Lennox Mini-Split Service Manual / Page 81
Maximum Line Set Length
Include ALL piping in measurement
2-zone 98 ft. (30 m)
3-Zone 148 ft. (45 m)
4-Zone 197 ft. (60 m)
5-Zone 246 ft. (75 m)
OUTDOOR UNIT
INDOOR UNIT
INDOOR UNIT
INDOOR UNIT
INDOOR UNIT
INDOOR UNIT
Maximum Line Set Length
Furthest Indoor Unit
2-zone 66 ft. (20 m)
3-Zone 82 ft. (25 m)
4-Zone 98 ft. (30 m)
4-Zone 98 ft. (30 m)
Maximum Line
Set Elevation
Indoor Units
Above Outdoor Unit
49 ft. (15 m)
Maximum Line
Set Elevation
Indoor Units
Below Outdoor Unit
33 ft. (10 m)
Maximum Line Set Elevation
Between Indoor Units
33 ft. (10 m)
A
B
C
D
Unit D
Unit D
Unit C
Unit B
Unit A
Unit C
Unit B
Unit A
wire
pipe
outdoor
indoor
L4(ft)
L3(ft)
L2(ft)
L1(ft)
Pipe and Wire Each Zone Separately
A(1/2in)
A(1/4in)
B(3/8in)
B(1/4in)
C(3/8in)
C(1/4in)
Connecting Multiple Capacity Indoor Units
Four-Zone System Example shown above
Five-Zone System Example shown