

65

44.2

5.28

614.

5

AA

SC 3

70B

352.

839

7.3

9.7

384

6.7

335.

74

65.7

88

05.8

315.

554

9.4

6.45

757.

32

99.5

617

.35.

4971

8.8

292

.264

8.8

5.1

17

01.2

AA

SC 4

05B

377.

740

6.3

10.1

190

6.4

361

475.

18.

3886

6.4

341

560.

56.

7981

8.4

325

.163

0.4

5.8

780.

23

17.7

662.

95

.41

762

.6

AA

SC 4

45B

422.

344

6.1

10.3

810

13.5

402.

152

1.9

8.56

965.

13

78.4

614.

36

.92

908

.135

9.6

689

5.9

863

.135

17

23.5

5.5

842

.5

AA

SC 0

55B

51.3

51.

810

.23

123.

24

85

8.3

8.6

311

5.1

44.

366

.37

.12

106.

341

.572

.76

.15

99.

74

0.3

75.6

5.7

696

.7

AA

SC 0

60B

56.3

60.

79

.78

135

.153

.771

.08

.12

129.

05

0.7

83.7

6.6

11

21.7

48.

39

45

.66

116

47.2

98.8

5.29

113.

3

AA

SC 0

70B

63.2

69.3

9.7

615

1.7

60.4

81.2

8.0

91

4557

.095

.86.

5713

6.9

54.

41

07.7

5.62

130.

55

3.2

113

.25.

2512

7.6

AA

SC 0

75B

68.6

78.2

9.5

11

64.6

64.1

88.5

7.9

315

3.8

59.

110

1.0

6.4

81

41.8

55.3

111

5.56

132.

75

3.6

115

.65.

1912

8.7

AA

SC 0

90B

84.4

87.

610

.11

202.

58

0.6

102

.38

.42

193.

576

.212

0.4

6.8

81

82.9

72.

71

35.2

5.9

174

.571

.114

25.

5217

0.6

AA

SC 1

00B

93.3

97.0

10.2

122

3.8

86.

91

09.4

8.55

208.

78

012

4.6

7.0

192

74.8

137

6.0

179

.472

.41

42.8

5.5

917

3.8

AA

SC 1

10B

105.

611

3.1

10.

0825

3.5

99.5

130.

18

.37

238.

992

.715

0.5

6.8

22

22.4

87.

41

66.9

5.84

209.

78

51

74.5

5.45

204

AA

SC 1

20B

113.

812

210

.14

273.

110

8.5

142

.88.

3826

0.5

102.

31

68.2

6.79

245.

69

7.4

188

.85.

82

33.7

95.1

198.

35

.41

228

.3

AA

SC 1

30B

124.

613

1 .8

10.

0629

9.1

119.

115

4.1

8.36

285.

811

2.5

181

.56.

8127

0.0

107

.32

03.7

5.84

257.

51

04.9

214.

15

.45

251

.7

AA

SC 1

40B

132.

514

2.1

10.0

131

812

6.3

166.

28

.28

303.

211

9.0

195.

66

.73

285

.71

13.2

219

.35.

7627

1.8

110

.623

0.3

5.3

72

65.5

AA

SC 1

50B

146.

715

7.9

10.0

835

2.1

136

.71

78.2

8.41

328.

11

25.7

202.

46

.88

301

.811

7.5

221

.85.

9128

211

3.8

230

.75.

5227

3.2

AA

SC 1

70B

166.

718

1.4

9.8

840

015

8.9

212

.38

.18

381.

514

9.8

250.

26

.63

359

.51

42.5

280.

85

.67

342

139.

22

95.1

5.28

334.

1

AA

SC 1

85B

180.

520

1.1

9.75

433.

31

71.9

235

.88.

0341

2.6

161

.727

8.2

6.4

93

88.2

153.

73

12.6

5.53

368.

81

5032

8.5

5.1

536

0

AA

SC 2

00B

194.

821

0.4

10.1

467.

418

624

6.4

8.3

444

6.3

175.

62

90.8

6.76

421.

31

67.3

326.

95

.77

401

.416

3.5

343

.75.

3839

2.3

AA

SC 2

15B

204.

721

9.5

10.0

449

1.3

195

.52

57.1

8.31

469.

21

84.6

303.

46

.74

443

175.

934

15.

7642

2.2

172

358.

45

.38

412

.7

AA

SC 2

40B

232.

923

3.7

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ING

CHIL

LED

WAT

ER T

EMP.

(LCW

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PER

ATU

RE

CA

P.(T

ons)

CO

MP.

kWEE

RW

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PM)

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ons)

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17


LEG

END

:kW

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ompr

esso

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wer

inpu

tG

PM

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allo

ns P

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inut

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Effici

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Rat

io

480 F

500 F

NO

TES:

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ckag

ed

chill

ers

are

rate

d w

ith A

RI s

tand

ard

550/

590-

98.

2.Pe

rfor

man

ce

data

are

bas

ed o

n 10

0 F w

ater

ran

ge i

n ev

apor

ator

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gs a

re b

ased

on

0.00

010

(hr-

ft2 -0 F/

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fou

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or f

or e

vapo

rato

r.

4.D

irect

inte

rpol

atio

n is

per

mis

sibl

e. D

o no

t ext

rapo

late

.5.

kW p

ower

inpu

t is

for c

ompr

esso

r on

ly.

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r ent

ire u

nit.

Refe

r to

ele

ctric

al d

ata

for f

an k

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AA

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62.7

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ER T

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ITSI

ZE

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PM)

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ons)

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MP.

kWW

ATER

FLO

W(G

PM)

EER


18

PERFORMANCE DATA (METRIC UNITS)U

NIT

SIZE

LEG

END

:kW

-C

ompr

esso

r po

wer

inpu

tLP

S-

Lite

rs P

er S

econ

dC

OP

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oeffi

cien

t of

Per

form

anc

e

40 C 50 C

NO

TES:

1.Pa

ckag

ed

chill

ers

are

rate

d w

ith A

RI s

tand

ard

550/

590-

98.

2.Pe

rfor

man

ce

data

are

bas

ed o

n 60 C

wat

er r

ange

in

evap

orat

or.

3.Ra

tings

are

bas

ed o

n 0.

0000

18

(m2

-0 C/W

) fo

ulin

g fa

ctor

for

eva

pora

tor.

4.D

irect

inte

rpol

atio

n is

per

mis

sibl

e. D

o no

t ext

rapo

late

.5.

kW p

ower

inpu

t is

for c

ompr

esso

r on

ly.

6.C

OP

for e

ntire

uni

t. Re

fer

to e

lect

rical

dat

a fo

r fan

kW

.

LEAV

ING

CHIL

LED

WAT

ER T

EMP.

(LCW

T)

350 C

AM

BIE

NT

TEM

PER

ATU

RE

400 C

AM

BIE

NT

TEM

PER

ATU

RE

460 C

AM

BIE

NT

TEM

PER

ATU

RE

500 C

AM

BIE

NT

TEM

PER

ATU

RE

520 C

AM

BIE

NT

TEM

PER

ATU

RE

CA

P.(k

W)

CO

MP.

kWC

OP

WAT

ERFL

OW

(LPS

)C

AP.

(kW

)C

OM

P.kW

CO

PW

ATER

FLO

W(L

PS)

CA

P.(k

W)

CO

MP.

kWC

OP

WAT

ERFL

OW

(LPS

)C

AP.

(kW

)C

OM

P.kW

CO

PW

ATER

FLO

W(L

PS)

CA

P.(k

W)

CO

MP.

kWW

ATER

FLO

W(L

PS)

CO

P

AA

SC 0

55B

167.

249

.92

.87

6.7

157.

555

.52

.46

6.3

144.

66

3.8

2.0

5.8

135.

370

.21.

725.

413

0.4

73.7

1.5

95

.2

AA

SC 0

60B

184.

158

.52

.75

7.3

176.

667

.42

.33

7.0

165.

880

.51

.86

6.6

157.

690

.81

.59

6.3

153.

196

.41

.46

6.1

AA

SC 0

70B

206.

266

.82

.74

8.2

198

76.

92

.32

7.9

186

92.

11

.85

7.4

176.

910

41

.57

7.1

171.

911

0.5

1.4

56

.9

AA

SC 0

75B

222.

575

.02

.67

8.9

209.

583

.82

.27

8.4

192.

196

.91

.82

7.7

179.

410

71.

557.

217

2.7

112

.51

.43

6.9

AA

SC 0

90B

287.

38

6.2

2.9

11

1.5

275.

899

.12.

4711

.02

59.4

118.

21

.98

10.3

246

.91

33.2

1.69

9.8

240

.214

1.4

1.5

69

.6

AA

SC 1

00B

317.

09

5.7

2.9

31

2.6

297.

51

06.5

2.5

11.9

271

.912

2.2

2.0

210

.82

53.4

134

.51.

7210

.124

3.8

141

.31.

589.

7

AA

SC 1

10B

361.

111

1.4

2.91

14.4

342.

212

6.2

2.4

613

.631

6.7

147.

81

.97

12.6

297

.91

64.4

1.68

11.9

288

173

.51.

5511

.5

AA

SC 1

20B

389.

412

0.3

2.9

315

.537

3.1

138.

52

.47

14.9

350

165.

31

.97

143

32.3

186.

11.

6713

.332

2.8

197

.51.

5412

.9

AA

SC 1

30B

426.

613

0.1

2.9

17.0

409.

514

9.6

2.46

16.3

384.

917

8.4

1.9

71

5.3

366.

220

1.1

1.68

14.6

356

213

.41.

5514

.2

AA

SC 1

40B

450.

913

9.7

2.8

818

.043

1.9

160.

72

.43

17.2

404

.819

1.7

1.9

41

6.1

384

.22

15.8

1.65

15.3

373.

12

28.9

1.52

14.9

AA

SC 1

50B

498.

515

5.1

2.9

19.9

467

.717

2.8

2.4

71

8.6

427.

11

98.3

1.99

17.0

397.

92

181.

6915

.938

2.6

228

.71.

5615

.3

AA

SC 1

70B

568.

317

8.5

2.85

22.7

544.

320

5.5

2.4

21.7

510.

22

45.3

1.92

20.3

484

.22

76.5

1.63

19.3

470.

22

93.4

1.5

18.

7

AA

SC 1

85B

615.

719

7.9

2.8

124

.658

9.1

228.

22

.36

23.5

551

.227

2.7

1.8

82

2.0

522

.33

07.5

1.59

20.8

506.

83

26.4

1.46

20.2

AA

SC 2

00B

655.

620

5.8

2.89

26.1

628.

923

72.

4425

.159

0.8

283.

51

.94

23.6

561

.63

201.

6522

.454

5.8

339

.91.

5121

.8

AA

SC 2

15B

688.

92

14.6

2.87

27.5

661

247.

22.

4326

.462

129

5.7

1.9

324

.85

90.4

333.

81

.64

23.

55

73.9

354.

61

.51

22.

9

AA

SC 2

40B

790.

92

29.7

3.1

31.5

742

.425

5.1

2.6

52

9.6

678.

929

22.

1427

.16

33.3

320.

51

.83

25.

36

09.5

335.

91

.69

24.

3

AA

SC 2

55B

850.

825

5.8

2.9

33.9

797.

428

4.6

2.47

31.8

727.

63

26.2

22

96

77.4

358.

11

.71

27

651

.137

5.4

1.5

82

6.0

AA

SC 2

75B

918 .

02

66.9

3.01

36.6

862.

429

6.6

2.5

834

.47

89.4

339.

92

.09

31.5

736

.737

3.4

1.7

92

9.4

709

.239

1.6

1.6

52

8.3

AA

SC 3

00B

993.

528

6.4

3.0

639

.69

3231

8.5

2.6

237

.285

1.5

364.

82

.12

347

93.7

400.

21

.81

31.

77

63.6

419.

41

.67

30.

4

AA

SC 3

15B

1051

.63

133

41.

910

08.3

359.

92.

5440

.294

6.8

429.

22.

0337

.88

99.9

483.

31

.73

35.

98

74.6

512.

81

.59

34.

9

AA

SC 3

30B

1103

.333

2.9

2.9

84

410

56.7

383.

32

.51

42.

19

90.7

457.

32

.039

.594

0.6

514

.81.

73

7.5

913

.754

6.0

1.5

73

6.4

AA

SC 3

50B

1161

.236

9.7

2.8

54

6.3

108

8.2

412.

42.

4243

.499

2.1

473

.91.

9439

.692

2.8

521

1.65

36.8

886.

