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WSHP-SVX022A-EN
Pre-Start Checklist
Before energizing the unit, the following system devices
must be checked:
• Is the high voltage power supply correct and in
accordance with the nameplate ratings?
• Is the field wiring and circuit protection the correct size?
• Is the low voltage control circuit wiring correct per the
unit wiring diagram?
• Is the piping system clean/complete and correct? (A
recommendation of all system flushing of debris from
the water-to-refrigerant heat exchanger, along with air
purging from the water to-refrigerant heat exchanger be
done in accordance with the Closed-Loop/Ground
Source Heat Pump Systems Installation Guide).
• Is vibration isolation provided? (i.e. unit isolation pad,
hose kits).
• Is unit serviceable? (Allow a 12-inch clearance at the
unit front for serviceability).
• Are the low/high-side pressure temperature caps
secure and in place?
• Are all the unit access panels secure and in place?
• Is the thermostat in the OFF position?
• Is the water flow established and circulating through all
the units?
• Is the duct work correctly sized, run, taped, insulated
and weather proofed with proper unit arrangement?
• Is the condensate line properly sized, run, and pitched?
• Is the zone sensor (when used) correctly wired and in a
good location?
• Does the indoor blower turn freely without rubbing?
• Has all work been done in accordance with applicable
local and national codes?
• Has heat transfer fluid been added in the proper mix to
prevent freezing in closed system application?
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