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Installation Method
No.
1
Preparation of tools and installation parts
2
Flaring the pipes
3
Pipe bending
Connection of installation parts (elbows,
4
socket etc)
5
Tighten the flare nut (outdoor)
6
Blowing the pipings
7
Tighten the flare nut (indoor)
Check a gas-leakage of the connecting part of
8
the pipings.
9
Vacuum drying of the piping and indoor unit
Open the 3-way (liquid side) and 3-way (gas
10
side) valves.
11
Form the pipings
12
Checking the drainage (indoor unit)
Connecting the cable between outdoor and
13
indoor unit
14
Connecting the main cable to outdoor unit
Supply the power to the crankcase heater
15
(Before the operating the unit)
Cooling operation (Use the remote control or
16
display of the indoor unit)
Installation works
INSTALLATION OF UNIT
Descriptions
Preparation of installation
To insert the flare nuts, mounted on the con-
nection parts of both indoor and outdoor unit,
onto the copper pipes.
To insert the flare nuts, mounted on the con-
nection 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.
Connecting the pipings of the indoor unit.
The air which contains moisture and which re-
mains 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
To prevent the liquid back to the compressor.
(Heat pump only)
9
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