55

46.4

1.52

35.3

AA

SC 3

70B

1231

.539

5.8

2.8

44

9.1

1178

.245

6.4

2.3

847

.01

102.

45

45.5

1.89

44.0

1044

.661

51

.641

.710

13.6

652.

81

.47

40.

4

AA

SC 4

05B

1317

.140

4.7

2.9

55

2.5

126

54

65.6

2.49

50.4

1190

.255

6.4

1.9

94

7.5

113

2.7

627

.91.

6945

.211

01.7

667

1.5

54

3.9

AA

SC 4

45B

1474

.644

4.5

3.0

35

8.8

1411

.751

1.7

2.55

56.3

132

2.8

610

.12.

0352

.712

55.3

686.

71

.72

50.

11

219.

17

28.3

1.58

48.6

AA

SC 0

55B

175.

851

.12.

957.

016

5.7

56.9

2.54

6.6

152

.265

.32.

066.

11

42.5

71.9

1.78

5.7

137

.575

.41.

645.

5

AA

SC 0

60B

193.

059

.92.

837.

718

5.2

692.

397.

417

4.2

82.4

1.9

26

.916

5.7

92.9

1.6

46

.616

1.1

98.7

1.5

16

.4

AA

SC 0

70B

216.

368

.42.

828.

620

7.8

78.8

2.38

8.3

195.

594

.31.

97

.818

6.1

106.

41

.62

7.4

181.

111

31.

497.

2

AA

SC 0

75B

234.

176

.92.

749.

322

0.4

86.1

2.33

8.8

202

.399

.31.

888.

11

89.1

109.

61

.67.

51

82.2

115.

11

.47

7.3

AA

SC 0

90B

294.

787

.32

.95

11.8

282

.910

0.3

2.5

11

1.3

266.

31

19.6

2.01

10.6

253

.513

4.7

1.7

21

0.1

246

.714

2.9

1.5

99

.8

AA

SC 1

00B

326

96.8

2.98

1330

5.9

107

.72.

5412

.227

9.6

123

.82.

0511

.12

60.6

136.

41

.75

10.

42

50.7

143.

31

.61

10.

0

AA

SC 1

10B

369.

811

2.9

2.9

514

.735

0.5

127.

92

.514

.032

4.4

149

.62.

01

2.9

305

.216

6.4

1.7

11

2.2

295

.117

5.5

1.5

71

1.8

AA

SC 1

20B

398.

712

1.8

2.9

715

.938

2.1

140.

22

.515

.235

8.5

167

.21.

9914

.33

40.6

188.

31

.713

.633

0.9

199

.71.

5613

.2

AA

SC 1

30B

437.

213

1.7

2.9

417

.441

9.6

151.

42

.49

16.7

394

.718

0.5

2.0

15.7

375.

62

03.3

1.71

15.0

365.

32

15.8

1.57

14.6

AA

SC 1

40B

462.

714

1.6

2.9

218

.544

3.3

162.

92

.47

17.7

415

.819

4.2

1.9

716

.63

94.9

218.

51

.68

15.

73

83.7

231.

71

.54

15.

3

AA

SC 1

50B

512.

715

7.4

2.9

420

.44

8117

5.3

2.5

19.2

439.

520

1.1

2.0

217

.54

09.6

220.

91

.72

16.

33

93.9

231.

61

.59

15.

7

AA

SC 1

70B

583.

118

0.9

2.8

923

.355

8.7

208.

32

.44

22.3

524

248.

61

.94

20.9

497

.627

9.9

1.6

51

9.8

483

.429

71.

5219

.3

AA

SC 1

85B

632.

020

0.7

2.8

525

.260

4.8

231.

42

.424

.156

6.3

276

.51.

92

2.6

537

311.

61

.61

21.4

521

.233

0.7

1.4

82

0.8

AA

SC 2

00B

677.

820

9.3

2.9

42

76

50.4

241.

12

.48

25.

96

11.3

288.

31

.98

24.4

581

.432

5.2

1.6

82

3.2

565

.334

5.3

1.5

42

2.5

AA

SC 2

15B

7 12.

721

8.3

2.9

328

.468

3.9

251.

62

.47

27.3

642

.830

0.8

1.9

725

.66

11.6

339.

21

.68

24.

45

94.7

360.

21

.54

23.

7

AA

SC 2

40B

812.

523

2.8

3.1

532

.476

2.6

258.

52

.69

30.4

697

.529

5.7

2.1

727

.86

50.9

324.

41

.86

26.

06

26.6

339.

91

.72

25.

0

AA

SC 2

55B

874.

025

9.5

2.9

434

.981

9.2

288.

72

.51

32.7

747

.533

0.6

2.0

329

.86

96.1

362.

81

.74

27.

86

69.4

380.

21

.626

.7

AA

SC 2

75B

943.

727

0.6

3.0

637

.688

6.6

300.

72

.62

35.4

811

.634

4.4

2.1

232

.47

57.7

378.

11

.82

30.

27

29.5

396.

31

.68

29.

1

AA

SC 3

00B

101

82

90.2

3.1

40.

69

54.9

322.

62

.65

38.

18

72.5

369.

22

.14

34.

88

13.4

404.

81

.84

32.

47

82.6

424

1.6

93

1.2

AA

SC 3

15B

1076

.13

16.6

3.04

42.9

103

23

64.2

2.57

41.1

969.

44

34.2

2.05

38.7

921.

84

88.7

1.75

36.8

896.

35

18.4

1.61

35.7

AA

SC 3

30B

1129

.333

7.1

3.0

14

510

81.3

388

2.54

43.1

101

4.6

462.

82

.03

40.

59

63.8

520.

71

.73

38.

49

36.5

552.

11

.59

37.

3

AA

SC 3

50B

1193

.537

5.3

2.8

94

7.6

1118

.441

8.6

2.45

44.6

101

9.8

480

.61.

9740

.794

8.8

528

1.68

37.8

911.

75

53.5

1.54

36.4

AA

SC 3

70B

1264

.140

1.4

2.8

85

0.4

1209

.746

2.9

2.4

248

.21

132.

655

31.

9245

.210

73.9

623.

21

.62

42.8

104

2.4

661

.41.

4941

.6

AA

SC 4

05B

1362

.04

11.3

3.0

54.

313

08.3

473.

42

.54

52.2

123

1.6

565

.52.

0349

.111

72.8

637.

81

.73

46.

81

141.

26

77.3

1.59

45.5

AA

SC 4

45B

1508

.044

9.8

3.0

76

0.1

1443

.851

7.8

2.58

57.6

135

3.4

617

.12.

0554

.012

84.9

694.

21

.75

51.

21

248.

17

36.0

1.6

49.

8


19

PERFORMANCE DATA (METRIC UNITS)

LEG

END

:kW

-C

ompr

esso

r po

wer

inpu

tLP

S-

Lite

rs P

er S

econ

dC

OP

-C

oeffi

cien

t of

Per

form

anc

e

60 C 70 C

NO

TES:

1.Pa

ckag

ed

chill

ers

are

rate

d w

ith A

RI s

tand

ard

550/

590-

98.

2.Pe

rfor

man

ce

data

are

bas

ed o

n 60 C

wat

er r

ange

in

evap

orat

or.

3.Ra

tings

are

bas

ed o

n 0.

0000

18

(m2

-0 C/W

) fo

ulin

g fa

ctor

for

eva

pora

tor.

4.D

irect

inte

rpol

atio

n is

per

mis

sibl

e. D

o no

t ext

rapo

late

.5.

kW p

ower

inpu

t is

for c

ompr

esso

r on

ly.

6.C

OP

for e

ntire

uni

t. Re

fer

to e

lect

rical

dat

a fo

r fan

kW

.

UN

ITSI

ZE

LEAV

ING

CHIL

LED

WAT

ER T

EMP.

(LCW

T)

350 C

AM

BIE

NT

TEM

PER

ATU

RE

400 C

AM

BIE

NT

TEM

PER

ATU

RE

460 C

AM

BIE

NT

TEM

PER

ATU

RE

500 C

AM

BIE

NT

TEM

PER

ATU

RE

520 C

AM

BIE

NT

TEM

PER

ATU

RE

CA

P.(k

W)

CO

MP.

kWC

OP

WAT

ERFL

OW

(LPS

)C

AP.

(kW

)C

OM

P.kW

CO

PW

ATER

FLO

W(L

PS)

CA

P.(k

W)

CO

MP.

kWC

OP

WAT

ERFL

OW

(LPS

)C

AP.

(kW

)C

OM

P.kW

CO

PW

ATER

FLO

W(L

PS)

CA

P.(k

W)

CO

MP.

kWW

ATER

FLO

W(L

PS)

CO

P

AA

SC 0

55B

185.

752

.53

.05

7.4

174.

758

.42

.61

7.0

160.

26

7.0

2.1

36

.414

9.9

73.

61

.83

6.0

144.

47

7.1

1.6

95

.8

AA

SC 0

60B

203.

761

.62

.91

8.1

195.

470

.92.

467.

81

83.6

84.6

1.97

7.3

174.

795

.31.

687.

016

9.9

101.

11

.55

6.8

AA

SC 0

70B

229.

570

.52

.91

9.1

220.

281

.22

.46

8.8

207.

19

6.9

1.9

78

.319

7.1

109.

21

.68

7.9

191.

81

15.8

1.54

7.6

AA

SC 0

75B

250.

07

9.7

2.8

41

0.0

235.

089

.02.

419.

421

5.1

102

.51.

948.

62

00.8

112.

71.

668

193

.311

8.3

1.5

37

.7

AA

SC 0

90B

300.

98

8.2

2.9

91

2.0

289.

110

1.4

2.5

411

.527

2.3

120.

82

.04

10.9

259

.513

61.

7510

.325

2.7

144

.31.

6110

.1

AA

SC 1

00B

333.

09

7.7

3.0

21

3.3

312.

81

08.8

2.58

12.5

286.

21

25.2

2.08

11.4

267

138.

11.

7710

.625

7.0

145

.11.

6310

.2

AA

SC 1

10B

376.

311

3.9

2.97

1535

6.9

129.

12.

5214

.233

0.9

151.

12

.02

13.2

311

.71

68.1

1.73

12.4

301.

61

77.3

1.59

12.0

AA

SC 1

20B

405.

112

2.8

2.9

916

.238

8.5

141.

42

.52

15.5

365

.116

8.8

2.0

114

.63

47.2

190

1.71

13.8

337.

62

01.6

1.58

13.5

AA

SC 1

30B

443.

513

2.6

2.97

17.7

426.

115

2.6

2.5

217

.040

1.3

182

.02.

0216

.038

2.4

205

1.72

15.2

372.

22

17.5

1.59

14.8

AA

SC 1

40B

472.

614

3.1

2.9

618

.845

3.1

164.

82

.518

.142

5.5

196

.42.

017

.04

04.6

220

.91

.716

.13

93.3

234.

21

.57

15.

7

AA

SC 1

50B

523.

915

9.2

2.9

820

.949

1.9

177.

42

.53

19.6

450

203.

52

.04

17.

94

19.9

223

.51.

7516

.740

4.2

234

.31.

6116

.1

AA

SC 1

70B

594.

318

2.7

2.92

23.7

569.

921

0.5

2.4

622

.753

5.2

251

.21.

9721

.35

08.8

282

.81.

6720

.349

4.6

300

.01.

5419

.7

AA

SC 1

85B

643.

620

2.7

2.8

825

.761

6.4

233.

82

.42

24.6

577

.927

9.4

1.9

22

3.0

548

.63

14.9

1.63

21.9

532.

93

34.2

1.5

21.

3

AA

SC 2

00B

698.

721

2.6

2.99

27.9

670.

624

5.0

2.5

226

.763

0.8

292.

82

.01

25.2

600

.43

30.2

1.71

23.9

584.

13

50.5

1.57

23.3

AA

SC 2

15B

734.

822

1.8

2.9

729

.370

5.3

255.

72

.51

28.1

663

.530

5.5

2.0

126

.56

31.7

344.

41

.71

25.

26

14.7

365.

51

.57

24.

5

AA

SC 2

40B

831.

42

35.5

3.19

33.2

781

261.

62

.72

31.1

715.

129

9.3

2.2

28.5

668

328.

21

.89

26.6

643

.43

43.8

1.74

25.7

AA

SC 2

55B

893.

626

2.6

2.9

835

.683

8.2

292.

22

.54

33.4

765.

83

34.7

2.06

30.5

713

.936

7.2

1.7

62

8.5

686

.838

4.8

1. 6

32

7.4

AA

SC 2

75B

964.

62

73.6

3.1

38.5

906

.830

4.1

2.6

53

6.2

831.

