036-21345-001-B-0105
8 Unitary Products Group
TABLE 7: LIQUID LINES
Model Designation
Nominal
Capacity (Tons)
Refrigerant Flow
Rate (Lbs./Min.)
Copper Tubing
(Inches, O.D.)
Refrigerant
Liquid Velocity
(Ft./Min.)
Friction Loss
(PSI/100 Ft.)
HA300 System #1 Full Capacity 25 80
5/8 500 14.2
7/8 265 3.4
1 1/8 156 1.0
HB360
System #1 Full Capacity 15 47
5/8 330 7.9
7/8 159 1.4
1 1/8 100 0.8
System #2 Full Capacity 15 47
5/8 330 7.9
7/8 159 1.4
1 1/8 100 0.8
HB480
System #1 Full Capacity 20 64
5/8 440 13.2
7/8 212 2.3
1 1/8 90 0.6
System #2 Full Capacity 20 64
5/8 440 13.2
7/8 212 2.3
1 1/8 90 0.6
HB600
System #1 Full Capacity 25 76
5/8 400 8.5
7/8 265 3.4
1 1/8 156 1.0
System #2 Full Capacity 25 76
5/8 400 8.5
7/8 265 3.4
1 1/8 156 1.0
TABLE 8: R-22 LINE CHARGE
1
LINE SET, O.D.
2
O.D., (INCHES) REFRIGERANT, LB/FT
LIQUID 7/8 0.236
SUCTION
1 5/8 0.019
2 1/8 0.033
1
Charges based on 40 ºF suction temperature and 105ºF liquid temperature.
2
Type “L” copper tubing.
NOTE: Add the operating charge of the condensing unit, the evaporator coil and the refrigerant lines to determine the total refrigerant
charge of the system.
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