Panasonic S-36PU1E5 Technical Data & Service Manual page 182

1
REFRIGERANT INSTALLATION
For indoor unit refrigerant piping installation, refer to the installation instruction manual 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 fl uorine dust which will adversely affect the refrigerant piping system due to
deterioration of the refrigerant oil, etc.
This unit is specifi cally for R410A. Ensure to adhere to the following items and install accordingly:
• Use pipe cutters and fl aring tools which are specially designed
for use with R410A.
• When connecting with fl aring tools, coat the fl are section with
ether-based oil.
• Ensure to use fl are 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 5m.
If the pipe is shorter than 5m, the refrigerant may become
overfi lled 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.
Mounting screws for
the front panel
Piping
1-176
Front panel
direction
Rear piping
panel
Sideways
Front
direction
direction
Downward
Front piping
direction
panel
Putty or heat
insulator (locally
supplied)
Prevention measures to avoid small
animals from entering
Rear