13

48.3

2.15

33.1

776

.638

2.3

1.8

53

17

48.2

400.

71

.71

29.

8

AA

SC 3

00B

1037

.829

3.2

3.1

44

1.4

974.

532

6.1

2.68

38.9

891.

83

73.2

2.17

35.6

832.

54

09.2

1.86

33.2

801.

64

28.6

1.72

32.0

AA

SC 3

15B

1094

.831

9.4

3.0

64

3.7

1050

.836

7.6

2.5

94

1.9

988

.543

8.3

2.0

839

.49

41.1

493.

51

.77

37.

59

15.7

523.

41.

6336

.5

AA

SC 3

30B

1148

.134

0.1

3.0

44

5.8

110

0.6

391.

82.

5643

.910

33.9

467.

22

.05

41.2

983

.35

25.6

1.75

39.2

956.

35

57.3

1.61

38.1

AA

SC 3

50B

1217

.537

9.5

2.9

24

8.5

114

1.9

423.

42.

4845

.510

42.7

486.

21

.99

41.6

971

.353

41.

73

8.7

933

.955

9.8

1.5

63

7.2

AA

SC 3

70B

1287

.34

05.3

2.9

51.

312

32.8

467.

72

.44

49.2

115

5.8

558

.91.

9446

.110

97.3

629.

81

.64

43.

81

065.

96

68.3

1.51

42.5

AA

SC 4

05B

1404

.141

7.6

3.0

65

6.0

134

9.2

480.

72.

5853

.812

7157

4.2

2.0

65

0.7

121

1.4

647

.31.

7648

.311

79.3

687.

11

.62

47.

0

AA

SC 4

45B

1530

.845

3.4

3.0

96

1.0

1466

.852

2.2

2.6

58.5

137

6.8

622

.52.

0754

.913

08.7

700.

21

.76

52.

21

272.

27

42.4

1.62

50.7

AA

SC 0

55B

192.

953

.63.

117.

718

1.1

59.5

2.67

7.2

165

.868

.12.

176.

61

54.8

74.7

1.86

6.2

149

.178

.21.

725.

9

AA

SC 0

60B

211.

662

.82.

978.

42

02.7

72.3

2.5

18

.119

0.3

86.2

2.0

17

.618

0.9

96.9

1.7

27

.217

5.9

102.

81

.58

7.0

AA

SC 0

70B

239.

372

.02.

979.

52

29.5

82.9

2.5

19

.221

5.6

98.8

2.0

18

.620

5.1

111.

21

.72

8.2

199.

51

17.8

1.58

8.0

AA

SC 0

75B

2 62.

381

.92

.91

10.5

246

.09

1.3

2.4

79

.822

4.7

104.

81

.98

9.0

209.

31

151.

78.

32

01.3

120.

51

.56

8.0

AA

SC 0

90B

307.

989

.23

.02

12.3

296

.010

2.6

2.5

71

1.8

279.

31

22.3

2.07

11.1

266

.513

7.6

1.7

71

0.6

259

.714

5.9

1.6

41

0.4

AA

SC 1

00B

340.

698

.73

.06

13.6

320

.311

0.1

2.6

11

2.8

293.

71

26.9

2.11

11.7

274

.514

01

.810

.92

64.5

147.

11

.66

10.

5

AA

SC 1

10B

383.

611

5.2

3.0

15.3

364

.613

0.6

2.5

41

4.5

338.

91

532.

0513

.532

01

70.3

1.75

12.8

310.

11

79.6

1.61

12.4

AA

SC 1

20B

411.

812

3.9

3.0

216

.439

5.6

142.

82

.55

15.8

372

.717

0.5

2.0

414

.93

55.2

192.

11

.74

14.

23

45.8

203.

81

.613

.8

AA

SC 1

30B

449.

613

3.5

2.9

917

.943

2.6

153.

72

.54

17.3

408

.518

3.5

2.0

416

.33

90.1

206.

81

.74

15.

63

80.1

219.

51

.61

15.

2

AA

SC 1

40B

483.

414

4.9

2.9

919

.346

3.9

166.

82

.53

18.5

436

.519

8.9

2.0

217

.44

15.7

223.

71

.73

16.

64

04.5

237.

11

.59

16.

1

AA

SC 1

50B

535.

516

1.1

3.0

121

.450

3.6

179.

72

.56

20.1

461

.820

6.2

2.0

718

.44

31.7

226.

51

.77

17.

24

15.9

237.

41

.64

16.

6

AA

SC 1

70B

606.

018

4.6

2.9

524

.258

1.8

212.

82

.49

23.2

547

.425

41.

9921

.852

1.4

286

.11

.720

.85

07.4

303.

51

.56

20.

2

AA

SC 1

85B

655.

220

4.6

2.9

26.1

628

.323

6.3

2.4

42

5.1

590.

22

82.5

1.94

23.5

561

.331

8.5

1.6

52

2.4

545

.833

8.0

1.5

22

1.8

AA

SC 2

00B

719.

021

5.8

3.0

428

.769

0.5

248.

82

.56

27.5

650

297.

32

.04

25.9

619

.333

5.1

1.7

42

4.7

602

.835

5.6

1.6

24.0

AA

SC 2

15B

756.

122

5.2

3.0

230

.172

6.1

259.

72

.55

29.0

683

.831

0.2

2.0

427

.36

51.6

349.

41

.74

26.

06

34.4

370.

71

.625

.3

AA

SC 2

40B

853.

223

8.7

3.2

334

.080

2.5

265.

32

.76

32.0

736

.230

3.5

2.2

429

.46

88.8

332.

81

.92

27.

56

64.0

348.

61

.78

26.

5

AA

SC 2

55B

915.

726

6.1

3.0

136

.586

0.0

296.

32

.57

34.3

787

.233

9.5

2.0

931

.47

35.1

372.

61

.79

29.

37

07.9

390.

41

.65

28.

2

AA

SC 2

75B

987.

327

6.9

3.1

439

.492

9.4

308.

02

.69

37.1

853

.535

2.8

2.1

834

.07

98.9

387.

31

.88

31.

97

70.4

405.

81

.74

30.

7

AA

SC 3

00B

1061

.729

6.8

3.1

74

2.3

999

330.

52

.71

39.

89

1737

8.6

2. 2

36.6

858.

14

15.2

1.89

34.2

827.

44

34.9

1.75

33.0

AA

SC 3

15B

1116

.63

22.7

3.1

44.

510

73.3

371.

72

.62

42.8

101

2.1

443

.52.

14

0.4

965

.74

99.5

1.8

38.

59

40.7

529.

91

.66

37.

5

AA

SC 3

30B

1169

.13

43.4

3.07

46.6

112

2.7

396

2.59

44.8

105

7.2

472

.52.

0742

.210

07.7

531.

81

.77

40.

29

81.1

563.

91

.63

39.

1

AA

SC 3

50B

1242

.338

3.9

2.9

54

9.5

1167

.042

8.6

2.5

46.5

106

8.1

492

.42.

0142

.699

6.8

540

.91.

7239

.79

59.5

567.

01

.59

38.

3

AA

SC 3

70B

1310

.440

9.3

2.9

35

2.3

1256

.547

2.6

2.46

50.1

118

0.4

565

.11.

9647

.111

22.6

637

1.6

644

.81

091.

66

76.0

1.53

43.5

AA

SC 4

05B

1445

.04

23.7

3.1

57.

613

89.2

488.

02

.62

55.4

130

9.9

582

.72.

15

2.2

124

9.6

656

.71.

7949

.812

17.1

696.

91

.65

48.

5

AA

SC 4

45B

1555

.945

7.4

3.1

26

2.0

1493

.252

7.3

2.6

25

9.5

1405

629.

02

.09

56.

01

338.

37

07.7

1.79

53.4

1302

.675

0.4

1.6

45

1.9


20

PERFORMANCE DATA (METRIC UNITS)

LEG

END

:kW

-C

ompr

esso

r po

wer

inpu

tLP

S-

Lite

rs P

er S

econ

dC

OP

-C

oeffi

cien

t of

Per

form

anc

e

80 C

100 C

NO

TES:

1.Pa

ckag

ed

chill

ers

are

rate

d w

ith A

RI s

tand

ard

550/

590-

98.

2.Pe

rfor

man

ce

data

are

bas

ed o

n 60 C

wat

er r

ange

in

evap

orat

or.

3.Ra

tings

are

bas

ed o

n 0.

0000

18

(m2

-0 C/W

) fo

ulin

g fa

ctor

for

eva

pora

tor.

4.D

irect

inte

rpol

atio

n is

per

mis

sibl

e. D

o no

t ext

rapo

late

.5.

kW p

ower

inpu

t is

for c

ompr

esso

r on

ly.

6.C

OP

for e

ntire

uni

t. Re

fer

to e

lect

rical

dat

a fo

r fan

kW

.

UN

ITSI

ZE

LEAV

ING

CHIL

LED

WAT

ER T

EMP.

(LCW

T)

350 C

AM

BIE

NT

TEM

PER

ATU

RE

400 C

AM

BIE

NT

TEM

PER

ATU

RE

460 C

AM

BIE

NT

TEM

PER

ATU

RE

500 C

AM

BIE

NT

TEM

PER

ATU

RE

520 C

AM

BIE

NT

TEM

PER

ATU

RE

CA

P.(k

W)

CO

MP.

kWC

OP

WAT

ERFL

OW

(LPS

)C

AP.

(kW

)C

OM

P.kW

CO

PW

ATER

FLO

W(L

PS)

CA

P.(k

W)

CO

MP.

kWC

OP

WAT

ERFL

OW

(LPS

)C

AP.

(kW

)C

OM

P.kW

CO

PW

ATER

FLO

W(L

PS)

CA

P.(k

W)

CO

MP.

kWW

ATER

FLO

W(L

PS)

CO

P

AA

SC 0

55B

197.

954

.33

.16

7.9

185.

76

0.3

2.7

7.4

169.

868

.92.

26

.815

8.4

75.

51

.89

6.3

152.

579

.11

.74

6.1

AA

SC 0

60B

217.

06

3.7

3.0

18

.720

7.9

73.3

2.5

48

.319

5.1

87.3

2.0

47

.818

5.4

98.

11

.74

7.4

180.

210

4.0

1.6

7.2

AA

SC 0

70B

246.

173

.13

.02

9.8

235.

984

.22

.55

9.4

221.

61

00.2

2.04

8.8

210.

711

2.6

1.7

48

.420

4.9

119.

21

.68.

2

AA

SC 0

75B

270.

98

3.4

2.9

51

0.8

253.

792

.92.

510

.123

1.3

106.

42.

019.

22

15.3

116.

71

.72

8.6

207

122.

11

.59

8.3

AA

SC 0

90B

316.

89

0.5

3.0

71

2.6

304.

910

4.2

2.6

112

.228

8.2

124.

12

.11

11.5

275

.51

39.6

1.81

11.0

268.

714

81.

6710

.7

AA

SC 1

00B

350.

310

0.1

3.11

14.0

330

111

.82.

6513

.230

3.3

129

2.14

12.1

284.

11

42.2

1.84

11.3

274.

11

49.2

1.69

10.9

AA

SC 1

10B

394.

411

6.9

3.04

15.7

375.

713

2.9

2.5

815

.035

0.6

155.

82

.08

14.0

332

.21

73.5

1.78

13.2

322.

41

83.1

1.65

12.9

AA

SC 1

20B

421.

712

5.4

3.0

616

.840

6.0

144.

82

.58

16.2

383

.817

3.1

2.0

715

.33

66.9

195.

21.

7714

.635

7.8

207

.21.

6314

.3

AA

SC 1

30B

458.

413

4.8

3.02

18.3

442.

115

5.4

2.5

717

.641

8.9

185.

82

.07

16.

740

1.2

209.

41.

7716

.039

1.6

222

.31.

6415

.6

AA

SC 1

40B

496.

714

7.0

3.0

319

.847

7.4

169.

42

.56

19.0

450

.120

2.0

2.0

61

7.9

429

.42

27.1

1.76

17.1

418.

32

40.7

1.62

16.7

AA

SC 1

50B

549.

816

3.5

3.0

521

.95

1818

2.4

2.6

20.7

476.

320

9.5

2.1

19.0

446

.22

30.1

1.81

17.8

430.

52

41.2

1.67

17.2

AA

SC 1

70B

621.

118

7.1

2.99

24.8

597.

121

5.8

2.5

223

.856

3.2

257

.72.

0222

.55

37.5

290

.21.

7321

.452

3.6

307

.91.

