3
REFRIGERANT PIPING LENGTH LIMITATI ONS
Maximum Line Lengths:
The maximum allowable total equivalent length varies depending on the vertical separation. See the tables below for allowable lengths
depending on whether the outdoor unit is on the same level, above or below the outdoor unit.
Maximum Line Lengths
MAXIMUM ACTUAL LENGTH
ft (m)
MAXIMUM EQUIV ALENT LENGTH{
ft (m)
MAXIMUM VERTICAL SEP ARA-
TION ft (m)
Units on equal level 100 (30.5) 100 (30.5) N/A
Outdoor unit ABOVE
indoor unit
100 (30.5) 100 (30.5) 100 (30.5)
Outdoor unit BELOW
indoor unit
See Table ’Maximum Total Equivalent Length: Outdoor Unit BELOW Indoor Unit’
{ Total equivalent length accounts for losses due to elbows or fitting. See the Long Line Guideline for details.
Maximum Total Equivalent Length
{
-- Outdoor Unit BELOW Indoor Unit
Size
Liquid Line
Diameter
w/ TXV
HP with Puronr Refrigerant --- Maximum Total Equivalent Length{
Vertical Separation ft (m) Outdoor unit BELOW indoor unit;
0 --- 2 0
(0 --- 6.1)
21---30
(6.4 --- 9.1)
31---40
(9.4 --- 12.2)
41---50
(12.5 --- 15.2)
51---60
(15.5 --- 18.3)
61---70
(18.6 --- 21.3)
71---80
(21.6 --- 24.4)
1 --- To n 3/8 100* 100* 100* 100* 100* 100* 100*
2 --- To n 3/8 100* 100* 100* 100* 100* 100* 100*
3 --- To n 3/8 100* 100* 100* 100* 100* 100* 100*
4 --- To n 3/8 100* 100* 100* 100* 100 100 --- ---
5 --- To n 3/8 100* 100* 100* 100* 100 100 --- ---
* Maximum actual length not to exceed 100 ft (30.5 m)
{ Total equivalent length accounts for losses due to elbows or fitting.
--- --- = o u t s i d e a c c e p t a b l e r a n g e
LONG LINE APPLICATIONS
Unit is approved for up to 100 ft (30.5 m) equivalent length and vertical separations shown above with no additional accessories.
Longer line set applications are not permitted.