Design and Technical Manual

6. SYSTEM DESIGN
Pipe size table "A"
z
(Between outdoor unit and rst separation tube)
Outside diameter mm (in.)
Liquid pipe Gas pipe
3/8" (9.52) 5/8" (15.88)
Pipe size table "B"
z
(Between rst separation tube and second separation tube)
Outside diameter mm (in.)
Liquid pipe Gas pipe
3/8" (9.52) 5/8" (15.88)
Pipe size table "C"
z
(Between separation tube and branch box)
Outside diameter mm (in.)
Liquid pipe Gas pipe
3/8" (9.52) 5/8" (15.88)
Pipe size table "D"
z
(Between branch box and indoor unit)
Model code of
indoor unit
Cooling capacity of
indoor unit (BTU/h)
Outside diameter mm (in.)
Liquid pipe Gas pipe
7, 9, 12 7000 to 12000 1/4" (6.35) 3/8" (9.52)
15, 18 14000 to 18000 1/4" (6.35) 1/2" (12.70)
24 24000 1/4" (6.35) 5/8" (15.88)
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SYSTEM DESIGN SYSTEM DESIGN