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Figure 5. Orifice Insertion in Distributor Body
5.
Insert the new orifice in the distributor body
rounded end down as shown in Figure 5.
6.
After installing the orifice in the distributor
body, realign the assembly nut to the dis-
tributor body. Mark a line along both bodies
after hand tightening and then tighten an
additional 1/4 turn. Caution: Do not over-
tighten! 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:
7.
Remove the protective caps from the coil
and refrigerant line set and also remove the
hole grommets and tube close-off insula-
tion from around the tubes.
8.
Cut the line set tubing to the proper length.
Be sure that the tubing has been sized in
accordance with the outdoor unit specifica-
tions.
9.
Inspect both refrigerant lines. The ends of
the lines must be round, clean, and free of
any burrs.
10. Insert the line set tubes into the coil tube
stubs until they bottom out.
11. Braze the individual connections with dry
nitrogen flowing through the joints to elimi-
nate internal oxidation and scaling.
NOTE: On C4 (R-410A refrigerant) models
which use a TXV, it is recommended to
wrap a wet rag around the sensing bulb
located on the suction line while brazing.
12. Check the assembly for leaks with dry
nitrogen.
13. On horizontal applications of C4 (R-410A
refrigerant) models with TXV valve, re-
position the sensing bulb on the suction line
so it is in the 10 o'clock to 2 o'clock position
on the suction tube.
14. Replace the tube close-off insulation.
5. 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 pos-
sible 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
the drain pan and cause a condensate
leak.
7
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