LG ARWN100LA2.EWGBLEU User Manual download pdf (Page 20)

Installation

20 Outdoor Unit

When installing the branch pipe vertically between the outdoor units, the refrigerant can be uneven

between the outdoor units, leading to compressor burn and reduced capacity

Slave

Outdoor Unit

Master

Outdoor Unit

2 Outdoor Units

1) For the high/low pressure common pipe, connect both

master outdoor unit and slave outdoor units to the pipe

by using elbows.

2) For cutting the pipe, connect the high/low pressure com-

mon pipe after removing burrs, dusts and foreign materi-

al within the pipe. Otherwise, the product may not oper-

ate due to sludge within the pipe.

3) For the working part leakage test, apply the nitrogen gas

pressure of 3.8MPa (38.7kgf/cm

4) The vacuum criteria is to maintain the vacuum level to

less than 5 Torr 1 hour after reaching 5 Torr. (Execute

the vacuum work again when it is below the criteria.)

5) Open the valve with the hexagon wrench.

* Install the branch pipe between outdoor units so

that the outlet pipe is parallel to the surface.

8. Connection of high/low pressure common pipe

9. Connecting branch pipe between outdoor units

Connecting

branch pipe

Combination specification Gas pipe Liquid pipe

Do not cut for

70mm or less

Execute the welding

while pouring

nitrogen

Outdoor pipe

Main pipe

ARCNN20

Horizontal installation

Location when viewed from B

Horizontal surface

A. Outdoor unit side

B. Connecting outdoor unit side

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LG ARWN100LA2.EWGBLEU User Manual Page 20