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8) Remove the corresponding drain line knock-
out from the coil access door to allow
access to the horizontal drain.
9) Replace the door.
Note: All condensate pans have primary
and secondary drain connections to meet
FHA requirements. If the application is lo-
cated in or above a living space where
damage may result from condensate over-
flow, a separate 3/4 inch drain must be
provided from the secondary drain connec-
tion and a secondary drain pan must be
installed under the entire unit. Run second-
ary drain lines to a place where they are
noticeable if used.
4. REFRIGERANT LINE
CONNECTIONS
NOTE – Move to instruction step #7 when
installing a C4 series (R-410A refrigerant) coil
with factory installed TXV valve.
6
Figure 3. Wrenches on Distributor Body
and Assembly Nut
Figure 4. Removal of Orifice
NOTE – Before proceeding with the connection
of refrigerant lines, confirm that the orifice size
meets the requirements outlined in the outdoor
unit installation manual. Factory-installed orifice
sizes are listed in the Specifications section. If
the orifice size is incorrect, it should be replaced,
following the steps below:
1.
Loosen the orifice/distributor body halves
by applying two wrenches and squeezing
them together, as shown in Figure 3 , to turn
the assembly nut counter-clockwise.
2.
Continue to unscrew the assembly nut to
separate it from the distributor body portion.
3.
Insert a light-gauge wire hook between the
distributor body and the orifice to lift the
orifice out of the body. (See Figure 4)
Remove the orifice being careful not to
scratch either part.
4.
Check the actual size of the new orifice (the
size is stamped on the side of the orifice).
Do not use pin gauges to measure the
orifice diameter.
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