LG MT08AH.NR0R0 User Manual download pdf (Page 18)

CAUTION:

Install certainly the decorative panel.

Cool air leakage causes sweating.  Water drops fall.

• 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.

• Be sure to execute heat insulation on the

drain piping.

DRAIN TEST

The air conditioner uses a drain pump to drain water.

Use the following procedure to test the drain pump operation:

• Connect the main drain pipe to the exterior and leave

it provisionally until the test comes to an end.

• Feed water to the flexible drain hose and check the

piping for leakage.

• Be sure to check the drain pump for normal

operating and noise when electrical wiring is

complete.

• When the test is complete, connect the flexible drain

hose to the drain port on the indoor unit.

Air conditioner

unit

Ceiling

board

Decorative panel

Decorative

panel

Fit the insulator (this part) and

be careful for cool air leakage

Good example

Air

Cool air leakage

(no good)

Bad example

Ceiling

board

Air conditioner unit

Flexible drain hose

Maintenance

drain port

Upward

routing

not allowed

Pipe clamp

Indoor unit

1/50~1/100

MAX 700mm

Flexible drain hose

Feed water

Drain Pump

Drain pan

Flexible drain hose

(accessory)

Main

drain pipe

Glue the joint

Drain

port

Drain hose connection

Use the clip (accessory)

Flexible drain hose

Piping material: Polyvinyl chloride pipe VP-25

and pipe fittings

Heat insulation material: Polyethylene foam with thickness more than 8 mm.

Indoor Unit Drain Piping

18 Multi-Type Air Conditioner

Installation of Indoor

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 28 29

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LG MT08AH.NR0R0 User Manual Page 18

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