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Attaching the hanging bracket
first
1
Remove the screws fastening hanging
bracket onto the indoor unit.
2
Loosen the bolts fastening hanging bracket
onto the indoor unit and remove the hanging
bracket.
3
Adjust the length of the two bolts for
fastening the hanging bracket, as shown
below.
4
Fasten the hanging bracket with the hanging
bolts and ensure that the bracket is level
from front to back and from side to side.
(Unit : mm)
5
Attach the indoor unit onto the hanging
bracket and fasten it tight with the bolts and
screws.
CAUTION
• The ceiling is not always level. Use the level
gauge to measure the level of the ceiling in the
width and depth directions. Adjust the bolts for
the hanging brackets so that the level error will
be within 5 mm.
• Do not lower the air discharge side and the side
opposite to the selected drain pipe withdraw.
Model RAV-
N
SM56
867 to 874
SM80
1184 to 1191
SM110 ~ SM160
1501 to 1508
Screw
Hanging bracket
Bolts for fastening
the hanging bracket (Loosen these bolts.)
Indoor Unit
Adjust the length of the bolts for
fastening the hanging bracket.
7 to 12 mm
Hanging bolt
(locally procured)
Hanging bracket fixing board
Washer
(Accessory)
Double nut
(locally procured)
Ceiling surface
Front
N
(inside dimension)
Bolts for fastening the hanging bracket
(Fasten the bolts tight.)
Use bolts to fasten
the hanging bracket.
5
Drain piping
CAUTION
Following the Installation Manual, perform the drain piping work so that water is properly drained. Apply a heat
insulation so as not to cause a dew condensation.
Inappropriate piping work may result in water leakage in the room and wet furniture.
• Provide the indoor drain piping with proper heat insulation.
• Provide the area where the pipe connects to the indoor unit with proper heat insulation. Improper heat insulation
will cause condensation to form.
• The drain pipe must be sloping downward (at an angle of 1/100 or more), and do not run the pipe up and down
(arched shape) or allow it to form traps. Doing so may cause abnormal sounds.
• Restrict the length of the traversing drain pipe to 20 meters or less. For a long pipe, provide support brackets at
intervals of 1.5 to 2 meters to prevent flapping.
• Install the collective piping as shown in the following figure.
• Do not provide any air vents. Otherwise, the drain water will spout, causing water to leak.
• Do not allow any force to be applied to the connection area with the drain pipe.
• A hard PVC pipe cannot be connected to the drain pipe connecting port of the indoor unit. Be absolutely sure to
use the flexible hose provided for the connections with the drain pipe connecting port.
• Adhesive agents cannot be used for the drain pipe connecting port (herd socket) of the indoor unit. Be absolutely
sure to secure the pipe using the hose bands provided. Use of an adhesive agent may damage the drain pipe
connecting port or cause water to leak.
Pipe material, size and insulator
The following materials for piping work and insulating process are procured locally.
Pipe material
Hard vinyl chloride pipe VP20 (Nominal outer diameter Ø26 mm)
Insulator
Foamed polyethylene foam, thickness: 10 mm or more
1.5 m to 2 m
Support
bracket
Downward slope
1/100 or more
Arched shape
Trap
Downward slope
1/100 or more
(Collective
piping)
As long as possible
(Approx. 10 cm)
Heat
insulator
Incorrect
VP30
Drain pipe
connecting port
(hard socket)
Attached
hose band
Attached drain hose
Attached hose band
Adhesive
agent
prohibited
VP 20 Polyvinyl
chloride pipe
(locally procured)
Dr
ai
n p
an
Soft
socket
Soft
socket
65-EN
66-EN
++001114652201_01EN.book Page 33 Monday, May 27, 2013 3:45 PM
