11
TABLE 4
LIQUID LINE SIZE — OUTDOOR UNIT ABOVE INDOOR COIL
NOTES:
* Standard line size. 1) This chart is applicable for condensing units. 2) Do not exceed 120 feet maximum vertical separation. 3) Always use the smallest liquid
line possible to minimum system charge. 4) Chart may be used to size horizontal runs.
TABLE 5
LIQUID LINE SIZE — OUTDOOR UNIT BELOW INDOOR COIL
NOTES:
* Standard line size. 1) This chart is applicable for condensing units. 2) This chart may also be used to size horizontal runs. 3) Do not exceed
vertical separation as indicated on the chart. 4) Always use the smallest liquid line possible to minimum system charge. 5) No changes required for flow-check
pistons or expansion valve coils.
LIQUID LINE SIZE - OUTDOOR UNIT ABOVE INDOOR COIL
TOTAL LENGTH - (ft)
25 50 75 100 125 150
25 50 70
36 42 48 54
25 50
24 34 44 54 64
25 50
19 33 47 61
11 15
25 50 70
34 40 46 52
25 50 75
32 39 46 53
25 44 53 61 70
37 39
25 48 61 72
35 38 41
1/4*
5/16
1/4*
5/16
1/4*
5/16
3/8
5/16*
3/8
5/16*
3/8
3/8*
1/2
3/8*
1/2
5/16
5/16
5/16
5/16
5/16
3/8
3/8
VERTICAL SEPARATION - (ft)
18
Line
Size
(Inch
O.D.)
Model
Liquid Line
Connection
Size (Inch
I.D.)
24
30
36
42
48
60
TOTAL LENGTH - (ft)
25 50 75 100 125 150
25 23 8
36 30 24 18
25 23
48 38 28 18 8
25 23
50 39 25 11
57
25 23 9
38 32 26 20
25 23 9
40 33 26 19
25 28 19 11 3
35 33
25 23 11 3
37 34 31
1/4*
5/16
1/4*
5/16
1/4*
5/16
3/8
5/16*
3/8
5/16*
3/8
3/8*
1/2
3/8*
1/2
5/16
5/16
5/16
5/16
5/16
3/8
3/8
VERTICAL SEPARATION - (ft)
18
Line
Size
(Inch
O.D.)
Model
Liquid Line
Connection
Size (Inch
I.D.)
24
30
36
42
48
60