Venting
A 4−inch diameter flue transition is
| Mounting Screws Location |
Flue Transition | Mounting Screws |
|
FIGURE 15
UPFLOW POSITION | ||
Top Vent Discharge | ||
Flue | Vent Pipe | |
| ||
Transition | Collector Box | |
Pressure | ||
| ||
Switch |
| |
Make−Up |
| |
Box |
| |
AIR | FLOW |
FIGURE 16
IMPORTANT
The unit will not vent properly with the flue transition pointed down in the 6 o’clock position.
The combustion air inducer may be rotated clock- wise or counterclockwise by 90° to allow for top or side vent discharge in all applications. When the unit is installed, the flue 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. See figures 17 through 21.
1 − Remove the four mounting screws (figure 15) which secure the combustion air inducer / pressure switch assembly to the orifice plate. Lift the assembly and ro- tate it 90 degrees clockwise or counterclockwise to ei- ther the 3 o’clock position or to 9 o’clock position. Re− secure with four screws. Gasket should be left in place.
2 − Use tin snips to cut preferred opening on the cabinet for repositioning the flue outlet. Use the cut−out piece as a cover plate to patch unused opening on cabinet.
UPFLOW POSITION
Left Side Vent Discharge
Cover Plate | Collector Box | |
Pressure | ||
| ||
Switch | Make−Up | |
| Box | |
Vent Pipe |
|
Flue
Transition
AIR FLOW
DGas supply piping must be brought into the unit from the right side in order to accommodate the flue pipe.
DCut Combustion air inducer tubing from 9" to 8" to avoid inter- ference with inducer motor
DRemove 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.
DRe−secure make−up box wires: Either pull excess wires through the blower compartment and secure using supplied wire tie, or coil excess wire and secure to the gas manifold.
FIGURE 17
UPFLOW POSITION
Right Side Vent Discharge
Collector Box | Cover Plate | Flue Transition |
| Vent Pipe | |
|
| |
Pressure |
|
|
Switch |
|
|
Make−Up
Box
AIR FLOW
DCut combustion air inducer tubing from 9" to 5" to avoid interference with inducer motor
FIGURE 18
Page 13