Charging the system
Before you begin:
NOTICE
For cold weather charging of the system at temperatures of 55°F or below, see the Optional cold
weather charging procedures near the end of this section.
CAUTION
Do not leave the system open to the atmosphere.
WARNING
Do not attempt to pump the total system charge into the outdoor unit for maintenance or service. This
may cause damage to the compressor or other components. Recover and weigh the system charge into
an appropriate recovery cylinder for any instances requiring evacuation.
WARNING
Do not attempt to pump more than the factory charge and an additional 15 ft line charge into a tube
and fin outdoor unit for maintenance or service. This can cause damage to the compressor or other
components.
CAUTION
Refrigerant charging must only be carried out by a qualified air conditioning contractor.
39Installation Manual: R-454B Outdoor Split-System Air Conditioner
Johnson Controls Ducted Systems
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