Carrier 48PG20-28 Unit Start-Upchecklist, I. Pre-Start-Up, Ii.Start-Up, Electrical, Temperatures

UNIT START-UP CHECKLIST

MODEL NO.:___________________________________________	SERIAL NO.:______________________________________________
DATE:_________________________________________________	TECHNICIAN: ____________________________________________

I. PRE-START-UP:

VERIFY THAT ALL PACKING 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 WHEEL 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		L1-L2	L2-L3		L3-L1
COMPRESSOR AMPS — COMPRESSOR A1			L1		L2	L3
	— COMPRESSOR A2		L1		L2	L3
	— COMPRESSOR B1		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			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 B	PSIG
REFRIGERANT DISCHARGE CIRCUIT A	PSIG
CIRCUIT B	PSIG

VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS ON PAGE 50

GENERAL￿

ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS

Copyright 2005 Carrier Corporation

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

Book	1	4	PC 111	Catalog No. 534-80211	Printed in U.S.A.	Form 48PG-10SI	Pg CL-1	9-05	Replaces: New
Tab	1a	6a

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