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Section One
About The Manual
Literature Change History ................................................2
Overview of Manual .........................................................2
Section Two
General Information
Model Number Description ..............................................4
Unit Nameplate ................................................................4
Compressor Nameplate ...................................................4
Evaporator Barrel Nameplate ..........................................4
Hazard Identification ........................................................4
Unit Description................................................................4
Unit Component “Layout” and “Shipwith” Locations........5
Section Three
Installation
Unit Inspection .................................................................6
Unit Clearances ...............................................................6
Unit Dimensions & Weight Information............................6
Foundation .......................................................................6
Rigging ...........................................................................16
Unit Isolation ..................................................................16
Leveling the Unit ............................................................17
Shipping Fasteners ........................................................17
General Unit Requirements ...........................................19
Refrigerant Piping Requirements ...............................19
EVP Chilled Water Piping Requirements ...................19
Main Electrical Power Requirements .........................19
Field Installed Control Wiring Requirements .............20
Low Voltage Wiring (AC & DC) ..................................20
Refrigerant Line Components........................................21
Refrigerant Piping.......................................................23
Suction Lines ..............................................................23
Liquid Lines ................................................................23
Evaporator Piping .......................................................24
Hot Gas Bypass Lines ................................................24
Optional Pressure Gauges .........................................24
Final Refrigerant Pipe Connections ...........................25
Brazing Procedures .......................................................25
Leak Testing Procedure .................................................26
Chilled Water Piping ......................................................27
Final Water Piping Connections .................................28
Field Installed Power Wiring ..........................................28
Main Unit Power Wiring..............................................28
Power Wire Sizing and Protection Device
Equations....................................................................29
Field Installed Control Wiring.........................................31
Controls Using 115 VAC .............................................31
Controls using 24 VAC ...............................................31
Controls using DC Analog Input/Outputs ...................32
Economizer Actuator Circuit .......................................32
No System Control .....................................................33
Variable Air Volume Control .......................................36
Discharge Air Sensor..................................................36
Suction Line Thermostat ............................................36
Night Setback .............................................................36
EVP Chiller Control ....................................................39
Chilled Water Temperature Sensor ............................39
Outside Air Thermostat...............................................39
Section Four
System Pre-Start Procedures
System Evacuation Procedures.....................................42
Discharge Air Controller Checkout ................................44
Discharge Air Sensor Checkout.....................................45
Economizer Actuator Checkout .....................................46
EVP Chiller Control Checkout........................................46
Chilled Water Sensor Checkout .....................................47
Voltage Imbalance .........................................................48
Electrical Phasing ..........................................................48
Section Five
System Start-Up
Sequence of Operation ..................................................49
Sequence of Operation ..................................................50
Sequence of Operation ..................................................51
Low Ambient Damper Adjustment .................................52
EVP Chiller Applications ................................................52
“Air Over” Evaporator Application ..................................52
System Airflow Measurement ........................................53
Compressor Start-Up .....................................................53
Final System Setup ........................................................59
Section Six
Service & Maintenance
Compressor Operational Sounds ..................................61
Scroll Compressor Replacement ...................................61
Fuse Replacement Data ................................................62
Monthly Maintenance .....................................................62
Coil Cleaning ..................................................................63
System operation ...........................................................63
Index ..................................................................................64
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