PIPE SIZE2-3.
PIPE DIAMETER, RECOMMENDED MATERIAL AND WALL THICKNESS
Nominal Diameter (in) 1/4" 3/8" 1/2" 5/8" 3/4"
Outside Diameter (mm) 6.35 9.52 12.70 15.88 19.05
Material JIS H3300 C1220T-O or equivalent *1
Wall Thickness *2 (mm) 0.8 0.8 0.8 1.0 1.2
*1: Allowable tensile stress ≥ 33 (N/mm
2
)
*2: Endurance pressure of the pipe must be 4.2 MPa
.
Please select the pipe size in accordance with regional standard.
Outdoor
unit
First separation tube (optional)
separation tube (optional)
Pipe size
(table"A")
Pipe size
(table"B")
Pipe size
(table"C")
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 rst seperation tube (header))
HP
Model
code
Outdoor
unit cooling
capacity (kW)
Outside diameter mm (in)
Between outdoor unit and the
farthest indoor unit < 90m
Between outdoor unit and the
farthest indoor unit ≥ 90m
Liquid pipe Gas pipe Liquid pipe Gas pipe
4 40 12.1 9.52 (3/8") 15.88 (5/8") 9.52 (3/8") 19.05 (3/4")
5 45 14.0 9.52 (3/8") 15.88 (5/8") 9.52 (3/8") 19.05 (3/4")
6 54 15.5 9.52 (3/8") 19.05 (3/4") 9.52 (3/8") 19.05 (3/4")
header (optional)
- (06 - 17) -
SYSTEM
DESIGN
SYSTEM
DESIGN
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