Unit Start-Up Checklist - Carrier 48LC Series Controls, Start-Up, Operation And Troubleshooting

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.:
DATE:
I. PRE-START-UP:
VERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT
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VERIFY INSTALLATION OF OUTDOOR AIR HOOD
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VERIFY INSTALLATION OF FLUE EXHAUST AND INLET HOOD (48LC ONLY)
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VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS
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VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT
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VERIFY GAS PRESSURE TO UNIT GAS VALVE IS WITHIN SPECIFIED RANGE (48LC ONLY)
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CHECK GAS PIPING FOR LEAKS (48LC ONLY)
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CHECK THAT INDOOR- -AIR FILTERS ARE CLEAN AND IN PLACE
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CHECK THAT OUTDOOR AIR INLET SCREENS ARE IN PLACE
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VERIFY THAT UNIT IS LEVEL
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CHECK FAN WHEELS AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND VERIFY SETSCREW IS TIGHT
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VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED
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VERIFY THAT SCROLL COMPRESSORS ARE ROTATING IN THE CORRECT DIRECTION
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VERIFY INSTALLATION OF THERMOSTAT/SPACE SENSOR
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VERIFY CONFIGURATION VALUES FOR ELECTRONIC CONTROLS (REFER TO CONTROL SET UP CHECKLIST)
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VERIFY THAT CRANKCASE HEATERS HAVE BEEN ENERGIZED FOR AT LEAST 24 HOURS (48LC ONLY)
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II. START-UP
ELECTRICAL
SUPPLY VOLTAGE
COMPRESSOR AMPS
ELECTRIC HEAT AMPS (IF EQUIPPED)
SUPPLY FAN AMPS AT MAX SPEED
TEMPERATURES
OUTDOOR-AIR TEMPERATURE
RETURN-AIR TEMPERATURE
COOLING SUPPLY AIR
GAS HEAT SUPPLY AIR (48LC )
ELECTRIC HEAT SUPPLY AIR (50LC)
PRESSURES
GAS INLET PRESSURE
GAS MANIFOLD PRESSURE
REFRIGERANT SUCTION
REFRIGERANT DISCHARGE
VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS
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GENERAL
ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS
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UNIT START-UP CHECKLIST

(Remove and Store in Job File)
L1-L2
— UNLOADED
— WITH LOADER
STAGE NO. 1
CIRCUIT A
CIRCUIT A
SERIAL NO:
TECHNICIAN:
L2-L3 L3-L1
L1 L2
L1 L2
L1 L2
L1 L2
F DB (Dry Bulb)
F DB
F DB
F
F
IN. WG
IN. WG STAGE NO. 2
PSIG CIRCUIT A Superheat
PSIG CIRCUIT A Subcooling
163
L3
L3
L3
L3
F WB (Wet Bulb)
F WB
F WB
F
F
IN. WG
degF
degF