Fujitsu AIRSTAGE J-IIIL Design & Technical Manual page 551

• Selection of pipe size
Pipe no.
a
a1
b
b1
c
c1
d
d1
e
e1
f
f1
g
g1
h
• Limitation check
Total pipe length
Between outdoor unit and farthest indoor
unit
Between the first separation tube and the
farthest indoor unit
Between outdoor unit and the nearest
indoor unit
Between outdoor unit and the first
separation tube
2-6. Piping design example
Liquid pipe
Ø3/8 (9.52)
Ø1/4 (6.35)
Ø1/2 (12.70)
Ø1/4 (6.35)
Ø1/2 (12.70)
Ø1/4 (6.35)
Ø1/2 (12.70)
Ø1/4 (6.35)
Ø3/8 (9.52)
Ø1/4 (6.35)
Ø3/8 (9.52)
Ø1/4 (6.35)
Ø3/8 (9.52)
Ø1/4 (6.35)
Ø1/4 (6.35)
Pipe
a + b + c + d + e + f
b + c + d + e + f + g
Pipe diameter: in (mm)
Gas pipe
Ø3/4 (19.05)
Ø1/2 (12.70)
Ø7/8 (22.22)
Ø1/2 (12.70)
Ø7/8 (22.22)
Ø1/2 (12.70)
Ø3/4 (19.05)
Ø1/2 (12.70)
Ø3/4 (19.05)
Ø1/2 (12.70)
Ø5/8 (15.88)
Ø1/2 (12.70)
Ø5/8 (15.88)
Ø1/2 (12.70)
Ø3/8 (9.52)
Example
Diagram
Total 498 (152)
252 (77)
+ g + h
121 (37)
+ h
a + a1 180 (55)
a 131 (40)
- (06-29) -
Length example
ft (m)
131 (40)
49 (15)
16 (5)
32 (10)
16 (5)
32 (10)
16 (5)
32 (10)
16 (5)
32 (10)
16 (5)
32 (10)
16 (5)
32 (10)
22 (7)
Limitation
Judge
ft (m)
1,312 (400)
OK
or less
393 (120)
OK
or less
295 (90)
OK
or less
17 (5)
OK
or more
10 (3)
OK
or more
2. Piping design