5920

.9

AA

SC 1

85B

670.

120

7.2

2.9

426

.764

3.5

239.

52

.47

25.7

606

286.

51

.97

24.

25

77.5

323

.11.

6823

562.

33

42.9

1.55

22.4

AA

SC 2

00B

739.

021

93.

0829

.571

0.1

252.

62

.628

.366

9.2

301

.82.

0726

.763

8.2

340

.01.

7725

.562

1.6

360

.81.

6324

.8

AA

SC 2

15B

777.

022

8.6

3.0

631

.074

6.6

263.

62

.58

29.8

703

.831

4.8

2.0

728

.16

71.4

354.

41

.77

26.

86

54.0

375.

91

.63

26.

1

AA

SC 2

40B

881.

12

42.8

3.29

35.1

830.

027

0.0

2.8

133

.17

63.2

308.

92

.28

30.4

715

.433

8.7

1.9

72

8.5

690

.535

4.7

1.8

22

7.5

AA

SC 2

55B

943.

927

0.6

3.0

637

.688

7.8

301.

52

.62

35.4

814.

73

45.7

2.12

32.5

762

.237

9.4

1.8

33

0.4

734

.939

7.6

1.6

92

9.3

AA

SC 2

75B

1016

.428

1.1

3.1

94

0.5

958

.331

2.9

2.7

338

.28

82.2

358

.62.

2335

.28

27.4

393.

61

.92

33.

07

98.8

412.

41

.77

31.

9

AA

SC 3

00B

1096

.630

2.2

3.2

34

3.7

103

4.9

337.

02.

7641

.39

54.1

386.

42

.25

38.

08

95.9

424.

01

.94

35.

78

65.5

444.

21

.834

.5

AA

SC 3

15B

1148

.732

7.5

3.1

44

5.8

1106

.437

7.7

2.6

64

4.1

104

6.9

451

.22.

1441

.710

01.6

508.

31

.83

39.

99

77.3

539.

41

.69

39.

0

AA

SC 3

30B

1200

.234

8.4

3.1

14

7.9

115

4.9

402.

22.

6246

.110

91.3

480.

42

.11

43.5

104

3.2

540

.81.

84

1.6

101

7.5

573

.61.

6640

.6

AA

SC 3

50B

1274

389.

52

.98

50.

81

199.

14

35.3

2.53

47.8

1100

.650

0.3

2.0

54

3.9

102

9.6

549

.81.

7541

.199

2.4

576.

31

.62

39.

6

AA

SC 3

70B

1340

.241

4.4

2.9

65

3.4

1287

.047

8.9

2.4

951

.31

211.

95

73.0

1.98

48.3

1155

.164

6.1

1.6

94

6.1

112

4.6

685

.81.

5544

.8

AA

SC 4

05B

1485

.442

9.7

3.1

55

9.2

142

8.7

495.

12.

6657

.013

48.6

591.

22

.13

53.8

128

7.8

666

.01.

8251

.31

255.

17

06.7

1.68

50.0

AA

SC 4

45B

1594

.346

3.6

3.1

56

3.6

1533

.053

4.9

2.66

61.1

144

8.2

638

.92.

1357

.713

83.6

719.

21

.82

55.

21

349.

07

62.7

1.68

53.8

AA

SC 0

55B

208.

555

.93.

248.

319

5.6

62.0

2.78

7.8

179

.170

.82.

267.

11

67.3

77.5

1.95

6.7

161

.281

.11.

86

.4

AA

SC 0

60B

227.

665

.43.

089.

12

18.2

75.3

2.6

18

.720

5.0

89.7

2.0

98

.219

5.1

100.

71

.79

7.8

189.

81

06.7

1.65

7.6

AA

SC 0

70B

258.

275

.13

.09

10.3

247

.68

6.4

2.6

19

.923

2.9

102.

82

.09

9.3

221.

811

5.3

1.7

98

.821

5.8

122.

11

.65

8.6

AA

SC 0

7 5B

284.

885

.93

.02

11.4

266

.99

5.7

2.5

610

.624

3.7

109.

52

.07

9.7

227.

111

9.9

1.7

79

.121

8.5

125.

41

.63

8.7

AA

SC 0

90B

336.

493

.53

.17

13.4

324

.110

7.5

2.7

12.9

306.

71

27.9

2.18

12.2

293

.614

3.6

1.8

81

1.7

286

.615

2.1

1.7

41

1.4

AA

SC 1

00B

373.

210

4.2

3.2

14.9

351

.811

6.5

2.7

21

4.0

323.

91

33.7

2.21

12.9

304

.114

6.0

1.9

21

2.1

293

.815

2.2

1.7

81

1.7

AA

SC 1

10B

420.

612

1.4

3.1

416

.840

1.2

138.

02

.66

16.0

375

.216

1.8

2.1

515

.03

56.1

179.

91

.85

14.

23

46.1

189.

81

.71

13.

8

AA

SC 1

20B

448.

712

9.7

3.1

517

.943

2.5

149.

92

.66

17.2

409

.717

9.3

2.1

416

.33

92.5

202.

01

.83

15.

63

83.2

214.

41

.69

15.

3

AA

SC 1

30B

487.

413

9.2

3.1

319

.447

0.5

160.

52

.65

18.8

446

.919

1.8

2.1

417

.84

28.9

216.

11

.84

17.

14

19.2

229.

21

.716

.7

AA

SC 1

40B

525.

915

1.7

3.1

22

150

617

4.9

2.6

420

.24

78.1

208

.42.

1219

.14

57.0

234.

11

.82

18.

24

45.7

248.

01

.68

17.

8

AA

SC 1

50B

583.

316

9.1

3.1

423

.355

0.3

188.

72

.68

21.9

507

.121

6.6

2.1

720

.24

76.1

237.

71

.87

19.

04

59.9

249.

01

.73

18.

3

AA

SC 1

70B

658.

719

3.2

3.0

826

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3.9

223.

02

.625

.359

9.0

266

.12.

0923

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72.7

299.

41

.79

22.

85

58.6

317.

41

.65

22.

3

AA

SC 1

85B

709.

921

4.2

3.0

228

.368

2.6

247.

72

.54

27.2

644

.229

6.2

2.0

325

.76

15.1

333.

71

.73

24.

55

99.6

354.

01

.623

.9

AA

SC 2

00B

777.

022

5.1

3.1

631

.074

7.5

259 .

92

.66

29.8

706

.131

0.4

2.1

328

.26

74.7

349.

61

.82

26.

96

57.6

370.

71

.68

26.

2

AA

SC 2

15B

816.

323

4.9

3.1

432

.678

5.4

271.

12

.65

31.3

742

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3.6

2.1

329

.67

09.2

364.

01

.82

28.

36

91.7

385.

91

.68

27.

6

AA

SC 2

40B

940.

025

1.4

3.4

37.5

886

.127

9.6

2.9

13

5.3

816.

03

19.6

2.37

32.5

766

.035

0.0

2.0

43

0.5

739

.936

6.3

1.8

92

9.5

AA

SC 2

55B

1005

.728

0.6

3.1

64

0.1

946

.731

2.8

2.7

37.8

870.

03

58.3

2.2

34.

78

15.2

392.

91

.89

32.

57

86.6

411.

41

.75

31.

4

AA

SC 2

75B

1083

.529

0.9

3.3

43.2

1022

.432

3.9

2.8

340

.894

2.6

370

.82.

3137

.688

5.3

406

.51.

9935

.385

5.5

425

.71.

8534

.1

AA

SC 3

00B

1173

.531

4.1

3.3

34

6.8

1108

.835

0.3

2.8

644

.21

024.

44

01.3

2.33

40.8

963.

84

39.9

2.02

38.4

932

.246

0.6

1.8

73

7.2

AA

SC 3

15B

1223

.833

93

.25

48.8

1180

.239

1.3

2.7

54

7.1

111

9.1

467

.32

.22

44.6

107

2.8

526

.01

.942

.810

4855

7.7

1.76

41.8

AA

SC 3

30B

1277

.63

61.1

3.2

50.

91

231

417

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7149

.111

65.8

497.

62

.18

46.

51

116.

65

59.6

1.87

44.5

1090

.359

3.1

1.7

34

3.5

AA

SC 3

50B

1354

.940

4.0

3.0

75

4.0

1276

.345

1.5

2.61

50.9

117

3.4

518

.32.

1146

.810

99.4

568.

71

.81

43.

81

060.

85

95.7

1.67

42.3

AA

SC 3

70B

1419

.842

8.3

3.0

55

6.6

1365

.349

5.4

2.5

654

.41

288.

35

92.5

2.04

51.4

1230

.266

7.5

1.7

44

9.1

119

9.1

708

.11.

6147

.8

AA

SC 4

05B

1561

.944

1.3

3.2

36

2.3

1504

.250

8.9

2.7

360

.01

422.

96

07.6

2.19

56.7

1361

.368

4.1

1.8

75

4.3

132

8.3

725

.71.

7353

.0

AA

SC 4

45B

1698

.448

0 .6

3.2

56

7.7

1636

.155

52

.74

65.

215

4966

2.2

2.2

61.8

1483

.274

4.7

1.8

95

9.1

144

8.1

789

.21

.74

57.

7


21

ELECTRICAL DATACR

ANKC

ASE

HEAT

ER

Tota

lW

atts

Volts

Tota

lA

mps

CB

(Qty

.)FC

ATo

tal

kWFL

A(e

ach)

Qty

.C

BPo

les

LRA

(eac

h)R

LA(e

ach)

Qty

.C

BPo

les

LRA

(eac

h)R

LA(e

ach)

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

380/

415-

3-50

AA

SC05

5B

AA

SC06

0B

AA

SC07

0B

AA

SC07

5B

AA

SC09

0B

AA

SC10

0B

AA

SC11

0B

AA

SC12

0B

AA

SC13

0B

AA

SC14

0B

AA

SC15

0B

AA

SC17

0B

AA

SC18

5B

AA

SC20

0B

AA

SC21

5B

AA

SC24

0B

AA

SC25

5B

AA

SC27

5B

AA

SC30

0B

AA

SC31

5B

AA

SC33

0B

AA

SC35

0B

AA

SC37

0B

AA

SC40

5B

AA

SC44

5B

UN

ITSI

ZE

SUPP

LY V

OLT

AG

EC

OM

PRES

SOR

TYP

E-1

CO

MPR

ESSO

R T

YPE-

2C

ON

DEN

SER

FA

N M

OTO

RS

MO

CP

MC

AM

ax.

Min

.N

omin

al(V

-Ph-

Hz)

342

342

342

342

342

342

342

342

342

342

342

342

342

342

342

342

342

342

342

342

342

342

342

342

342

457

457

457

457

457

457

457

457

457

457

457

457

457

457

457

457

457

457

457

457

457

457

457

457

457

132

225

19

2.4

507

37

42

--

--

--

44

.28.

41

6.8

223

03

001.

30PW

148

252

110

4.7

507

384

2-

--

--

-4

4.2

8.4

16.

82

230

300

1.30

PW

167

287

112

0.1

663

396

2-

--

--

-4

4.2

8.4

16.

82

230

300

1.30

PW

184

317

113

3.4

407

310

02

--

--

--

44

.28.

41

6.8

223

03

001.

30SD

199

276

27

7.3

350

36

24

--

--

--

64

.212

.625

.23

230

600

2.6

1P

W

218

304

28

5.8

507

36

94

--

--

--

64

.212

.625

.23

230

600

2.6

1P

W

242

343

110

1.5

507

38

12

18

9.6

507

37

22

64

.212

.625

.23

230

600

2.61

PW

269

374

210

4.7

507

384

4-

--

--

-8

4.2

16.8

33.6

423

060

02

.61

PW

295

415

112

0.1

663

396

21

111.

266

33

892

84.

21

6.8

33.

64

230

600

2.61

PW

304

424

212

0.1

663

396

4-

--

--

-8

4.2

16.8

33.6

423

060

02.

61PW

342

476

213

3.4

407

31

004

--

--

--

104.

221

.042

.05

230

600

2.61

SD

382

533

215

1.1

407

31

134

--

--

--

104.

221

.042

.05

230

600

2.61

SD

416

582

21

66.2

443

31

254

--

--

--

104

.221

.042

.05

230

600

2.61

SD

454

633

21

79.4

443

31

354

--

--

--

124

.225

.250

.46

230

600

2.61

SD

475

664

218

8.7

443

31

424

--

--

--

124.

