WSHP-SVX01E-EN 77
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 phasing of the unit correct per
compressor rotation (scroll
compressor only)?
• 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, hosekits)
• Is unit serviceable? (See
clearance specifications on
pages 8 and 9).
• 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, trapped, pitched and
primed?
• Is the zone sensor 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?
Pre-Start
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