Carrier WeatherExpert 48N2 Controls, Start-Up, Operation, Service, And Troubleshooting page 259

I. Project Information
Job Name __________________________________________________________________________________________________
Address ____________________________________________________________________________________________________
City ___________________________________________________________ State ____________________ Zip ______________
Installing Contractor Name ___________________________________________________ Phone ___________________________
Equipment tag / Mark for ______________________________________________________________________________________
Sales Office _________________________________________________________________________________________________
Prestart-up Performed by (Name) _______________________________________________ Phone __________________________
Unit Model (18 Chars) ____________________________________________ Serial (10 Chars) ____________________________
Design Information
Supply Airflow External Static
(CFM) Pressure (ESP)
II. Start-Up
Electrical (All readings to be taken at full load
Supply Voltage
Check Voltage Imbalance
Average Voltage = (L1-L2 + L2-L3 + L3-Ll)/3
Maximum Deviation from Average Voltage = _______________
Voltage Imbalance = _______________% (max. deviation/average voltage) x 100
Voltage imbalance less than 2%.
(Do not start unit if voltage imbalance is greater than 2%. Contact local utility for assistance.)
Compressor Motor Current (amps):
Compressor A1
Compressor A2
Compressor A3
Compressor A4
Compressor B1
Compressor B2
Compressor B3
Compressor B4
Supply Fan Amps (measured)
Exhaust Fan Amps
Fan amp readings must be taken with a true RMS meter for accuracy
Fan amp reading must be taken with the fan running at 60 Hz.
Condenser Fan Motor Current (amps):
Outdoor Fan Motor 1
OFM 2
OFM 3
OFM 4
OFM 5
OFM 6
Start-Up Checklist for 48/50N-Series Packaged Rooftop
(Remove and use for Job File)
Return Air Temperature (RAT)
Dry Bulb (DB)
L1-L2 ______________
L1___________
L1___________
L1___________
L1___________
L1___________
L1___________
L1___________
L1___________
L1___________ L2 ___________
L1___________ L2 ___________
L1___________
L1___________
L1___________
L1___________
L1___________
L1___________
Wet Bulb (WB)
L2-L3 _______________
L2 ___________
L2 ___________
L2 ___________
L2 ___________
L2 ___________
L2 ___________
L2 ___________
L2 ___________
L3 ___________
L3 ___________
L2 ___________
L2 ___________
L2 ___________
L2 ___________
L2 ___________
L2 ___________
CL-3
Condenser
Supply Air
Entering Air
Temperature
Temperature
L3-L1 ___________
Yes No
 
L3 ___________
L3 ___________
L3 ___________
L3 ___________
L3 ___________
L3 ___________
L3 ___________
L3 ___________
ComfortLink ___________
ComfortLink ___________
L3 ___________
L3 ___________
L3 ___________
L3 ___________
L3 ___________
L3 ___________