Carrier 50PG24 - Unit Start-Up Checklist; Pre-Start-Up Verification Steps; Start-Up Electrical Data Recording

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480028-01 Printed in U.S.A. Form 48/50PG-5T Pg CL-6 6-06 Replaces: 48/50PG-2T
Copyright 2006 Carrier Corporation
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CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE
Book 1 1
Tab 1a 1b
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 (48PG ONLY)
 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 (48PG ONLY)
 CHECK GAS PIPING FOR LEAKS (48PG ONLY)
 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/SPACE SENSOR
 VERIFY INSTALLATION OF HUMIDITY SWITCH/SENSOR (HUMIDI-MIZER™ UNITS ONLY)
 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
TEMPERATURES
PRESSURES
 VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS ON PAGES 89 AND 90
GENERAL
 ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS
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
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) F
ELECTRIC HEAT SUPPLY AIR (50PG) F
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