225

.250

.46

230

600

2.6

1S

D

509

643

31

33.4

407

310

06

--

--

--

184

.237

.875

.69

230

900

3.91

SD

552

699

31

46.7

443

31

106

--

--

--

184

.237

.875

.69

230

900

3.91

SD

590

748

31

58.3

443

31

196

--

--

--

184

.237

.875

.69

230

900

3.91

SD

617

784

31

66.6

443

312

56

--

--

--

184

.237

.875

.69

230

900

3.9

1S

D

659

838

31

79.4

443

31

356

--

--

--

184

.237

.875

.69

230

900

3.91

SD

689

878

31

88.7

443

31

426

--

--

--

184

.237

.875

.69

230

900

3.91

SD

757

915

41

58.3

443

311

98

--

--

--

204

.242

.084

.01

02

3012

005.

22SD

790

957

41

66.2

443

31

258

--

--

--

204

.242

.084

.01

02

3012

005.

22SD

863

1043

417

9.4

443

313

58

--

--

--

244

.250

.41

00.8

12

230

1200

5.22

SD

903

1091

418

8.7

443

314

28

--

--

--

244

.250

.41

00.8

12

230

1200

5.22

SD

Qty

.

COM

P.ST

AR-

TER

Qty

.M

TAC

BQ

ty.

MTA

CB

NO

TES:

1.C

usto

mer

to

spec

ify t

he e

xact

nom

inal

pow

er s

uppl

y av

aila

ble

at s

ite s

o th

at e

lect

rical

com

pone

nts

are

sele

cted

acc

urat

ely,

fai

ling

to d

o so

will

aff

ect

unit

perf

orm

ance

& t

erm

s of

war

rant

y.

2.M

ain

pow

er m

ust

be s

uppl

ied

from

a s

ingl

e fie

ld s

uppl

ied

and

mou

nted

fuse

d di

scon

nect

s,

usin

g du

al e

lem

ent

time

dela

y fu

se o

r ci

rcui

t br

eake

r.

3.Th

e m

axim

um in

com

ing

wire

siz

e is

500

MC

M.

On

units

hav

ing

MC

A g

reat

er t

han

500

MC

M w

ire, t

he fa

ctor

y su

pplie

d po

wer

ter

min

al b

lock

will

acc

ept

two

or m

ore

para

llel

field

wire

s pe

r po

le p

hase

.

4.Th

e co

mpr

esso

r cr

ankc

ase

heat

ers

mus

t be

ene

rgiz

ed f

or 1

2 ho

urs

befo

re t

he u

nit i

s in

itial

ly s

tart

ed o

r af

ter

a pr

olon

ged

pow

er d

isco

nnec

tion.

5.U

nder

com

pres

sor

type

1 a

re t

he b

ig c

ompr

esso

rs

and

type

2 a

re t

he s

mal

l co

mpr

esso

rs.

6.A

ll fie

ld w

iring

mus

t be

in a

ccor

danc

e w

ith N

EC

and

loca

l st

anda

rds

.

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.Th

e ±

10%

vol

tage

var

iatio

n fr

om th

e no

min

al is

allo

wed

for

a s

hort

tim

e on

ly, n

ot p

erm

anen

t.

9.RL

A v

alue

s ar

e ba

sed

on n

omin

al c

ondi

tions

.

LEG

END

:M

CA

-M

inim

um C

ircui

t A

mpa

city

per

NEC

43

0-24

MO

CP

-M

axim

um O

ver

Cur

rent

Pro

tect

ion

RLA

-R

ated

Loa

d A

mps

LRA

-L

ocke

d Ro

tor

Am

ps

CB

-C

ircui

t Bre

aker

MTA

-M

ust

Trip

Am

ps

FLA

-F

ull L

oad

Am

ps

FCA

-F

an C

ircui

t A

mps

PW-

Par

t W

indi

ng S

tart

Com

pres

sor

SD-

Sta

r D

elta

Sta

rt C

ompr

esso

r (o

pen

type

)

kW-

Kilo

Wat

t


22

WATER SIDE PRESSURE DROP

11

109

8765421 3

PRES

SUR

E D

RO

P (F

T. O

F W

ATE

R)

1

10 20

23

48

06

601

97

35

005

0240

7010

090

8020

0

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

CURVE No. Maximum GPM MODEL No.AASC055BAASC060BAASC070B

AASC075BAASC090BAASC100BAASC110B

AASC120B

AASC130B

AASC140B

AASC150B

AASC170B

AASC185B

112

2345

5

6

6

7

8

8

151161182

206236267297

313

340

369

417

462

498

Minimum GPM91

106119

120166169199

223

246

258

265

325

350

CONVERSION FACTOR: GPM = 0.063 Liters per second . F eet of water = 2.989 Kilo Pascal (kpa) .

CURVE No. Maximum GPM MODEL No.AASC200 BAASC215 BAASC240 B

AASC255 BAASC275 BAASC300 BAASC315 B

AASC330 B

AASC350 B

AASC370 B

AASC405 B

AASC445 B

545572674

722776838855

894

970

996

109 4

118 8

Minimum GPM378397422

451491528604

631

614

701

762

842

889

9101111

11

8

8

8

8

NOTES:

1. If an application requires certain water fl ow rate outside these limits, please check with your nearest dealer/sales offi ce. 2. If the chiller has 2 evaporators, then the total water fl ow rate must be divided by 2 while applying the above curves.


23

DIMENSIONS

NOTE: 1. Cooler dimensions are subject to chenge without notice. Final dimensions will be provided upon order placement. 2. All dimensions are in mm, unless otherwise specified.

AASC055B, AASC060B, AASC070B & AASC075B

AASC090B, AASC100B & AASC110B

MODEL A B

AASC055B - AASC070B 2260 360

AASC075B 3124 800

DIMENSIONS


2486

24

DIMENSIONS



MODEL A B C

AASC120B 2486 940 342

AASC130B - AASC140B 2450 960 372

DIMENSIONS

MODEL A B C

AASC150B - AASC170B 2450 1880 372

AASC185B 2360 190 0 412

DIMENSIONS



2486

25

DIMENSIONS


AA

SC20

0B &

AA

SC21

5B

MO

DEL

A

AA

SC20

0B

231

5

AA

SC21

5B24

65

DIM

ENSI

ON

S


443

2412

26

DIMENSIONS


AA

SC24

0B, A

ASC

255B

, AA

SC27

5B, A

ASC

300B

, AA

SC31

5B &

AA

SC33

0B

D


MO

DEL

A

AC

B

AA

SC24

0B

- A

ASC

255B

2412

2360

AA

SC27

5B

- A

ASC

300B

2360

451

AA

SC31

5B

- A

ASC

330B

2360

451

DIM

ENSI

ON

S

CD

1900

2315

1900

2315

4350

2763

27

DIMENSIONS


AA

SC35

0B &

AA

SC37

0B


28

DIMENSIONS


AA

SC40

5B &

AA

SC44

5B


2412

2412

1931

3507

29

TYPICAL SCHEMATIC WIRING DIAGRAM

NOTE: 1. Refer to page 31 for legend, notes & wiring diagram of optional items. 2. Refer to unit control box (inside panel) for exact wiring diagram.

DIGITALANALOG

+5 GND SI

COMP1 PROOF

UL3 - 2W

** SEE EEVB CONNECTIONDETAILS

Communications to SB1 (MCS-SI16)

(EEV SPORLAN)** EEV DRIVER 2

(EEV SPORLAN)** EEV DRIVER 1

MCS-1B6

MCS-1B6

EEVB2

EEVB1

+ - GND

+ - GND

Termination

+ - GND

BLACK

ETHERNET

RS232

USER INTERFACEBOARD (UIB)

230VAC

230 VAC

PO

WER

IN

TerminationWHITE

RELAY M-10

GND Vout5B

5A2A

2B

GND Vout

POWER SUPPLY

2230Vac -1PH - 50/60Hz

1

14B

COMP2 SOLENOIDPOWER DECREASE

FLOW SWITCH

EMER STOP

EXENSTART/STOP

EMER STOP

UVMUVR

CWP *FLS 10

RWT26A

27A

HPS1OLR1

LWT

COMP CB

25A

+5 GND SI+5 GND SI

RELAY M-9

11AA

+5 GND SI

2G

WA

+5 GND SI

G

RELAY M-8

ANALOGDIGITAL

211A

11A

211AA

+5 GND SI

CONTACTOR

UL4 - 215B POWER INCREASE

COMP2 SOLENOID

LIQ LINE 2 SOL

2nd CONTACTOR

DELTA & WYE OR

COMPRESSOR 2

RELAY M-6

RELAY M-7

ANALOGDIGITAL

+5 GND SI

BLACKSHIELDWHITE

DIGITALANALOG

+5 GND SI

RELAY M-5ANALOGDIGITAL

ANALOGDIGITAL

+5 GND SI+5 GND SI

WHITE

BLACKSHIELD

CC2

LLS 212B

SOLENOID

COMPRESSOR 21st CONTACTOR

HOT GAS BY PASS

UL3 - 114A POWER DECREASE

COMP1 SOLENOID

COMP1 AMP

SSPS1SSPS1

DISCH1 TEMP

SUCT1 TEMP22A

C1

23A

D1

SUCT1 PRESS

DISCH1 PRESS

29A

30A

28A

31A

JUMPER 1

COMPRESSOR 11st CONTACTOR

+5 GND SI

RELAY M-4

DIGITALANALOG

DIGITALANALOG8AA

8A

+5 GND SI

RELAY M-3

RELAY M-2

DIGITALANALOG

+5 GND SI

SHIELD

BLACK

WHITE

BLACK

DIGITALANALOG

WHITESHIELD

+5 GND SI

OR

UL4 - 115A

DELTA & WYE CONTACTOR

POWER INCREASECOMP1 SOLENOID

LLS 112A

2nd CONTACTORCOMPRESSOR 1

LIQ LINE 1 SOL

MB

RELAY M-1DIGITALANALOG

BLCK/SHIELD

RED

RED

WHITEBLCK/SHIELD

+5 G ND SI

WHITE

+5 GND SI

DIGITALANALOG

COM NO NC

(MCS-MAGNUM)

6A

CC116

7AGEN ALARM

GND Vout GND Vout

COM NO NCCOM NO NC

COM NO NCCOM NO NC

COM NO NCCOM NO NC

230 VAC


30


+5 GND SI

SHIELDBLACK

WHITE

WHITE

CB

DB

+5 GND SI

+5 GN D SI+5 GND SI

AN ALOGDIGITAL

DIGITAL

ANALOGDIGITAL

DIGITALANALOG

ANALOG

+5 GND SI+5 GND SI

ANALOGDIGITAL

DIGITALANALOG

ANALOGDIGITAL

DIGITALANALOG

SB1RED +5 GND SI

+5 GND SI

WHITE

REDBLCK/SHIELD

WHITE

BLACK

31B

30B

29B

22BSHIELD

BLCK/SHIELD

28B +5 GND SI+5 GND SI

ANALOGDIGITAL

DIGITALANALOG

ANALOGDIGITAL

ANALOGDIGITAL

(MCS-SI16-230)

LIQUID

SOLENOIDINJECTION 2

230 VAC

PO

WER

IN

Termination2

ANALOGDIGITAL

DIGITALANALOG

1

230VAC

DISCH2 PRESS

SUCT2 TEMP

DISCH2 TEMP

SSPS2

COMP2 AMP

COMP CBCOMP2 PROOF

SUCT2 PRESS

ANALOGDIGI TAL

DIGITA L

+5 GND SI

ANALOG

23B

+5 GND SI+5 GN D SI

8BSSPS2

+5 GND SI

8BB

+5 GND SI

+5 GND SI

HPS2OLR2

LI 1LIQUID

SOLENOIDINJECTION 1

(MCS-RO8-230)SB2

20A

RELAY 1-1

COM NO NC

RELAY 1-5

COM NO NC

20B

+ - GND

Communications to SB2 (MCS-RO8)

BLACKWHITE

Communications to MB (MCS-MAGNUM)

FMC6

FMC7

FMC8

FMC10

FMC9

SETTING TEMP = 36degF

EXTERNAL DEVICE

RELAY M-6

MB (MCS-MAGNUM)

HTR1 SB1(MCS-SI13-230)

102B

103B

+5 GND SI

DIGITALAN ALOG

HGBPHOT GAS BY PASSSOLENOID

15 MB (MCS-MAGNUM)

102A

103A

+5 GND SI

DIGITALANALOG

FMC2

FMC1

FMC4

FMC3

FMC5

Communications to SB1 (MCS-SI16)

FAN 9

FAN 1

FAN 3

FAN 7

FAN 5

RELAY 1-8RELAY 1-4

WHITE

BLACK

Termination

+ - GN D

TK1110 21A

COM NO NC

1

230VAC

2

230 VAC

PO

WER

IN

POWER SUPPLY230Vac -1PH - 50/60Hz

21B

COM NO NC

111TK2

RELAY 1-3

19ATK7116

118 TK9

COM NO NC

18A

TK3

TK5114

112

COM NO NC

RELAY 1-2

RELAY 1-7

19B

COM NO NC

117TK8

119TK10

COM NO NC

RELAY 1-6

115

113TK4

TK618B

FAN 10

FAN 2

FAN 4

FAN 8

FAN 6

POWER SUPPLY230Vac -1PH - 50/60Hz

LI 2

CT1

230 VAC

COMP AMP1

CT2COMP AMP2230 VAC

HEATER TAPE

COM NO NC

NOTE: 1. Refer to next page for legend, notes & wiring diagram of optional items. 2. Refer to unit control box (inside panel) for exact wiring diagram.


