Selecting The Installation Location - Mitsubishi Electric MXZ-3B24NA Notice D'installation

1-3. SELECTING OPTIONAL DIFFERENT-DIAMETER JOINTS
If the diameter of connection pipe does not match the port size of outdoor unit, use optional different-diameter joints according to the following table.
Port size of outdoor unit
MXZ-3B MXZ-4B Liquid / Gas
A UNIT 6.35 (1/4) / 12.7 (1/2)
B - C UNIT B - D UNIT 6.35 (1/4) / 9.52 (3/8)

1-4. SELECTING THE INSTALLATION LOCATION

• Where it is not exposed to strong wind.
• Where airflow is good and dustless.
• Where rain or direct sunshine can be avoided as much as possible.
• Where neighbours are not annoyed by operation sound or hot air.
• Where rigid wall or support is available to prevent the increase of operation
sound or vibration.
• Where there is no risk of combustible gas leakage.
• When installing the unit, be sure to secure the unit legs.
• Where it is at least 3 m (10 ft.) away from the antenna of TV set or radio.
Operation of the air conditioner may interfere with radio or TV reception in
areas where reception is weak. An amplifier may be required for the affected
device.
• Install the unit horizontally.
• Please install it in an area not affected by snowfall or blowing snow. In
areas with heavy snow, please install a canopy, a pedestal and/or some
baffle boards.
Note:
It is advisable to make a piping loop near outdoor unit so as to reduce vibra-
tion transmitted from there.
FREE SPACE REQUIRED AROUND OUTDOOR UNIT
1.
Obstacles above
When there is no obstacle in front and on the sides of the unit, it is allowed
to install the unit where an obstacle is above the unit only if the space
shown in the figure is provided.
500 (19-11/16) or more
3.
Obstacles in front (blowing) only
When there is an obstacle in front of the unit as shown in the figure, open
space above, behind, and on the sides of the unit is required.
5.
Obstacles in front, behind and on side(s)
• When installing the unit in an area that is enclosed with walls such as a
verandah, be sure to have enough space as shown below.
In this case, the air conditioning capacity and power consumption might
deteriorate.
• When installing two or more units, do not install the units in front or be-
hind each other.
200 (7-7/8) or more
100 (3-15/16)
or more
500 (19-11/16)
or more
Height of the obstacle is 1200 (47-1/4) or less
Optional different-diameter joints (port size of outdoor unit → diameter of connection pipe)
Refer to the installation manual of indoor unit for the diameter of connection pipe of indoor unit.
100 (3-15/16) or more
500 (19-11/16) or more
350 (13-25/32)
or more
500 (19-11/16)
or more
6.35 (1/4) → 9.52 (3/8) : PAC-493PI
9.52 (3/8) → 12.7 (1/2) : MAC-454JP
9.52 (3/8) → 15.88 (5/8) : PAC-SG76RJ
12.7 (1/2) → 9.52 (3/8) : MAC-A455JP
12.7 (1/2) → 15.88 (5/8) : MAC-A456JP
Note:
When operating the air conditioner in low outside temperature, be sure to
follow the instructions described below.
• Never install the outdoor unit in a place where its air inlet/outlet side may
be exposed directly to wind.
• To prevent exposure to wind, install the outdoor unit with its air inlet side
facing the wall.
• To prevent exposure to wind, it is recommended to install a baffle board on
the air outlet side of the outdoor unit.
Avoid the following places for installation where air conditioner trouble is li-
able to occur.
• Where flammable gas could leak.
• Where there is much machine oil.
• Salty places such as the seaside.
• Where sulfide gas is generated such as a hot spring.
• Where there is high-frequency or wireless equipment.
• Where there is emission of high levels of VOCs, including phthalate com-
pounds, formaldehyde, etc., which may cause chemical cracking.
2.
Front (blowing) side open
As long as space indicated in the figure is provided, it is allowed to install
the unit where obstacles are behind and on the sides of the unit. (No ob-
stacle above the unit)
100 (3-15/16) or more
4.
Obstacles in front and behind
The unit can be used by attaching an optional outdoor blowing guide
(MAC-856SG) (but both sides and top are open).
Blowing guide (MAC-856SG)
6.
Service space
Provide space for service and maintenance as shown in the figure.
Service space
100 (3-15/16) or more
350 (13-25/32) or more
(Unit: mm (inch))
200 (7-7/8) or more
350 (13-25/32) or more
100 (3-15/16) or more
500 (19-11/16) or more
100 (3-15/16) or more
500 (19-11/16)
or more
350 (13-25/32) or more
(Unit: mm (inch))
En-2