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UNIT START-UP CHECKLIST
MODEL NO.:
DATE: ______________
SERIAL NO: _____________________________________
TECHNICIAN: ___________________________________
I. PRE-START-UP:
VERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT
VERIFY INSTALLATION OF OUTDOOR AIR HOOD
VERIFY INSTALLATION OF FLUE EXHAUST AND INLET HOOD (48PG and PM ONLY)
VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS
VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT
VERIFY GAS PRESSURE TO UNIT GAS VALVE IS WITHIN SPECIFIED RANGE (48PG and PM ONLY)
CHECK GAS PIPING FOR LEAKS (48PG AND 48PM)
CHECK THAT INDOORAIR FILTERS ARE CLEAN AND IN PLACE
CHECK THAT OUTDOOR AIR INLET SCREENS ARE IN PLACE
VERIFY THAT UNIT IS LEVEL
CHECK FAN WHEELS AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND VERIFY SETSCREW IS TIGHT
VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED
VERIFY THAT SCROLL COMPRESSORS ARE ROTATING IN THE CORRECT DIRECTION
VERIFY INSTALLATION OF THERMOSTAT/SPACE SENSOR
VERIFY CONFIGURATION VALUES FOR ELECTRONIC CONTROLS (REFER TO CONTROL SET UP CHECKLIST)
VERIFY THAT CRANKCASE HEATERS HAVE BEEN ENERGIZED FOR AT LEAST 24 HOURS
II. START-UP
ELECTRICAL
SUPPLY VOLTAGE L1‐L2 L2‐L3 L3‐L1
COMPRESSOR AMPS — COMPRESSOR A1 L1 L2 L3
]]—COMPRESSOR B1 L1 L2 L3
ELECTRIC HEAT AMPS (IF EQUIPPED) 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 F
GAS HEAT SUPPLY AIR (48PG AND PM ) F
ELECTRIC HEAT SUPPLY AIR (50PG AND PM) F
PRESSURES
GAS INLET PRESSURE IN. WG
GAS MANIFOLD PRESSURE STAGE NO. 1 IN. WG STAGE NO. 2 IN. WG
REFRIGERANT SUCTION CIRCUIT A PSIG CIRCUIT A Superheat degF
CIRCUIT B PSIG CIRCUIT B Superheat degF
REFRIGERANT DISCHARGE CIRCUIT A PSIG CIRCUIT A Subcooling degF
CIRCUIT B PSIG CIRCUIT B Subcooling degF
VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS
GENERAL
ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS
Copyright 2011 Carrier Corp. 7310 W. Morris St. Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 1/11
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Catalog No:48-50PGPM-03T
Replaces: 48-50PGPM-02T
48/50PG and PM
188


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