Carrier WEATHERMAKER 48/50AJ Operation And Service Manual page 190

MODEL NO.: _________________________________
SOFTWARE VERSION _________________________
DATE: _______________________________________
PRE-START-UP:
 VERIFY THAT DIP SWITCH SETTINGS ARE CORRECT
 VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT
 REMOVE ALL COMPRESSOR SHIPPING HOLDDOWN BOLTS AND BRACKETS PER INSTRUCTIONS
 VERIFY INSTALLATION OF ECONOMIZER HOOD
 VERIFY INSTALLATION OF ALL OPTIONS AND ACCESSORIES
 VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT
 CHECK GAS PIPING FOR LEAKS (48A ONLY)
 CHECK THAT RETURN-AIR FILTER AND OUTDOOR-AIR FILTERS ARE CLEAN AND IN PLACE
 VERIFY THAT UNIT IS LEVEL WITHIN TOLERANCES FOR PROPER CONDENSATE DRAINAGE
 CHECK FAN WHEELS AND PROPELLERS FOR LOCATION IN HOUSING/ORIFICE, AND SETSCREW IS TIGHT
 VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED
 VERIFY THAT SUCTION, DISCHARGE, AND LIQUID SERVICE VALVES ON EACH CIRCUIT ARE OPEN
 VERIFY THAT CRANKCASE HEATERS HAVE BEEN ON 24 HOURS BEFORE START-UP
START-UP:
ELECTRICAL
SUPPLY VOLTAGE
COMPRESSOR AMPS — COMPRESSOR NO. 1 L1
COMPRESSOR AMPS — COMPRESSOR NO. 2 L1
SUPPLY FANS AMPS
*VAV fan supply amps reading must be taken with a true RMS meter for accurate readings.
TEMPERATURES
OUTDOOR-AIR TEMPERATURE
RETURN-AIR TEMPERATURE
COOLING SUPPLY AIR
GAS HEAT SUPPLY AIR
ELECTRIC HEAT SUPPLY AIR
PRESSURES
GAS INLET PRESSURE
GAS MANIFOLD PRESSURE
REFRIGERANT SUCTION
REFRIGERANT DISCHARGE
 VERIFY REFRIGERANT CHARGE.
Copyright 2010 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480077-01
UNIT START-UP CHECKLIST
L1-L2 __________ L2-L3
(CV) ________
(VAV) ________ *
__________ F DB (Dry Bulb)
__________ F DB __________ F WB (Wet Bulb)
__________ F
__________ F (48A ONLY)
__________ F (50A ONLY, IF EQUIPPED)
__________ IN. WG (48A ONLY)
STAGE NO. 1 __________ IN. WG
CIRCUIT NO. 1 __________ PSIG
CIRCUIT NO. 2 __________ PSIG
Printed in U.S.A.
SERIAL NO.: ______________________________________
TECHNICIAN: ____________________________________
__________ L3-L1 __________
__________ L2 __________
__________ L2 __________
EXHAUST FAN AMPS __________
STAGE NO. 2 __________IN. WG (48A ONLY)
CIRCUIT NO. 2__________ PSIG
CIRCUIT NO. 2__________ PSIG
Form 48/50A-9T Pg CL-6
L3 _________
L3 _________
6-10 Replaces: 48/50A-7T