En-3
Energy-saving combination
Combination (HP)
8
10
12
14
16
18
20 22 24 26 28 30
Outdoor Unit 1 (HP)
―
―
―
―
8
10
12
―
8
10
12
14
Outdoor Unit 2 (HP)
―
―
―
―
8
8
8
―
8
8
8
8
Outdoor Unit 3 (HP)
―
―
―
―
―
―
―
―
8
8
8
8
Maximum Connectable
Indoor Unit
*
*
*
*
34 39 43
*
52 56 60 64
Combination (HP)
32 34 36 38 40 42 44 46 48 50 52 54
Outdoor Unit 1 (HP)
12
14
12
14
14
14
16
16
―
―
―
―
Outdoor Unit 2 (HP)
12
12
12
12
14
14
14
16
―
―
―
―
Outdoor Unit 3 (HP)
8
8
12
12
12
14
14
14
―
―
―
―
Maximum Connectable
Indoor Unit
64 64 64 64 64 64 64 64
*
*
*
*
* Means that the energy-saving combination is unavailable.
When connecting outdoor units, install the outdoor unit with the largest nominal system
capacity nearest to the refrigerant pipe and indoor unit, followed by those with lesser
nominal system capacities. (Outdoor unit 1
≥
Outdoor unit 2
≥
Outdoor unit 3)
2. 5. Optional parts
CAUTION
The following parts are optional parts speci
fi
c to R410A refrigerant.
Do not use parts other than those listed below.
2. 5. 1. Outdoor unit branch kit
Model
Total cooling capacity of indoor unit (kW)
UTP-CX567A
ALL
2. 5. 2. Separation tube
Model
Total cooling capacity of indoor unit (kW)
UTP-AX090A , UTR-BP090X
28.0 or less
UTP-AX180A , UTR-BP180X
28.1 to 56.0
UTP-AX567A , UTR-BP567X
56.1 or more
2. 5. 3. Header
3-6 branches
3-8 branches
Total cooling capacity of indoor unit (kW)
UTR-H0906L
UTR-H0908L
28.0 or less
UTR-H1806L
UTR-H1808L
28.1 to 56.0
2. 5. 4. External connect kit
Model
Usage
UTY-XWZXZ6
For External input
(CN131, CN132, CN133, CN134)
For External output
(Error status / CN136)
(Operation status / CN137)
UTY-XWZXZF
For External input (CN135)
UTY-XWZXZ9
For External output
(Base heater / CN115)
3. INSTALLATION WORK
Please obtain the approval of the customer when selecting the location of installation
and installing the main unit.
3. 1. Selecting an installation location
WARNING
Install the unit in a location that can withstand its weight, and where it will not topple
or fall.
Calculate the proper refrigerant concentration if you will be installing it in an en-
closed location.
Total amount of replenished refrigerant in refrigerant facility (kg)
≤
Refrigerant concentration (kg/m
3
)
Capacity of smallest room where unit is installed (m
3
)
(0.3kg/m
3
)
If the results of the calculation exceed the concentration limit, increase the room
surface area or install a ventilation duct.
CAUTION
Select an installation location by observing the following precautions:
Install the unit level. (Within 3 degrees)
Install this unit in a location with good ventilation.
If the unit must be installed in an area within easy reach of the general public, install
as necessary a protective fence or the like to prevent their access.
CAUTION
Install the unit in an area that would not inconvenience your neighbors, as they could
be affected by the air
fl
ow coming out from the outlet, noise, or vibration.
If it must be installed in proximity to your neighbors, be sure to obtain their approval.
If the unit is installed in a cold region that is affected by snow accumulation, snow fall,
or freezing, take appropriate measures to protect it from those elements.
To ensure a stable operation, install inlet and outlet ducts.
Install the unit in an area that would not cause problems even if the drain water is
discharged from the unit. Otherwise, provide drainage that would not affect people or
objects.
Install the unit in an area that has no heat sources, vapors, or the risk of the leakage
of
fl
ammable gas in the vicinity.
Install the unit in an area that is away from the exhaust or vent ports that discharge
vapor, soot, dust, or debris.
Install the indoor unit, outdoor unit, power supply cable, transmission cable and
remote control cable at least 1 meter away from a television or radio.
The purpose of this is to prevent TV reception interference or radio noise. (Even if
they are installed more than 1 meter apart, you could still receive noise under some
signal conditions.)
Keep the length of the piping of the indoor and outdoor units within the allowable
range.
For maintenance purposes, do not bury the piping.
3. 2. Drain processing
• The drain water is discharged from the bottom of the equipment. Construct a drain
ditch around the base and discharge the drain water properly.
• When installing on a roof, perform
fl
oor waterproo
fi
ng properly.
Drain processing:
• The drain water from the base of the outdoor unit may generate during operations.
Perform drain processing, as necessary.
• When you want to prevent the drain water from leaking at the perimeter, construct
a ditch for the drain water as shown in the
fi
gure.
• Provide a central drain pan, as necessary.
Outdoor unit
10mm or more
50mm or
more
3. 3. Installation dimensions
CAUTION
When installing the outdoor unit, pay attention to the following items.
Provide suf
fi
cient installation space, such as transportation route, maintenance
space, ventilation space, refrigerant piping space, and passageways.
Pay attention to the speci
fi
cations of the installation space as shown in the
fi
gure. If
the unit is not installed according to speci
fi
cations, it may cause short circuit or poor
performance. The unit may be prone to lapse into non-operation due to high pres-
sure protection.
Do not place obstructions in the air
fl
ow outlet direction. If there is an obstruction in
the outlet direction, install an outlet duct.
When there is a wall in front of the unit, provide a space of 500mm or more as
maintenance space.
When there is a wall at the left side of the unit, provide a space of 30mm or more as
maintenance space.
An outdoor temperature of 35 degrees in air-conditioned operation is assumed for
the installation space in this item. If the outdoor temperature exceeds 35 degrees
and the outdoor unit is operating at a load exceeding its rated ability, provide a
larger inlet space.
If you are installing more outdoor units than indicated here, please ensure suf
fi
cient
space or consult your distributing agent as it may affect the performance due to
short circuit and other problems.
3. 3. 1. When install near by limited height wall
(1) Single and multiple installations
• There are no restrictions on the height of the side wall.
• Provide installation spaces L1 and L2 in accordance with the table below according
to the wall height (front side, rear side) conditions.
• Provide
installation
spaces
other
than
L1
and L2 in accordance with the conditions
shown in the
fi
gure below.
• Ventilation resistance can be ignorable when the distance from a wall or product,
etc. is larger than 2m.
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