78 CGWF-SVX01A-EN
Unit Start-up
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Pre-Start Check List
Receiving
Verify that the unit Nameplate data corresponds to the ordering information.
Inspect unit for shipping damage and any shortages of materials. Report any damages or shortages to the carrier.
Unit Location and Mounting
Inspect the location desired for installation and verify adequate service access clearances.
Provide drainage for evaporator and condenser (CGWF only) water.
Remove and discard all shipping materials (cartons, etc.)
Install optional neoprene isolators, if required.
Level unit and secure it to the mounting surface.
Unit
Check compressor oil level(s). Oil should be visible in the compressor oil level sight glass.
Open (backseat) the liquid line and discharge service valve(s).
Check all water temperature sensors for proper installation
Electrical Wiring
Inspect all wiring connections. Connections should be clean and tight.
Check power supply voltage to the unit at the main power fused disconnect switch. Voltage must be within the voltage
utilization range.
Check compressor phase-sequencing.
Check Interlock Wiring, including chilled water pump control, chilled water flow switch, condenser water pump,
condenser water flow switch, external auto stop. For further details refer to the field wiring diagram.
Unit Piping
Flush all unit water piping before making final connections to unit.
Connect water piping to the evaporator and condenser (CGWF only).
Install pressure gauges and shutoff valves on the water inlet and outlet to the evap. and cond.
Install water strainers in the entering chilled water and condenser water lines.
Install balancing valves (discretionary) and flow switches in the leaving chilled and condenser water lines.
Install drains with shutoff valves or drain plugs on the evaporator and condenser.
Vent the chilled water and condenser water systems at the high points of the system piping.
Pipe relief valves outdoors in accordance to ASHRAE 15 and local code.
With water pump(s) running, adjust water flow and check the water pressure through the evaporator and condenser.
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