17
3-5. Installing the Drain Pipe
3-5-1. Before Performing the Installation Drain Piping
(1) Limitations of Raising the Drain Pipe Connection
CAUTION
●
The drain pipe can be raised to a maximum
height of 850 mm from the bottom of the ceiling.
Do not attempt to raise it higher than 850 mm.
Doing so will result in water leakage.
(2) Limitations of Drain Pipe Connection
CAUTION
●
Do not install the drain pipe with an upward
gradient from the drain port connection. This will
cause the drain water to flow backward and leak
when the unit is not operating.
●
Do not install an air bleeder as this may cause
water to spray from the drain pipe outlet.
●
Do not provide U-trap or bell-shaped trap in the
middle of the drain pipe. Doing so will cause
abnormal sound.
●
Make sure the drain pipe has a downward
gradient (1/100 or more; downward from drain
port connection).
(3) Limitations of Drain Hose Connection
CAUTION
●
Do not bend the supplied drain hose 90° or
more.
Bend it less than 45°.
●
Do not make a trap in the middle of the
supplied drain hose. Doing so will cause
abnormal sound.
* Length of supplied drain pipe = 250 mm
A
B
300 mm or less
Indoor unit
Bottom of the Ceiling board
A : 850 mm or lower
B : 666 mm or lower
(as short as possible)
Indoor unit
Air bleeder prohibited
Trap prohibited
Upward gradient
prohibited
Indoor
unit
Separation of support bracket = 1.5 m ~ 2 m
Downward gradient = 1/100 or more
Bend angle 90° prohibited
Bend angle less than 45°
Trap prohibited
01_330918_EU_Eng.indb 17 2021/9/9 11:26:44
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