LG LVN180HV4 Manuel d'utilisateur télécharger pdf (Page 130)

Figure 177:Checking the Drain Pump.

For Existing Ceilings

1. Use anchors when installing the indoor unit in an existing ceiling.

2. Ceiling height is shown on the side of the installation guide (template). Adjust the height of the unit accordingly. Adjust the clearance

before hanging the indoor unit.

3. Remove the temporary washer plate and position the indoor unit hanger brackets on the bolts. Secure with nuts and washers on the top

and bottom of the hanger brackets.

4. Ceiling-cassette indoor units are equipped with a built-in drain pump and float switch, therefore, the unit must be installed horizontally or

condensate will drip out and cause product malfunction. Measure the unit at each corner to verify that it is level.

5. Remove the installation guide (template).

For New Ceilings

1. Use a sunken insert, a sunken anchor, or any other field-supplied part to reinforce the

ceiling so that it can bear the weight of the indoor unit. Use a temporary washer plate

to more easily set up the unit suspension location.

2. Ceiling height is shown on the side of the installation guide (template). Adjust the

height of the unit accordingly. Adjust the clearance before hanging the indoor unit.

3. Refer to the installation guide (template) for the dimensions to the ceiling opening.

Match the center of the indoor unit (labeled) to the center indicated on the installation

guide.

4. Align the installation guide (template) with the label attached to the unit (affixing the

template to the unit if desired) to properly place the unit.

5. Remove the temporary washer plate and position the indoor unit hanger brackets

on the bolts. Secure with nuts and washers on the top and bottom of the hanger

brackets.

6. Ceiling-cassette indoor units are equipped with a built-in drain pump and float switch, therefore, the unit must be installed horizontally or

condensate will drip out and cause product malfunction. Measure the unit at each corner to verify that it is level.

7. Remove the installation guide (template).

Installation and Best Layout Practices

FOUR-WAY CEILING CASSETTE INDOOR UNITS

Flat washer for M10

(field supplied)

Flat washer for M10

(field supplied)

Hanging bolt

(W3/8 or M10)

Nut

(W3/8 or M10)

Nut

(W3/8 or M10)

Spring washer

(M10)

Figure 175:Hanging the Indoor Unit.

Installing the Drain System

• Drain piping must have downward gradient of at least 1/50 to 1/100; to prevent

reverse flow, slope should not be straight up and down.

• Do not damage the drain port on the indoor unit when connecting the field-

supplied drain piping.

• Drain piping specifications:

- Indoor Unit Drain Connection: 1-1/4 inch outside diameter.

- Field-Supplied Drain Piping: Polyvinyl chloride piping with 1-inch inside diameter

and pipe fittings.

1/50~

1/100

<27-9/16 inches

Pour Water

Drain Pump

Drain Pan

Flexible drain hose

(accessory)

Field-Installed

Drain Piping

Glue the Joint

Drain

Port

Drain Hose Connection

Use the clip (accessory)

Checking the Drain Pump

The unit uses a drain pump to remove condensate. The pump must be tested before the

system operates.

• Connect flexible drain hose to the field-installed drain piping; leave it as is until the test

is complete.

• Pour water into the flexible drain hose and check for leaks.

• After power wiring installation is complete, operate the drain pump to see if it sounds

and functions properly.

• After the test is complete, connect the flexible drain hose to the indoor unit drain port.

Figure 176: Indoor Unit Drain Piping.

Due to our policy of continuous product innovation, some specications may change without notication.

130 | CEILING-CASSETTE

Multi F and Multi F MAX Indoor Unit Engineering Manual

MULTI

MAX

MULTI

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LG LVN180HV4 Manuel d'utilisateur Page 130

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