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17
FLANGE
CUT HERE
3.75"
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.
T
HE
RUBBER
ELBOW
IS
NOT
DESIGNED
TO
SUPPORT
A
LOAD
. W
HEN
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
.
WARNING
7. Upflow and Counterflow units.
For upright installations, externally mount the rubber elbow
to the vent/flue coupling using a worm gear hose clamp.
Secure field supplied vent/flue piping to the rubber elbow
using a worm gear hose clamp. NOTE: Use of the alternate
vent/flue location for upright installations, requires the drain
trap be installed on the same side of the unit as the flue
pipe.
8. Upflow and Counterflow units.
For horizontal installations, externally secure the field-
supplied vent/flue pipe directly to the vent/flue coupling
using a PVC or ABS coupling or elbow.
4
CUT PIPE PER
VENT/FLUE
PIPE CUTS
DIAGRAM
UPFLOW
REMOVE
4 SCREWS
3
REMOVE
PIPE
2
DETACH RUBBER
ELBOW FROM
ID BLOWER AND
VENT/FLUE
PIPE
1.
REMOVE
4 SCREWS
2
DETACH RUBBER
ELBOW FROM
ID BLOWER AND
VENT/FLUE
PIPE
COUNTERFLOW
3
REMOVE
PIPE
5
REMOVE
A
ND RELOCATE
5
REMOVE
AND RELOCATE
1
REMOVE
3 SCREWS
1
4
CUT PIPE PER
VENT/FLUE PIPE CUTS
DIAGRAM
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
90º PVC
ELBOW
(NON-DIRECT VENT)
90º PVC
ELBOW
(NON-DIRECT VENT)
STANDARD CONNECTIONS
OR
OR
UPFLOW COUNTERFLOW
ALTERNATE FURNACE C ONNECTIONS
If the standard locations are undesirable for a specific installation,
alternate side panel locations are available on the upflow models for
the vent/flue. Counterflow furnaces include provisions for both alter-
nate vent/flue and combustion air piping. 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 (upflow and counterflow) and combus-
tion air intake (counterflow only) 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), if needed.
E
DGES
OF
SHEET
METAL
HOLES
MAY
BE
SHARP
. U
SE
GLOVES
AS
A
PRECAUTION
WHEN
REMOVING
HOLE
PLUGS
.
WARNING
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 instructions.
1. Remove and save the four screws securing the vent/flue
coupling to the furnace top panel.
Counterflow units.
1. 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.
Remove the vent/flue pipe from the furnace.
4. Cut the vent/flue pipe 3.75 inches from the flanged 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 remaining pipe
and elbows.
Counterflow units.
Cut the vent/flue pipe 3.75 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.