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 Controls, Start-Up, Operation, Service and Trouble-
shooting document.
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 (48P 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 2019 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480241-01
UNIT START-UP CHECKLIST
L1-L2
__________
L2-L3
(CV)
________
(VAV)
________ *
__________ F DB (Dry Bulb)
__________ F DB _________ F WB (Wet Bulb)
__________ F
__________ F (48P ONLY)
__________ F (50P ONLY, IF EQUIPPED)
__________
IN. WG (48P ONLY)
STAGE NO. 1 ___________ IN. WG
CIRCUIT NO. 1 __________ PSIG
CIRCUIT NO. 2 __________ PSIG
Printed in U.S.A.
Form 48/50P-8T
SERIAL NO.: ______________________________________
TECHNICIAN: ____________________________________
__________
L3-L1
__________
__________
L2
__________
__________
L2
__________
EXHAUST FAN AMPS __________
STAGE NO. 2 __________IN. WG (48P ONLY)
CIRCUIT NO. 2 __________ PSIG
CIRCUIT NO. 2 __________ PSIG
Pg CL-8
L2 _________
L2 _________
8-19
Replaces: 48/50P-7T