Start-Up Checklist - Carrier WeatherMaster 48HC07-12 Installation Instructions Manual

Single package rooftop gas heat/electric cooling unit with puron r-410a refrigerant

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Table of Contents

NOTE: To avoid injury to personnel and damage to equipment or

property when completing the procedures listed in this start-up

checklist, use good judgment, follow safe practices, and adhere to

the safety considerations/information as outlined in preceding sec-

tions of this Installation Instructions.

MODEL NO.: ____________________________________________ SERIAL NO.: ____________________________

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



VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS



VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT



VERIFY GAS PRESSURE TO UNIT GAS VALVE IS WITHIN SPECIFIED RANGE



CHECK GAS PIPING FOR LEAKS



CHECK THAT INDOOR-AIR 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



VERIFY THAT CRANKCASE HEATERS HAVE BEEN ENERGIZED FOR AT LEAST 24 HOURS



II. START-UP

ELECTRICAL

SUPPLY VOLTAGE

COMPRESSOR AMPS 1

COMPRESSOR AMPS 2

SUPPLY FAN AMPS

TEMPERATURES

OUTDOOR-AIR TEMPERATURE

RETURN-AIR TEMPERATURE

COOLING SUPPLY AIR TEMPERATURE

GAS HEAT SUPPLY AIRS

PRESSURES

GAS INLET PRESSURE

GAS MANIFOLD PRESSURE

REFRIGERANT SUCTION

REFRIGERANT DISCHARGE

PRESSURES (CONT)

VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS



GENERAL

ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS (IF EQUIPPED)



Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53480177-01