Indoor Unit Drain Piping - LG UU30 Installation Manual

Indoor Unit Drain Piping

CAUTION: Install certainly the decorative panel.
Cool air leakage causes sweating.
Good example
Fit the insulator (this part) and
be careful for cool air leakage
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.
30 Air Conditioner
Water drops fall.
Bad example
Air conditioner
unit
Ceiling
board
Decorative panel
Air
Pipe clamp
Indoor unit
Maintenance
drain port
300mm or less
Clamp metal(attached)
Air conditioner unit
Cool air leakage
(no good)
Ceiling
board
Decorative
panel
Upward
routing
not allowed
1 -1.5m
Drain raising pipe
Drain hose(attached)
Flexible drain hose
Flexible drain hose