K. Damper Adjustment
(For top or rear vent installations)
2. 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.
1. Top Vent Installations:
CLOSED
OPEN
Figure 8.22 Locate the damper adjustment on the intake plenum, accessing through the appliance front. Adjustor is centered at the top of the appliance.
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 fl ame activity.
Turning clockwise to open damper = less fl ame height and more blue in fl ame color.
Turning counterclockwise to close damper = increased fl ame height and more yellow in fl ame color.
Make adjustment until fl ame size and activity suits your per- sonal preference, and then retighten screws on adjustment control.
Figure 8.23 The rear vent damper is located in the back of the fi rebox. It is recommended to make adjustment prior to installation.
Remove the front, glass, logs, and brick (if installed).
Loosen screws and slide up to suggested settings (See vent graph on page 11).
Tighten screws.
Reinstall front, glass, logs and brick (if applicable).
NOTE: In the Commonwealth of Massachusetts, the word damper shall be replaced with the words flue restrictor.
L. Shutter Adjustment
OPENCLOSE
Figure 8.24 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.
Page 34 | July 29, 2008 |