31


12B

SB1(MCS-SI13-230)

CB4A-1

OLR2A-1

CB2A-122B

10BHPS2

COMP CB

OLR2HPS2

COMP2 PROOF

+5 GND SI

ANALOGDIGITAL

ANALOGDIGITAL

+5 GND SI

COMP2 FM

COMP2

FAN7FAN8

CONTROL PANEL FAN5FAN6

FAN1FAN2 FAN4

FAN3

COMP1 FM

CONTROL PANEL

COMP1

CCA3-1ACB1A-1 +5 GND SI

22A

10A

22B

10B

CB2A-1

HPS2HPS2OLR2

COMP CBCOMP2 PROOF

HPS1HPS1OLR1

COMP1 PROOFCOMP CB

DIGITALDIGITAL

ANALOG

+5 GND SI

OLR2A-1

CCA4-1A110B

110BB

11B

9BB

ANALOG

+5 GND SI

DIGITAL

SB1(MCS-SI13-230)

DIGITAL

110A

+5 GND SI

ANALOG

OLR1A-1

9AA

11A

110AA

ANALOG

CC3A-2

CC5A-2

CC6A-2

CC4A-2

RELAY M-8

12B

RELAY M-3

MB (MCS-MAGNUM)

61BCC4

62BCC6

CC5

61ACC3

62A

12AMB (MCS-MAGNUM)

2

110B23BCCA4-1A

9B11B

9BB

OLR4A-1110BB

CC2A-1

OLR1A-1

CB3A-1CB1A-122A

10AHPS1

HPS1OLR1

COMP CBCOMP1 PROOF

RELAY M-8

CCA3-1A

DIGITALANALOG

+5 GND SI

DIGITALANALOG

+5 GND SI

23A

9A11AOLR3A-1

110A

110AA

9AA

MB (MCS-MAGNUM)

61BCC4

CC1A-1

12A

RELAY M-3

MB (MCS-MAGNUM)2

CC361A

230 VAC

2nd CCFOR COMP #1

COM NO NC

230 VAC

2nd CCFOR COMP #2

COM NO NC

WYE CCFOR COMP #1

FOR COMP #1DELTA CC

WYE CCFOR COMP #2

FOR COMP #2DELTA CC

230 VAC

COM NO NCCOM NO NC

230 VAC

LEGEND

CB CIRCUIT BREAKER

COM P C OMPRESSOR

CC COMPRESSOR CONTACTO R

CC A C OMPRESSOR CONTACTOR AUXILIARY

CWP CHILLED WATER PUMP

DISC H D ISCHARG E

ETB EARTH TERMINAL BLOCK

EE V E LECTRONIC EXPANSIOV VALV E

EEVB ELECTRONIC EXPANSIOV VALVE BOAR D

EXEN REMOTE ENABLE/DISABLE

F F US E

FL S F LOW SWITCH

FM FAN MOTOR

FMC FAN MOTOR CONTACTO R

GND ELECTRICAL GROUNDING

HPS HIGH PRESSURE SWITCH

HGBS HOT GAS BYPASS SOLENOID

HTR COMPRESSOR CRANKCASE HEATER

HVTB HIGH VOLTAGE TERMINAL BLOCK

HZ HERTZ (ELECTRICAL FREQUENCY)

L... LINE (ELECTRICAL POWER LINE/PHASE )

LI LIQUID INJECTION SOLENOID

LLS LIQUID LINE SOLENOID

LW T L EAVING WATER TEMPERATUREMB MASTER BOARDMC S MICROPROCESSOR CONTROL SYSTE MNTB NEUTRAL TERMINAL BLOC KOLR OVER LOAD RELAY

PT PRESSURE TRANSDUCER

PH PHASE (ELECTRICAL PHASE)

RWT RETURN WATER TEMPERATUR E

SB SLAVE BOAR D

S1 CONTROL SWITCH

SSP S S OLID STATE PROTECTION SYSTEM

SUCT SUCTIO NTK FAN MOTOR THERMAL CONTAC TTRANS TRANSFORMERTS TEMPERATURE SENSOR

UL UNLOADERUVM UNDER VOLTAGE MONITO R

UVR UNDER VOLTAGE RELA YTERMINAL BLOCK OR TERMINATION POIN T

- - - - - FIELD WIRING

* FIELD SUPPL Y

TERMINATION JUMPER IS CLOSED

TERMINATION JUMPER IS OPEN

NOTES1. POWER SUPPLY, 380/415V-3Ph-50Hz .

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 CRANKCAS EHEATER FOR MINIMUM OF 12 HOURS PRIOR TOSYSTEM START UP .IF POWER IS OFF 6 HOURS OR MORE, CRANKCASEHEATER MUST BE ON FOR 12 HOURS BEFOR EOPERATING THE SYSTEM .

FAILURE TO FOLLOW THESE INSTRUCTIONS MAYRESULT IN COMPRESSOR DAMAGE.

6. MARK THE BOX AT THE UPPER RIGHT CORNER OFTHE RESPECTIVE OPTIONAL ITEM, IF THE OPTIONA LITEM IS INCLUDED IN THE UNIT .


32


SEQUENCE OF OPERATIONFor Initial start up of the unit, the following conditions must be met:

1. Power to the unit shall be continuously energized for 12 hours minimum.

2. Control power has been accomplished and the display shows no alarm.

3. All safety conditions are satisfied.

4. Chilled water pump is running normal and chilled water flow switch contact is closed.

5. Customer control or remote on/off is switched to run mode, if any.

Staging ON and OFF sequence is accomplished based on the controlled water temperature. Using the stepless compressor capacity control (called slider), the controller will drive the slider to maintain the required demand as constant as possible.

COMPRESSOR STAGE – ON SEQUENCEStage-1:

If the controlled water temperature is above the water temperature set point the fi rst compressor or the compressor with less running hours will start by unloading for certain second. A� erwards, slider will move then to part load or to full capacity of the compressor depends upon the required load demand of the unit.

As the discharge pressure of the running compressor rises, the corresponding fan will turn ON accordingly to its fan stage – ON set point. If the discharge falls below the fan stage – OFF set point value, the corresponding fan then will turn OFF.

Stage-2:

A� er such time delay. If the controlled water temperature is still above from the water temperature set point. The 2nd

compressor or the next less running hours compressor will start by unloading for certain time. Then the slider will move to part load or to full capacity of the compressor depends upon on the load demand of the unit.

As the discharge pressure of the 2nd compressor rises, the corresponding fan at the 2nd circuit will turn ON accordingly to its fan stage – ON set point. If the discharge falls below the fan stage – OFF set point value, the corresponding fan then will turn OFF.

For the unit with more than two refrigerant circuits, all compressor staging will be the same as illustrated above. For the unit with one circuit, the staging will based from the part load to the full capacity of the compressor.

COMPRESSOR STAGE – OFF SEQUENCEDuring the staging OFF, the FIFO (First-In First-Out) sequence is adopted as standard. If the compressor equalization is not activated the LIFO (Last-In First-Out) then will be adopted.

As the demand load decreases and when the water temperature falls below the water temperature set point. The fi rst compressor or the compressor with most running hours will then start unloading. If the water temperature continuously falls below the set point the fi rst compressor then will turn OFF.

If the water temperature still below the set point the next compressor with most running hours will start unloading, then OFF.


33


The controller consists of the following hardware:

1. User Interface Board (UIB): the display board – LCD with user friendly control push buttons. 2. Main Board Controller: Equipped with advanced logic to safely operate the chiller and run at its most efficiency. 3. Auxiliary Board Controller: Only when applicable, this serves as an extension of analog and digital I/O’s.4. Electronic Expansion Valve Board: Communicate with the Main Board to control the electronic expansion valve at its

high efficient and performance.5. Sensors: The devices that feeding inputs to the controller.

Display Information:

Easily accessible measurements for unit and each circuit include the following:

1. Circuit suction and discharge pressure 2. Circuit suction and discharge temperature 3. Leaving and return water temperature4. Compressor amps percentage 5. Compressor status 6. Compressor drawn Ampere 7. Fan status8. Solenoid status 9. Expansion Valve status 10. Circuit Suction and Discharge Superheat value 11. Current Unit Cooling Capacity Status 12. Current Circuit Cooling Capacity Status 13. Ambient Temperature (optional) 14. Lockouts and 60 History of Alarms 15. Target temperature set point 16. Sensor input/output set up 17. Real Time Graphical Display 18. Analog and Digital Input/output Status 19. Circuit Suction and Discharge Saturated Value 20. Unit Cooling and Expansion Valve Rate of Change

System Protection:

The following system protection is provided to insure system reliability:

Chiller Unit Standard Lockouts:

1. Freeze Protection 2. No Water Flow Protection3. Phase Loss Protection 4. Over and Under Voltage Protection 5. Serial Communication Error

Compressor Circuit Safeties and Lockouts:

1. Compressor Motor Winding Overheating 2. Low Suction Pressure 3. High and Low Discharge Pressure 4. High Discharge Temperature5. High and Low Motor amps 6. Sensors Error 7. Anti recycle time delay for compressor


34


Microprocessor Control System (MCS) Main Feature provides the following:

1. A special software was been developed for air cooled chiller application with screw compressors.2. Compressor Lead / Lag operation. This is to balance the run hours operation of every compressor in the chiller unit.3. The user interface board is having 9 user friendly push buttons with simple identification for easy accessing the data

and information from the display.4. The controller is equipped with self diagnostic functions. That in case of any errors, it will give an alarm and shut off

only the affected circuit or the whole unit if necessary. The full description of the alarm/error is visible in the display.5. A special control zone based on the Leaving or Return Water Temperature that leads the compressor function to

maintain the unit capacity at its target set point.6. A flexible authorization levels is available. This is to maximize the security on the control system.7. Thru Volt free contact, the chiller unit can be remotely enable/disabled.8. Energy efficient compressor staging for multi screw compressor chiller unit. This provides the user with additional

capabilities in fine tuning the efficiency of the screw compressor.9. Adaptive capacity control where the controller takes the necessary corrective action when reached at critical status

of temperature or pressure in the circuit prior to a safety being tripped.10. Compressor ampere is monitored continuously by the controller, for safety operation and its properly locates the

position of the compressor slider.11. BMS protocol like Bacnet, Modbus, Johnson Control and Lonworks are available, it can configure from the controller

set up menu and can be connected thru its available port in the controller board.12. A windows based program (MCS-Connect) was installed to monitor and access all data at the microprocessor using

a windows based computer for easy servicing.13. In an occurrence of lockouts/alarm, the last reading of every sensors are logged in the microprocessor and it can be

viewed using the UIB or a PC.14. Seven days operating schedule plus holidays can be encoded or programmed to the controller to ON and OFF the

chiller unit accordingly.15. Components are UL approved as standard.16. The controller automatically performs a 144 data logging of all I/Os signal and saved it into the microprocessor; this

logged data can be presented using its built in graphing function.

BMS Interfacing (optional):

A standard on board RS-485 port is provided for interfacing with building management system as well as to communicate both locally and remotely. For more interfacing connectivity also a RS-232 and Ethernet port was provided as standard. The controller can be interfaced to diff erent protocol like Bacnet, Modbus, Johnson Control and Lonworks.

Controller network can support 20 Main Boards and its associated inputs/outputs using the RS-232 or RS-485 connection. Note that RS-232 transmissions should not exceed 50 feet in length and for RS-485 transmission should not exceed 1 mile.

Part of the BMS features. Is the MCS-Connect, this is a PC- support so� ware that was available at the controller. With this features, all the points of each individual refrigerant circuits and unit status, alarms, set points, analog and digital inputs / outputs can be viewed. Also the controller confi guration on the chiller unit can be easily done using a local or remote PC.

