R-410A System
Capacity Model
Vapor Line
Connection Size
(Inch I.D.) [mm]
Vapor Line Size
(Inch O.D.) [mm]
Vapor Line Selection Chart
Capacity Multiplier Table
Total Equivalent Length - Feet [m]
25 [7.62] 50 [15.24] 75 [22.86] 100 [30.48] 125 [45.72] 150 [45.72] 175 [53.34] 200 [60.96] 225 [68.58] 250 [76.20] 275 [83.82] 300 [91.44]
18 3/4" [19.06]
5/8 [15.88]
1.00 0.99 0.99 0.98 0.98 0.98 0.97 0.97 0.96 0.96 0.96 0.95
3/4 [19.05]
1.00 1.00 1.00 1.00 1.00 0.99 0.99 0.99 0.99 0.99 0.99 0.99
7/8 [22.23]
N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R
1 [25.4]
N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R
1-1/8 [28.58]
N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R
24 3/4" [19.06]
5/8 [15.88]
1.00 0.99 0.99 0.98 0.98 0.98 0.97 0.97 0.96 0.96 0.96 0.95
3/4 [19.05]
1.00 1.00 1.00 1.00 1.00 0.99 0.99 0.99 0.99 0.99 0.99 0.99
7/8 [22.23]
1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
1 [25.4]
N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R
1-1/8 [28.58]
N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R
30 3/4" [19.06]
5/8 [15.88]
1.00 0.99 0.99 0.98 0.98 0.98 0.97 0.97 0.96 0.96 0.96 0.95
3/4 [19.05]
1.00 1.00 1.00 1.00 1.00 0.99 0.99 0.99 0.99 0.99 0.99 0.99
7/8 [22.23]
1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
1 [25.4]
1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.01 1.01 1.01
1-1/8 [28.58]
N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R
36 3/4" [19.06]
5/8 [15.88]
1.00 0.99 0.99 0.98 0.98 0.98 0.97 0.97 0.96 0.96 0.96 0.95
3/4 [19.05]
1.00 1.00 1.00 1.00 1.00 0.99 0.99 0.99 0.99 0.99 0.99 0.99
7/8 [22.23]
1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
1 [25.4]
1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.01 1.01 1.01
1-1/8 [28.58]
1.00 1.00 1.00 1.00 1.00 1.00 1.01 1.01 1.01 1.01 1.01 1.01
42 7/8" [22.23]
5/8 [15.88]
1.00 0.99 0.99 0.98 0.98 0.98 0.97 0.97 0.96 0.96 0.96 0.95
3/4 [19.05]
1.00 1.00 1.00 1.00 1.00 0.99 0.99 0.99 0.99 0.99 0.99 0.99
7/8 [22.23]
1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
1 [25.4]
1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.01 1.01 1.01
1-1/8 [28.58]
1.00 1.00 1.00 1.00 1.00 1.00 1.01 1.01 1.01 1.01 1.01 1.01
48 7/8" [22.23]
5/8 [15.88]
1.00 0.99 0.99 0.98 0.98 0.98 0.97 0.97 0.96 0.96 0.96
N/R
3/4 [19.05]
1.00 1.00 1.00 1.00 1.00 0.99 0.99 0.99 0.99 0.99 0.99
N/R
7/8 [22.23]
1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
N/R
1 [25.4]
1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.01 1.01
N/R
1-1/8 [28.58]
N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R N/R
60 7/8" [22.23]
5/8 [15.88]
1.00 0.99 0.99 0.98
N/R N/R N/R N/R N/R N/R N/R N/R
3/4 [19.05]
1.00 1.00 1.00 1.00
N/R N/R N/R N/R N/R N/R N/R N/R
7/8 [22.23]
1.00 1.00 1.00 1.00
N/R N/R N/R N/R N/R N/R N/R N/R
1 [25.4]
1.00 1.00 1.00 1.00
N/R N/R N/R N/R N/R N/R N/R N/R
1-1/8 [28.58]
1.00 1.00 1.00 1.00
N/R N/R N/R N/R N/R N/R N/R N/R