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<PRECAUTIONS FOR DRAIN RAISING PIPING>
• Install the drain raising pipes at a height of less than 675 mm.
The drain pump of this unit has a high delivery flow rate. Therefore, the higher the drain raising height is,
the lower the sound of draining will be. For this reason, a minimum drain raising height of 300 mm is rec-
ommended.
• Install the drain raising pipes at a right angle to the indoor unit and no more than 300 mm from the unit.
Drain hose (1)
(attached)
Level or
tilted
slightly up
To prevent air bubbles in the
drain hose part, keep it level or
slightly tilted up. Any bubbles in
the hose might cause the unit
to make noise due to backflow
when the drain pump stops.
NOTE
• To ensure no excessive pressure is applied to the included drain hose (1), do not bend or twist when install-
ing. (This may cause leakage.)
• If converging multiple drain pipes, install according to the procedure shown below.
Select converging drain pipes whose gauge is suitable for the operating capacity of the unit.
(2) After piping work is finished, check if drainage flows smoothly.
WHEN ELECTRIC WIRING WORK IS FINISHED
• Add approximately 1 L of water slowly from the air outlet and check drainage flow.
Check drainage flow during COOL running, explained under ''12. TEST OPERATION''.
• After checking the drainage of water, refer to Fig. 24 and attach the sealing pad (14) to perform the thermal
insulation of the drain socket.
English
Metal clamp
(attached) (2)
Fig. 23
Sealing pad - Large
(10) (accessory)
Be sure to lay
the sealing pad
(10) on (14).
Sealing pad (14)
(accessory)
Ceiling slab
≤300 mm
1 – 1.5 m
Drain raising pipe
Raising section
Drain hose (attached) (1)
Fig. 22
Converging drain pipes
Keep the drain pipe sloping downward
at a gradient of at least 1/100 to prevent
air pockets from forming.
(
Water pooling in the drainage pipe can
cause the drain to clog.
Sealing pad (14)
(accessory)
Do not have the clearance.
Fig. 24
Hanger bracket
Adjustable
(≤675)
)
15
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