En-7
• Allowable height difference
Between outdoor unit and indoor unit (When
indoor unit is installed below)
50 m or less
H1
Between outdoor unit and indoor unit (When
outdoor unit is installed below)
40 m or less
Between indoor units
15 m or less
H2, H3
Between outdoor units
0.5 m or less
H4
• Total refrigerant amount : 63 kg or less
• Outdoor unit capacity : Master
≥
Slave
C) In the case of 3 outdoor units connected
Fig. C
O.U.-3
(Slave2)
O.U.-2
(Slave1)
O.U.-1
(Master)
f
e
c
b
a
g
q
H4
d
p
H1
H2
H3
O.U. :Outdoor unit
I.U. :Indoor unit
• Allowable pipe length (actual pipe length)
Between master outdoor unit and the
farthest indoor unit
165 m or less
a+e+f
a+e+p
Between the
fi
rst separation tube and the
farthest indoor unit
90 m or less
f, p
(farthest indoor unit)-(closest indoor unit)
60 m or less
f (p) - g (q)
Total pipe length
1000 m or less
Total
Between outdoor unit and outdoor unit
branch kit
3 m or less
a, b, c
Between the farthest outdoor unit and the
fi
rst outdoor unit branch kit
12 m or less
b+d
c+d
• Allowable height difference
Between outdoor unit and indoor unit (When
indoor unit is installed below)
50 m or less
H1
Between outdoor unit and indoor unit (When
outdoor unit is installed below)
40 m or less
Between indoor units
15 m or less
H2, H3
Between outdoor units
0.5 m or less
H4
• Total refrigerant amount : 94.5 kg or less
• Outdoor unit capacity : Master
≥
Slave 1
≥
Slave 2
NOTE) •
If the outdoor temperature during cooling operation is expected to be –5 °C
or less, outdoor unit must be installed lower than 5 m or less from the indoor
unit.
• Please refer to “8.3.2. Checking total amount of refrigerant and calculating
the amount of refrigerant charge to be added” for the total amount of refrig-
erant.
4. 2. Pipe selection
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.
Master
unit
Slave
unit1
First separation
tube (optional)
Outdoor unit
branch kit
(optional)
Separation tube
(optional)
Pipe size
(table A1)
Pipe size
(table B1)
Pipe size
(table C1)
Pipe size
(table D1)
Slave
unit2
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
(Wall thickness and pipe material for each diameter)
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 equiva-
lent
COPPER*2
JIS H3300 C1220T-H or
equivalent
*1. Allowable
tensile
stress
≥
33 (N/mm
2
)
*2. Allowable
tensile
stress
≥
61 (N/mm
2
)
*3. Endurance pressure of the pipes 4.2MPa
Please select the pipe size in accordance with local rules.
Table. A1
(Between outdoor unit and outdoor unit branch kit)
HP
Outdoor unit cooling
capacity (kW)
Outside diameter (mm)
Branch kit*4
Liquid pipe
Gas pipe
8
22.4
12.70 (1/2")
22.22 (7/8")
UTP-CX567A
10
28.0
12.70 (1/2")
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")
*4. For the installation method, refer to “5.4. Multiple connections”.
Table. B1
(Between outdoor unit branch kits or outdoor unit branch kit and
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 (1/2")
22.22 (7/8")
28.1 to 45.0
12.70 (1/2")
28.58 (1-1/8")
45.1 to 56.0
15.88 (5/8")
28.58 (1-1/8")
56.1 to 80.0
15.88 (5/8")
34.92 (1-3/8")
80.1 to 96.0
19.05 (3/4")
34.92 (1-3/8")
96.1 or more
19.05 (3/4")
41.27 (1-5/8")
Table. C1
(Between separation tubes)
Total cooling capacity
of indoor unit (kW)
Outside diameter (mm)
Liquid pipe
Gas pipe
2.2 to 11.1
9.52 (3/8")
15.88 (5/8")
11.2 to 13.9
9.52 (3/8")
19.05 (3/4")
14.0 to 28.0
12.70 (1/2")
22.22 (7/8")
28.1 to 44.7
12.70 (1/2")
28.58 (1-1/8")
44.8 to 56.0
15.88 (5/8")
28.58 (1-1/8")
56.1 to 80.0
15.88 (5/8")
34.92 (1-3/8")
80.1 to 95.0
19.05 (3/4")
34.92 (1-3/8")
95.1 or more
19.05 (3/4")
41.27 (1-5/8")
* If the selected pipe diameter between separation tubes (based on table "C1")
becomes larger than the pipe diameter between outdoor unit branch kit and the
fi
rst
separation tube (based on table "B1"), please select the pipe whose diameter is equal
to the one between outdoor unit branch kit and the
fi
rst separation tube.
(If pipe diameter C1 > B1, select pipe size from table B1)
* Total cooling capacity of indoor unit" is the total value for the cooling capacity of indoor
unit connected downstream.
Table. D1
(Between separation tube to indoor unit)
Model code
Cooling capacity of
indoor unit (kW)
Outside diameter mm (in)
Liquid pipe
Gas pipe
04, 07, 09, 12, 14
1.1, 2.2, 2.8, 3.6, 4.5
6.35 (1/4")
12.70 (1/2")
18, 24, 30, 34
5.6, 7.1, 9.0, 10.0
9.52 (3/8")
15.88 (5/8")
36, 45, 54, 60
11.2, 12.5, 14.0, 18.0
9.52 (3/8")
19.05 (3/4")
72, 90, 96
22.4, 25.0, 28.0
12.70 (1/2")
22.22 (7/8")
Use a standard separation tube for pipe branching. Do not use a T tube as it does not
separate the refrigerant evenly.
Table. E
(Separation tube / Header)
• Separation
tube
Total cooling capacity of indoor unit (kW)
Separation tube *5
28.0 or less
UTP-AX090A or UTR-BP090X
28.1 to 56.0
UTP-AX180A or UTR-BP180X
56.1 or more
UTP-AX567A or UTR-BP567X
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2014/11/10 19:39:56
2014/11/10 19:39:56
