English
5
4) Set the suspension bolt. (Use W3/8 or M8-M10 size sus-
pension bolts.)
• Adjust the distance from the unit to the ceiling slab
beforehand.
(Refer to Fig. 8)
NOTE
NOTE
NOTE
NOTE
• All the above parts are field supplied.
5. INDOOR UNIT INSTALLATION
Installing optional accessories before installing the indoor
unit is easier.
As for the parts to be used for installation work, be sure to use
the provided accessories and specified parts designated by our
company.
(1) Secure the hooks to the eyebolts.
(Refer to Fig. 9)
NOTE
NOTE
NOTE
NOTE
• To ensure they are safely secured, use the included wash-
ers, and secure them with a double nut to make sure.
(2) Lift the indoor unit’s main body, insert the bolt (M8) for
the hook into the attachment part on the hook, while
sliding the main body from the front.
(Refer to Fig. 10)
(3) Fasten the bolts for the hooks (M8) securely in the four
locations, left and right.
(Refer to Fig. 10)
(4) Replace the screws for the hooks which had been
removed (M5) securely in 2 places left and right. This is
necessary to prevent any forward and back deviance in
the main body of the indoor unit.
(Refer to Fig. 10)
(5) When hanging the indoor unit main body, be sure to
use a level or a plastic tube with water in it to make sure
the drain piping is set either level or slightly tilted, in
order to ensure proper drainage.
(Refer to Fig. 11)
A.When the drain piping is tilted to the right, or to the right
and back.
Place it level, or tilt it slightly to the right or the back.
(Within 1°.)
B.When the drain piping is tilted to the left, or to the left and
back.
Place it level, or tilt it slightly to the left or the back.
(Within 1°.)
CAUTION
Setting the unit at an angle opposite to the drain piping
might cause leaks.
6. REFRIGERANT PIPING WORK
• For the outdoor unit refrigerant piping, refer to the installation
manual attached to the outdoor unit.
• Carry out insulation of both gas and liquid refrigerant piping
securely. If not insulated, it may cause water leakage. For
gas piping, use insulation material of which heat resistant
temperature is not less than 120°C.
For use under high humidity, strengthen the insulation mate-
rial for refrigerant piping. If not strengthened, the surface of
insulation material may sweat.
• Before installation work, make sure that the refrigerant is
R410A. (Unless the refrigerant is R410A, the normal opera-
tion cannot be expected.)
CAUTION
This air conditioner is a dedicated model for new refriger-
ant R410A. Make sure to meet the requirements shown
below and carry out installation work.
•
Use dedicated piping cutters and flaring tools for R410A.
•
When making a flare connection, coat the flared inner
surface only with ether oil or ester oil.
•
Use only the flare nuts attached to the air conditioner. If
other flare nuts are used, it may cause refrigerant leak-
age.
•
To prevent contamination or moisture from getting into
the piping, take measures such as pinching or taping the
pipings.
Do not mix substance other than the specified refrigerant
such as air into the refrigeration circuit.
If the refrigerant leaks during the work, ventilate the room.
Fig. 8
!
" !
" #
$ #
Nut (Field supplied)
Washer (3) (accessory)
Double nut
Hanger bracket
Fig. 9
Fig. 10
≤
1°
≤
1°
≤
1°
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