Mitsubishi Electric American Standard NAXMMX20A122A Serie Notice D'installation page 3

Note:
When connecting the Floor standing type indoor unit(s) to this outdoor unit, charge additional refrigerant according to the instructions in the table below.
No. of Floor standing type indoor units
NAXFKS09A112A NAXFKS12A112A
NAXFKS15A112A NAXFKS18A112A
1 unit
2 units
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
NAXMMX20A122A Liquid / Gas
A, B UNIT 1/4 (6.35) / 3/8 (9.52)
1-4. SELECTING THE INSTALLATION LOCATION
• Where it is not exposed to strong wind. If the outdoor unit is exposed to a
wind during defrosting, the defrosting time will be longer.
• 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 (or cool) 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 10 ft. (3 m) away from the antenna of TV set or radio. Op-
eration 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 vibration
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.
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 behind
each other.
7-7/8 (200) or more
3-15/16 (100)
or more
19-11/16 (500)
or more
Height of the obstacle is 47-1/4 (1200) or less
131.2 ft. (40 m) or less
3.52 oz additional (Total 6 lbs 2.77 oz)
100 g additional (Total 2800 g)
7.05 oz additional (Total 6 lbs 6.29 oz)
200 g additional (Total 2900 g)
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.
3-15/16 (100)
or more
19-11/16 (500)
or more
19-11/16 (500) or more
13-25/32 (350)
or more
19-11/16 (500)
or more
Pipe length ( L )
3.52 oz + {(L-131.2) ft. × 1.08 oz/5 ft.)}
100 g + {(L-40) m × 20 g/m)}
7.05 oz + {(L-131.2) ft. × 1.08 oz/5 ft.)}
200 g + {(L-40) m × 20 g/m)}
3/8 (9.52) → 1/2 (12.7) : MAC-A454JP-E
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
liable 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 hot spring, sewage, waste water.
• 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 obstacle above the unit)
3-15/16 (100) or more
4.
Obstacles in front and behind
The unit can be used by attaching an optional outdoor blowing guide
(PAC-ADG856AA-E) (but both sides and top are open).
Blowing guide (PAC-ADG856AA-E)
6.
Service space
Provide space for service and maintenance as shown in the figure.
Service space
3-15/16 (100) or more
13-25/32 (350) or more
More than 131.2 ft. (40 m)
(Unit: inch (mm))
7-7/8 (200) or more
13-25/32 (350)
or more
3-15/16 (100) or more
19-11/16 (500) or more
3-15/16 (100) or more
19-11/16 (500)
or more
13-25/32 (350) or more
(Unit: inch (mm))
En-2