Line Set Sizes - Geostar ASTON SERIES Installation Manual

ASTON INDOOR SPLIT SERIES INSTALLATION MANUAL
Refrigeration cont.
Determining Subcooling
1. Measure the temperature of the liquid line on the small refrigerant
line (liquid line) just outside the split cabinet. This location
will be adequate for measurement in both modes unless a
significant temperature drop in the liquid line is anticipated.
2. Measure the liquid line pressure by attaching refrigerant
gauges to the Schrader connection on the liquid line service
valve.
3. Convert the pressure obtained in Step 2 to the saturation
temperature by using the R-410A Pressure/Temperature
Conversion Chart.
4. Subtract the temperature in Step 1 from the temperature in
Step 3. The difference will be the subcooling value for that
unit. Refer to the Operating Parameters tables for subcooling
ranges at specific enter water conditions.

Line Set Sizes

Unit Air
Size Handler
022 GAH022
030 GAH030
036 GAH036
042 GAH042
048 GAH048
060 GAH060
070 GAH060
026 GAH026
038 GAH036
049 GAH048
064 GAH060
072 GAH060
NOTES: * The "Charge Amount with GAH Air Handler" column is based on the charge amount for a GAH Air Handler+Compressor Section/Split.
Additional charge will have to be added accordingly for line set length.
After Charge is added adjustments can be made to get appropriate subcooling and superheat.
Additional charge for R-410A is 0.50 oz. per ft. for 3/8 in. and 1.0 oz. per ft. for 1/2 in. tube.
20 feet
Suction Liquid Suction
5/8" OD 3/8" OD 5/8" OD
5/8" OD 3/8" OD 3/4" OD
5/8" OD 3/8" OD 3/4" OD
3/4" OD 3/8" OD 3/4" OD
3/4" OD 3/8" OD 7/8" OD
7/8" OD 1/2" OD 7/8" OD
7/8" OD 1/2" OD 7/8" OD
5/8" OD 3/8" OD 3/4" OD
3/4" OD 3/8" OD 3/4" OD
3/4" OD 3/8" OD 7/8" OD
7/8" OD 1/2" OD 7/8" OD
7/8" OD 1/2" OD 7/8" OD
40 feet 60 feet
Liquid Suction
3/8" OD 3/4" OD
3/8" OD 3/4" OD
3/8" OD 3/4" OD
3/8" OD 7/8" OD
3/8" OD 7/8" OD
1/2" OD 1-1/8" OD
1/2" OD 1-1/8" OD
3/8" OD 3/4" OD
3/8" OD 3/4" OD
3/8" OD 7/8" OD
1/2" OD 1-1/8" OD
1/2" OD 1-1/8" OD
30
*Charge Amount
Factory
with GAH Air
Charge (oz.)
Liquid
Handler (oz.)
3/8" OD 56
3/8" OD 56
1/2" OD 56
1/2" OD 74
1/2" OD 90
1/2" OD 92
1/2" OD 108
1/2" OD 52
1/2" OD 56
1/2" OD 90
1/2" OD 92
1/2" OD 104
78
78
86
99
115
112
132
74
86
115
112
132
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