035-18575-001-A-1102
14
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
435
32.5
7/8
300
5.6
1 1/8
176
1.6
Half Capacity
12.5
40
5/8
218
9.1
7/8
150
1.6
1 1/8
88
0.5
HB360
System #1
Full Capacity
15
47
5/8
256
12.5
7/8
176
2.2
1 1/8
104
0.6
Half Capacity
7.5
23.5
5/8
128
3.5
7/8
88
0.6
1 1/8
52
0.2
System #2
Full Capacity
15
47
5/8
256
12.5
7/8
176
2.2
1 1/8
104
0.6
Half Capacity
7.5
23.5
5/8
128
3.5
7/8
88
0.6
1 1/8
52
0.2
HB480
System #1
Full Capacity
20
64
5/8
348
22.1
7/8
240
3.9
1 1/8
141
1.1
Half Capacity
10
32
5/8
174
6.2
7/8
120
1.0
1 1/8
70
0.3
System #2
Full Capacity
20
64
5/8
348
22.1
7/8
240
3.9
1 1/8
141
1.1
Half Capacity
10
32
5/8
174
6.2
7/8
120
1.0
1 1/8
70
0.3
HB600
System #1
Full Capacity
25
76
5/8
413
29.3
7/8
285
5.0
1 1/8
167
1.4
Half Capacity
12.5
38
5/8
207
8.3
7/8
143
1.4
1 1/8
84
0.4
System #2
Full Capacity
25
76
5/8
413
29.3
7/8
285
5.0
1 1/8
167
1.4
Half Capacity
12.5
38
5/8
207
8.3
7/8
143
1.4
1 1/8
84
0.4
TABLE 8: R-22 LINE CHARGE
*
LINE SET, O.D.
†
O.D., (INCHES)
REFRIGERANT, LB/FT
LIQUID
7/8
0.236
SUCTION
1 5/8
0.019
2 1/8
0.033
*.
Charges based on 40 ºF suction temperature and 105ºF liquid temperature.
†.
Type “L” copper tubing.
NOTE: Add the operating charge of the condensing unit, evaporator coil and 25 feet of interconnecting piping to any additional piping
refrigerant charge required (determined from Table 8) for total system charge.
