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27
Unit
Size
Air
Handler
20 feet
40 feet
60 feet
Factory
Charge (oz.)
*Charge
Amount with
YAH Air
Handler (oz.)
Suction
Liquid
Suction
Liquid
Suction
Liquid
026
YAH026
5/8” OD
3/8” OD
3/4” OD
3/8” OD
3/4” OD
1/2” OD
52
74
038
YAH036
3/4” OD
3/8” OD
3/4” OD
3/8” OD
3/4” OD
1/2” OD
56
86
049
YAH048
3/4” OD
3/8” OD
7/8” OD
3/8” OD
7/8” OD
1/2” OD
90
115
064
YAH060
7/8” OD
1/2” OD
7/8” OD
1/2” OD
1-1/8” OD
1/2” OD
92
112
072
YAH060
7/8” OD
1/2” OD
7/8” OD
1/2” OD
1-1/8” OD
1/2” OD
104
132
4/16/10
NOTES:
* The “Charge Amount with YAH Air Handler” column is based on the charge amount for an YAH Air H
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.
Refrigeration cont.
Line Set Sizes
AFFINITY DUAL-CAPACITY OUTDOOR SPLIT SERIES INSTALLATION MANUAL
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 Pressure Temperature Conversion
Chart for R-410A.
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.