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3) Piping length and the elevation
Pipe Size
Capacity
(Diameter:Ø)
Gas
18 kBtu/h
1/2 "(12.7 mm)
24 kBtu/h
1/2 "(12.7 mm)
30 kBtu/h
5/8 "(15.88 mm)
Indoor unit
A
B
Outdoor unit
CAUTION:
• Rated performance for refrigerant line length of:7.5 m
• Capacity is based on standard length and maximum allowance length is on
the basis of reliability.
• Improper refrigerant charge may result in abnormal cycle.
• Oil trap should be installed every 10 meters.
Length A(m)
Liquid
Standard
1/4 "(6.35 mm)
7.5
1/4 "(6.35 mm)
7.5
1/4 "(6.35 mm)
7.5
Indoor unit
Installation of Indoor, Outdoor Unit
Elevation B(m)
Max.
Standard
Max.
50
5
50
5
50
5
Outdoor unit
A
B
Indoor unit
*Additional
refrigerant(g/m)
30
35
30
35
30
35
Outdoor unit
A
Oil trap
B
Installation Manual 7
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