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English
Precautions on Installation
•
Check the strength and level of the installation surface so that the unit does not cause
any operating vibrations or noise after installation.
•
Fix the unit in place securely using foundation bolts, as in the figure. (Prepare 4
sets of 5/16 inch (M8) or 3/8 inch (M10) foundation bolts, nuts and washers; all sold
separately.)
•
It is best to screw in the foundation bolts until their ends are 3/4 inch (20mm) from the
foundation surface.
3/4”
(20mm)
Outdoor Unit Installation Diagram
RXM18
∗
RXM24
∗
Max. allowable piping length
98-1/2ft (30m)
** Min. allowable piping length
10ft (3m)
Max. allowable piping height
82ft (25m)
* Additional refrigerant required for refrigerant
pipe exceeding 49-1/4ft (15m) in length.
0.22oz/ft (20g/m)
Gas pipe
O.D. 1/2 inch
(12.7mm)
O.D. 5/8 inch
(15.9mm)
Liquid pipe
O.D. 1/4 inch (6.4mm)
Refrigerant piping must be kept to a minimum.
* Be sure to add the proper amount of additional refrigerant.
Failure to do so may result in reduced performance.
** The suggested shortest pipe length is 10ft (3m), in order to avoid
noise from the outdoor unit and vibration.
(Mechanical noise and vibration may occur depending on how
the unit is installed and the environment in which it is used.)
Allow 11-13/16 (300)
of work space below
the ceiling surface.
4-15/16 (125)
(From unit’
s side)
23-5/8 (600)
(Foot bolt-hole centers)
13-5/8
(346)
(Foot bolt-hole
centers)
unit : inch (mm)
If there is a danger of the unit falling or overturning,
fix the unit with foundation bolts, or with wire or
other means.
CAUTION
Keep the piping length between
10ft (3m) and 98-1/2ft (30m).
Refrigerant piping must be protected from
physical damage.
Install a plastic cover or equivalent.
If strong wind blows into the air discharge
side from the front and there is a danger
that the fan may be damaged, change the
orientation of the air discharge side of the
outdoor unit or use an air direction
adjustment grille (sold separately).
Wrap the insulation pipe with
finishing tape from bottom to top.
9-13/16 (250) from w
all
Allow space for piping and
electrical servicing.
How to remove the stop
valve cover
1) Remove the screw on the
stop valve cover.
2) Slide the stop valve cover
downward to remove it.
How to attach the stop valve
cover
1) Insert the upper part of the
stop valve cover into the
outdoor unit.
2) Tighten the screw.
Stop valve cover
In sites with poor drainage, use
block bases for the outdoor unit.
Adjust foot height until the unit is
level. Otherwise, water leakage or
pooling of water may occur.
Refrigerant charge label
Please fill in with indelible ink,
1
the factory refrigerant charge of the product,
2
the additional refrigerant amount charged in the field and
1
+
2
the total refrigerant charge
on the refrigerant charge label supplied with the product.
Affix the refrigerant charge label near the manufacturer’s label
after filling it out.
The filled out label must be adhered in the
proximity of the product charging port.
1
1
2
2
+ =
2
=
1
=
4
5
3
2
1
1 factory refrigerant charge of the
product: see unit name plate
2 additional refrigerant amount
charged in the field
3 total refrigerant charge
4 outdoor unit
5 refrigerant cylinder and manifold
for charging
English
01_EN_3P686865-1.indd 4
2022/04/20 9:18:27
