18
WSHP-SVX02E-EN
Unit Start-up
Start-up with the system controls is included below:
1. Set the system control to the cooling mode of
operation.
2. Turn on the circulation pumps. The compressor should
NOT run.
3. Reduce the temperature control setting until the
compressor, reversing valve and solenoid valve are
energized. Verify system flow rate is the same as what
was selected on the unit. Refer to Operating Data
chapter for the water temperature change for the load
and source side. Compressor amps should be within
data plate ratings, and the suction line should be cool
with no frost observed in the refrigerant circuit.
4. Check the cooling refrigerant pressures against values
in Operating Data chapter.
5. Turn the system control switch to the OFF position.
Unit should stop running and the reversing valve
should de-energize.
6. Leave unit off for approximately FIVE minutes to allow
for pressure equalization.
7. Set system control to the heating mode of operation.
8. Adjust the temperature setting upward until the unit is
energized. Refer to Operating Pressures on Operating
Data chapter. for the water temperature change for the
load and source side. The compressor operation
should be smooth with no frost observed in the
refrigeration circuit.
9. Check the heating refrigerant pressures against values
in Operating Data chapter.
10. Set the system control to maintain the desired space
temperature.
11. Instruct the owner on system operation.
