York YCIV - Page 72

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JOHNSON CONTROLS72

FORM 201.23-EG2 (713)

Typical Control Wiring - Four Compressor

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Table of Contents2
Introduction3
- YORK YCIV Air-Cooled Screw Liquid Chillers3
- Power and Electrical4
- Refrigerant Circuit4
Unit Overview4
- Evaporator5
- Microcomputer Control Center5
- Condenser Section5
- Complete Factory Package6
- Sound Reduction Options7
- Condenser Coil Protection7
- Ultra Quiet Fans7
Accessories and Options7
- Vibration Isolation8
- General Options8
- Evaporator Options8
Nomenclature9
- Temperature and Flows10
- Si Units12
Water Pressure Drop12
Pressure Drop through Three and Four Circuit YCIV Evaporators13
Standard Efficiency Ratings - si - 400V/50Hz14
High Efficiency Ratings - si - 400V/50Hz18
High Efficiency Ratings - si - 400V/50Hz20
Physical Data (si - Standard Efficiency)22
Physical Data (si - High Efficiency)24
Dimensions26
Isolator Locations48
Isolator Locations - si50
Isolator Details52
- Elastomeric Isolator Cross-Reference53
- Two Inch Deflection, Seismic Spring Isolator Cross-Reference54
Electrical Data - 2 Comp Standard Efficiency56
Electrical Data - 2 Comp High Efficiency58
Electrical Data - 3 & 4 Comp Standard Efficiency60
Electrical Data - 3 Comp High Efficiency62
Voltage Utilization Range64
Electrical Notes64
- 2 Compressor Power Wiring Connections65
- Two Compressor Wiring Diagram with Circuit Breaker65
- Two Compressor Wiring Diagram with Terminal Block65
Power Wiring65
- 3 Compressor Power Wiring Connections66
- Four Compressor Wiring Diagram with Circuit Breaker – Multi Point67
Typical Control Wiring - Two Compressor68
Typical Control Wiring - Three Compressor70
- Chilled Liquid Piping74
- Foundation74
- Unit Location74
Application Data74
- Delivery and Handling75
- Quality Assurance75
- Products75
Guide Specifications75
- Compressors and Motors76
- Heat Exchangers76
- Operating Characteristics76
- Refrigerant Circuit Components76
- Power and Electrical Requirements77
- Controls77
- Display and Keypad77
- Power Supply/Connections78
- Protective Chiller Panels78
- Execution79
- Building Automation System Interface79

York YCIV - Page 72

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