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or other field-supply parts for the newly-mounted
ceiling. Before continuing installation, adjust the
clearance between the lifting screw and the ceiling to
50-80mm.
[Installation example]
222222221
Figure 5
Note) All the above parts are supplied at the installation site.
5. Indoor unit installation
Be sure to use only the specified parts for installation
work.
installation procedure for locations with newly
mounted ceiling:
(1) --+ (2) --+ (3) --+ (4) --+ (5)
Installation procedure for locations with existing ceiling:
(1) --+ (3) --+ (4) --+ (5)
(1 )Temporarily install the indoor units
• Attach the hanger bracket to the lifting screw. Be sure to
secure the hanger bracket firmly at the upper and lower
ends using the nuts and hanger washers®· The washer
fixing plate (!) can prevent the hanger washer ® from
slipping off.
Hanger washers@
(accessories)
Washer Clamp (7)
(accessory)
Hanger bracket
[Secure the hanger bracket]
Figure 6
(2)For dimensions of the ceiling opening, refer to the
paper board for ceiling opening. Consult your builder or
carpenter for details.
• Center of the ceiling opening is marked on the paper
board for ceiling opening. Center of the units is in line
with that of the ceiling opening.
• Fix the paper board for ceiling opening to the units
using 4 screws ®· In this case, make the hole on the
unit's hanger bracket corresponded to the mounting
hole on the paper board for ceiling opening.
• Relative positions of the main unit and ceiling are marked
on the paper board for ceiling opening. Adjust the height
of the unit body accordingly.
□ □
Screws@
(accessories)
[Secure the mounting paper pattern]
Figure 8
(3)Adjust the levelness of the air conditioner.
• The indoor unit is equipped with a built-in drain pump
and float switch. Adjust the levelness using a level meter
or polyethylene pipe filled with water.
6
Roof
Long nut or thread
line equipment
Ceiling
Insert
Upper side nut
[Washer clamp(7} fixing method]
Figure 7
\
Paper board for ceiling opening
(within the bottom box)
Levelness of unit should not exceed 0.5 deg down at opposite
side of drain pump.
Level
meter
-�Caution---------------
If the unit tilts to the opposite flow direction of the condensed
water, the float switch will not operate normally, which will
cause water leakage.
(4)Pull out the inserted washer fixing plate(!) which is used
to prevent the washer from slipping off and tighten the
upper nut.
(5)Remove the paper board for ceiling opening.
6. Decorative panel installation
<Refer to panel operation & installation manual for
detailed decorative panel installation.>
7. Refrigerant piping installation
<For installing the refrigerant piping of the outdoor unit,
refer to the installation manual included with the outdoor
unit.>
<Insulate both gas side piping and liquid side piping
effectively. Otherwise, it may cause water leakage. Use
the insulation material which can withstand high
temperature of 120 °C or more. Besides, reinforce the
insulation of the refrigerant piping in accordance with
the installation environment. If not reinforced,
condensation could form on the surface of the
insulation material.>
<Be sure to check the refrigerant is R41 0A before
performing refrigerant piping installation. Adopting
other refrigerants may result in the abnormal operation
of the unit.>
-�Caution---------------
This product is a dedicated model for the new refrigerant R41 0A.
Always follow instructions below to perform installation work.
• Be sure to use the special pipe cutters and flaring tools for
R410A.
• When connecting the flaring, only coat the refrigerant oil
(ester or ether oil) to the inner side of the flaring.
• Always use the flaring nut included with the unit. (Do not
use other flaring nuts such as 1-type flaring nut. Using
other flaring nuts may lead to refrigerant leakage.)
• To prevent entry of any dirt, dust or moisture into the piping,
adjust the piping through pinching or sealing methods.
Vinyl Tube
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