En-8
• Header
Total cooling capacity of indoor unit (kW)
Header *5
3-6 Branches
3-8 Branches
28.0 or less
UTR-H0906L
UTR-H0908L
28.1 to 56.0
UTR-H1806L
UTR-H1808L
*5. For the installation method, refer to the section on "Indoor unit pipe connections"
below.
Table. F (Indoor unit capacity comparison table - The indication of power is dif-
ferent depending on the model.)
Model code of
indoor unit
Capacity
[kW]
Model code of
indoor unit
Capacity
[kW]
04
1.1
34
10.0
07
2.2
36
11.2
09
2.8
45
12.5
12
3.6
54
14.0
14
4.5
60
18.0
18
5.6
72
22.4
24
7.1
90
25.0
30
9.0
96
28.0
In the case of ARXD07GALH: equivalent to model code of indoor unit
Model
code
07
→
Capacity = 2.2kW
• Outdoor
air
unit
Connectable unit within 1 refrigerant system
Unit
Connectable cooling
capacity range
Remarks
Only Outdoor air unit
50% to 100%
-
Outdoor air unit
+ Indoor unit
50% to 100%
The capacity of "Outdoor air
unit" should be less than 30%
of the outdoor unit capacity.
4. 3. Downsizing of pipe diameter
Note: Reducers are
fi
eld supplied.
• Downsizing of the liquid and gas pipe can be done in "4.2 Pipe selection", if pipe
length is limited as below in "4.1 System con
fi
guration".
• Allowable
downsizing
are
indicated
by
"
→
" in table A2, B2, C2, D2.
O.U.-1
(Master)
O.U.-2
(Slave)
O.U. : Outdoor unit
I.U. : Indoor unit
I.U.
I.U.
I.U.
I.U.
I.U.
I.U.
I.U.
I.U.
I.U.
a
e
f
g
h
i
p
o
l
m
n
j
k
H
b
Master
unit
Slave
unit1
First separation
tube (optional)
Outdoor unit
branch kit
(optional)
Separation tube
(optional)
Pipe size
(table A2)
Pipe size
(table B2)
Pipe size
(table C2)
Pipe size
(table D2)
Slave
unit2
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
A (between outdoor unit and outdoor unit branch kit)
• Allowable pipe length (actual pipe length)
Between master out door unit and the
farthest indoor unit
70 m or less
a (+e)+f,
a (+e)+p
Between outdoor unit and indoor unit (When
outdoor unit is installed below)
* Only when the size of the liquid pipe goes
down
5 m or less
H
* (+e): applies to multiple outdoor units connections.
Table. A2
HP
Outdoor unit
cooling
capacity (kW)
Outside diameter (mm)
Liquid pipe
Gas pipe
8
22.4
12.70 (1/2")
→
9.52(3/8")
22.22 (7/8")
→
19.05 (3/4")
10
28.0
12.70 (1/2")
→
9.52 (3/8")
22.22 (7/8")
12
33.5
12.70 (1/2")
28.58 (1-1/8")
14
40.0
12.70 (1/2")
28.58 (1-1/8")
16
45.0
12.70 (1/2")
28.58 (1-1/8")
18
50.0
15.88 (5/8")
28.58 (1-1/8")
B (between outdoor unit branch kits or outdoor unit branch kit and
fi
rst separation
tube)
• Allowable pipe length (actual pipe length)
Between master out door unit and the
farthest indoor unit
70 m or less
a (+e)+f,
a (+e)+p
Between outdoor unit and indoor unit (When
outdoor unit is installed below)
* Only when the size of the liquid pipe goes
down
5 m or less
H
* (+e): applies to multiple outdoor units connections.
Table. B2
Total cooling capacity
of outdoor unit (kW)
Outside diameter (mm)
Liquid pipe
Gas pipe
22.4
12.70 (1/2")
→
9.52 (3/8")
22.22 (7/8")
→
19.05 (3/4")
22.5~28.0
12.70 (1/2")
→
9.52 (3/8")
22.22 (7/8")
28.1~45.0
12.70 (1/2")
28.58 (1-1/8")
45.1~56.0
15.88 (5/8")
28.58 (1-1/8")
56.1~62.4
15.88 (5/8")
34.92 (1-3/8")
→
28.58 (1-1/8")
62.5~80.0
15.88 (5/8")
34.92 (1-3/8")
80.1~96.0
19.05 (3/4")
34.92 (1-3/8")
96.1 or more
19.05 (3/4")
41.27 (1-5/8")
C (between separation tubes)
• Allowable pipe length (actual pipe length)
Between master out door unit and the
farthest indoor unit
120 m or less
a (+e)+f,
a (+e)+p
Between the
fi
rst separation tube and the
farthest indoor unit
60 m or less
f, p
Between outdoor unit and indoor unit (When
outdoor unit is installed below)
* Only when the size of the liquid pipe goes
down
5 m or less
H
* (+e): applies to multiple outdoor units connections.
Table. C2
Total cooling capacity
of indoor unit (kW)
Outside diameter (mm)
Liquid pipe
Gas pipe
2.2~11.1
9.52 (3/8")
15.88 (5/8")
11.2~13.9
9.52 (3/8")
19.05 (3/4")
→
15.88 (5/8")
14.0~22.3
12.7 (1/2")
→
9.52 (3/8")
22.22 (7/8")
→
19.05 (3/4")
22.4~28.0
12.7 (1/2")
22.22 (7/8")
28.1~32.4
12.7 (1/2")
28.58 (1-1/8")
→
22.22 (7/8")
32.5~44.7
12.7 (1/2")
28.58 (1-1/8")
44.8~47.0
15.88 (5/8")
→
12.7 (1/2")
28.58 (1-1/8")
47.1~56.0
15.88 (5/8")
28.58 (1-1/8")
56.1~71.6
15.88 (5/8")
34.92 (1-3/8")
→
28.58 (1-1/8")
71.7~80.0
15.88 (5/8")
34.92 (1-3/8")
80.1~95.0
19.05 (3/4")
34.92 (1-3/8")
95.1~103.0
19.05 (3/4")
41.27 (1-5/8")
→
34.92 (1-3/8")
103.1 or more
19.05 (3/4")
41.27 (1-5/8")
(If pipe diameter C2 > B2, select pipe size from table B2.)
9378945180-02_IM.indb 8
9378945180-02_IM.indb 8
2014/11/10 19:39:56
2014/11/10 19:39:56
