Vermont Castings 968 Installation And Operating Manual page 28

Vermont Castings Defiant
Check the Operation of the
Primary Air Shutter
The primary air shutter is at the back of the ash
drop and is visible from the back of the stove. (Fig. 33)
The shutter must open and close freely when you
move the thermostat lever. If it doesn't, remove any
obstruction. If you need assistance, consult your local
Vermont Castings Authorized Dealer.
Do not change the adjustment of the cable in an
attempt to gain increased firing. The air shutter controls
how much air can enter the stove, but chimney draft is
the force that pulls air into the stove. If changing the
thermostat handle position does not lead to changes in
the fire's intensity within four or five minutes, it's
probably due to weak chimney draft (in the case of a
weak fire you can't increase) or an air leak in the stove
(in the case of a fire you can't decrease).
IA N T
D E F
ST548
Fig. 33 The primary air shutter must move freely.
Adjust the Damper as Needed
The tension on the Defiant's damper is adjustable to
compensate for compression of the gasket that seals
the damper to the upper fireback. To adjust the
damper:
1. Remove the griddle. Loosen the lock nut at the
center of the damper. (Fig. 34)
2. Turn the pressure screw approximately one half turn
clockwise with an Allen wrench provided with your
stove.
3. Tighten the lock nut. Prevent the pressure screw
from turning as you tighten the nut. Re-test the
damper.
28
Fig. 34 Adjust the damper with the Allen wrench.
A handle on the left side of the stove controls the
damper. The handle attaches to the damper rod with a
set screw. Periodically check the set screw and tighten
as necessary.
prevent accidental opening and to keep air from
leaking into the stove. On adequately adjusted doors,
the handles should resist slightly as they are turned to
the closed position and the doors themselves should
be drawn slightly toward the stove.
press and the latches may need adjustment.
To adjust the latches, loosen the small lock nut, rotate
the striker screw a half-turn, and re-tighten the small
lock nut. (Fig. 35) Your stove kit includes an Allen
wrench for latch adjustments. Hold the striker screw to
keep it from turning as you tighten the lock nut. Make
repeated small adjustments until the setting is right.
Primary Air Shutter
Fig. 35 Turn the door latch striker screw in or out to tighten of
loosen the screw.
Pressure
Adjusting
Screw
Allen
Wrench
Tighten the Damper Handle as Needed
How to Adjust the Door Latches
The Defiant's doors should close securely to
Over time, the gasket around the doors will com-
Pawl
Small
Locking Nut
Large
Locking
Nut
Set Screw
Handle Stub
Lock Nut
Damper
ST554
Striker Screw
ST531