Vermont Casting 2080 사용자 설명서

20

In any chemical reaction, including the combustion 
process, there are certain conditions which must be 
met before the reaction can take place. For example, a 
reaction may require a certain temperature, or a certain 
concentration of the reactants (the combustion gases 
and oxygen), or a certain amount of time. Catalysts, 
though not changed themselves during the reaction, 
have the ability to act at a molecular level to change 
these requirements. In the secondary combustion 
chamber of the WinterWarm Small Insert, the catalyst 
reduces the temperature at which secondary combus-
tion can start from the 1000° - 1200°F (540° - 650°C) 
range to the 500° - 600°F (260° - 315°C) range, in-
creasing efficiency, and reducing creosote and emis-
sions.
The catalytic reaction, though advantageous, does 
have some limitations of its own. Primary among these 
is the reactants (the gases) come into close physical 
contact with the catalyst itself.
To ensure the necessary contact, the catalytic ele-
ment in your WinterWarm Small Insert is composed 
of a ceramic base in the shape of a honeycomb. On 
each of the honeycomb’s many surfaces a coating of 
the catalyst (usually a noble metal such as platinum or 
palladium) is applied. The large surface area exposed 
in this configuration ensures that the combustion gases 
have the greatest opportunity to come in contact with 
the catalyst.
Loss of catalytic activity will be apparent in several 
ways. First you may notice an increase in fuel con-
sumption. Second, there will be a visible increase in the 
rate at which creosote builds up in your chimney con-
nector system. You may also notice a heavy discharge 
of smoke from the chimney.  There are a number of 
catalytic problems which can cause loss of activity:

While the honeycomb pattern ensures good contact, it 
also increases the resistance to flow of the combustion 
gases, and, because of the many surfaces, provides 
more places for creosote and fly ash to deposit.  It is 
important to follow the operating instructions in order 
to minimize these deposits, and to periodically inspect 
your catalyst for signs of blockage.

While the catalyst itself does not enter into the combus-
tion process, it is possible for certain elements, such 
as lead and sulfur, to attach to the active sites on the 
surface of the honeycomb.  Though the catalyst is still 
there, it is covered, or masked, by the contaminant, and 
cannot function.  To avoid this situation, it is important 
not to burn anything in your WinterWarm Small Insert 
that is a source of these contaminants.  Particularly 
avoid painted or treated wood, coal, household trash, 
colored papers, metal foils, or plastics.  Chemical chim-
ney cleaners may also contain harmful elements.  The 
safest approach is to burn only untreated, natural wood.

The catalytic element is not designed for exposure to 
direct flame.  If you continually over-fire your Winter-
Warm Small Insert the chemistry of the catalyst coating 
may be altered, inhibiting the combustion process.
Thermal degradation of the ceramic base may also oc-
cur, causing the element to disintegrate.  Stay within the 
recommended guidelines of the Operation section.

If the element is mishandled, damage may occur.  
Always treat the element carefully.  Remember the 
catalyst is made of a ceramic material; treat it as you 
would fine china.  Hairline cracks will not affect the 
performance of the catalyst, as long as the steel sleeve 
holds the element in the proper position.

Peeling of the surface coat may occur if the catalytic 
element is frequently subjected to excessive tempera-
tures.  Follow the operating instructions carefully to 
avoid this type of damage.
Every CFM Corporation product is equipped with a 
Corning “Long-Life”

®

 “Honeycomb”

®

.   If for any reason 

you must ship your catalytic element, remember its 
fragile nature.  Place the element in a plastic bag, and 
package it with a generous amount of shock absorbing 
material.