HearthStone Quality Home Heating Products Inc
Stowe Model #8321
02044-1
14
R
ESTRICTION
P
LATE
The restriction plate is used to control the
draft of the heater. Controlling the draft also
changes the aesthetics of the flame. The
restriction plate has eight settings, one (1)
being the lowest and eight (8) being the
highest. For a fast moving flame with lots
of action, use a low setting. For a slow, lazy
flame, a high setting should be used. See
Figure 9 for instructions on how to adjust
the restriction plate settings.
R
ESTRICTION
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LATE
P
OSITION
A vent restriction plate is available for the
appliance to adjust the flow rate of exhaust
gases. This insures proper flames for the
wide variety of vent configurations, and
efficiency. The restriction plate consists of a
rotating shutter below the starter section of
pipe and an adjustment plate with index
holes used to hold the shutter in a fixed
position. Depending on the vent
configuration, you may be required to adjust
the restriction plate position. Refer to page
17-18 for positioning of the restriction plate.
A
DJUSTMENT TO
R
ESTRICTION
P
LATE
Remove the log set before adjusting the
restriction plate by following the log set
removal instructions on page 24. Make sure
the unit is cool before touching any part of
the firebox and log set. Remove the exhaust
baffle by removing the one screw in the
center of the baffle (refer to Figure 9). The
baffle will come out once the screw is
removed.
Be careful not to drop the baffle
on the pan burner
. Once the baffle is set
aside, check the restriction plate screw
location. There are eight locations that the
restriction plate can be positioned. (Refer to
Venting Configuration – Figures 10 – 15 for
recommended restriction plate positions)
(Refer to Figure 7 for proper adjustment
plate index location) ‘A’ in Figure 9 shows
the locating screw that determines the
position of the plate.
NOTE: These positions are based on lab
results and can have some variance.
Remove the screw and position the
restriction plate in the desired location.
Fasten the screw into the proper hole and
tighten. Reinstall the exhaust baffle by
setting the back edge of the baffle into the
baffle clip attached to the back wall of the
firebox. Then push the baffle against the
heat exchanger and reinstall the screw.
Reinstall the log set and ember strip as
described in the log set installation
procedure on page 27.
Figure 8: Baffle Removal
Figure 9: Restriction Plate Adjustments
