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• If a drain pipe needs to be installed, insert the accessory drain elbow into the mounting hole at the bottom of the outdoor unit, and
connect a hose with an inside diameter of 15mm to this drain elbow.
(The hose is not supplied.)
If using the drain elbow, install the outdoor unit on a base which is at least 5cm high.
NOTE
In cold regions (where the outdoor air temperature can drop to 0“C or below continuously for 2-3 days), the drain water may freeze,
and this may prevent the fan from operating. Do not use the drain elbow in such cases.
9.3.6.
Connecting the pipes
• Use a clean pipe which does not include water or dust for inside of piping.
• When cutting the refrigerant pipes, a piping cutter must be used. Before connecting the refrigerant pipes, blow nitrogen and blow
off dust in the pipes.
(Never use tools which cause a lot of dust such as a saw and a magnet.)
• When waxing replace nitrogen inside the piping after removing dirt and dust. (In order to prevent oxidation scale from forming
inside the piping).
• The refrigerant pipes are of particular importance.
The installation work for refrigerant cycles in separate-type air conditioners must be carried out perfectly.
1. Refer to the table below for the pipe diameters equivalent lengths and indoor/outdoor unit difference of elevation.
Liquid-side pipes
ø9.53 x 0.8
2. Local pipes can project in any of four directions.
• Make holes in the pipe panels for the pipes to pass through.
• Be sure to install the pipe panels to prevent rain from getting inside the outdoor unit.
[Removing the service panel].
(1)
Remove the two mounting screws.
(2)
Slide the service panel downward to release the pawls. After this, pull the
service panel toward you to remove it.
Pipe diameter (mm)
Gas-side pipes
ø15.88 x 1.0
Equivalent length (m)
50
45
Difference of elevation (m)
30
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