Indoor Unit Drain Piping; Drain Test - LG ARNU483BRZ4 Manual De Instalación

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 0.2 inch.
• 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 in-
door unit is 1.25 inch.
Piping material: Polyvinyl chloride pipe inner
diometes Ø 0.98 inch and pipe fittings
• Be sure to install heat insulation on the drain piping.
Heat insulation material: Polyethylene foam
with thickness more than 0.3 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 strained.
A strained hose may cause leakage
of water.
CAUTION
Front of view
Ceiling
Drain Pump
• Connect the main drain pipe to the exterior and
Flexible drain hose
(accessory)
Main
• Feed water to the flexible drain hose and check the
drain pipe
• Be sure to check the drain pump for normal opera-
Drain
port
Glue the joint
Drain hose connection
• When the test is complete, connect the flexible
Use the clip (accessory)
Drainage hole
use
Pipe clamp
Indoor unit
Maintenance
drain port
leave it provisionally until the test comes to an end.
piping for leakage.
tion and noise when electrical wiring is complete.
drain hose to the drain port on the indoor unit.
Installation
Upward
routing
not allowed
1/50~1/100
MAX 27.5 inch
Hanger
distance
Hanger Bracket
Max 11.8 inch
39.4~590 inch
1/50~1/100 slope
Metal
clamp
Flexible drain hose
Insulation
Installation Manual 13