7
6. Insert the new orifice in the distributor body
rounded end down
as shown in Figure 5.
7. After installing the orifice in the distributor
body, realign the assembly nut to the
distributor body. Mark a line along both
bodies after hand tightening and then tighten
an additional 1/4 turn.
Caution: Do not
overtighten!
The misalignment 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.
Line Connections:
8. Making note of orientation, remove the hole
grommets and tube close-off insulation from
around the coil and refrigerant line set.
9. Remove the valve cap from the end of the
liquid line. Relieve all pressure from the coil
by depressing the valve. Remove the valve
core.
Note:
On models which use a TXV, it is
recommended to wrap a wet rag around the
suction line between the sensing bulb and the
line set braze joint before applying any heat.
10. Unbraze and remove the cap on the suction
line. Unbraze and remove the valve core
holder on the liquid line.
11. Cut the line set tubing to the proper
length. Be sure that the tubing has been
sized in accordance with the outdoor unit
specifications.
12. Inspect both refrigerant lines. The ends of
the lines must be round, clean, and free of
any burrs.
13. Place grommets in proper orientation onto
line set with sufficient distance to braze
joint.
14. Insert the line set tubes into the coil tube
stubs until they bottom out.
15. Braze the individual connections with
dry nitrogen flowing through the joints to
eliminate internal oxidation and scaling.
NOTE:
On models which use a TXV, it is
recommended to wrap a wet rag around
the suction line between the sensing bulb
and the line set braze joint before applying
any heat.
16. Check the assembly for leaks.
17. On horizontal applications of models with
TXV valve, re-position the sensing bulb on
the suction line so it is in the 4 o'clock or 8
o'clock position on the suction tube.
18. Properly dispose of all removed parts.
6. COMPLETING THE INSTALLATION
Condensate Drain:
CAUTION:
The indoor coil must be checked to
ensure a level installation. Failure to do
so may result in improper condensate
disposal, causing structural damage,
premature equipment failure, or
possible personal injury.
1. The coil condensate pan is furnished with
3/4" NPSC drain connections. Use a PVC
or similar material fitting to attach the drain
line to the pan. The fitting should be hand
tightened only.
Overtightening may crack
Figure 3. Wrenches on Distributor Body
and Assembly Nut
Figure 4. Removal of Orifice
Figure 5. Restrictor Insertion in
Distributor Body
