Fujitsu Airstage J-II Series Design & Technical Manual page 581

z Pipe size table "B"
„
(Between separation tube to separation tube (header))
Total cooling capacity of
indoor unit (Btu/h)
15,000 to 35,999
36,000 to 78,000
¾ If the selected pipe diameter between separation tubes (based on table "B") becomes larger
„
than the pipe diameter between outdoor unit and the first separation tube (based on table
"A"), select the pipe whose diameter is equal to the one between outdoor unit and the first
separation tube.
(If pipe diameter B > A, select pipe size from table A)
¾ "Total cooling capacity of indoor unit" is the total value for the cooling capacity of indoor unit
„
connected downstream.
z Pipe size table "C"
„
(Between separation tube (header) to indoor unit)
Cooling capacity
of indoor unit (Btu/h)
4,000, 7,500, 9,500, 12,000,
14,000
18,000, 24,000, 30,000,
34,000
36,000, 48,000
60,000
*1: If the selected pipe diameter between separation tube (header) to indoor unit (based on
table "C") becomes larger than the pipe diameter between separation tube to separation tube
(header) (based on table "B"), select the pipe whose diameter is equal to the one between
separation tube to separation tube (header).
(If pipe diameter C > B, select pipe size from table B)
It is necessary to change a connection pipe diameter using Reducer.
For connecting to 4/7/9/18/36/48TLAV1 models, reducer (locally purchased) is necessary.
For details of reducer diameter, refer to the table below.
Cooling capacity of
indoor unit (Btu/h)
4,000, 7,500, 9,500
18,000
34,000, 36,000, 48,000
Outside diameter
Liquid pipe
3/8" (9.52)
3/8" (9.52)
Outside diameter
Liquid pipe
1/4" (6.35)
3/8" (9.52)
3/8" (9.52)
3/8" (9.52)
Reducer diameter: in. (mm)
Liquid pipe
—
1/4" (6.35) → 3/8" (9.52)
—
- (06 - 17) -
in. (mm)
:
Gas pipe
5/8" (15.88)
3/4" (19.05)
in. (mm)
:
Gas pipe
1/2" (12.70)
5/8" (15.88)
3/4" (19.05)
3/4" (19.05)
Gas pipe
3/8" (9.52) → 1/2" (12.70)
1/2" (12.70) → 5/8" (15.88)
5/8" (15.88) → 3/4" (19.05)