Carrier 48/50AJ Manual De Usuario

Catalog No. 04-53480077-01

Printed in U.S.A.

Form 48/50A-9T

Pg CL-6

6-10

Replaces: 48/50A-7T

Copyright 2010 Carrier Corporation

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MODEL NO.: _________________________________

SERIAL NO.: ______________________________________

SOFTWARE VERSION _________________________

TECHNICIAN: ____________________________________

DATE: _______________________________________

 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

ELECTRICAL
SUPPLY VOLTAGE 

L1-L2

__________

L2-L3 

__________

L3-L1

__________

COMPRESSOR AMPS — COMPRESSOR NO. 1  L1

__________

L2

__________

L3  _________

COMPRESSOR AMPS — COMPRESSOR NO. 2  L1

__________

L2

__________

L3  _________

SUPPLY FANS AMPS

(CV)

________

EXHAUST FAN AMPS __________

(VAV)

________ *

*VAV fan supply amps reading must be taken with a true RMS meter for accurate readings.
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 (48A ONLY)

ELECTRIC HEAT SUPPLY AIR

__________ F (50A ONLY, IF EQUIPPED)

PRESSURES
GAS INLET PRESSURE

__________

IN. WG (48A ONLY)

GAS MANIFOLD PRESSURE

STAGE NO. 1 __________  IN. WG 

STAGE NO. 2 __________IN. WG (48A ONLY)

REFRIGERANT SUCTION

CIRCUIT NO. 1 __________ PSIG 

CIRCUIT NO. 2__________ PSIG

REFRIGERANT DISCHARGE

CIRCUIT NO. 2 __________ PSIG

CIRCUIT NO. 2__________ PSIG

 VERIFY REFRIGERANT CHARGE.