Care Of The Catalytic Combustion System - Vermont Castings Intrepid II Installation & Operating Manual

How to Adjust the Door Latch:
Over time, the gasketing around the doors will compress, and
the latch may need adjustment. To adjust the latch, loosen
the small locking nut, extend the striker screw one turn while
keeping the striker screw from turning. (Figure 44) Keep
making adjustments a little at a time until the setting is right.
Pawl
Small Locking Nut
Large Locking Nut
Set Screw
Figure 44 - Turn the door latch striker screw in or out to tighten or
loosen the door latch.
The front doors of the stove should close securely and tightly,
when the handle is in the closed position. When the latch is
properly adjusted there should be a slight resistance as the
doors are moved to the completely closed position.
Tighten the Damper Handle as Needed:
The damper handle is attached to the damper rod with a set
screw bearing against a flat spot on the rod. Check the set
screw periodically for tightness; tighten as needed.
Damper Adjustment:
When the stove damper is closed, the pressure of the rod
against the damper plate assures a good seal between the
damper and the damper housing. Adjustment may be needed
after a period of time to retain adequate pressure.
To make this adjustment, start with the damper in the closed
and locked position. (Figure 45) Loosen the 7/16" locking
nut in the center of the damper. Use a 1/8" Allen wrench to
turn the Allen screw a full turn clockwise. Test the damper for
snugness, and continue adjusting the Allen screw as needed.
Tighten the 7/16" locking nut when the damper operates
smoothly but firmly.
30
Striker Screw
Handle Stub
ST531
Door Pawl
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Vermont Castings • Intrepid II Installation & Operating Manual_R48 • 11/17
Thermostat Cover
D-plate
Damper Actuator Rod
Locking Nut
Figure 45 - Tighten the damper adjustment screw for a snug seal.
The Catalytic Combustion System
Inspection and Cleaning:
This wood heater includes 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 catalytic element is deactivated or
removed.
Under normal operating conditions the catalytic element
should remain active for two to six years (depending 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 determine when it needs to be replaced.
A probe thermostat, passing through the back of the stove into
the catalytic combustion chamber, automatically regulates
the catalytic combustion air supply. Deterioration of the probe
may result in decreased catalytic combustor performance.
A poorly-functioning catalytic combustion system will result
in a loss of heating efficiency, and an increase in creosote
and emissions.
The combustor should be visually inspected in place for
fly ash accumulation and physical damage three times per
year. Do not remove the combustor unless a more detailed
inspection is warranted because of diminished performance
as outlined below, or to inspect the probe thermostat.
The refractory package that houses the catalytic combustor
should be inspected annually for a buildup of flay ash, and
cleaned if necessary. This may be done during examination
of the combustor.
The probe thermostat should be inspected annually, or more
often if decreased catalytic combustion performance is not
due to a defective combustor.
Handle
Damper
Allen Head
Adjustment Screw
ST532
damper adj
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