Indoor Unit Drain Piping - LG MULTI V ARNU07GBHA4 Installation Manual

1. Install declination of the indoor unit is very important for the drain of the duct type air conditioner.
2. Minimum thickness of the insulation for the connecting pipe shall be 5mm.
• The unit must be horizontal or declined to the drain hose connected when finished
installation.
Drain Pump
Drainage hole
unuse

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 inner
diometes Ø 25mm and pipe fittings
• Be sure to install heat insulation on the drain piping.
Heat insulation material: Polyethylene foam with
thickness more than 8 mm.
CAUTION
Front of view
Ceiling
Drain Pump
Drainage hole
use
Pipe clamp
Indoor unit
Maintenance
drain port
Installation
Upward
routing
not allowed
1/50~1/100
MAX 700mm
Installation Manual 11