Carrier WEATHERMAKER 48A2020 - Form 48;50 A-14 T Pg

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480239-01 Printed in U.S.A. Form 48/50A-14T Pg CL-1 5-19 Replaces: 48/50A-13T
UNIT START-UP CHECKLIST
MODEL NO.: _________________________________ SERIAL NO.: _____________________________________
SOFTWARE VERSION _________________________ TECHNICIAN: ____________________________________
DATE: _______________________________________
PRE-START-UP:
 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 PER INSTRUCTIONS
(including relocation of OAT sensor if necessary)
 VERIFY INSTALLATION OF ALL OPTIONS AND ACCESSORIES
 VERIFY PROPER INSTALLATION AND LOCATION OF STATIC PRESSURE TRANSDUCERS
(Supply Duct and Building Pressure when applicable)
 VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT
 VERIFY INSTALLATION AND LOCATION OF LAT SENSORS (multi-staged gas, SCR electric, hydronic heat only)
 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 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/SAV) ________ 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)
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 preced-
ing sections of this Controls, Start-Up, Operation, Service, and
Troubleshooting document.