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.
Make adjustment until flame size and activity suits your per- sonal preference, and then retighten screws on adjustment control.
Reattach the rear vent access plate (rear vent) OR the grille plate (top vent).
NOTE: In the Commonwealth of Massachusetts, the word damper shall be replaced with the words flue restrictor.
Damper Adjustment Plate
L. Shutter Adjustment
Rear Access Plate
Figure 8.27 TOP VENT INSTALLATIONS: Locate the damper adjustment control at the rear of the appliance behind the rear vent access plate.
Damper Adjustment Plate
Outer Cover Plate
Figure 8.28 REAR VENT INSTALLATIONS: Locate the damper adjustment control on the top of the appliance beneath the grille plate.
Make adjustment:
Let appliance warm up before adjusting.
Loosen screws 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.
OPEN CLOSE
Figure 8.29 The shutter is located on the underside of the appliance, on the right side. To adjust the shutter, loosen the wingnut. Retighten the wingnut after adjustment.
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 nut to lock in place.
September 1, 2008 |
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