11
c. Locate center of fuel line hole, measured 23-
1/4” from the rear wall and 6-5/8” to the left
of center of the fl oor cut-out (See Figure 12)
or 5-1/4” to the left of center of the fl oor cut-
out, or for entry through right-side of furnace
measured 9” to the right of center of the fl oor
cut-out.
d. Cut out fl oor opening and one fuel line hole.
IMPORTANT:
Refer to the installation instructions
provided with optional air conditioning
packages when installing furnaces
with optional cooling coil cabinet
or with optional C***-series indoor
coils.
CUT OUT CEILING AND ROOF OPENINGS
a. Locate center of Roof Jack opening, measured
13 1/2” from the rear wall of closet or alcove
along the center line of furnace and fl oor
opening. (See Figure 13)
b. Cut ceiling and roof holes as follows:
Ceiling Hole = 8-3/4” (222 mm) diameter
Roof Hole = 9-3/8” (238 mm) diameter
c. DO NOT ALLOW DEBRIS TO FALL INTO THE
FURNACE. THIS COULD CAUSE UNSAFE
OPERATION AND VOIDS THE FURNACE
WARRANTY. Use the top cap that comes
with the furnace packaging (or alternate pro-
tector) to prevent debris from falling into the
furnace before the fi nal roof jack connection
is made.
CUT DUCT OPENING (FINGER TABBED
ONLY)
a. Place duct connector through the fl oor opening
with bottom tabs resting on top of the supply
air duct.
b. Center duct connector and push back against
rear edge of fl oor opening.
c. Mark cut-out location (tab area) and remove
duct connector.
Figure 15. Duct Connector
Figure 14. Mounting Plate
REAR WALL
MOUNTING
PLATE
FLOOR
OPENING
FUEL
LINE
HOLES
SUPPLY AIR DUCT
CUT DUCT OPENING
1/16TH. LARGER THAN
DUCT CONNECTOR
REAR WALL
SUPPLY AIR DUCT
FUEL
LINE
HOLES
MOUNTING
PLATE
FLOOR
OPENING
UNDER DUCT OPENING
Non-Platinum Series
Platinum Series
DUCT
CONNECTOR
MOUNTING
PLATE
SCREWS
FUEL
LINE
HOLES
14” SUPPLY
CONNECTION
