Heatilator • RBV4236/RBV4842 • 4048-210 • Rev S • 6/10
34
K. Air Shutter Setting
Air shutter settings should be adjusted by a qualified
installer at the time of installation. The air shutter is set at
the factory for minimum vertical vent run. Adjust air shut-
ter for longer vertical runs. See Figure 14.19.
NOTICE:
If sooting occurs, provide more air by opening
the air shutter.
• The logs and burner must be removed to access the air
shutter. Refer to Section 14.H.
• Remove the two screws attaching the front burner
support to the firebox bottom. See Figure 14.20.
Figure 14.20 Remove Screws Attaching Front Burner Support
Figure 14.22 Side Burner Assembly to Left
Figure 14.21 Remove Screws Attaching Back Burner Support
Figure 14.23 Adjust Air Shutter
• Slide the burner assembly to the left and remove from
the appliance. See Figure 14.22.
• Remove the two screws attaching the back burner
support to the burner pan. See Figure 14.21.
• The shutter can be adjusted as shown in Figure 14.23
• Closed position - natural gas
• Open position - propane
