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WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL

Safety Considerations

Installing and servicing air conditioning and heating 

equipment can be hazardous due to system pressure and 

electrical components. Only trained and qualified service 

personnel should install, repair or service heating and air 

conditioning equipment. When working on heating and 

air conditioning equipment observe precautions in the 

literature, tags and labels attached to the unit and follow 

other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work 

gloves.  Use quenching cloth for brazing operations. Have a 

fire extinguisher available for all brazing operations.

NOTE:

  Before installing, check voltage of unit(s) to ensure 

proper voltage.

WARNING:  Before performing service or 

maintenance operations on the system, turn off 

main power switches to the unit.  Electrical shock 

could cause serious personal injury.

Application

Units are not intended for heating domestic potable water 

by direct coupling.  If used for this type of application, a 

secondary heat exchanger must be used.

Moving and Storage

Move units in the normal “Up” orientation as indicated by 

the labels on the unit packaging.  When the equipment 

is received, all items should be carefully checked against 

the bill of lading to ensure that all crates and cartons 

have been received in good condition.  Examine units for 

shipping damage, removing unit packaging if necessary 

to properly inspect unit.  Units in question should also 

be internally inspected.  If any damage is observed, the 

carrier should make the proper notation on delivery receipt 

acknowledging the damage. Units are to be stored in a 

location that provides adequate protection from dirt, debris 

and moisture.

Units are setup to be side picked using a fork lift. Some 

units include pick bars allowing for picking from the end 

with required fork lengths. Note unit labels and markings 

for safe picking points. Do not pick the unit up from points 

not specified and keep the unit level during transport and 

handling. Using improper equipment handling methods can 

result in damage and/or void the warranty. 

General Installation Information

WARNING: To avoid equipment damage, do not 

leave the system filled in a building without heat 

during cold weather, unless adequate freeze 

protection levels of antifreeze are used. Heat 

exchangers do not fully drain and will freeze 

unless protected, causing permanent damage. 

Unit Location

Provide sufficient room to make water and electrical 

connections.  If the unit is located in a confined space, 

provisions must be made for unit servicing.  Locate the 

unit in an indoor area that allows easy removal of the 

access panels and has enough space for service personnel 

to perform maintenance or repair.  These units are not 

approved for outdoor installation and, therefore, must be 

installed inside the structure being conditioned.  Do not 

locate units in areas subject to freezing conditions. 

WARNING: Do not store or install units in 

corrosive environments or in locations subject 

to temperature or humidity extremes (e.g. attics, 

garages, rooftops, etc.). Corrosive conditions and 

high temperature or humidity can significantly 

reduce performance, reliability, and service life.

 

WARNING: To avoid equipment damage and 

possible voiding of warranty, be sure that 

properly sized strainers are installed upstream 

of both brazed plate heat exchangers to protect 

them against particles in the fluid.

Summary of Contents for WC Series

Page 1: ...n Water Piping Connections Electrical Data Microprocessor Control Startup Procedures Preventive Maintenance WC Series Variable Speed Dual Screw Chiller Installation Manual WC Series Variable Speed Dua...

Page 2: ......

Page 3: ...onal Data 9 Rigging Data 12 Center of Gravity 13 Water Quality 14 Water Connections 15 Electrical Data 16 Electrical Connections 16 Wiring Schematics 17 Pressure Drop 20 Electrical System and Controls...

Page 4: ...knowledging the damage Units are to be stored in a location that provides adequate protection from dirt debris and moisture Units are setup to be side picked using a fork lift Some units include pick...

Page 5: ...ry Use Only Voltage 4 460 60 3 Electrical Option A Standard Fused Disconnect Control Option B Stand Alone BACnet Non Standard Options SSS None Future Option N Not Applicable Future Option 0 Not Applic...

Page 6: ...agement control Low impedance line reactors reduce harmonic noise and improve power factor Fused disconnects for each compressor Factory installed flow switches and modulating isolation valves Variabl...

Page 7: ...nclosure for maximum sound reduction Structural Steel frame to reduce vibration Flange style water connections for an easier and faster connection High efficiency brazed plate heat exchangers for effi...

Page 8: ...70 21 1 25 3 9 Min Leaving Water 70 21 1 40 4 4 Max Entering Water Brine 133 56 1 80 26 7 Max Leaving Water Brine 140 60 0 70 21 1 Min Differential Temperature 7 3 9 5 2 8 Max Differential Temperatur...

Page 9: ...9 WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL Dimensional Data PP PP PP PP PP PP PP PP PP PP PP PP 7RXFK VFUHHQ GLVSOD QVL ODQJH PP PP PP PP DE...

Page 10: ...10 WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL Dimensional Data cont PP PP PP PP 92 7 21752 2 1 5 725 2 86 2 2 92 7 2 QVL ODQJH 32 5 1 7 A DETAIL A...

Page 11: ...RIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL Dimensional Data cont RQGHQVHU YDSRUDWRU RPSUHVVRU LOWHU RQGHQVHU 2XWOHW RQGHQVHU QOHW YDSRUDWRU QOHW YDSRUDWRU 2XWOHW LOWHU ULHU LOWHU ULHU...

Page 12: ...12 WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL Rigging Data USE SPREADER BARS TO PREVENT DAMAGE OF UNIT...

