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Drain pipe
Hanging the indoor unit
Hang the indoor unit according to installation manual provided with the indoor unit.
Follow the installation manual provided with the indoor unit and the elbow piping kit regarding application of insulation and
connection of refrigerant pipes.
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 vinyl chloride pipe cannot be connected to the
drain pipe connecting port of the drain pump kit. Be
absolutely sure to use the drain 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 drain pump kit. 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.
Drain pipe connection
• After the provided drain hose is installed, connect the hard vinyl chloride pipe (locally procured).
1.5 m~2 m
Support
brackets
Heat
insulator
Downward slope
1/100 or more
Arched shape
Trap
Collective
piping
As long as possible (Approx. 10 cm)
Downward slope
1/100 or more
VP30
Incorrect
Incorrect
Incorrect
Pipe material
Hard polyvinyl chloride pipe socket VP25
Hard vinyl chloride pipe VP25 (Nominal outer diameter Ø32 mm)
Insulator
Foamed polyethylene foam, thickness: 10 mm or more
+00EH99545701_00Ta.book Page 7 Wednesday, June 5, 2013 2:38 PM
