Trane YUKON MCV Series Installation Manual page 7

MS-SVN007-EN
MS_SVN007_EN.p65
Black
Unit Installation
Connecting the Unit with
Brazing Procedure
1. Cut the copper tube to the
required length with a tube cutter.
It is recommened to cut approx.
20-30 cm. longer than the tube
length you estimate.
2. Remove burrs at the end of the
copper tube with a tube reamer
(Figure 8).
Copper
tubing
Reamer
Figure 8
3. There are 2 ways to connect the
copper tube.
- Use a coupling between the
copper tube of indoor unit and
the copper tube used for
installation (Figure 9).
Solder coupling
Copper tube of
outdoor unit
Figure 9
- Expand the copper tube by using
a swaging tool set (Figure 10).
Swaging
tool
Copper
tube
Figure 10
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4. Clean internal and extenal surfaces
of coupling or expanded tube prior
to brazing.
5. Insulate the entire suction line.
6. Do not allow uninsulated liquid line
to come in direct contact with bare
suction line.
7. Precautions should be taken to
avoid heat damage to the pressure
tap valve core during brazing. It is
recommended that a wet rag be
wrapped around the valve body.
8. It is recommended to use braze
shield, soak pad in water and
place over suction and liquid lines
to protect unit finish.
9. To braze the copper tube, before
brazing a copper tube to a solder
coupling or a copper tube to an
expanded tube, do not forget to
keep them tight as shown in
(Figure 11, 12).
Solder rod
Copper tube
of indoor unit
Copper tube from
outdoor unit
Figure 11
Solder rod
Copper tube from
outdoor unit
Tube holder
Figure 12
(Clamp)
10. Use a dry nitrogen purge and
brazing alloy without flux when
brazing the field line to the copper
factory connection. Flow dry
nitrogen into either valve pressure
tap port, through the tubing and
out the other port while brazing.
11. Braze using accepted good
brazing techniques.
10/7/06, 8:54 AM
Torch
Solder
coupling
Torch
Solder
coupling
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