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STEP 3 - Turn on disconnect(s) to apply power
to the indoor and outdoor units.
STEP 4 - Wait one (1) hour before starting the
unit if compressor crankcase heater acces-
sory is used and the Outdoor Ambient is below
70ºF.
STEP 5 - Set system thermostat to ON.
Section 14. System Charge Adjustment
14.1 Temperature Measurements (Systems can be rated with TXV, EEV or Piston. Ensure charging method
is correct).
Important: Installer must mark/write the total refrigerant charge on the OD unit label after adjusting for indoor
coil and lineset. Technicians must have their refrigerant cylinder on a scale during the charging procedure and
measure how much additional refrigerant is put in the system (additional over the factory charge). The additional
charge must be recorded on the label provided on the outdoor unit as well as the resulting total system charge.
Important: Standard service trucks and vans may not carry more than six 25# cylinders (< 220 lb of A2L refriger-
ant total)
Important: A2L approved equipment required for leak detection, charge and recovery.
Important: Ensure that contamination of different refrigerants does not occur when using charging equipment.
Important: A set of calibrated weighing scales shall be available and in good working order. Hoses shall be com-
plete with leak-free disconnect couplings and in good condition. Ensure any associated electrical components
are sealed.
14
ON
OFF
60 MIN.
ON
DONE
CANCEL
18-AC127D1-1A-EN
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