PC minimum system requirements to run the program:

Windows 2000; Pentium 1.0 MHz or Faster; 40 GB Hard drive; 256 RAM; 56k Modem & VGA display capable for 256 color.

MCS also provides the Volt free contact connection for BMS:

1. Remote Unit Run and Stop Enable – remotely enable/disable the chiller unit thru volt free contact from the field.2. General Alarm – a volt free contact from the controller that closes when a chiller unit indicates a problem.3. Emergency Stop – a volt free contact when closes from remote it enable the chiller unit to immediately shut down in

case of emergency situation.4. Compressor Run Status – This is a relay output closure from the controller board to the BMS indicating the compressor is running.5. Chiller Water Reset – An analog input (0 to 5 V) supplied to the board from the BMS. A reading of 2.5V will result in a

zero adjustment. A reading of less than 2.5V will result for a negative adjustment, and a greater then 2.5V will result in a positive adjustment.


35

APPLICATION GUIDELINES

INTRODUCTION

These guidelines should be considered when designing systems and their installation utilizing GE AASC series liquid chillers. Stable operation, performance and reliability of units is off en dependent upon proper compliance with these recommendations. When any application varies from these guidelines, it should be referred with GE Air Conditioners for specifi c recommendations.

UNIT SELECTION/SIZING

Unit selection procedure and capacities are provided in this catalog for proper selection. The GE electronic selection program 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 future expansions is not recommended. Over sizing adversely aff ects the operating effi ciency due to erratic system operation and excessive compressor cycling which also results in reduced compressor life. It should be noted that, units operate more effi ciently when fully loaded rather than larger equipment operating at partial capacities. In addition, an oversized unit 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 demand due to expansion. Further, it is also recommended that installing two chillers instead of a single chiller be considered in applications 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 REQUIREMENT

The tabulated performance data provided in this catalog are based on a fouling factor of 0.00010 hr-ft2 -°F/Btu (0.000018 m2 -°C/W). As fouling factor is increased, unit capacity decreases and power input increases. For unit selection at other fouling factors, apply appropriate 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 may result in scale and deposit formation causing reduced cooler effi ciency or heat transfer and corrosion or pitting leading to possible equipment damage. The more scale forming material and suspended solids in the system water, the greater the chances of scale and deposit formation and fouling. These include calcium, magnesium, biological growth (algae, fungi and bacteria), dirt, silt, clays, organic contaminants (oils), silica, etc. which should be kept to the minimum to retard scale and deposit formation. In order to prevent corrosion and pitting, the pH value of the water fl owing through the cooler must be kept between 7 and 8.5. GE recommends that a water treatment specialist is consulted to provide and maintain water treatment, this is particularly critical with glycol systems.

EFFECT OF ALTITUDE ON UNIT CAPACITY

The tabulated performance data provided in this catalog are for use at or near sea level altitude application. At altitudes substantially above sea level, the decreased air density will reduce condenser capacity and therefore unit capacity. For unit selection at these higher altitudes, apply appropriate correction factor from the table provided in this catalog.

HIGH AMBIENT CONSIDERATION

These chillers are designed for year round operation over a range of ambient temperatures. As a standard, these chillers can start and operate satisfactorily up to 125°F (52°C) ambient temperature at rated nominal voltage.

WATER FLOW RATES AND COOLER PRESSURE DROP

The maximum and minimum water fl ow rates for all unit models and the pressure drop chart are provided in this catalog. The design water fl ow rate must be within this range. Design fl ow rates below the minimum limits will result in laminar fl ow causing freeze-up problems, stratifi cation and poor control and fl ow rates beyond the maximum limits cause excessive pressure drop and severe tube erosion.

During unit operation, water fl ow rate must not vary more than ± 5% from the design fl ow rate. The water fl ow switch should be calibrated accordingly. The piping and pumping layout should be right for the application and must assure proper water return and circulation. When using glycol solution, fl ow rate and pressure drop are higher than with water, therefore care must be taken not to exceed the limits. In such applications, consult GE Air Conditioners for specifi c recommendations.


36


Load200 TR

200 TRChiller

54.6°F500 GPM

45°F500 GPM

45°F240 GPM

65°F240 GPM

45°F260 GPM

Load120 TR

120 TRChiller

45°F340 GPM

80°F109.8 GPM

45°F257.8 GPM

80°F82.2 GPM

53.4°F340 GPM

80°F192 GPM

65°F192 GPM

53.4°F340 GPM

45°F82.2 GPM

COOLER FLUID (WATER OR GLYCOL) TEMPERATURES RANGE

Unit can start and pull down from 95°F (35°C) entering fl uid temperature. The design leaving chilled fl uid temperature (LCWT) range as mentioned earlier in the tabulated performance data is 40 to 50°F. The design entering chilled fl uid temperature range is 50 to 60°F. The design cooler temperature drop (ΔT) range is 5 to 15°F.

The tabulated performance data provided in this catalog is based on a chilled water temperature drop of 10°F. Units may be operated at any desired temperature drop within the range of 5 to 15°F as long as the temperature and fl ow limits are not violated and appropriate correction factors are applied on the capacity and power input. The GE electronic selection program can be very handy in selecting equipment at diff erent temperature drops.

It should be noted that temperature drop outside the aforesaid range is not permitted as it is beyond the optimum range of control and could adversely aff ect the functioning of microprocessor controller and may also prove to be detrimental for the equipment.

FLOW RATES AND/OR WATER TEMPERATURES OUT OF RANGE

Certain applications (particularly process cooling jobs) call for fl ow rates and/or water temperatures that are outside the above mentioned limits/range. Our chillers can be utilized for these applications by selecting the chiller based on the specifi c process load and making a suitable piping and mixing arrangement in order to bring the fl ow rates and/or water temperatures relevant to the chiller within acceptable limits.

Example 1:

An application requires 240 GPM of water at 45°F and the return water temperature is 65°F. A standard chiller can be used for this application as shown in the following basic schematic layout (single mixing arrangement).

Example 2:

An application requires 192 GPM of water at 65°F and the return water temperature is 80°F. A standard chiller can be used for this application as shown in the following basic schematic layout (dual mixing arrangement).


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COOLER FREEZE PROTECTION

If the unit is located in an area where ambient temperatures fall below 32°F (0°C), cooler protection in the form of Ethylene Glycol Solution is required to protect the cooler and fl uid piping from low ambient freeze-up. This glycol solution must be added to the water system loop to bring down the freezing point of water to a diff erence of 15°F (8.3°C) below minimum operating ambient temperature.

Using this glycol solution causes a variation in unit performance, fl ow rate and pressure drop, therefore appropriate correction factors from the aforementioned table in this catalog should be applied.

MULTIPLE CHILLER ARRANGEMENT OR PLANT CONFIGURATION

A multiple chiller system has two or more chillers connected by parallel or series piping to a common distribution system. Multiple chiller arrangements off er the advantage of operational fl exibility, standby capacity and less disruptive maintenance. Also, they off er some standby capacity if repair work must be done on a chiller from a set of duty chillers. Starting in-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, standby capability is desired, large temperature drop (greater than 15°F) is desired or application calls for splitting the total capacity for better part load operation.

In designing a multiple chiller plant, units of same size should be preferred over diff erent sizes to facilitate balanced water fl ow. It is mandatory that cooler fl ow rates must be balanced to ensure proper fl ow to each chiller based on its respective capacity. As mentioned above, two basic multiple chiller systems are used: parallel and series chilled water fl ow.

In the parallel arrangement, liquid to be chilled is divided among the liquid chillers; the multiple chilled streams are combined again in a common line after chilling. Water temperatures (EWT or LWT) can be used to cycle units On and Off based on the cooling demand. Parallel arrangements permit adding chillers in the future for plant expansion with the appropriate considerations beforehand.

In the series arrangement, the chilled liquid pressure drop may be higher unless coolers with fewer liquid-side passes or baffl es are used. No over chilling by either unit is required, and compressor power consumption is lower than it is for the parallel 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 fl ow and resulting installation and operational cost savings. Series chiller arrangements can be controlled in several ways based on the water temperatures depending on cooling demand.

A valved piping bypass is suggested around each chiller to facilitate future servicing as it gives the personnel an option for service without a complete shutdown.

GE recommends the parallel arrangement for design temperature drops (ΔT) up to 15°F and the series arrangement beyond that i.e., 16 to 20°F. Complete design details on these parallel and series chilled water fl ow arrangements can be found in the ASHRAE handbooks and other design literature which should be referred by the designer in preparing his detailed designs.

PIPING ARRANGEMENTS AND PLANT LAYOUT

Our chillers are suitable for incorporating in ‘Two Pipe’ single temperature systems or ‘Four Pipe’ independent load systems. The system piping circuit (load distribution circuit) should be basically parallel piping either Direct Return or Reverse 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 and cons of cost, nature of load and confi guration of building, energy economics, fl exibility, installation requirements and others to determine the best arrangement for his project. In all cases, it must be ensured that the design water fl ow is constantly maintained through the chillers at all stages of operation. Some suggested arrangements with basic schematic layouts are as follows:


38


CHWS

CHWR

Load Load

3-WayValve

3-WayValve

Constant Speed Pump

Chiller

A. Single or multiple chillers with constant water fl ow through chillers and load system:

In this type of arrangement, constant water fl ow 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 fundamental to the design or analysis of a system.

Where multiple zones of control are required, the various load devices are controlled fi rst; then the source (chillers) system capacity is controlled to follow the capacity requirement of the loads. Control valves are commonly used to control loads. These valves control the capacity of each load by varying the amount of water fl ow through the load device. Control valves for these applications are two-way (straight-through) and three-way valves. The eff ect of either valve is to vary the amount of water fl owing through the load device. With a two-way valve, as the valve strokes from full-open to full-closed, the quantity of water fl owing through the load gradually decreases from design fl ow to no fl ow. The three-way mixing valve has the same eff ect on the load as the two way valve – as the load reduces, the quantity of water fl owing through the load decreases in proportion to the load and the diff erence 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 fl ow through the load as the load changes. The fundamental diff erence between the two-way valve and the three-way valve is that as the source or distribution system sees the load, the two-way valve provides a variable fl ow load response and the three-way valve provides a constant fl ow load response.

Referring to the foregoing schematic layout, this is a conventional system and is not as energy effi cient as the two-way valve systems especially on the pumping side due to constant water circulation in the system. On multiple chiller installations, pumps are required to operate continuously and the sequencing of chillers is dependent on water temperatures.


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Flow Sensor

CHWR

P

2-Way Valve

Load

CHWSA

B

Variable Speed Secondary Pump

SystemController

Load

2-Way Valve

Constant SpeedPrimary Pump

Chiller

B. Single or multiple chillers with constant water fl ow through chillers and variable water fl ow through load system (primary/secondary pumping arrangement):

This system is called a Primary – Secondary System and in this arrangement, the generation zone is separated from the transportation or distribution zone. In this type of arrangement also, constant water fl ow through the chillers is maintained, however the quantity of water fl owing through the load distribution pump/piping system decreases in proportion to the load and the diff erence amount is directed through a bypass pipe that connects the supply and return headers. This bypass pipe forms a ‘Hydraulic Coupling’ between the points A – B and is also called as Common Bridge or Decoupling Line. 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 diff erential pressure sensor/transmitter, maintaining the desired diff erential pressure (ΔT) across the cooling coils, their control valves and the branch piping. This pump speed is modulated within a broad range in order to reduce the pumping head and alter the water fl ow rate based on the changing load conditions.

The primary pumps are constant speed pumps and the design fl ow rate through the chillers remains constant. Each chillerpump combination operates independently from the remaining chillers and each pump is shutdown when the respective chiller is stopped. The sequencing of chillers is dependent on water fl ow. If greater fl ow is demanded than that supplied by the chiller-pumps, return water is forced through the bypass into the supply header. This fl ow indicates a need for additional chiller capacity and another chiller-pump starts. Excess bypass fl ow with reference to the set points in the system controller in the opposite direction i.e., into the return header indicates overcapacity and the chiller-pumps are turned off .

Energy is saved because the system head and water fl ow rate are reduced on the Secondary Pump when there are partial cooling loads on the system and due to cycling of Primary Pumps.

UNIT LOCATION AND INSTALLATION

These chillers are designed for outdoor installation and can be installed at ground level or on a suitable roo� op location. In order to achieve good operation, performance and trouble-free service, it is essential that the proposed installation location 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 of adequate ambient air to the condenser and removal of heated discharge air from the condenser. This is accomplished by maintaining sufficient clearances which have been specified in this Catalog around the units and avoiding obstructions in the condenser air discharge area to prevent the possibility of warm air circulation. Further, the condenser fans are 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 will cause higher condensing temperatures resulting in poor unit operation, higher power consumption and possible eventual failure of equipment.


