13
L
IQUID LINE SIZE - OUTDOOR UNIT ABOVE INDOOR COIL
R-410A
System
Capacity
Model
Line Size
Connection
Size (Inch
I.D.) [mm]
Line Size
(Inch O.D.)
[mm]
Minimum Vertical Separation - Feet [m]
1/4” [6.35]* 0010 [3.05] 34 [10.36] 58 [17.68] 82 [24.99]
-024 3/8” [9.53] 5/16” [7.93] 000000
3/8” [9.52] 000000
5/16” [7.93] 006 [1.83] 14 [4.27] 21 [6.40] 28 [8.53]
-036 3/8” [9.53] 3/8” [9.52]* 00 0000
1/2” [12.70] 000000
5/16” [7.93]* 000010 [3.05] 24 [7.32]
-039 3/8” [9.53] 3/8” [9.52] 00 0000
1/2” [12.70] 000000
5/16” [7.93]* 00018 [5.49] 40 [12.19] 62 [18.90]
-048 3/8” [9.53]
3/8” [9.52] 000000
1/2” [12.70] 000000
-060 3/8” [9.53]
3/8” [9.52]* 000000
1/2” [12.70] 000000
25 [7.62] 50 [15.24] 75 [22.86] 100 [30.48] 125 [38.1] 150 [45.72]
Liquid Line Size
Outdoor Unit Above Indoor Coil (Cooling Only - Does not apply to Heat Pumps)
Total Equivalent Length - Feet [m]
LIQUID LINE SIZE - OUTDOOR UNIT BELOW INDOOR COIL
R-410A
System
Capacity
Model
Line Size
Connection
Size (Inch
I.D.) [mm]
Line Size
(Inch O.D.)
[mm]
Maximum Vertical Separation - Feet [m]**
1/4” [6.35]* 25 [11.28] 13 [3.96] N/A N/A N/A N/A
-024 3/8” [9.53] 5/16” [7.93] 25 [14.33] 44 [13.41] 40 [12.19] 36 [10.97] 30 [9.14] 24 [7.32]
3/8” [9.52] 25 [15.24] 48 [14.63] 47 [14.33] 46 [14.02] 45 [13.72] 43 [13.11]
5/16” [7.93] N/A N/A N/A N/A N/A N/A
-036 3/8” [9.53] 3/8” [9.52]* 12 [3.66] 9 [2.74] N/A N/A N/A N/A
1/2” [12.70] 14 [4.27] 13 [3.96] 13 [3.96] 12 [3.66] 12 [3.66] 11 [3.35]
5/16” [7.93]* 15 [4.57] 11 [3.35] N/A N/A N/A N/A
-039 3/8” [9.53] 3/8” [9.52] 18 [5.49] 17 [5.18] 15 [4.57] 13 [3.96] 12 [3.66] 10 [3.05]
1/2” [12.70] 20 [6.10] 19 [5.79] 19 [5.79] 19 [5.79] 18 [5.49] 18 [5.49]
5/16” [7.93]* 25 [10.36] 24 [7.32] N/A N/A N/A N/A
-048 3/8” [9.53] 3/8” [9.52] 25 [11.89] 36 [10.97] 34 [10.36] 32 [9.75] 29 [8.84] 23 [7.01]
1/2” [12.70] 25 [12.50] 40 [12.19] 40 [12.19] 39 [11.89] 39 [11.89] 38 [11.58]
3/8” [9.52]* 25 [11.28] 33 [10.06] 30 [9.14] 25 [7.62] 15 [4.57] N/A
-060 3/8” [9.53]
1/2” [12.70] 25 [11.89] 39 [11.89] 38 [11.58] 37 [11.28] 37 [11.28] 36 [10.97]
25 [7.62] 50 [15.24] 75 [22.86] 100 [30.48] 125 [38.1] 150 [45.72]
Liquid Line Size
Outdoor Unit Below Indoor Coil
Total Equivalent Length - Feet [m]
TABLE 4
(-)ASL LIQUID LINE SIZING
NOTES: N/A = Application Not Recommended
*Standard Line Size
NOTES: N/A = Application Not Recommended
*Standard Line Size
**Maximum vertical separation listed in table can be exceeded if system is charged to 8°-10°F
liquid subcooling level at the indoor coil. A gauge port must be added to the liquid line near the
indoor coil to measure subcooling at that point.
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