Pipe Size - Fujitsu AIRSTAGE J-II Design & Technical Manual

2-3.

PIPE SIZE

PIPE DIAMETER, RECOMMENDED MATERIAL AND WALL THICKNESS
„ „
Nominal Diameter (in)
Outside Diameter (mm)
Material
Wall Thickness *2 (mm)
*1: Allowable tensile stress ≥ 33 (N/mm
*2: Endurance pressure of the pipe must be 4.2 MPa
Please select the pipe size in accordance with regional standard.
PIPE SIZE SELECTION
„ „
Caution
●
„
After referring to "COOLING CAPACITY TABLE" followed, select each Pipe size, Separation
tube and Header from "COOLING CAPACITY TABLE" of outdoor unit and Indoor unit
connected in the system.
Pipe size table "A"
z „
(Between outdoor unit and the first seperation tube (header))
Outdoor
Model
HP unit cooling
code
capacity (kW)
4 40 12.1
5 45 14.0
6 54 15.5
1/4" 3/8" 1/2"
6.35 9.52 12.70
JIS H3300 C1220T-O or equivalent *1
0.8 0.8 0.8
2
)
Outdoor
unit
First separation tube (optional)
Between outdoor unit and the
farthest indoor unit < 90m
Liquid pipe
9.52 (3/8")
9.52 (3/8")
9.52 (3/8")
5/8" 3/4"
15.88 19.05
1.0 1.2
.
separation tube (optional)
header (optional)
Outside diameter mm (in)
Between outdoor unit and the
Gas pipe
15.88 (5/8")
15.88 (5/8")
19.05 (3/4")
- (06 - 17) -
Pipe size
(table"A")
Pipe size
(table"B")
Pipe size
(table"C")
farthest indoor unit ≥ 90m
Liquid pipe Gas pipe
9.52 (3/8") 19.05 (3/4")
9.52 (3/8") 19.05 (3/4")
9.52 (3/8") 19.05 (3/4")