Indoor Unit Drain Piping - LG UU21WH Installation Manual

The indoor unit installation
Hanging bolt
(W3/8 or M10)
Nut
(W3/8 or M10)
Spring washer
(M10)
• The following parts is option.
Hanging Bolt
Nut
Spring Washer - M10
Plate Washer - M10
CAUTION: Tighten the nut and bolt
to prevent unit falling.

Indoor Unit 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.
Piping material: Polyvinyl chloride pipe VP-25
and pipe fittings
• 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
300mm from the unit.
Heat insulation material: Polyethylene foam with thickness more than 8 mm.
8 Air Conditioner
Keep the length of the bolt
from the bracket to 40mm
Flat washer for M10
(accessory)
Flat washer for M10
(accessory)
Nut
(W3/8 or M10)
- W 3/8 or M10
- W 3/8 or M10
Air Conditioner body
Ceiling board
Paper model
for installation
Adjust the same height
• Drill the piping hole on the wall slightly tilted to the
outdoor side using a Ø 70 hole-core drill.
Indoor
Pipe clamp
Indoor unit
Maintenance
drain port
Clamp metal(attached)
Ceiling
Ceiling board
Set screw of
paper model (4 pieces)
Open the ceiling board
along the outer edge of the
paper model
Wall
Outdoor
Upward
routing
not allowed
300mm or less
1 -1.5m
Drain raising pipe
Drain hose(attached)