Drain Piping - LG MULTI V ARNU093TJC2 Installation Manual

Installation

Drain Piping

• 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 25mm(1 inch)
and pipe fittings
• Be sure to install heat insulation on the drain piping.
Heat insulation material: Polyethylene foam with thick-
ness more than 8mm(5/16 inch).
Drain test
The air conditioner uses a drain pump to drain water.
Use the following procedure to test the drain pump operation:
Feed water
Drain Pump
Drain pan
CAUTION : The supplied flexible drain
hose should not be curved, neither
screwed. The curved or screwed hose
may cause a leakage of water.
12 Indoor Unit
Pipe clamp
Indoor unit
Maintenance
drain port
Flexible drain hose
• Connect the main drain pipe to the exterior
(accessory)
and leave it provisionally until the test
Main
comes to an end.
drain pipe
• Feed water to the flexible drain hose and
Drain check the piping for leakage.
port Glue the joint
• Be sure to check the drain pump for normal
operating and noise when electrical wiring
Drain hose connection
Use the clip (accessory)
is complete.
• When the test is complete, connect the flex-
ible drain hose to the drain port on the
indoor unit.
Upward
routing
not allowed
1/50~1/100
MAX 700mm
(27-9/16 inch)
Flexible drain hose Flexible drain hose
1/50~1/100
Flexible drain hose
MAX 700mm
(27-9/16 inch)
Flexible drain hose