Venting
A 4−inch diameter flue transition is
Mounting Screws Location |
mounting screws |
mounting screw |
FIGURE 14
UPFlow Position
UPFLOW POSITION | ||
Top Vent Discharge | ||
vent pipe | ||
flue | collector box | |
transition | ||
| ||
pressure |
| |
switch |
| |
make−up |
| |
box |
| |
AIR | FLOW | |
FIGURE 15
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 and see figures 15 through 21.
1 − Remove the four mounting screws (figure 14) which secure the combustion air inducer / pressure switch assembly to the orifice plate. Lift and rotate the assem- bly 90 degrees clockwise or counter clockwise to either the 3 o’clock position or to 9 o’clock position and re−se- cure 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 |
|
|
vent pipe |
| make−up |
|
| box |
flue
transition
AIR 
FLOW
SGas supply piping must be brought into the unit from the right side in order to accommodate the flue pipe.
SRemove 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.
SRe−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.
FIGURE 16
UPFLOW POSITION
Right Side Vent Discharge
| cover plate |
collector box | flue transition |
vent pipe
pressure 
switch 
make−up
box
AIR 
FLOW
SPressure 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.
FIGURE 17
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