En-12
Pipe selection
4. 2.
CAUTION
This unit is designed speci
fi
cally for use with the
•
R410A refrigerant.
Pipes for R407C or R22 may not be used with this
•
unit.
Do not use existing pipes.
•
Improper pipe selection will degrade performance.
•
A (Wall thickness and pipe material for each diameter)
Table.
Outside Diameter mm
6.35
9.52
12.70
15.88
19.05
22.22
28.58
34.92
41.27
Wall Thickness
*3
mm
0.8
0.8
0.8
1.0
1.2
1.0
1.0
1.2
1.43
Material
COPPER
*1
JIS H3300 C1220T-O or equivalent
COPPER
*2
JIS H 3300 C1220T-H or equivalent
Please select the pipe size in accordance with local rules.
B (Between outdoor unit to outdoor unit branch kit)
Table.
HP
Outdoor unit cooling
capacity (kW)
Outside diameter (mm)
Branch kit
*4
Liquid pipe
Gas pipe
8
22.4
12.70
22.22
UTR-
CP567X
10
28.0
12.70
22.22
12
33.5
12.70
28.58
14
40.0
12.70
28.58
16
45.0
12.70
28.58
Allowable tensile stress
*1.
>
=
33 (N/mm2)
Allowable tensile stress
*2.
>
=
61 (N/mm2)
Endurance pressure of the pipes 4.2MPa
*3.
For the installation method, refer to “5.4. Multiple
*4.
connections”.
C (Between outdoor unit branch kits or outdoor unit
Table.
branch kit to
fi
rst separation tube)
Total cooling capacity
of outdoor unit (kW)
Outside diameter (mm)
Liquid pipe
Gas pipe
22.4 to 28.0
12.70
22.22
28.1 to 45.0
12.70
28.58
45.1 to 56.0
15.88
28.58
56.1 to 80.0
15.88
34.92
80.1 to 96.0
19.05
34.92
96.1 or more
19.05
41.27
If the pipe diameter between separation
tubes (based on Table D) is larger than the
pipe diameter between outdoor unit branch
kit and the
fi
rst separation tube (based on
Table C), select the pipe whose diameter is
equal to the one between the outdoor unit
branch kit and the
fi
rst separation tube.
(If pipe diameter D > C, select pipe size from
table C)
Use a standard separation tube for pipe
branching. Do not use a T tube as it does
not separate the refrigerant evenly.
D (Between separation tubes)
Table.
Total cooling
capacity of
indoor unit (kW)
Outside diameter (mm)
Liquid pipe
Gas pipe
4.4 to 11.1
9.52
15.88
11.2 to 13.9
9.52
19.05
14.0 to 28.0
12.70
22.22
28.1 to 44.7
12.70
28.58
44.8 to 56.0
15.88
28.58
56.1 to 80.0
15.88
34.92
80.1 to 95.0
19.05
34.92
95.1 or more
19.05
41.27
E (Between separation tube to indoor unit)
Table.
Cooling capacity of
indoor unit (kW)
Outside diameter (mm)
Liquid pipe
Gas pipe
2.2, 2.8, 3.6, 4.0, 4.5
6.35
12.70
5.6, 7.1, 8.0, 9.0
9.52
15.88
11.2, 12.5, 14.0, 18.0
19.05
22.4, 25.0
12.70
22.22
F (Separation tube / Header)
Table.
Total cooling capacity
of indoor unit (kW)
Separation tube *5
Header *5
3-6 Branches 3-8 Branches
28.0 or less
UTR-BP090X
UTR-H0906L UTR-H0908L
28.1 to 56.0
UTR-BP180X
UTR-H1806L UTR-H1808L
56.1 or more
UTR-BP567X
—
—
For the installation method, refer to the installation
*5.
manuals for indoor unit piping connection, separa-
tion tubes, and header.
Master
unit
Slave
unit1
First separation
tube (optional)
Outdoor unit
branch
kit (optional)
Separation tube
(optional)
Pipe size
(table B)
Pipe size
(table C)
Pipe size
(table D)
Pipe size
(table E)
Slave
unit2
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
9378945029-03_IM_EN.indb 12
9378945029-03_IM_EN.indb 12
2011-9-20 16:25:48
2011-9-20 16:25:48
