Goodman GMEC96 Service Instructions Manual page 17

SYSTEM OPERATION
Insert flange. Cut 2 ½" long.
R 000142 F
Figure 9
Figure 10
1. Remove screws from the vent flange.
2. Remove the internal elbow and vent pipe
3. Cut 2 1/2" from the 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 and se-
cure with clamps.
7. Secure flange to cabinet using screws removed in step1.
Drain Trap and Lines
In horizontal applications the condensate drain trap is se-
cured 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 appro-
priate 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. NOTE: The use of insulation and/or heat tape
is recommended. Failure to provide proper condensate drain-
age can result in property damage.
Leveling
Leveling ensures proper condensate drainage from the heat
exchanger and induced draft blower. For proper flue 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 (approxi-
mately 3/4") from the back panel. The slight tilt allows the
heat exchanger condensate, generated in the recuperator
coil, to flow forward to the recuperator coil front cover.
AIR
DISCHARGE
Side
Return
Duct
Connection
Connection
Bottom
Return
Duct
Connection
UPFLOW
UPRIGHT
UPFLOW HORIZONTAL
LEFT AIR DISCHARGE
Bottom
Return
Duct
UPFLOW HORIZONTAL
RIGHT AIR DISCHARGE
90% Furnace Recommended Installation Positions
Alternate Electrical and Gas Line Connections
The furnaces have provisions allowing for electrical and gas
line connections through either side panel. In horizontal ap-
plications the connections can be made either through the
"top" or "bottom" of the furnace.
Drain Pan
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).
Side
Return
Duct
Counterflow
Bottom
Return
Duct
Connection
AIR
DISCHARGE
17