LG LT-B2461CL - Page 32

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Install certainly the decorative panel.
Cool air leakage causes sweating. 󱉒 Water drops fall.
• Drain piping must have down-slope (1/50 to 1/100): be
sure not to provide up-and-down slope to prevent rever-
sal 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.
• Be sure to execute heat insulation on the drain piping.
Air conditioner
unit
Ceiling
board
Decorative panel
Decorative
panel
Fit the insulator (this part) and
be careful for cool air leakage
Good example
Air
Cool air leakage
(no good)
Bad example
Ceiling
board
Air conditioner unit
Feed water
Drain Pump
Drain pan
Flexible drain hose
(accessory)
Main
drain pipe
Glue the joint
Drain
port
Drain hose connection
Use the clip (accessory)
Maintenance
drain port
Upward
routing
not allowed
Pipe clamp
Indoor unit
CAUTION
Piping material: Polyvinyl chloride pipe VP-25
and pipe fittings
The air conditioner uses a drain pump to drain water.
Use the following procedure to test the drain pump operation:
• Connect the main drain pipe to the exteri-
or and leave it provisionally until the test
comes to an end.
• Feed water to the flexible drain hose and
check the piping for leakage.
• Be sure to check the drain pump for nor-
mal operating and noise when electrical
wiring is complete.
• When the test is complete, connect the
flexible drain hose to the drain port on
the indoor unit.
Heat insulation material: Polyethylene foam with thickness more than 8 mm.
8. INDOOR UNIT DRAIN PIPING
Drain test