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SCW-410-QS (05/12)
Page 21
System Start-up
Evacuation/Charging
1. SCW Models
Refer to Figure 15 and the following description:
Evacuation and Initial Charge
1. Carefully vent the nitrogen charge from the compressor unit.
2. After installing and nitrogen brazing the HVAC system components and
compressor unit service valves, turn the Service Valves “OFF” and pressurize the
HVAC components to 150 psig with dry nitrogen and a trace of refrigerant. Valve
off the nitrogen Tank from the HVAC system components and check joints with a
sensitive Electronic Leak Detector to ensure they are sealed. Check the Pressure
gage after 15 minutes and verify the original pressure has not decreased. Repair
any leaks and re-test as appropriate.
3. After venting the pressurized system, connect the Gage Block, Refrigerant
Container and Hoses as shown in Figure 15. LP and HP valves are fully open.
Both Service Valves are fully opened.
4. As illustrated in Figure 15, connect a good quality Digital Micron Gage to the
Liquid Line Service Valve Access Port with an Isolation Hose/Valve. Connect a
quality Vacuum Pump (at least 6 CFM capacity) to the Gage Block.
5. Connect the Refrigerant Hose from the Refrigerant Container to the Charging
Port. Purge the Charging Hose of air, tighten the hose connection to the Charging
Port and close the Valve on the Refrigerant Container.
Summary of Contents for SCW Series
Page 8: ...SCW 410 QS 05 12 Page 8...
Page 9: ...SCW 410 QS 05 12 Page 9 Figure 5 SCW Connections for R 410A...
Page 10: ...SCW 410 QS 05 12 Page 10 Figure 6 SCW Internal Flow Schematic...
Page 11: ...SCW 410 QS 05 12 Page 11 Figure 7 SCW Piping...
Page 15: ...SCW 410 QS 05 12 Page 15 Figure 10 SCW Electrical Ladder Diagram 230 1 60...
Page 16: ...SCW 410 QS 05 12 Page 16 Figure 11 SCW Electrical Schematic 230 1 60...
Page 17: ...SCW 410 QS 05 12 Page 17 Figure 12 SCW Series 230 3 60 Electrical Ladder Diagram...
Page 18: ...SCW 410 QS 05 12 Page 18 Figure 13 SCW Series 230 3 60 Electrical Schematic...
Page 19: ...SCW 410 QS 05 12 Page 19 Figure 14 Part 1 of 2 SCW Field Wiring Diagram Reference Figure 8...
Page 20: ...SCW 410 QS 05 12 Page 20 Figure 14 Part 2 of 2 SCW Field Wiring Diagram Reference Figure 9...
Page 28: ...SCW 410 QS 05 12 Page 28 Figure 21 Charging and Superheat Adjustment Process...