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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