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4
Indoor/Outdoor Unit
Installation Drawings
For installation of the indoor units, refer to the installation manual which was provided with the units.
(The diagram shows a wall-mounted indoor unit.)
CAUTION
• Do not connect the embedded branch piping and the outdoor unit when only carrying out piping work without connecting the
indoor unit in order to add another indoor unit later.
Make sure no dirt or moisture gets into either side of the embedded branch piping.
See “7 Refrigerant piping work” on page 9 for details.
• It is impossible to connect the indoor unit for one room only.
Be sure to connect at least 2 rooms
.
Caulk
pipe hole
gap
with putty.
Cut thermal insulation
pipe to an appropriate
length and wrap it with
tape, making sure that no
gap is left in the insulation
pipe’s cut line.
Wrap the insulation
pipe with the finishing
tape from bottom to top.
250mm from wall
Allow space for piping
and electrical servicing.
If there is the danger of the unit falling
or overturning, fix the unit with
foundation bolts, or with wire or other
means.
If the location does not have good
drainage, place the unit on a level
mounting base (or a plastic pedestal).
Install the outdoor unit in a level
position. Failure to do so may result in
water leakage or accumulation.
Level mounting
base (optional parts)
(Foot bolt-
hole centres)
600
Clamping material
Insulation tube
Service lid
Tape
Also insulate the connection on the outdoor unit.
Use tape or insulating material on all connections
to prevent air from getting in between the copper
piping and the insulation tube.
Be sure to do this if the outdoor unit is installed
above.
(Foot bolt-hole
centres)
353
Stop valve cover
Allow 300mm of
work space below
the ceiling surface.
unit: mm
Max. allowable refrigerant charge amount
3MXM40M
2.2kg
3(A)MXM52M
2.2kg
3MXM68M
2.4kg
4MXM68M
2.6kg
4MXM80M
3.0kg
5MXM90M
3.3kg
Refrigerant piping must be kept to
a minimum.
3MXM40M
4.7m
2
3(A)MXM52M
4.7m
2
3MXM68M
5.5m
2
4MXM68M
6.5m
2
4MXM80M
8.6m
2
5MXM90M
10.4m
2
Minimum floor area for installation
The flare connection
should be installed
outdoors.
Refrigerant piping must
be protected from
physical damage.
Install a plastic cover or
equivalent.
