lower pressure – into the area of fire box. Thus the air intake into the fire chamber happens. This constant air inflow
is the draught.
The stove won't be operating effectively if there is no draught of the definite value.
Provided the excessive draught the considerable air flow will be entering the fire chamber and this will lead to
the stove overheating. Fire hazard may appear.
With the insufficient draught the insufficient amount of air for fuel proper and complete combustion will be
entering the fire chamber and this may lead to smoke generation in the room. The creosote generation increases
upon the formation of excessive smoke in the stove pipe and that may ignite creating the fire hazard in a house.
Creosote (from French
créosote)
— is colourless (sometimes yellowish or yellow-green), inflammable, hardly
soluble in water oily liquid with strong smell and pungent taste extracted from wood and coal tar. This is the
mixture of phenols mainly guaiacol and cresols. Soluble in alcohol and ether. Poisonous.
Creosote will inevitably be generated in your stove and stove pipe. To reduce the speed of its generating it is
necessary to:
Use only dried billets that were dried during the period for not less than one year.
Use hardwood of broadleaf woods that is more compact (more heavy) and combust with the higher
temperature.
Before the use of the stove check and amend all that can influence the draught. Reducing or increasing of
draught may influence the draught by set of different factors, some of them may change in the course of time.
Factors influencing the draught:
Atmospheric pressure – may act from outside of a room, from inside and from both side by turns. Weather
conditions to which the high pressure conforms (clear and cold days) usually create the perfect conditions for
combustion.
Negative pressure outside the heated room – is created with the help of ventilation facilities such as:
ventilation inside the bath room, draft hood, equipment for clothes drying, boilers with forced draught. Upon the
negative pressure the air flow in the stove pipe will go backwards at that «negative draught» or «backdraught» is
created.
Negative pressure can be neutralized by opening the door or window in the room with the stove.
The stove pipe temperature – the draught in the warmed up stove pipe is better than in the cold one. The cold
stove pipe quickly cools off hot gases going upwards and this will prevent their further going upwards. Combustion
of the first fuel charge will be enough for the stove pipe warming.
Stone stove pipes and stove pipes with section larger than the heating device are warmed up for a considerably
longer period of time.
The chimney stack shall have minimal number of elbows. The straight pipe is preferable. The use of more than
two piping may lead to the draught loss and possible smoke generation.
The manufacturer recommends to use modular thin-walled chimney stacks made of high-alloy, corrosion-
resisting steel of «Termofor» trademark with the diameter of 115 mm. They are effective, durable and required thee
minimum expenses for assembling and during operating.
For reliable fastening of the units together it is necessary to use «collar-strainer»; the use of self-drilling screws
is allowed if necessary.
In case of installation of thick-walled metal, ceramic, asbestos-cement or other chimney stack of greater weight
it is necessary to unload the stove from its weight.
The optimal draught for operation of stoves of «Termofor» trademark equals to 12±2 Pa.
ATTENTION! The manufacturer shall not be responsible for the influence of external factors on the
reduction of natural draught in the stove pipe.
ATTENTION! It is prohibited to use chimney stacks with galvanic coating.
ATTENTION! Do not use pipes from different manufacturers in the stove pipe.
ATTENTION! To avoid the smoke blowing into the heated room all the places of chimney stack units
connection against each other and the stove it is necessary to compact with high-temperature sealant (not
less than 1000°Ñ) providing the air-tightness of the pipe junctions.
ATTENTION! The junction of stove pipe units in overlaps and fire block is prohibited.
ATTENTION! The section of chimney stack located in the zone of sub-zero temperatures shall be obligatory
heat insulated by non-combustible material, withstanding temperatures not less than +400 °Ñ.
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