Finish Flange; Rubber Grommets; Inline Drain Assembly; Pvc Tee, Reducer, And Hose Barbs - Nordyne M4RC Upflow Installation Instructions Manual

Finish Flange (Figure 26)
The fi nish fl ange must be installed to vent the combustion
air pipe through the top of the furnace. NOTE: For proper
installation, it is important that the pipe and screw holes
in the fi nish fl ange, gasket, and cabinet are aligned.
1. Position fl ange gasket and fi nish fl ange on top of the
furnace cabinet. Evenly align vent hole and screw
holes in gasket, fl ange, and cabinet.
2. Secure fl ange and gasket to cabinet with three fi eld
supplied sheet metal screws.
Hole for Flue
Vent Pipe
Figure 26. Finish Flanges
Rubber Grommets (Figure 27)
The 2 1/4" rubber grommet is used to seal the opening
between the furnace cabinet and the 2" PVC vent pipe.
The rubber grommet should be installed in one of the 3"
holes prior to running the vent pipe out of cabinet. No
sealants are required.
The 7/8" rubber grommet is used to seal the opening
between the furnace cabinet and the gas pipe. The
rubber grommet should be installed in the 1 5/8" hole
prior to running the gas pipe into the cabinet. No sealants
are required.
The 3/4" rubber grommet is used if venting out the left
side of the cabinet and the drain tube is routed through
the blower deck. Remove the plastic plug from the hole
and install the grommet before routing the drain tube.
Inline Drain Assembly (Figure 28)
1. Install the inline drain assembly on the inducer
assembly.
2. Insert the vent pipe through the hole in the cabinet
and into the inline drain assembly.
3. Verify the vent pipe, inline drain assembly, and inducer
are aligned properly for drainage of condensate.
4. Tighten both clamps to secure the inline drain assembly.
5. Insert smaller end of the 3/8" x 1/2" hose barb into the
lowest port of the inline drain assembly. Connect the
condensate drain tube to the hose barb and cap off
the other port.

Finish Flange

Flange Gasket
Hole for Inlet
Air Vent Pipe
PVC TEE , Reducer & Hose Barbs (Figure 29, page 22)
The 2" PVC tee, reducer, and hose barb are used when
the inducer is rotated to vent out thru the left or right side
of the furnace cabinet. The PVC TEE and reducer are
not provided in the extra parts bag.
The 1/2" x 3/4" hose barb can be used to route the
condensate drain to the outside of the cabinet. It
must be installed from inside the cabinet with the
threaded end inserted thru the 1 1/16" hole. The
Condensate drain should be connected to the barbed
end. Attach 1" PVC drain line to the threaded end.
IMPORTANT NOTE: Before permanently installing
these components, it is recommended you dry-fi t
them fi rst to ensure proper fi t and alignment with
other vent pipes.
1. Install the 1/2" x 1/2" hose barb on the 2" PVC reducer
2. Install the tee on the 2" vent pipe that is extending out
ø 2 1/4" Rubber
Grommet
ø 3/4" Rubber
Grommet
Figure 27. Rubber Grommets
Vent Pipe
Clamps
3/8" x 1/2" Hose Barb
Condensate Drain Tube
Figure 28. Inline Drain Assembly
with an adequate amount of approved sealant on the
threads. Do not over tighten the hose barb!
the side of the cabinet. Use appropriate primer and
cement to permanently bond the tee to the 2" PVC
pipe.
ø 7/8" Rubber
Grommet
Inducer
Cap
Inline Drain
Assembly
21