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The unit’s longitudinal axis should be parallel to the prevailing wind direction in order to ensure a balanced air flow through the condenser coils. Consideration should also be given to the possibility of down-drafts caused by adjacent buildings, which may cause recirculation or uneven unit airflow. For locations where significant cross winds are expected, 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 and sources of airborne chemicals that could attack the condenser coils and steel parts of the unit. Avoid locations where the 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 unit by means of a protective fence. This will help to prevent the possibility of vandalism, accidental damage or possible harm 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 unit operation and maintenance. However, it is also necessary to consider access requirements based on practical considerations 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 of handling 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 upon installation of the unit which can strain the refrigerant lines resulting in leaks and may also cause compressor oil return problems. It is recommended that the concrete slab is provided with appropriate footings. The slab should not be connected 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 weight of the unit. The unit shall be mounted on a concrete slab similar to ground installations. The roof must be reinforced for supporting the individual point loads at the mounting isolator locations. It must be checked and ensured that the concrete base is perfectly horizontal and levelled, especially if the roof has been pitched to aid in water removal. It should be determined prior to installation if any special treatment is required to assure a levelled installation else it could lead to the above mentioned problems.

Vibration isolators are necessary for installing these chillers in order to minimize the transmission of vibrations. The two 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 and job 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 and vibration 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 each mount 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 this regard.

COOLER PIPING CONNECTIONS

The following pertinent guidelines are served to ensure satisfactory operation of the units. Failure to follow these recommendations may cause improper operation and loss of performance, damage to the unit and diffi culty in servicing and maintenance:

Water piping must be connected correctly to the unit i.e., water must enter from the inlet connection on the cooler and leave 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 the unit control panel using shielded cable. There should be a straight run of piping of at least five pipe diameters on either side of the flow switch. Paddle type flow switches can be obtained from GE 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 wiring diagram) so that the unit can start only upon proof of pump operation.


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Flexible connections suitably selected for the fluid and pressure involved should be provided as mandatory in order to minimize transmission of vibrations to the piping / building as some movement of the unit can be expected during normal 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 connection, 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 any variations occur in the cooler and system. When installing pressure taps to measure the amount of pressure drop across the water side of the cooler, the taps should be located in the water piping a minimum of 24 inches downstream from 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 complete drainage of the cooler and piping as well as to vent any air in the pipes. Hand shut-off valves are recommended for use in all lines to facilitate servicing.

The system water piping must be flushed thoroughly before connecting to the unit cooler. The cooler must not be exposed to flushing velocities or debris released during flushing. It is recommended that a suitably sized bypass and valve arrangement is installed to allow flushing of the piping system. The bypass can be used during maintenance to isolate 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 installations, each unit should be piped as shown:

OUT

IN

Isolating Valve - Normally Open

Isolating Valve - Normally Closed

Balancing Valve

Flow meter

Strainer

Pressure tapping

Flow Switch

Connection (�anged / Victaulic)

Pipe work

Flexible connection

Note: For chillers with two coolers, the connecting pipes for entering and leaving water on one cooler must be joined to the corresponding pipes on the other cooler before connecting to the main headers in the system piping.


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CHILLED FLUID VOLUME REQUIREMENT

The volume of water in a piping system loop is critical to the smooth and proper operation of a chilled water system. If suffi cient volume of water is not there in the system, the temperature control can be lost resulting in erratic system operation and excessive compressor cycling. Therefore, to prevent this eff ect of a ‘Short Water Loop’ ensure that total volume of water in the piping system loop equals or exceeds 3 Gallons per Nominal Ton of cooling capacity for standard air conditioning applications and 6 Gallons per Nominal Ton of cooling capacity for process cooling jobs where accuracy is vital and applications requiring operation at very low ambient temperatures and low loading conditions.

For example, chiller model AASC100B operating with a design water fl ow rate of 205 GPM for a standard air conditioning application 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 system loop 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 baffl ed to ensure that there is no stratifi cation and the entering stream thoroughly mixes with the tank water. See recommended tank design schematics below:

TANK SCHEMATIC

SUGGESTIONS ON SYSTEM DESIGN AND PIPING PRACTICES

The prospective chilled water system should be designed to the specifi c requirements of the owner and to achieve the most effi cient 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 one temperature difference for all chilled water systems. The actual temperature difference that is selected for a specific installation is determined by the cost of the cooling coils for various temperature differences and the effect that higher differences may have on the operating cost of the chillers. A careful balance between energy savings and first cost should be made by the designer. These are the decisions that must be made by the designer for each application and only experienced designers should entertain water temperature differences in excess of 12°F on chilled water systems. 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 mean temperature difference.

c) Higher temperature differentials increase the possibilities of loss of temperature difference in coils due to dirt on the air 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 coilisal ways a concern of the water system designer. The possibility of laminar flow is greater with higher temperature differences. Laminar flow reduces the heat-transfer rate and should not occur in a coil at any point in its load range. Many systems operate inefficiently because of coils that were selected at too low a friction loss through them at design load; therefore, at reduced loads and flows, they operate with laminar flow.


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Control of Return Water Temperature: Return water temperature is one of the most important operating values for a chilled water system. It tells the operator just how good a job the control system and coils are doing in converting energy from the chillers to the air or water systems that are cooling the building. This is such a basic criterion that it should be addressed early in the design of a chilled water system. The proper method of controlling return temperature is through the correct selection of control valves and cooling coils. In conclusion, one of the designer’s most important tasks is the selection of a sound temperature differential that will provide maximum possible system efficiency. The second 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-wasting devices. 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 branch of 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 the normal 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 system without lifting the valve head off the valve seat.

Expansion tank should be provided to so that water volume changes can be accommodated. Expansion tanks are generally 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 parallel pumps are operated at different speeds, but only experienced designers should make evaluations for such a proposed operation. Also, it is better to use pumps of the same size when operating them in parallel. Variable speed pumps should be controlled so that pumps operating in parallel never have more than one percent difference in actual operating speed. Mixing of constant and variable speed pumps in parallel operation is wrong and leads to disastrous results.

Distribution pumps should be selected for maximum effi ciency at the design condition and within the economic constraints of the project. Distribution pumps should be added and subtracted to avoid operation of pumps at points of high thrust and poor effi ciency. Pump sequencing should achieve maximum possible system effi ciency.

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 check valves should be center guided, spring loaded, disc type check valves and should be sized so that the check valve is full open at design flow rate. Generally this will require the check valve to be one pipe size smaller than the connecting piping.

Circuiting Chilled water to Multiple Chillers : There are fundamentals for the circuiting of chillers that should not be violated in order to achieve maximum efficiency. Some of these are:

a) Design the piping arrangement so that energy consumption of chillers is not increased.

b) Arrange the piping so that all chillers receive the same return water temperature.

c) Ensure that the required design water flow through the coolers is always maintained.


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RIGGING INSTRUCTIONS

ATTENTION TO RIGGERS

Hook 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 li� ing point before li� ing. Use spreader bar when rigging, to prevent the slings from damaging the unit.

CAUTION

All 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.

MODELS: AASC055B - AASC215B



PROPER CLEARANCETO BE PROVIDED

SPREADER BAR

LIFT

SPREADER BAR


LIFT

LIFT

SPREADER BAR


LIFT


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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 aff ect unit effi ciency (EER) and can cause high pressure or fan motor temperature trips.

INSTALLATION CLEARANCE

WALL

FIGURE - 2CORNER WALL

FIGURE - 1STRAIGHT WALL

MODEL NUMBER A BAASC055B - AASC110B 2500 200 0

AASC120B - AASC215B 3000 200 0

AASC240B - AASC445B 3500 250 0


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NOTE: All dimensions are in mm.






MODEL AAASC075B 1312

AASC090B 1922

AASC100B 1922

AASC110B 1922

AASC120B 1922

AASC130B 1922

AASC140B 1922

MOUNTING LOCATION


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LOAD DISTRIBUTION, KG. (ALUMINUM CONDENSER COIL)

MODEL No. R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14

AASC055 646 606 517 399 - - - - - - - - - -

AASC060 652 612 522 404 - - - - - - - - - -

AASC070 688 654 554 429 - - - - - - - - - -

AASC075 557 526 510 416 385 369 - - - - - - - -

AASC090 759 696 680 565 510 487 - - - - - - - -

AASC100 796 741 725 582 527 511 - - - - - - - -

AASC110 841 787 771 659 606 588 - - - - - - - -

AASC120 854 813 789 639 598 575 - - - - - - - -

AASC130 883 839 815 667 626 602 - - - - - - - -

AASC140 947 908 868 743 703 672 - - - - - - - -

AASC150 831 803 794 785 698 619 610 601 - - - - - -

AASC170 857 830 820 811 721 642 633 624 - - - - - -

AASC185 869 838 827 817 737 657 652 636 - - - - - -

AASC200 908 883 872 862 778 693 682 657 - - - - - -

AASC215 929 903 893 883 800 714 704 678 - - - - - -

AASC240 103 0 996 968 962 955 889 855 827 820 813 - - - -

AASC255 102 0 986 958 951 944 884 856 829 815 808 - - - -

AASC275 110 1 1053 1033 102 9 1026 944 896 875 872 868 - - - -

AASC300 111 4 1061 1038 103 4 1027 954 901 878 875 868 - - - -

AASC315 114 8 1088 1072 106 9 1062 983 923 908 904 897 - - - -

AASC330 115 4 1094 1079 107 5 1068 989 928 913 909 903 - - - -

AASC350 101 0 990 980 970 960 955 950 863 843 833 823 813 808 803

AASC370 100 4 984 974 964 954 949 944 870 850 840 `830 820 815 810

AASC405 1086 1066 1056 1046 1036 1031 102 6 932 912 902 892 882 877 872

AASC445 1090 1070 1060 1050 1040 1035 103 0 934 914 904 894 884 879 874

R3

R1

R4

R2

R6

R1


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LOAD DISTRIBUTION, KG. (COPPER CONDENSER COIL)

R3

R1

R4

R2

R6

R1

MODEL No. R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14

AASC055 685 645 555 438 - - - - - - - - - -

AASC060 691 651 560 442 - - - - - - - - - -

AASC070 752 718 618 493 - - - - - - - - - -

AASC075 613 581 566 472 441 425 - - - - - - - -

AASC090 803 740 724 609 554 531 - - - - - - - -

AASC100 852 809 789 643 599 575 - - - - - - - -

AASC110 916 864 845 733 678 663 - - - - - - - -

AASC120 905 864 841 690 649 626 - - - - - - - -

AASC130 968 924 901 752 711 687 - - - - - - - -

AASC140 103 2 993 953 828 789 757 - - - - - - - -

AASC150 888 861 852 843 755 677 668 659 - - - - - -

AASC170 941 913 904 895 805 726 716 707 - - - - - -

AASC185 964 933 923 913 833 753 747 732 - - - - - -

AASC200 100 4 978 968 958 874 788 778 752 - - - - - -

AASC215 103 9 1013 1003 993 910 824 814 788 - - - - - -

AASC240 110 0 1065 1038 103 1 1024 958 924 896 889 883 - - - -

AASC255 108 9 1055 1027 102 0 1017 953 925 898 884 877 - - - -

AASC275 121 6 1168 1148 114 4 1141 1059 1010 990 986 983 - - - -

AASC300 122 8 1175 1153 114 9 1142 1069 1016 993 989 983 - - - -

AASC315 1280 1220 1205 1201 1194 1115 105 5 1040 103 6 1029 - - - -

AASC330 1286 1226 1211 1207 1200 1121 106 0 1045 104 2 1035 - - - -

AASC350 1105 1085 1075 1065 1055 1050 104 5 959 939 929 919 909 904 899

AASC370 1114 1094 1084 1074 1064 1059 105 4 979 959 949 939 929 924 919

AASC405 1212 1192 1182 1172 1162 1157 115 2 1058 103 8 1028 1018 1008 1003 998

AASC445 1216 1196 1186 1176 1166 1161 115 6 1060 104 0 1030 1020 1010 1005 100 0


Middle East Air Conditioners Co. Ltd.

Middle East Air Conditioners Co. Ltd.P.O. Box 14346 Dammam 31424 KSA

Kingdom of Saudi Arabia| Tel: +966 3 847 2688 Fax: +966 3 847 2931


GENERAL ELECTRIC AIR COOLED SCREW WATER...

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