The indoor unit installation
Installation Manual
11
ENGLISH
• Connect the main drain pipe to the exterior and leave
it provisionally until the test comes to an end.
• Feed water to the flexible drain hose and check the
piping for leakage.
• When the test is complete, connect the flexible drain
hose to the drain port on the indoor unit.
Feed water
Flexible drain hose
(accessory)
Main
drain pipe
Glue the joint
Flexible drain hose
Drain test
• Drain piping must have down-slope (15 mm
~ 25 mm): be sure not to provide up-and-
down slope to prevent reversal flow.
• During drain piping connection, be careful
not to exert extra force on the drain port on
the indoor unit.
• The outside diameter of the drain
connection on the indoor unit is 65 mm.
• Be sure to execute heat insulation on the
drain piping.
• Install the drain raising pipes at a right
angle to the indoor unit and no more than
300 mm from the unit.
Maintenance
drain port
Upward
routing
not allowed
Pipe clamp
Indoor unit
Piping material: Polyvinyl chloride pipe VP-25
and pipe fittings
Heat insulation material: Polyethylene foam with thickness more than 10 mm.
Indoor Unit Drain Piping
