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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.
Outdoor Unit Installation Diagram
Max. allowable piping length
Min. allowable piping length
**
Max. allowable piping height
Additional refrigerant required for refrigerant
*
pipe exceeding 32-3/4ft (10m) in length.
Gas pipe
Liquid pipe
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.)
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).
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.
■
English
65-5/8ft (20m)
10ft (3m)
49-1/4ft (15m)
0.21oz/ft (20g/m)
O.D. 3/8 inch (9.5mm)
O.D. 1/4 inch (6.4mm)
Allow 11-13/16 (300)
of work space below the
ceiling surface.
unit: inch (mm)
Refrigerant piping must be protected
from physical damage.
Install a plastic cover or equivalent.
Wrap the insulation pipe with
finishing tape from bottom to top.
Allow space for piping
and electrical servicing.
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 65-5/8ft (20m)
Stop valve cover
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.
4
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