44
190 117 58
200 123 61
210 129 64
220 135 67
230 141 71
240 147 74
250 153 77
NOTE: Charging to a full liquid line sight glass should never be the sole
means of determining the correct refrigerant charge. Other parameters such
as superheat, suction pressure, head pressure, sub-cooling and ambient
temperature are also important. A system charged to a clear sight glass is
often overcharged.
When charging is complete, close the valve on the refrigerant manifold set, switch “Cool 2” and
“Blower” slide switches back to OFF position on manual bypass board, and close the service valve on
the refrigerant tank and remove the manifold set.
5.5.2 Variable Capacity Compressor
NOTE: Prior to refrigerant charging, a system vacuum and moisture removal
procedure must have been carried out. Refer to Section 5.2 for evacuation
procedures prior to charging the system.
WARNING: The compressor power must be OFF and safeties ON and pre-
vented from starting inadvertently/automatically
See the tables for the appropriate charging
1. After the system has been properly evacuated. Calculate the proper charge by following
the steps of the tables below.
Add the amount of refrigerant needed for the evaporator & condenser + the line-set
then multiply by .80.
Step 1: Select the model and refrigerant charge for evaporator and condenser.
Weight of Refrigerant in Evap + Condenser
Model Starting Charge (lbs.)
GUAX-022XX 15
GUAX-036XX
25
GUAX-045XX
32.5
GUAX-070XX
25
GUAX-091XX
32.5
GUAX-125XX
37.5
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