Data Aire gForce Ultra Installation, Operation And Maintenance Manual page 41

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.
GUAX-022XX
GUAX-036XX
GUAX-045XX
GUAX-070XX
GUAX-091XX
GUAX-125XX
Step 2: Since the majority of refrigerant weight is in liquid form in the liquid line,
refrigerant in the hot gas line and suction line is ignored in the charging calculation.
Calculate the total of the liquid line run, then multiply the equivalent feet of line based on
line size by the correct multiplier to get the refrigerant weight needed for the Line-set.
Liquid Line OD (inches)
Example: If the liquid line of an R-410A system is 150ft of 1-1/8" pipe, then multiply
150 * 0.38 = 57lbs
Step 3: Select model and refrigerant charge of receiver based on condenser size
and circuit type
Weight of Refrigerant per Standard Liquid Receiver (lbs.)
Receiver Type
GHRC 011-039
GHRC 053-074
GHRC 025-074
GHRC 083-130
GHRC 141-215
GHRC 264-352
Weight of Refrigerant in Evap + Condenser
Model
Weight of Refrigerant in Liquid Line (lbs. /ft.)
1/2"
5/8"
3/4"
7/8"
1 1/8"
Note: Charge Weight calculated at 77F (25C).
Condenser Circuit type
Starting Charge (lbs.)
NA
NA
NA
25
32.5
37.5
Multiplier
.067
.107
.160
.223
.380
Lbs. of Refrigerant
Single
Single
Dual
Dual
Dual
Dual
41
29
55
29
55
93
143