8
No. Installation works Descriptions
1
Preparation of tools and
installation parts
Preparation of installation
2 Flaring the pipes
To insert the flare nuts, mounted on the connection parts of both indoor
and outdoor unit, onto the copper pipes
3 Pipe bending
4
Connection of installation parts
(elbows, socket etc)
Connection of long piping
5 Tighten the flare nut (outdoor) Connecting the pipings of the outdoor unit
6 Blowing the pipings To remove dust and scale in working
7 Tighten the flare nut (indoor) Connecting the pipings of the indoor unit
8
Check a gas-leakage of the
connecting part of the pipings
9
Air purging and vacuuming of the
piping and indoor unit
The air which contains moisture and which remains in the refrigeration
cycle may cause a malfunction on the compressor
10
Open the liquid side and gas side
valves
11 Form the pipings To prevent heat loss and sweat
12
Checking the drainage (indoor
unit)
To ensure if water flow drain hose of indoor unit
13
Connecting the cable between
outdoor and indoor unit
Preparation for operation
14
Connecting the main cable to
indoor unit
15
Cooling operation (Use the remote
control or display of the indoor
unit)
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