20
A
LTERNATE
V
ENT
/F
LUE
L
OCATION
The alternate vent/flue location is the large hole directly
in line with
the induced draft blower outlet. To use the alternate vent/flue loca-
tion on an upflow / horizontal model, refer to the following steps
and the “Alternate Vent/Flue Location” figure. To use an alternate
vent location on a counterflow / horizontal model, a special kit is
required.
NOTE:
In the horizontal left installation position, a means of
condensate collection must be provided to keep vent pipe
condensate from entering the draft inducer housing. If the vent-
drain elbow is eliminated from the installation; an RF000142 kit
must be used.
1. Remove screws from vent flange.
2. Remove internal elbow and vent pipe.
3. Cut pipe 2 1/2” from flange.
4. Remove cabinet plug adjacent to inducer outlet and install an
original cabinet vent hole.
5. Install RF000142 coupling on inducer outlet.
6. Install flanged vent section removed in step 2 & secure with clamps.
7. Secure flange to cabinet using screws removed in step 1.
A
LTERNATE
C
OMBUSTION
A
IR
P
ROVISION
(Upflow / Horizontal models only)
When using the alternate venting location, either in a horizontal left side down
installation or a vertical installation using down – venting, an alternate combustion
air opening can be used. A locating dimple is located on the right side of the furnace
cabinet. The locating dimple is 1 7/8" measured from the front edge of the cabinet
in line with the knock out. To use the alternate combustion air location:
C
U
T
H
E
R
E
Vent/Flue Pipe Cuts
Figure 11
Insert flange. Cut 2 ½” long.
R 000142
F
Figure 10
Figure 12
Floo
r
Use alternate vent
& combination air locations
DOWN VENTING UPFLOW MODEL FURNACES ONLY
Base
ment
/ Cra
wlsp
ace
Condensate trapped
to prevent flue gas from escaping
and routed to field supplied
condensate disposal
Combustion Air Pipe
Vent Pipe
All piping and fittings must be joined per material manufacturer’s specifications
to prevent separation and flue gas leaks.
Both Pipes Terminated
Outside Structure
1/4” per foot min. slope
6’ MAX.
Field Supplied
Drain Tee on Vent Pipe