The Catalytic Element - Vermont Castings Encore 2550 Installating And Operation Manual

2. Turn the pressure screw approximately one half turn
clockwise.
3. Tighten the lock nut. Keep the pressure screw from
turning as you tighten the nut. Re-test the damper.
Damper
Fig. 46 Adjusting the damper.
Tighten the Damper Handle as Needed
A handle on the left side of the stove controls the
ST642
damper. The handle attaches to the damper rod with a
set screw. Periodically check the set screw and tighten
Encore
as necessary.
damper adjust
How to Adjust the Door Latches
3/01
The Encore's front doors, as well as its ash pan door,
should close securely to prevent accidental open-
ing 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.
Over time, the gasket around the doors will compress
and the latch may need adjustment.
To adjust the handle on the front doors, open the
door on which the handle is mounted and rotate the
handle one full turn counterclockwise. Since this handle
is threaded into the front door, a complete revolution will
adjust it enough so the doors close securely.
To adjust the latch on the ash pan door, loosen the
small lock nut, rotate the striker screw a half-turn, and
re-tighten the small lock. Hold the striker screw to keep
it from turning as you tighten the lock nut. Make repeat-
ed small adjustments until the setting is right.

The Catalytic Element

Inspection and Cleaning
This wood heater contains a catalytic combustor, which
needs periodic inspection and replacement for proper
operation. In the United States it is against the law to
operate this wood heater in a manner inconsistent with
the operating instructions in this manual, or if the cata-
lytic element is deactivated or removed.
2000956
Lock Nut
Pressure Adjust-
ing Screw
ST642
Encore Woodburning Stove
Pawl
Small
Locking Nut
Large Lock-
ing Nut
Set Screw
Handle Stub
Fig. 47 Turn the door latch striker screw in or out to tighten or
loosen the door latch.
Under normal operating conditions, the catalytic com-
bustor should remain active for two to six years (de-
pending on the amount of wood burned). However, it
is important to monitor the combustor periodically to
ensure that it is functioning properly, as well as to deter-
mine when it needs to be replaced. A non-functioning
combustor will result in a loss of heating efficiency, and
an increase in creosote and emissions.
Inspect the combustor "in place" for fly ash accumula-
tion and physical damage three times per year. Do not
remove the combustor unless a more detailed inspec-
tion is warranted because of diminished performance
as outlined below.
The refractory package that houses the catalytic com-
bustor should be inspected annually for a buildup of fly
ash and cleaned if necessary. This may be done when
you examine the combustor.
When to Suspect a Combustor Problem
The best way to evaluate the performance of your
Encore's combustor is to observe the amount of smoke
leaving the chimney — both when the combustor has
achieved "light-off" and when it has not. Follow these
steps:
•
With a fire going and the combustor properly ac-
tivated, with the damper closed to route smoke through
it as described in the Operation Section, go outside and
observe the smoke leaving the chimney.
•
Then, open the stove damper and once again
check the smoke leaving the chimney. Significantly
more smoke should be seen when the stove damper is
open and exhaust does not pass through the combus-
tor. Be careful not to confuse smoke with steam from
wet wood, however. Steam dissipates in the air quickly;
smoke does not.
Striker Screw
ST531
ST531
Door Pawl
11/00
29