Instruction manual
15
Remove the vent/flue pipe from the furnace.
4. Cut the vent/ flue pipe at the elbow nearest the cou-
pling end of the pipe (see “ Vent/Flue Pipe Cuts”
figure). The section of pipe attached to the coupling will
reach through the side panel to the induced draft
blower. Discard unused pipe and elbows.
Counterflow
units.
Cut the vent/flue pipe 3.718 inches from the blower
deck coupling (see “Vent/Flue Pipe Cuts” figure).
Save vent/flue pipe attached to blower deck coupling
for use in the alternate location. Discard remaining
pipe and elbows.
4
CUT
AT
ELBOW
NE AR EST
CO U PLIN G
COUPLING
ELBOWS
UPFLOW
Vent/Flue Pipe Cuts
5. Remove plastic plug from alternate vent/flue location.
Relocate and install plug in standard vent/flue location
(top cover).
Counterflow
units.
Remove plastic plug from alternate vent/flue location.
Relocate and install plug in standard vent/flue location
(basepan). Plug remaining hole in blower deck with
plastic plug included in the drain kit bag.
6.
Upflow
and
Counterflow
units
.
Insert cut section of vent/flue pipe and coupling into
alternate vent/flue location. Using a rubber coupling
and worm gear hose clamps from the drain kit bag,
attach the vent/flue pipe and coupling to the induced
draft blower. Secure the coupling to the cabinet using
the screws removed in step 1 or with field-supplied 3/8”
#8 self drilling screws.
WARNING
The rubber elbow is not designed to support
a load. When the rubber elbow is mounted
externally to the furnace cabinet, extreme
care must be taken to adequately support
field-supplied vent/flue piping. As damage
can result in leaks causing bodily injury or
death due to exposure to flue gases,
including carbon monoxide.
ent blockage.
RUBBER
COUPLING
WITH WORM
GEAR CLAMPS
RUBBER
COUPLINGS
WITH WORM
GEAR CLAMPS
COMBUSTION
AIR PIPE
(DIRECT VENT ONLY)
COMBUSTION
AIR PIPE
(DIRECT VENT ONLY)
VENT/FLUE
PIPE
VENT/FLUE
PIPE
90 PVC
ELBOW
(NON-DIRECT VENT)
90 PVC
ELBOW
(NON-DIRECT VENT)
STANDARD CONNECTIONS
OR
OR
UPFLOW COUNTERFLOW
ALTERNATE FURNACE CONNECTIONS
If the standard locations are undesirable for a specific
installation, alternate side panel locations are available for
both combustion air inlet and vent/flue pipe connections.
These locations may be of particular benefit to upright
upflow installations requiring additional access to an A coil,
or to upright counterflow installations requiring additional
access to a filter or electronic air cleaner, or to horizontal
installations desiring vent/flue (and combustion air intake)
piping run vertically from the side of the cabinet.
NOTE: Standard and alternate locations can be combined
(i.e., an installation may use the standard combustion air
intake location but use the alternate vent/flue location or
vice versa), if needed.
CAUTION
Edges of sheet metal holes may be sharp.
Use gloves as a precaution when removing
hole plugs.
Alternate Vent/Flue Location
The alternate vent/flue location is the large hole directly
in
line with the induced draft blower outlet. To use the
alternate vent/flue location refer to the following steps, the
“Vent/Flue Pipe Cuts” figure, and the “Alternate Vent/Flue
Location” figure.
NOTE: Counterflow instructions follow the upflow instruc-
tions.
1. Remove and save the four screws securing the vent/
flue coupling to the furnace top panel.
Counterflow
units.
Remove and save the four screws securing the vent/
flue coupling to the furnace basepan. Also remove the
three screws securing the furnace’s internal vent/flue
piping to the blower deck.
2.
Upflow
and
Counterflow
units
.
Loosen the worm gear hose clamps on the rubber
elbow and detach it from both the induced draft blower
and the vent/flue pipe.
3.
Upflow
and
Counterflow
units
.