K. Damper Adjustment
FOR TOP OR REAR VENT INSTALLATIONS
See Vent Graph for Recommendations on page 11 before you begin your adjustment. If your installation falls within the range of the gray shaded area of graph, it may be necessary to make an adjustment to the vertical damper to improve the flame appearance in your appliance.
L. Shutter Adjustment
OPENCLOSE
Figure 8.32 TOP VENT INSTALLATIONS:
Locate the damper adjustment on the intake plenum. Access through the appliance front. Adjustor is centered at the top of the appliance.
Make adjustment:
Let appliance warm up before adjusting. Loosen screw using a Phillips head screwdriver.
Pivot the vertical damper adjustor in 1/4 in. (6mm) incre- ments while observing the flame activity.
Turning clockwise to open damper = less flame height and more blue in flame color.
Turning counterclockwise to close damper = increased flame height and more yellow in flame color.
Make adjustment until flame size and activity suits your per- sonal preference, and then retighten screws on adjustment control.
Figure 8.33 REAR VENT INSTALLATIONS: The rear vent damper is located in the back of the firebox behind the rear brick panel. It is recommended to make adjustment prior to installation.
Remove front/glass/ logs and brick if installed. Loosen screws and slide up to suggested settings. Reinstall accordingly... Tighten screws.
Figure 8.34 The shutter is located on the underside of the appliance, on the right side. To adjust the shutter, loosen the wingnut..
Moving the shutter bolt to the right closes the shutter. Moving the shutter bolt to the left, will open the shutter. Opening the shutter causes flames to become shorter and blue. Closing the shutter creates taller orange/yellow flames.
NOTE: Do not close so much as to cause a sooty flame. Improper adjustment can cause sooting in the firebox and/ or on the outside of a house with a horizontal termination.
After adjustment, tighten wingnut to lock in place.
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