„Installation and operation manual for fireplace insert”
KFDECOENG1.1562012
22
2.4.5 Summer break in using the fireplace
In case of high humidity of the room where the fireplace insert is installed, place a humidity
absorbent (“silica gel”) in the insert.
2.5 Fireplace fuel
Irrespective of the class, type or make of the fireplace insert, the quality of fuel used is crucial
to proper operation, efficiency and durability of the device. The only fuel allowed in closed
fireplaces is the wood of deciduous trees. To enable economical usage guaranteeing your
satisfaction with the fireplace, wood ought to be seasoned for at least 18 months in the open
air, e.g. under an umbrella roof, sawn and split. This allows appropriate wood humidity (20%),
required for proper operation of the fireplace. It ought to be emphasised that
1 m³ of wood
with the humidity of 20% contains app. 60 l of water, whereas the same quantity of wood two
months after cutting down contains as much as 350 litres of water. If the latter is used in the
fireplace, it will result in quick soiling of the glass pane, corrosion of the insert, erosion of the
chimney and, obviously, the house will not be heated. Recent research (including ecological
research) indicates high importance of wood as ecological renewable fuel. First of all,
combustion of wood does not increase the greenhouse effect or the so-called ozone hole,
because wood
– whether burned in the fireplace or decomposed naturally – emits into the
atmosphere the same quantity of carbon dioxide (CO
2
). Combustion residues do not contain
sulphur, chlorine or other harmful chemical substances. Exhaust gases contain only water
and carbon dioxide, whereas ash is an excellent natural fertiliser because it contains all
mineral salts needed by plants.
The furnace should contain no more than 2-3 chunks with the length of app.
33-50 cm
(
and
diameter of 10-15 cm. Prohibited fuels include coal, briquettes, waste, remainders of bark or
laminated panels, humid wood, processed wood (e.g. lacquered wood) and plastics. If such
materials are used for combustion, the guarantee expires. Paper or cardboard may only be
used for lighting up.
Burning of waste is prohibited as this is hazardous to the device and to human health.
2.6 Instructions for users
!
Prohibited kinds of fuel: coal and coal derivatives, briquettes, straw, woodwork
chippings and wood under 10% humidity, plastic objects and rubbish. Moreover, it
is prohibited to use chemical products and all kinds of inflammable liquids for
combustion and facilitating the lighting up.
!
Never use water to extinguish fire in the fireplace.
!
Do not touch the device during operation because of the risk of burning.
!
Wear the protective gloves attached to the fireplace insert.
!
Clean the furnace regularly to avoid excessive accumulation of ash.
!
Do not leave the insert with door open or ajar unattended while the fuel is burning
inside.
!
Parts such as the grate, deflector and gaskets are not covered by the guarantee and
ought to be replaced during technical inspections, depending on wear.
!
Technical inspections ought to be performed once a year by Authorised KFD Fitters.
!
Lack of the deflector may cause excessive negative pressure which causes too
violent combustion, excessive consumption of wood and, respectively, overheating
of the device.
