„Installation and operation manual for fireplace insert”
KFDECOENG1.1562012
19
•
the temperature which particular parts of the body are exposed to is not
homogeneous, either: for different elements of the fireplace insert, the temperature
changes and may even reach 500
°C,
•
during operation, the fireplace insert is subjected interchangeably to cycles of heating
and cooling, related to lighting up and extinguishing during one day, as well as cycles
of intensive usage and complete rest during warm months of the year,
•
before beginning proper usage, a brand new device ought to undergo the process of
removing internal tensions and hardening of lacquer. This involves several cycles of
heating up to nominal operating temperature followed by cooling down to ambient
temperature,
•
during the initial phase of using the fireplace insert, a smell typical for heating up metal
and annealing of fresh lacquer will be sensible. During the stabilisation stage, the
lacquer should be subjected to the influence of the temperature of 250
°C, it should –
several times and for a prolonged time
– exceed the temperature of 350°C; only this
will let it achieve the appropriate durability and it will be bound with the metal surface.
This may take from 1 to 2 weeks, depending on intensity of using the fireplace.
The following precautions are to be considered during the lighting up stage:
1) make sure that the room where the fireplace insert is installed has sufficient
ventilation,
2) during initial lighting up cycles, do not overload the combustion chamber
(approximately half of the level indicated in the operating manual), maintain the fire for
at least 3-8 hours at wood combustion rate below the one specified in the operating
manual,
3) repeat the procedure at least 4-5 times, if possible,
4) gradually increase the quantity of fuel (in compliance with guidelines contained in the
operating manual) and maintain the device in operation for as long as possible
– avoid
short cycles of lighting up and extinguishing the fireplace insert, at least during the
initial stage,
5) during the first cycles of lighting up, do not place any objects on the device, in
particular on its lacquered surfaces. Moreover, do not touch lacquered surfaces during
operation of the device,
6)
after the device is “
annealed
”, it may be used like a vehicle engine, avoiding sudden
heating up of the insert which occurs as a result of excessive loading with fuel.
2.3 Adjustment of combustion air supply
Apart from a safe view of fire, a modern fireplace insert ensures clean and effective
combustion of wood. The supply of combustion air in the bottom part of the furnace only does
not guarantee complete combustion of wood. Gases produced as a result of incomplete
combustion are taken off into the chimney, making the chimney dirty and causing heat
losses. To enable complete combustion in the fireplace furnace, the deficiency of air in the
upper part of the furnace, above the surface of fuel must be supplemented, while the supply
from the bottom of the furnace is reduced. Thanks to this modern solution applied in your
fireplace insert, combustion of not only the solid parts of fuel (wood), but also of gases
produced during the primary stage of combustion can be achieved. This solution is referred
to as “secondary combustion” and it is applied in your fireplace insert, guaranteeing higher
efficiency of the device (more heat from the same quantity of wood) and reduced quantity of
contaminations emitted into the atmospheric air we breathe. The structure of your furnace is
designed to cause alteration of air circulation as a result of changing the position of one