Page 13: ...BLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL Center of Gravity C D B A F E G hE d t s t s t s Ed Z K Z s dz 1 MODEL SHIPPING WEIGHT NET WEIGHT WCHVE 175 13 000 13 000 WCHVE 225 12 500 12 500 WCHVE...

Page 14: ...the basis of acceptable pressure drop and not on pipe diameter The strainers selected should have a pressure drop at the nominal ow rate of the units low enough to be within the pumping capacity of t...

Page 15: ...hould be at least 15 F below the lowest leaving uid temperature Surface Condensation Chart Room Ambient Condition Surface Temperature 50 F 35 F 0 F Normal Max 85 F 70 RH 1 2 3 4 1 Mild Max 80 F 50 RH...

Page 16: ...0 240 0 20 0 480 0 540 0 600 800 HACR circuit breaker in USA only 7 22 19 1 MCC RLA LRA rating per compressor Breaker FLA sized for both compressors 2 LRA is compressor motor starting current Electri...

Page 17: ...Y1 EH2 C EH1 C CO C R Off Faul t LED1 R Status LED3 Config LED2 CC2 CC F C R F FG CC CCG CC2 HI CC2 LO CC2 G REVREV FP1 FP1 FP2 FP2 LPS LPS HPSHPS K1 RV Relay K2 CCRelay K3 CC2 Relay K4 Fan Relay K5...

Page 18: ...ure Use L Output Type CC Dual Single Acc Dip 5 Acc Dip 4 RV B O FP2 15 F 30 F FP1 15 F 30 F 1 2 3 4 5 6 7 8 Off PB2 2 1 3 White 304 White 308 White 312 White 316 Orange 307 Orange 303 Orange 311 Orang...

Page 19: ...2 DI2 GND L N XO5 X02 1 X02 2 T1 T2 T3 STO STO DI2 DI2 GND L N XO5 X02 1 X02 2 COMP B CONTROL BOARD REACTOR GROUND Transformer 2 24 V PB3 2 1 3 Transformer 3 24 V NOTE 1 460 V 460 V Purple Purple Blac...

Page 20: ...20 WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL Evaporator Pressure Drop Condenser Pressure Drop...

Page 21: ...d to the compressor contactor CC output of the Aurora control Anytime Aurora senses a fault that would require compressor shutdown it will trigger the STO input to turn the motor off High Pressure Swi...

Page 22: ...er Machine has been Running for 4 Minutes Suction Temperature Discharge Pressure Super Heat Hx1 Gas Pressure Subcooling Hx1 Sat Capacity Hx2 Gas Pressure Return Water from Geo Field Hx2 Sat Hx2 Gas Te...

Page 23: ...23 WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL Screw Refrigeration Cycle Analysis...

Page 24: ...nds per square inch HC Heating Capacity in MBTUH HE Heat of Extraction in MBTUH kW kilowatt ft hd pressure drop in feet of head HR Heat of Rejection Verify the following High voltage is correct and ma...

Page 25: ...for debris Check water flow rates and pressure drops across evaporators and condensers Verify graphical data and trending Properly document all data Annual Checks Remove and clean all waterside strai...

Page 26: ...Total Amps Comp Fan n _____ AMPS n ______ AMPS n ______ AMPS Watts m x n x 0 85 o _____ WATTS o ______ WATTS o ______ WATTS 6 CAPACITY Cooling Capacity HR o x 3 413 p _____ btu hr Heating Capacity HE...

Page 27: ...EM OK NG VERIFY ALL REFRIGERANT VALVES ARE OPEN OK NG VERIFY ELECTRICAL PANELS ARE FREE OF FOREIGN MATERIALS AND ALL WIRING IS TIGHT AND SECURE OK NG L1 L2 VOLTAGE V L1 L3 VOLTAGE V L2 L3 VOLTAGE V L1...

Page 28: ...VAPORATOR LOAD SIDE ANTIFREEZE CONCENTRATION TYPE CONDENSER LOAD SIDE ANTIFREEZE CONCENTRATION TYPE SOURCE LOAD SIDE ANTIFREEZE CONCENTRATION TYPE APPROVAL OF ANTIFREEZE CONCENTRATION TO ADJUST FREEZE...

Page 29: ...LY ENHANCED CONTROLS ONLY OK NG VERIFY WATER TEMPERATURES CLOSELY MATCH REFRIGERANT SAT TEMPERATURES OK NG VERIFY COMPRESSOR AND UNIT SETTINGS ARE CORRECT SEE SHEET BELOW OK NG COMPUTER STATIC IP ADDR...

Page 30: ...TER TEMP F ENTERING COLD WATER TEMP F LEAVING COLD WATER TEMP F COMPRESSOR 1 CAPACITY COMPRESSOR AMPERAGE A COMPRESSOR 2 CAPACITY COMPRESSOR AMPERAGE A COMPRESSOR 3 CAPACITY COMPRESSOR AMPERAGE A COMP...

Page 31: ...31 WC SERIES VARIABLE SPEED DUAL SCREW CHILLER INSTALLATION MANUAL Pages Description Date By All Document Creation July 2019 MA Revision Guide...

Page 32: ...nd development and reserves the right to change design and speci cations without notice Product WC Series VS Dual Screw Chiller Type Water Cooled Chiller 60 Hz Size 175 300 Tons Document Installation...

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