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Installation Manual 9
Installation of Indoor, Outdoor Unit
Multi-Zone Piping Recommendations:
Piping length and elevation
18K BTU/h 30 m (100 ft) 15 m (50 ft) 3 m (10 ft) 7.5 m (25 ft) 7.5 m (25 ft)
24K BTU/h 30 m (100 ft) 15 m (50 ft) 3 m (10 ft) 7.5 m (25 ft) 7.5 m (25 ft)
36K BTU/h 45 m (150 ft) 15 m (50 ft) 3 m (10 ft) 7.5 m (25 ft) 7.5 m (25 ft)
Capacity
Max total length
of all pipes
(A+B/A+B+C)
Max length of
each pipe
(A/B/C)
Min length of
each pipe
(A/B/C)
Max Elevation
between each
indoor unit and
outdoor unit (h1)
Max elevation
between indoor
units (h2)
h2
h2
h1
A
B
B
C
h2
h1
A
B
h1
h1
h1
CAUTION: Capacity is based on standard length and maximum allowance
length based on reliability.
9K BTU/h 9.52 mm (3/8") 6.35 mm (1/4") 7.5 m (25 ft) 20 g/m (0.22 oz/ft)
12K BTU/h 9.52 mm (3/8") 6.35 mm (1/4") 7.5 m (25 ft) 20 g/m (0.22 oz/ft)
Gas (Flare) Liquid (Flare) Standard Length
Additional
Refrigerant
Indoor Capacity
Pipe Size
18/24K BTU/h
36K BTU/h