15
4.0 INSTALLATION
< 8
8-15
16-23
24-30
31-38
39-46
6.35 [1/4]
15.88 [5/8]
8 / 0.99
15 / 0.98
9 / 0.97
0 / 0.97
NR
NR
7.94 [5/16]
15.88 [5/8]
8 / 0.99
15 / 0.98
15 / 0.97
15 / 0.97
15 / 0.96
15 / 0.95
9.53 [3/8]
15.88 [5/8]
8 / 0.99
15 / 0.99
15 / 0.97
15 / 0.97
15 / 0.96
15 / 0.95
6.35 [1/4] 19.05 [3/4] *
8 / 1.00
15 / 0.99
9 / 0.99
0 / 0.99
NR
NR
7.94 [5/16] 19.05 [3/4] *
8 / 1.00
15 / 0.99
15 / 0.99
15 / 0.99
15 / 0.98
15 / 0.98
9.53 [3/8] 19.05 [3/4] *
8 / 1.00
15 / 0.99
15 / 0.99
15 / 0.99
15 / 0.98
15 / 0.98
7.94 [5/16]
15.88 [5/8]
8 / 0.99
15 / 0.97
15 / 0.95
15 / 0.93
9 / 0.91
NR
9.53 [3/8]
15.88 [5/8]
8 / 0.99
15 / 0.97
15 / 0.95
15 / 0.93
15 / 0.91
NR
7.94 [5/16]
19.05 [3/4]
8 / 1.00
15 / 0.99
15 / 0.99
15 / 0.98
9 / 0.97
4 / 0.96
9.53 [3/8]
19.05 [3/4]
8 / 1.00
15 / 0.99
15 / 0.99
15 / 0.98
15 / 0.97
15 / 0.96
12.7 [1/2]
19.05 [3/4]
8 / 1.00
15 / 0.99
15 / 0.99
15 / 0.98
15 / 0.97
15 / 0.96
9.53 [3/8]
19.05 [3/4]
8 / 0.99
15 / 0.98
15 / 0.97
15 / 0.95
15 / 0.94
15 / 0.92
12.7 [1/2]
19.05 [3/4]
8 / 0.99
15 / 0.98
15 / 0.97
15 / 0.95
15 / 0.94
15 / 0.92
9.53 [3/8]
22.23 [7/8]
8 / 1.00
15 / 0.99
15 / 0.99
15 / 0.98
15 / 0.98
15 / 0.97
12.7 [1/2]
22.23 [7/8]
8 / 1.00
15 / 0.99
15 / 0.99
15 / 0.98
15 / 0.98
15 / 0.97
9.53 [3/8]
19.05 [3/4]
8 / 0.99
15 / 0.96
15 / 0.94
15 / 0.92
NR
NR
12.7 [1/2]
19.05 [3/4]
8 / 0.99
15 / 0.96
15 / 0.94
15 / 0.92
NR
NR
9.53 [3/8]
22.23 [7/8]
8 / 1.00
15 / 0.99
15 / 0.98
15 / 0.97
14 / 0.96
9 / 0.95
12.7 [1/2]
22.23 [7/8]
8 / 1.00
15 / 0.99
15 / 0.98
15 / 0.97
15 /0.96
15 / 0.95
Notes:
1) Do not exceed 46 meters linear line length.
2) Do not exceed 15 meters ver
ti
cal separa
ti
on between indoor and outdoor units.
unit to assure proper oil return.
4) Always use the smallest liquid line allowable to minimize refrigerant charge.
5) Applica
ti
ons shaded in light gray indicate capacity mul
ti
pliers between 0.90 and 0.96 which are not
recommended, but are allowed.
6) Applica
ti
ons shaded in dark gray are not recommended due to excessive liquid or suc
ti
on pressure drop.
7.0 KW
[2.0 Ton]
*
SEE
NOTE 3
10.6 KW
[3 Ton]
14.1 KW
[4 Ton]
17.6 KW
[5 Ton]
Table 2B: Refrigerant Line Sizing Chart (Metric Units)
17 SEER 3-Stage Heat Pumps
Unit Size
Allowable
Liquid Line
Size
mm [in.]
Allowable
Vapor Line
Size
mm [in.]
Outdoor Unit ABOVE or BELOW Indoor Unit
Equivalent Length (Meters)
Maximum Ver
ti
cal Separa
ti
on / Capacity Mul
ti
plier
3) * 19.05 mm [3/4"] vapor line should only be used for 2 ton systems if outdoor unit is below or at same level as indoor
