Installation Method - LG AP-Z Series Service Manual

Installation Method

1. Procedure
No. Installation works
1 Preparation of tools and installation parts
2 Flaring the pipes
3 Pipe bending
4 Connection of installation parts
(elbows, socket etc)
5 Tighten the flare nut (outdoor)
6 Blowing the pipings
7 Connecting the pipings of the indoor unit.
8 Check a gas-leakage of the connecting
part of the pipings.
9 Air purging of the piping and indoor unit
10 Open the 3-way (liquid side) and
3-way (gas side) valves.
11 Form the pipings
12 Checking the drainage (indoor unit)
13 Connecting the cable between outdoor
and indoor unit
14 Connecting the main cable to outdoor unit
Descriptions
Preparation of installation
To insert the flare nuts, mounted on the
connection parts of both indoor and
outdoor unit, onto the copper pipes.
To reduce the flow resistance of refrigerant.
Connection of long piping
Connecting the pipings of the outdoor unit.
To remove dust and scale in working.
The air which contains moisture and which
remains in the refrigeration cycle may cause a malfunction on the
compressor
To prevent heat loss and sweat
To ensure if water flow drain hose of indoor unit.
Preparation of the operating
Installation of Indoor, Outdoor Unit
Service Manual 25