Carrier 50HCQ - Unit Start-Up Checklist; Pre-Start-Up Verification; Cooling Cycle Start-Up Procedures

55
UNIT START-UP CHECKLIST
(Remove and Store in Job File)
NOTE: To avoid injury to personnel and damage to equipment or property when
completing the procedures listed in this start-up checklist, use good judgement,
follow safe practices, and adhere to the safety considerations/information as
outlined in the preceding sections of this Installation Instructions document.
MODEL NO.: SERIAL NO.:
I. PRE-START-UP
j VERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT
j VERIFY INSTALLATION OF OUTDOOR AIR HOOD
j VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS
j VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT
j CHECK THAT INDOOR−AIR FILTERS ARE CLEAN AND IN PLACE
j CHECK THAT OUTDOOR AIR INLET SCREENS ARE IN PLACE
j VERIFY THAT UNIT IS LEVEL
j CHECK FAN WHEELS AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND VERIFY
SETSCREW IS TIGHT
j VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED
j VERIFY THAT SCROLL COMPRESSORS ARE ROTATING IN THE CORRECT DIRECTION
j VERIFY INSTALLATION OF THERMOSTAT
II. START-UP
COOLING CYCLE −
ELECTRICAL
SUPPLY VOLTAGE L1−L2 L2−L3 L3−L1
COMPRESSOR AMPS 1 L1 L2 L3
COMPRESSOR AMPS 2 L1 L2 L3
SUPPLY FAN AMPS L1 L2 L3
TEMPERATURES
OUTDOOR−AIR TEMPERATURE _F DB (DRY BULB)
RETURN−AIR TEMPERATURE _F DB _F WB (WET BULB)
COOLING SUPPLY AIR TEMPERATURE _F
PRESSURES
REFRIGERANT SUCTION CIRCUIT A PSIG
CIRCUIT B PSIG
REFRIGERANT DISCHARGE CIRCUIT A PSIG
CIRCUIT B PSIG
j VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS
HEATING CYCLE −
ELECTRICAL
SUPPLY VOLTAGE L1−L2 L2−L3 L3−L1
COMPRESSOR AMPS 1 L1 L2 L3
COMPRESSOR AMPS 2 L1 L2 L3
SUPPLY FAN AMPS L1 L2 L3
50HCQ