Hearth and Home Technologies Direct Vent Room Heater 839-1460 - Manual (Page 37)

September 1, 2008 Page 37 Quadra-Fire · Sapphire · 250-7233H
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.
NOTE: In the Commonwealth of Massachusetts, the word
damper shall be replaced with the words flue restrictor.
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.
K. Damper Adjustment
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.
Figure 8.27 TOP VENT INSTALLATIONS: Locate the damper
adjustment control at the rear of the appliance behind the
rear vent access plate.
L. Shutter Adjustment
FOR TOP OR REAR VENT INSTALLATIONS
Damper Adjustment Plate
Rear 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 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).
OPEN CLOSE