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take up to 36 hours to cool. Woodstock Soapstone Company offers a black metal ash holder with a
hinged lid that closes tightly. Four sturdy legs keep it off the floor, and the wooden handle is not only
decorative, it will also protect your hands.
Never shovel ashes into a combustible container like a cardboard box or a plastic bucket. Do not use
a vacuum cleaner to remove ashes unless it is specifically designed for woodstove ash removal. Do
not ever leave a container of hot ashes on a wood floor or porch.
The Surface Thermometer and Probe Thermometer
We recommend placing the thermometer 8”-10”above the flue collar on single wall stove pipe if the
stove is vented out the top. If the stove is rear vented, the surface thermometer should be placed on the
cast iron cover plate toward the back of the stove. If you are reading the single
wall stove pipe temperature, the interior flue exhaust temperature is about twice
as hot. Since the 22 gauge sheet metal pipe is more reactive (faster heat transfer)
than the stove top, you will find you can engage the combustor sooner. We
recommend engaging your catalytic combustor once the pipe thermometer
reaches 300°-350° F. Stove top temperatures should reach approximately 250°F.
Once the combustor is engaged, you should see the stove surface temperature
rise and the pipe temperature drop, indicating catalytic combustor activity. From
a cold start it may take 30-45 minutes to get to the stove up to temperature. If you
are reloading a hot stove, wait approximately 10-15 minutes before engaging the
combustor.
The thermometer is not a precise instrument – it will not tell you the exact
temperature inside the firebox or in the flue. If reading the surface temperature
the thermometer will not register changes in temperature quickly due to the
thickness and heat retention of soapstone. We supply the thermometer to give you some idea of what is
going on inside the stove, and to provide a guide for operation.
STOVE TOP READING OPERATION
over 300º. . . . . . . . . . . . . . . . . . . . . OK to engage the combustor
400-600º. . . . . . . . . . . . . . . . . . . . . . Normal operating temperature
600-700º. . . . . . . . . . . . . . . . . . . . . . High burn range
over 700º. . . . . . . . . . . . . . . . . . . . . DO NOT burn in this range
The probe thermometer can be inserted into the port beside the flue collar in the rear of the stove. The
probe thermometer wll measure the temperature immediately downstream of the catalytic combustor.
The sensing end of the probe extends to within 1 inch of the face of the catalyst. The probe is calibrated
from room temperature to 1700 degrees F. The catalyst can be engaged as soon as the temperature on
this probe exceeds 500 degrees F, or as soon as the temperature on the pipe thermometer exceeds 250
degrees (see above). The best operating range for the catalyst is from 500 - 1400 degrees F. When the
temperature on the probe thermometer exceeds 1400
o
F, we recommend closing the damper to prevent
excessive heat from occuring
Overfiring
The cast iron parts in your Woodstock Soapstone Stove are of the finest
quality. Our cast iron parts have been made in the same foundry since the
mid 1980’s, and the foundry itself has been in business for over one
hundred years. Each cast iron part is inspected by our stove builders
before it becomes part of a stove. However, cast iron is not indestructible.
Experts have shown that cast iron begins to oxidize (reddish or whitish
discoloration) at 1400º F. Burning a stove frequently at excessive
temperatures is known as overfiring. When the surface temperature is
consistently over 700º F, the stove has reached 1400º F inside. Operation
with temperatures in this range can lead to cast iron warping, becoming
brittle, and eventually deteriorating completely. It can shorten the useful
life of the catalytic combustor.
18
Place the surface thermometer
8” above the stove top for top
vent, or on the cover plate for
rear vent
DO NOT OVERFIRE!
ATTEMPTS TO ACHIEVE
HEAT OUTPUT RATES
THAT EXCEED STOVE
DESIGN SPECIFICATIONS
CAN RESULT IN PERMA-
NENT DAMAGE TO THE
STOVE AND TO THE
CATALYTIC COMBUSTOR.
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