Panasonic S-200PE2E5 Technical Data & Service Manual page 45

I nstalling Distribution Joint Kit (for Twin &
Double-Twin) (CZ-P155BK1 & CZ-P680BK2)
For branching tubes, install 150 mm or longer (including
reducer) straight tubing up to the point where the tube
branches (or after the point where the tubes join together).
150 mm or longer straight tubing up
Use a tube cutter and cut at the size position that
corresponds to the fi eld-supply tube size selected based
on the total indoor unit capacity. (If the size is the same as
the tube end size, cutting is not necessary.)
If the reducer that was supplied in the package is used,
perform brazing on-site.
NOTE
Do not cut in such a way that applies excessive force and
causes deformation of the tube. (This will prevent insertion
of the connecting tube.)
Cut at a position that is as far away as possible from the
dowel pin.
If the distribution joint will be cut before use, cut on the
line marked "cutting point" in the fi gure below.
Dowel pin Cutting location
Cut as far away as possible
(to ensure proper insertion
clearance for the connecting tube)
After cutting the tube, be sure to remove any burrs and to
fi nish the end surface correctly.
(If there is excessive crushing or indentation of the tube,
use a tube expander to expand it.)
Check that there is no dirt or other foreign substance
inside the distribution tubing.
Install the distribution tubing so that it is either horizontal
or vertical.
Use the supplied thermal insulation to insulate the
distribution tubing.
(If other insulation is used, be sure to use insulation that
can withstand temperatures of at least 120°C.)
Horizontal installation
Outdoor unit side
Vertical installation (directed upward or downward)
Nitrogen gas replacement required for tube
brazing
If nitrogen replacement is not done when brazing is
performed on the indoor and outdoor unit refrigerant tubing,
oxide scale will occur. This scale will clog the solenoid
valves, strainers, and other parts, leading to malfunction.
Therefore be sure to replace the air in the tubing with
nitrogen when performing brazing in order to prevent
problems from oxide scale.
1-39
Horizontal line
indoor unit side
Install at a positive
angle.(0°)
Example showing
tubing directed upward
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