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REFRIGERANT INSTALLATION
For indoor unit refrigerant piping installation, refer to the Installation Instructions that comes with that indoor unit.
Do not reuse existing piping, install new piping.
1. Precautions during refrigerant installation.
●
Use clean pipes with no dust inside.
The pipe may corrode with the presence of fluorine dust which will adversely affect
the refrigerant piping system due to deterioration of the refrigerant oil, etc.
●
This unit is specifically for R410A. Ensure to adhere to the following items and install
accordingly:
• Use pipe cutters and flaring tools which are specially designed for use with R410A.
• When connecting with flaring tools, coat the flare section with ether-based oil.
• Ensure to use flare nuts supplied with the unit when connecting this unit.
• Only for storing or for open pipes.
• Set the lower limit of the allowable pipe length to 7.5 m.
If the pipe is shorter than 7.5 m, the refrigerant may become overfilled and a
problem such as abnormal high pressure could occur.
2. The local pipes can protrude from any four directions.
●
Make holes in the pipe panel for the pipes to penetrate it and lay the pipes
accordingly.
• It is recommended to apply additional substance to the cut area for anti-rust
protection.
●
Ensure to install pipe panels to prevent rain water from getting into the unit.
●
Close the gap at the pipe connected area with putty or heat insulator (locally
supplied).
• If an insect or small animal enters the outdoor unit, there is the risk of shorting in
the product electronic casing.
[Remove the front panel]
(1) Remove the 2 mounting screws.
(2) Slide the front panel using your hands downwards to release the pawls.
Then remove by pulling the panel towards you.
Front panel
Mounting screws for
the front panel
Rear
direction
Sideways
direction
Rear piping
panel
Front piping
panel
Downward
direction
Front
direction
Putty or heat
insulator (locally
supplied)
Piping
Prevention measures to avoid small
animals from entering
Front panel
Mounting screws for
the front panel
Rear
direction
Sideways
direction
Rear piping
panel
Front piping
panel
Downward
direction
Front
direction
Putty or heat
insulator (locally
supplied)
Piping
Prevention measures to avoid small
animals from entering
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