Installation Manual
27
ENGLISH
Indoor Unit Drain Piping
Indoor Unit Drain Piping
1. The drain hose should point downward for
optimum drainage.
2. Incorrect Installation Examples:
Downward slope
Do not raise
Accumulated
drain water
Tip of drain hose
dipped in water
Air
Kinking
Water
leakage
Water
leakage
Ditch
Less than 50mm
(1 31/32 inch) gap
Water
leakage
[Floor Standing Type]
[Cassette Type]
• Drain piping must have down-slope (1/50 to 1/100): 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 32mm(1 1/4 inch).
• Be sure to install heat insulation on the drain piping.
Piping material: Polyvinyl chloride pipe inner
diometes Ø 25mm(1 inch) and pipe fittings
Heat insulation material: Polyethylene foam
with thickness more than 8mm(5/16 inch).
Maintenance
drain port
Upward
routing
not allowed
Pipe clamp
Indoor unit
1/50~1/100
Flexible drain hose
MAX : 700 mm(27 9/16 inch)
How to use the finishing tape for the drainpipe
Connecting pipe
Glue
Drain pipe
Refrigerant pipe
Refrigerant pipe
(Indoor unit}
Connecting wire
Pipe
Pipe
Finishing tape
Insulating material
After applying the glue, insert
the drainpipe completely.
Wind the insulating material
to connect the insulating
material of the indoor unit and
the insulating material of the
connecting pipe.
Wind the finishing tape
around the connecting pipe,
the drainpipe, and the wire.
Summary of Contents for MFL40910614
Page 34: ...34 Air Conditioner ...
