En-2
2.3. Accessories
Do not discard the accessories required for installation until the installation work is
complete.
Name and shape
Q’ty
Application
Installation Manual
1
This manual
Hanger
3
For suspending the RB unit from
ceiling
Washer
6
For suspending the RB unit from
ceiling
Tapping screw A
(
Φ
4×10)
6
For suspending the RB unit from
ceiling
Tapping screw B
(
Φ
4×25)
4
For suspending the RB unit from
wall
Cable tie
2
For mounting the transmission
cable
Cable clamp
1
For mounting the cable
Reducer type
UTP-
RX01AH
UTP-
RX01BH
UTP-
RX01CH
Reducer-A
a
b
a: ø9.52 [O.D.] b: ø12.7 [I.D.]
4
Reducer-B
a
b
a: ø12.7 [O.D.] b: ø15.88 [I.D.]
2
1
Reducer-C
a
b
a: ø12.7 [O.D.] b: ø9.52 [I.D.]
1
Reducer-D
a
b
a: ø19.05 [O.D.] b: ø22.22 [I.D.]
2
Reducer-E
a
b
с
a: ø19.05 [O.D.] b: ø12.7 [I.D.]
c: ø15.88 [I.D.]
2
Reducer-F
a
b
a: ø19.05 [O.D.] b: ø15.88 [I.D.]
1
2.4. Optional parts
The following optional parts are available.
Description
Model No.
Application
External connect kit
UTY-XWZXZ6
For external input
(Dry contact terminal / CNA01)
UTY-XWZXZB
For external input
(Apply voltage terminal / CNA02)
3. PRODUCT SELECTION
Select the RB unit to
fi
t the total capacity and number of the indoor units to be con-
nected downstream. (Refer to Tables 1 and 2)
I.U.=Indoor unit
RB=RB unit
O.U.=Outdoor unit
O.U.
RB
I.U.
I.U.
Calculation example: If the connected indoor units model code is 07, 09, 12 and 18.
Q1 = 2.2kW + 2.8kW + 3.6kW + 5.6kW = 14.2kW
→
Select “UTP-RX01BH”
Table 1) Conditions in which connection is possible
Model Name
Indoor unit capacity
Maximum number of con-
nectable indoor units
UTP-RX01AH
2.2
≤
Q1
≤
8.0kW
Up to 3 units
UTP-RX01BH
2.2
≤
Q1
≤
18.0kW
Up to 8 units
UTP-RX01CH
2.2
≤
Q1
≤
28.0kW
Up to 8 units
* Indoor units connected downstream of the RB unit can operate all in the same operat-
ing mode. Indoor units within the same RB group cannot simultaneously operate heat-
ing and cooling.
Table 2) Indoor unit model codes and model selection capacity
Model code
07
09
12
14
18
24
30
36
Indoor unit
capacity (Kw)
2.2
2.8
3.6
4.0
4.5
5.6
7.1
8.0
9.0
11.2
Model code
45
54
60
72
90
Indoor unit
capacity (Kw)
12.5
14.0
18.0
22.4
25.0
For connectable indoor units, refer to the catalogue or the Design & Technical manual.
4. PIPING SPECIFICATIONS
For details of piping speci
fi
cations, refer to the outdoor unit installation manual.
5. INSTALLATION WORK
5.1. Selecting an installation location
WARNING
Take into consideration whether the place you install the main unit can fully with-
stand its weight.
For hanger bolts, use embedded inserts or embedded foundation bolts in the case
of new installation, and use a hole-in-anchor if already installed, and attach in a
way so that the unit’s weight can be supported.
CAUTION
Do not install this unit in the following areas:
• Area with high salt content, such as at the seaside. It will deteriorate metal parts,
causing the parts to fail or the unit to leak water.
• Area
fi
lled with mineral oil or containing a large amount of splashed oil or steam,
such as a kitchen. It will deteriorate plastic parts, causing the parts to fail or the unit
to leak water.
• Area that generates substances that adversely affect the equipment, such as sulfu-
ric gas, chlorine gas, acid, or alkali. It will cause the copper pipes and brazed joints
to corrode, which can cause refrigerant leakage.
• Area containing equipment that generates electromagnetic interference. It will cause
the control system to malfunction, preventing the unit from operating normally.
• Area that can cause combustible gas to leak, contains suspended carbon
fi
bers or
fl
ammable dust, or volatile in
fl
ammables such as paint thinner or gasoline. If gas
leaks and settles around the unit, it can cause a
fi
re.
• Area where small animals may live. It may cause failure, smoke or
fi
re if small
animals enter and touch internal electrical parts.
• Area where animals may urinate on the unit or ammonia may be generated.
Install this unit, power supply cable and transmission cable at least 1 m away
from a television or radio receivers. The purpose of this is to prevent TV reception
interference or radio noise. (Even if they are installed more than 1 m apart, you
could still receive noise under some signal conditions.)
If children under 10 years old may approach the unit, take preventive measures so
that they cannot reach the unit.
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