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Do not install the outdoor 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 filled 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 sulfuric
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 fibers or
flammable dust, or volatile inflammables such as paint thinner or gasoline. If gas
leaks and settles around the unit, it can cause a fire.
• Area where small animals may live. It may cause failure, smoke or fire if small
animals enter and touch internal electrical parts.
• Area where animals may urinate on the unit or ammonia may be generated.
Do not tilt the outdoor unit more than 3 degrees.
Install the outdoor unit in a well-ventilated location away from rain or direct sunlight.
If the outdoor 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.
Install the outdoor unit in a location that would not inconvenience your neighbors, as
they could be affected by the airflow 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 outdoor 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 outdoor unit in a location that is away from exhaust or the 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 3.3ft (1m) 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 3.3ft (1m) apart, you could still receive noise under some signal conditions.)
3.3ft (1m)
or more
Branch switch and
circuit breaker
If children under 10 years old may approach the unit, take preventive measures so that
they cannot reach the unit.
Keep the length of the piping of the indoor and outdoor units within the allowable range.
For maintenance purposes, do not bury the piping.
4.2. Drain installation
In places where the outdoor temperature drops to 32 °F (0 °C) or lower, the drain water
may freeze and may stop up the drain or cause other outdoor unit trouble. Therefore
take measures so that the drain water will not freeze and clog the drain.
Please set up the outdoor unit in a high place and please do not arrange the frame of
installed stand under the drain port, because the water dropped from the drain port
repeats freezing and accumulating, and may block the drain port.
In the area with heavy snowfall, if the intake and outlet of outdoor unit is blocked with
snow, it might become difficult to get warm and it is likely to because of the breakdown.
Please construct a canopy or baffle board. (local configured).
CAUTION
Branch switch and
circuit breaker
3.3ft (1m)
or more
CAUTION
4.3. Installation dimensions
The installation space shown in the following examples is based on an ambient
temperature under cooling operation of 95°F (35°C) (DB) at the air intake of the
outdoor unit. Provide more space around the air intake than shown in the examples if
the ambient temperature exceeds 95°F (35°C) (DB) or if the thermal load of all of the
outdoor units exceeds the capacity.
Consider the transportation route, installation space, maintenance space, and access,
and install the unit in a location with sufficient space for the refrigerant piping.
Observe the installation space specifications that are shown in the figures.
Keep the same space at rear air intake.
Provide the same space for the air intake at the rear of the outdoor unit.
If the installation is not performed according to the specifications, it could cause a short
circuit and result in a lack of operating performance. As a result, the outdoor unit might
easily be stopped by high-pressure protection.
Air intake
Installation methods not shown in the following examples are not recommended.
Performance may drop significantly.
4.3.1. Single outdoor unit installation
When the upward area is open (Unit : in. (mm))
(1) Obstacles at rear only
5-29/32 (150)
or more
(3) Obstacles at front only
39-3/8 (1000)
or more
When an obstruction is present also in the upward area (Unit : in. (mm))
(1) Obstacles at rear and above only
Max.
19-11/16
(500)
39-3/8
(1000)
or more
11-13/16
(300)
or more
CAUTION
Rear view
(2) Obstacles at rear and sides only
7-7/8
11-13/16
(200)
(300)
7-7/8
or more
or more
(200)
or more
(4) Obstacles at front and rear only
5-29/32 (150)
or more
39-3/8 (1000)
or more
(2) Obstacles at rear, sides, and above only
Max.
19-11/16
(500)
19-11/16
9-27/32
(500)
(250)
or more
or more 9-27/32 (250)
or more
59-1/16
(1500)
or more
En-5
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