Indoor Unit Drain Piping - LG MFL40910614 Installation Manual

Indoor Unit Drain Piping

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