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1-325
Installing Distribution Joint Kit (for Twin &
Double-Twin) (APR-P160BG)
Use a tube cutter and cut at the size position that
corresponds to the 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.
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.)
For size selection, refer to “Information for the
Person in Charge of Installation” and other
materials that were supplied with the outdoor
unit.
Cut at a position that is as far away as possible
from the dowel pin.
After cutting the tube, be sure to remove any burrs
and to 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.)
For details, refer to “Information for the Person in
Charge of Installation”.
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.
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NOTE
If the distribution joint will be cut before use, cut on the
line marked “cutting point” in the gure below.
Stopper (boss)
Cutting point
Make this as long as possible.
Insertion length of the connecting tube
Horizontal installation
Outdoor unit
Side
Indoor unit
Side
15° to 30°
upward slant
Vertical installation (directed upward or downward)
SM830160-03ClassicPAC-iA4.ind325325SM830160-03ClassicPAC-iA4.ind325325 2010/02/1610:26:502010/02/1610:26:50
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