Vermont Castings Defiant FlexBurn Homeowner's Installation And Operating Manual page 30

Defiant ® FlexBurn ™ 1975 Non-Catalytic / Catalytic Woodburning Stove
adjust the Damper as Needed
The tension on the Defiant's damper is adjustable to com-
pensate 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. 43)
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.
Pressure Ad-
justing Screw
Allen
Wrench
Fig. 43 Adjust the damper with the Allen wrench.
Tighten the Damper handle as Needed
A handle on the left side of the stove controls the damper.
The handle attaches to the damper rod with a set screw. Pe-
riodically check the set screw and tighten as necessary.
how to adjust the Door latches
The front door of the stove should close securely to prevent
accidental opening and should close tightly to prevent air
from leaking into the fire chamber. The door handle will be
positioned vertically when the door is closed.
Over a period of time, the gasket around the door will
compress and the latch may need adjustment. To adjust
the handle, follow this procedure:
1. Remove and retain the lock nut with a 9/16" wrench.
(Fig. 44)
2. Loosen the set screw with a 1/8" Allen wrench.
3. Rotate the pawl 180°. Replace the lock nut. Tighten the
set screw.
4. Additional adjustment can be made by removing the flat
washer. Or any combination of washer removal and/or
pawl rotation.
Test the door seal. Close the door on a dollar bill and at-
tempt to pull it free. If the bill is freed with little resistance,
the gasket isn't snug enough at that spot. Continue to make
small adjustments until the setting is right.
If additional adjusting of the latch does not enable the door
to seal sufficiently in one area, try "adjusting" the gasket in
that area. Pack more cement or a smaller diameter gasket
into the channel beneath the gasket so the main gasket
30
Lock Nut
Damper
ST554
Damper adjustment
11/00
Roller
Lock Nut
Set Screw
Fig. 44 Rotate pawl and/or remove flat washer to adjust latch.
is raised and makes contact with the door frame. If this
procedure doesn't solve the problem, replace the gasket.
Instructions for gasket replacement are given later in this
section.
Replace the Stove gaskets as Needed
ST554
Your Defiant uses fiberglass rope gaskets to make a tight
seal between some parts. With use, particularly on moving
parts, gaskets can become brittle and compressed and can
begin to lose their effectiveness. These will need periodic
replacement.
The sizes of replaceable gasket are listed below, along
with their applications.
gasket Diameter... ...and the parts it Seals
5/16"
(wire reinforced gasket)
5/16"
7/16
the doors to each other.
3/8"
panel
3/16"
If you need to change a gasket, first obtain an appropri-
ate replacement from your Vermont Castings' Authorized
Dealer.
Wait until the fire is out and the stove has cooled. Be sure
to follow the standard safety procedure for working with
dusty materials: wear safety goggles and a dust mask.
The procedure for replacing gaskets is the same, regard-
less of the gasket location. Follow these steps:
1. Remove the existing gasket by grasping an end and
pulling firmly. (Fig. 45)
2. Use a wire brush or the tip of a screwdriver to clean
the channel of any remaining cement or bits of gasket.
Remove stubborn deposits of cement with a cold chisel if
necessary. (Fig. 45)
Shoulder Screw
Flat Washer
Handle Stub
ST1154
door pawl
The griddle to the stove top
The damper to the upper fireback
the front doors to the stove front; and
The ash door to the front of the bottom
The outer glass panes to the door
ST1154
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