LG MULTI V ARNU48GBRZ4 Manual page 30

MULTI V
Indoor Unit
11. Installation
CAUTION
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.
D a r n i P u m
11.6.1 Drain piping of indoor unit with drain pump
• 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 force on the drain port on the indoor unit.
• The outside diameter of the drain connection on the indoor unit is 32 mm (1-1/4 inch).
– Piping material: Use the Polyvinyl chloride pipe, 25 mm (1 inch) pipe fittings.
Pipe clamp
Indoor unit
Maintenance
drain port
※ According to type of indoor unit, external appearance could be different.
• Possible drain head height is upto 700 mm (27-6/19 inch). So the drain head should be installed below 700 mm
(27-6/19 inch).
• Be sure to install heat insulation on the drain piping.
– Heat insulation material: Polyethylene foam with thickness more than 8 mm (5/16 inch).
Drain Pipe
※ According to type of indoor unit, external appearance could be different.
30
p u n u s e
Drainage hole
Upward
routing
not allowed
1/50~1/100 1/50~1/100
Maximum 700mm
(27-9/16 inch)
Drain Pump
Front of view
Ceiling
D a r n i P u m p u s e
Drainage hole
※ According to type of indoor unit, external appearance could be different.
Fresh Air Intake Unit
Hanger
distance
Max 300mm
1~15m
Metal
clamp
Flexible drain hose
Insulation
Thermal insulation
(Local supply)
Drain pipe
Unit
(Local supply)
Elbow
Drain pump
Hanger bracket
1/50~1/100 slope