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3. Check the actual size of the new orifice. The size is
stamped on its side. Do not use pin gauges to measure
the orifice diameter.
4. Insert the new orifice into the distributor body, rounded
end down. See Figure 4.
CaUtion:
to prevent damage to the unit or internal
components, it is recommended that two
wrenches be used when loosening or tightening
nuts. Do not over tighten!
5. Realign the assembly nut on the distributor body and
hand tighten both components. Mark a line on both
bodies and then tighten an additional 1/4 turn using two
wrenches. The movement of the two lines will show how
much the nut is tightened. If a torque wrench is used,
tighten to 10-12 ft. lbs. or 14-16 Nm.
6. Proceed to the appropriate lineset connection section.
See pages 4 - 5.
Figure 2. loosening of nut & Distributor body
Carefully remove the
restrictor orifice from
the distributor body
Figure 3. removal of orifice
Install restrictor with
rounded end down
in the distributor
Figure 4. restrictor insertion into Distributor body
installing a tXV Kit
A separate TXV kit and C5 replacement tube kit are
required. See Tables 5 - 7 (pages 6 - 8).
CaUtion:
to prevent damage to the unit or internal
components, it is recommended that two
wrenches be used when loosening or tightening
nuts. Do not over tighten!
1. Using two wrenches, loosen the distributor and liquid line
body halves. Turn the assembly nut counter-clockwise.
2. Discard the removed liquid line.
3. Insert a light-gauge wire hook between the distributor
body and the restrictor orifice while being careful not
to scratch either part. Carefully remove the restrictor
orifice from the distributor body. See Figure 3.
4. Connect the distributor to the outlet side of the valve.
5. Braze the new liquid line from the C5 replacement
tube kit and liquid line stub & screen (included
in TXV kit) with dry nitrogen flowing through the
joints. important: Brazing operation should be
performed before connecting assembly to the TXV.
This protects the TXV from heat. Liquid nitrogen
prevents internal oxidation and scaling from occurring.
notE: The liquid line is sold separately, see Table 5
(page 6) for appropriate part number.
6. Connect the liquid line to the inlet side of the valve.
7. Realign the assembly nut on the distributor body and
hand tighten both components. Mark a line on both
bodies and then tighten an additional 1/4 turn using
two wrenches. The movement of the two lines will show
how much the nut is tightened. If a torque wrench is
used, tighten to 10-12 ft. lbs. or 14-16 Nm.
8. Using two wrenches, tighten both ends of the valve.
9. Secure the sensing bulb to the suction line using the
clamp supplied with the kit.
10. Wrap the bulb, clamp, and suction line together with
tar tape or other insulating material.
important notES:
• The sensing bulb must be located flush against the
suction line for optimum heat transfer.
• Avoid attaching the sensing bulb to the lowest part of
the suction line where condensate may accumulate.
• Do not locate the sensing bulb on vertical sections
of the lineset.
• For horizontal lines, the bulb should not be located
at 12 or 6 o'clock position of the suction line. the
best location is at 4 or 8 o'clock.
• For additional information on proper sensing bulb
locations, please refer to the valve manufacturer's
instructions.
11. Remove and discard the Schrader valve from the
suction header port. important: The TXV will not
function if the valve is not removed.
3
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