Page 13
Venting
A 4-inch diameter ue transition is factory-installed on
the combustion air inducer outlet of all models. Figure 15
shows the combustion air inducer as shipped from the fac-
tory.
Mounting Screws Location
Mounting Screws
FIGURE 14
UPFLOW POSITION
Top Vent Discharge
FLOW
AIR
Pressure
Switch
Flue
Transition
Vent Pipe
Collector Box
Make -Up
Box
FIGURE 15
IMPORTANT
The unit will not vent properly with the ue transition
pointed down in the 6 o’clock position. The combustion
air inducer may be rotated clockwise or counterclockwise
by 90° to allow for top or side vent discharge in all
applications. When the unit is installed, the ue transition
must be in the 9 o’clock, 12 o’clock or 3 o’clock position.
If necessary reposition the combustion air inducer, pres-
sure switch and or make up box as needed per the follow-
ing steps and see gures 16 through 21.
1 - Remove the four mounting screws which secure the
combustion air inducer / pressure switch assembly
to the orice plate. See gure 14. Lift and rotate
the assembly 90 degrees clockwise or counter
clockwise to either the 3 o’clock position or to 9
o’clock position and re-secure with four screws.
Gasket should be left in place.
2 - 2 - Use tin snips to cut preferred opening
on the cabinet for repositioning the ue
outlet. Use the cut out piece
Left Side Vent Discharge
Gas supply piping must be brought into the unit from the right
side in order to accommodate the flue pipe.
Remove make-up box assembly (2 screws) and cut wire tie to
free make-up box wires. Re-install make-up box on other side
of cabinet.
Re-secure make-up box wires, either pulling excess wires
through the blower compartment and securing with supplied
wire tie, or coil excess wire and secure to the gas manifold.
FLOW
AIR
xoB rotcelloCetalP revoC
Pressure
Switch
Vent Pipe
Flue
Transition
Make-Up
Box
FIGURE 16
UPFLOW POSITION
Right Side Vent Discharge
Pressure switch tubing may be too long. Cut to
fit , then re-attach to barbed fitting on pressure
switch. Tubing must not be allowed to sag.
FLOW
AIR
Collector
Box
Cover Plate
Flue Transition
Vent Pipe
Pressure
Switch
Make-Up
Box
FIGURE 17
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