For units equipped with low ambient
refrigerant flood back option being charged
when the ambient temperature is cold:
Once enough charge has been added to get
the evaporator superheat and sub-cooling
values to the correct setting, more charge
may need to be added. If the ambient
temperature is 0°F no more charge is
required. If the ambient temperature is
around 40°F add approximately 40% of the
receiver tank volume.
The unit will have to be checked for proper
operation once the ambient temperature is
above 80°F.
Air Flow
Table 4 - Performance Testing Air Flow Setpoints
Before completing startup and
leaving the unit a complete operating
cycle should be observed to verify
that all components are functioning
properly.
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