Technical Publication

8
25 50 75 100 125 150 175 200 225 250
1/2 0.990.970.960.940.940.930.930.920.910.89
5/8 1.000.990.990.990.980.980.980.980.970.97
3/ 4
1. 00
1. 00 1.00 1. 00 0.99 0.99 0. 99 0. 99 0. 99 0. 99
5/8 0.990.990.980.980.970.970.970.960.950.95
3/ 4
1. 00
1. 00 0.99 0.99 0.99 0. 99 0. 99 0. 99 0. 97 0. 97
7/8
2
1. 00 1. 00 1. 00 1.00 0.99 0. 99 0. 99 0. 99 0. 99 0. 99
5/8 0.990.990.980.970.960.960.960.940.930.92
3/ 4
1. 00
1. 00 0.99 0.99 0.99 0. 98 0. 88 0. 98 0. 98 0. 97
7/8 1.001.001.001.001.000.990.990.990.990.99
5/8 0.990.980.960.950.940.930.920.910.900.88
3/4 1.001.000.990.990.980.980.970.970.960.96
7/8
3
1. 00
1. 00 1.00 1.00 0.99 0. 99 0. 99 0. 99 0. 98 0. 98
3/4 1.000.990.990.980.970.970.960.960.950.94
7/8 1.001.000.990.990.990.990.980.980.980.97
1 1/8
1. 00
1. 00 1.00 1.00 1.00 1. 00 1. 00 1. 00 1. 00 1. 00
3/4 0.990.990.980.970.960.960.950.950.940.93
7/8 1.000.990.990.990.980.980.980.980.970.97
1 1/8
4
1. 00
1. 00 1.00 1.00 1.00 1. 00 1. 00 1. 00 0. 99 0. 99
3/4 0.990.980.970.960.940.930.930.910.900.89
7/8 1.000.990.980.980.970.970.960.940.950.95
1 1/8
4
1. 00
1. 00 1.00 0.99 0.99 0. 99 0. 99 0. 99 0. 99 0. 99
48000
60000
24000
30000
36000
42000
Unit
(Btu)
Suction
Dia. (in)
Capacity Multiplier for Given Length (ft)
1
18000
Table 5-3. Capacity Multipliers (feet)
1
Equivalent length is to be used for capacity multiplier reduction.
2
7/8” suction line is not approved for 2-ton two stage heat pump applications.
3
7/8” suction line is not approved for 3-ton two stage heat pump applications over 80 feet.
4
1-1/8 suction line is not approved for 4-ton and 5-ton two stage heat pump applications over 80 feet.
7.6 15.2 22.9 30.5 38.1 45.7 53.3 61.0 68.6 76.2
1/2 0.990.970.960.940.940.930.930.920.910.89
5/8 1.000.990.990.990.980.980.980.980.970.97
3/4
1.00
1.00 1.00 1.00 0.99 0.99 0.99 0.99 0.99 0.99
5/8 0.990.990.980.980.970.970.970.960.950.95
3/4
1.00
1.00 0.99 0.99 0.99 0.99 0.99 0.99 0.97 0.97
7/8
2
1.00 1.00 1.00 1.00 0.99 0.99 0.99 0.99 0.99 0.99
5/8 0.990.990.980.970.960.960.960.940.930.92
3/4
1.00
1.00 0.99 0.99 0.99 0.98 0.88 0.98 0.98 0.97
7/8 1.001.001.001.001.000.990.990.990.990.99
5/8 0.990.980.960.950.940.930.920.910.900.88
3/4 1.001.000.990.990.980.980.970.970.960.96
7/8
3
1.00
1.00 1.00 1.00 0.99 0.99 0.99 0.99 0.98 0.98
3/4 1.000.990.990.980.970.970.960.960.950.94
7/8 1.001.000.990.990.990.990.980.980.980.97
1 1/8
1.00
1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
3/4 0.990.990.980.970.960.960.950.950.940.93
7/8 1.000.990.990.990.980.980.980.980.970.97
1 1/8
4
1.00
1.00 1.00 1.00 1.00 1.00 1.00 1.00 0.99 0.99
3/4 0.990.980.970.960.940.930.930.910.900.89
7/8 1.000.990.980.980.970.970.960.940.950.95
1 1/8
4
1.00
1.00 1.00 0.99 0.99 0.99 0.99 0.99 0.99 0.99
42000
48000
60000
Unit
(Btu)
Suction
Dia. (in)
Capacity Multiplier for Given Length (m)
1
18000
24000
30000
36000
Table 5-4. Capacity Multipliers (meters)