GC9C96 Service Manual
SYSTEM OPERATION
7
T
R
1. Remove screws from the vent ange.
2. Remove the internal elbow and vent pipe
3. Cut 2 1/2” from the ange .
4. Remove cabinet plug adjacent to inducer outlet and install
an original cabinet vent hole.
5. Install RF000142 coupling on inducer outlet.
6. Install anged vent section removed in step 2 and secure
with clamps.
7. Secure ange to cabinet using screws removed in step1.
In horizontal applications the condensate drain trap is secured
to the furnace side panel, suspending it below the furnace.
A minimum clearance of 5.5” below the furnace must be
provided for the drain trap. Additionally, the appropriate
downward piping slope must be maintained from the drain
trap to the drain location. Refer to Condensate Drain Trap and
Lines section in this manual or the installation instructions for
further details. If the drain trap and drain line will be exposed
to temperatures near or below freezing, adequate measures
must be taken to prevent condensate from freezing.
The use of insulation and/or heat tape is recommended.
Failure to provide proper condensate drainage can result in
property damage.
Leveling ensures proper condensate drainage from the heat
exchanger and induced draft blower. For proper ue pipe
drainage, the furnace must be level lengthwise from end to
end. The furnace should also be level from back to front or
have a slight tilt with the access doors downhill (approximately
3/4”) from the back panel. The slight tilt allows the heat
exchanger condensate, generated in the recuperator coil, to
ow forward to the recuperator coil front cover.
AIR
DISCHARGE
Bottom
Return
Duct
Connection
Side
Return
Duct
Connection
Side
Return
Duct
Connection
Bottom
Return
Duct
Connection
Bottom
Return
Duct
AIR
DISCHARGE
The furnaces have provisions allowing for electrical and
gas line connections through either side panel. In horizontal
applications the connections can be made either through the
“top” or “bottom” of the furnace.
A drain pan must be provided if the furnace is installed above
a conditioned area. The drain pan must cover the entire area
under the furnace (and air conditioning coil if applicable).
If the drain trap and drain line will be exposed to temperatures
near or below freezing, adequate measures must be taken
to prevent condensate from freezing. The use of
insulation and/or heat tape is recommended. Failure to
provide proper condensate drainage can result in property
damage.