Installation Dimensions - Fujitsu LM Series Installation Manual

• 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 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
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 fi bers or
fl ammable dust, or volatile infl ammables such as paint thinner or gasoline. If gas
leaks and settles around the unit, it can cause a fi re.
- Area that has heat sources, vapors, or the risk of the leakage of fl ammable gas in
the vicinity.
- 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.
• Do not tilt the outdoor unit more than 5 degrees. However, do not install the unit with
it tilted towards the side containing the compressor.
• 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 airfl 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 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, connection cable, and
remote controller cable at least 10 ft (3 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 10 ft (3 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.
• Keep the length of the piping of the indoor and outdoor units within the allowable
range.
• For maintenance purposes, do not bury the piping.
Decide the mounting position with the customer as follows:
(1) Install the outdoor unit in a location which can withstand the weight of the unit and
vibration, and which can install horizontally.
(2) Provide the indicated space to ensure good airfl ow.
(3) If possible, do not install the unit where it will be exposed to direct sunlight.
(If necessary, install a blind that does not interfere with the airfl ow.)
(4) Do not install the unit near a source of heat, steam, or fl ammable gas.
(5) During heating operation, drain water fl ows from the outdoor unit.
Therefore, install the outdoor unit in a place where the drain water fl ow will not be
obstructed.
(6) Do not install the unit where strong wind blows or where it is very dusty.
(7) Do not install the unit where people pass.
(8) Install the outdoor unit in a place where it will be free from being dirty or getting wet by
rain as much as possible.
(9) Install the unit where connection to the indoor unit is easy.

3.2. Installation dimensions

Keep the space shown in the installation examples.
If the installation is not performed accordingly, it could cause a short circuit and result
in a lack of operating performance.
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CAUTION
CAUTION
3.2.1. Outdoor unit installation
When the upper space is open [ Unit: in (mm) ]
(1) Obstacles at rear only
4 (100) or more
(3) Obstacles at front
24 (600) or more
When an obstruction in the upper space [ Unit: in (mm) ]
(1) Obstacles at rear and above
Max. 8 (200)
24 (600) or
more
4 (100) or
more
3.2.2. Multiple outdoor unit installation
• Provide at least 10 in (250 mm) of space between the outdoor units if multiple units are
installed.
• When routing the piping from the side of an outdoor unit, provide space for the piping.
• No more than 3 units must be installed side by side.
When 3 units or more are arranged in a line, provide the space as shown in the
following example when an obstruction in the upper space.
When the upper space is open [ Unit: in (mm) ]
(1) Obstacles at rear only
10 (250) or more
8 (200) or
more
(3) Obstacles at front and rear
When an obstruction in the upper space [ Unit: in (mm) ]
Obstacles at rear and above
Max. 12 (300)
10 (250) or more
60 (1,500) or more
10 (250) or more
(2) Obstacles at rear and sides
4 (100) or
4 (100) or
more
more
10 (250) or more
(4) Obstacles at front and rear
4 (100) or more
24 (600) or more
(2) Obstacles at rear, sides, and above
Max. 8 (200)
24 (600)
or more
4 (100) or
4 (100) or
more
more
10 (250) or more
(2) Obstacles at front only
40 (1,000) or more
8 (200) or more
40 (1,000) or more
60 (1,500) or more
8 (200) or more