124 RTHD-SVX01D-EN
Unit Start-up
Inspect all wiring connections. Connections should be clean and tight.
Energize crankcase heaters. Heaters need to be energized 24 hours before start-up.
Confirm that all service and isolation valves are open. Refer to RTHD-SVB01A-EN for RTHD units, RTHC-
SB-1B for RTHC units and RTHB-IOM-1 for the RTHB units.
Remove the four (3 on B Frame Compressors) compressor shipping stops (snubbers) from under the
compressor. (RTHD and RTHC only)
Remove shipping bolts from under the two oil separators (RTHD and RTHC only)
Confirm phase-sequencing “A-B-C”. Refer to the IOM for further details.
Check all water temperature sensors for proper installation and use of heat transfer paste.
Fill the chilled water circuit. Type of glycol ___________________ Percent of glycol _______________ by
weight
Caution:
To prevent equipment damage, do not use untreated or improperly treated water in the system.
Fill the condensing water circuit.
Close the fused disconnect switch to supply power to the chilled water pump and condenser water pump
starter.
Start the water pumps. With water pumps running, inspect all piping connections for leakage. Make any
necessary repairs.
With water pumps running, adjust water flows and check water pressure drops through the evaporator and
condenser.
Adjust the flow switches for proper operation.
Return pumps to the automatic mode.
Disable machine start circuit until start-up mechanic arrives (use either the external stop or emergency stop
circuit)
Installation Checklist for Model RTHD Series R
PRE-START CHECK-OUT
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