GCSS96 Installation Manual

14
counterflow rubber coupling allows service removal of air intake
piping internal to the furnace blower compartment. The com-
bustion air intake pipe can also be secured directly to the coun-
terflow unit air intake pipe coupling.
VENT-DRAIN
Figure 8B
COMBUSTION AIR INTAKE OPTIONS: The RF000142 coupling
(Figure 8B) can be secured directly to the furnace intake
coupling if condensation is a concern. If the RF000142 is
used on the combustion air inlet, it must be installed with
the arrow pointing up. It should be noted, the combustion
air will actually be moving in a direction opposite of the
arrow on the RF000142 coupling. It must have a field sup-
plied, trapped drain tube free-draining to proper conden-
sate disposal location. A loop in the drain tube can serve as
a trap. The unused RF000142 drain fitting should be capped.
A tee installed in the intake pipe is also an acceptable method
of catching condensation. It must have a field supplied,
trapped drain tube or pipe, free-draining to proper conden-
sate disposal location. A loop in the drain tube can serve as
a trap.
Insert flange. Cut 2 ½” long.
R 000142F
Figure 9
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.
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
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 coun-
terflow 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 flange to
cabinet.
B E SURE NOT TO DAMAGE INTERNAL WIRING OR OTHER COMPONENTS
WHEN REINSTALLING COUPLING AND SCREWS .
CAUTION
Figure 10