Install Instructions

15
free-draining to proper condensate disposal location. A loop
in the drain tube can serve as a trap.
NON-DIRECT VENT INSTALLATIONS
A minimum of one 90° elbow should be installed on the combus-
tion air intake “coupling” to guard against inadvertent block-
age.
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 and the “Alternate Vent/
Flue Location” figure. This option is not available with counter-
flow models.
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 the four screws from the vent pipe flange on
top the furnace.
2. Remove the internal elbow and vent pipe.
3. Cut 2 1/2" from the flange.
4. Remove plastic plug in line with the inducer outlet
5. Install cut end of the flanged section and connect to
inducer with rubber coupling supplied with furnace.
6. Install screws removed in step 1, securing the flange
to the cabinet.
B E SURE NOT TO DAMAGE INTERNAL WIRING OR OTHER COMPONENTS
WHEN REINSTALLING COUPLING AND SCREWS .
CAUTION
ALTERNATE COMBUSTION AIR PROVISION
(Upflow / Horizontal models only)
When using the alternate venting location, either in a hori-
zontal 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" mea-
sured from the front edge of the cabinet in line with the
knock out. To use the alternate combustion air location:
1. Remove screws and combustion air flange from
cabinet.
2. Insert cabinet plug in unused combustion air hole.
3. Drill a pilot hole at the cabinet dimple (size dictated
by knockout tool used).
4. Use a knockout tool to create a 3" diameter hole.
5. Install combustion air flange and secure with screws
removed in step one.
6. Install screws removed in step 1 securing flange to
cabinet.
NON-DIRECT VENT (SINGLE PIPE) PIPING
Non-direct vent installations require only a vent/flue pipe. The
vent pipe can be run horizontally with an exit through the side of
the building or run vertically with an exit through the roof of the
building. The vent can also be run through an existing unused
chimney; however, it must extend a minimum of 12 inches above
the top of the chimney. The space between the vent pipe and the
chimney must be closed with a weather-tight, corrosion-resis-
tant flashing.
Although non-direct vent installations do not require a combus-
tion air intake pipe, a minimum of one 90° elbow should be
attached to the furnace’s combustion air intake if: an upright
installation uses the standard intake location, or a horizontal
installation uses the alternate air intake location. This elbow will
guard against inadvertent blockage of the air intake.
VENT/FLUE PIPE LENGTHS AND DIAMETERS
NOTE: For installations at or above 7,000 feet altitude, use
3” venting. If either a 90 degree or 45 degree elbow is used
for termination, it must be pointed downward.
Refer to the table on the preceding page for applicable length,
elbows, and pipe diameter for construction of the vent/flue pipe
system of a non-direct vent installation. In addition to the vent/
flue pipe, a single 90° elbow should be secured to the combus-
tion air intake to prevent inadvertent blockage. The tee used in
the vent/flue termination must be included when determining
the number of elbows in the piping system.
1) Maximum allowable limits listed on individual lengths for
inlet and flue and NOT a combination.
2) Minimum requirement for each vent pipe is five (5) feet
in length and one elbow/tee.
3) Tee used in the vent/flue termination must be included
when determining the number of elbows in the piping sys-
tem
4) 2 1/2” or 3” diameter pipe can be used in place of 2”
diameter pipe.