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CARE & FIRING INSTRUCTIONS
Keddy's K700 has been tested by a certified testing institute. It has extremely good environ-
mental values and a useful efficiency exceeding 80%. For the stove to work optimally, it is of
key importance that you follow the care and firing instructions below. Non-compliance will
invalidate the warranty.
FUEL
The K700 must be fired with wood. Most types of
firewood can be used. The most suitable are birch,
beech, ash, and elm, but conifers and oak can also
be used if they are mixed 50/50 with another type of
hardwood. Oak contains acids, which may affect the
stove and chimney during combustion.
The firewood must be dry, i.e. with a maximum
moisture content of 20%. If the firewood is moist, an
unnecessary amount of energy is used boiling the
water away before it starts burning normally. This
also forms large amounts of soot and tar, which are
deposited on the walls of the hearth and chimney,
which in turn significantly increases the risk of a
chimney fire.
Moist firewood also results in poor combustion, which
leads to greater smoke generation with sooty glass
and deterioration of the local environment as a con
-
sequence.
To be certain you will have dry wood when the heat
-
ing season begins, it must be cut in the winter. The
wood is then stored in a ventilated place under a roof
and left to dry during the spring and summer. Before
using the wood, you should keep it indoors for a cou
-
ple of days so there is time for the surface moisture
to evaporate.
WARNING! It is absolutely forbidden to fire the stove
with painted, glued (e.g. Hardboard or chipboard) or
pressure-impregnated wood. It is also forbidden to
burn plastic and other waste in the insert. The com
-
bustion of such fuels and substances releases acids
and heavy metals, which are very harmful for both
people and the environment.
BEFORE FIRING - WHEN THE STOVE IS NEW
During the first week, firing can be started carefully.
Start with one to two fires during the first couple of
days.
A particular smell will occur during the first firings in
the stove. This is the cast iron's paint and rust proof
-
ing hardening. Ventilate as required and ensure that
there is good air exchange. The smell will normally
disappear after a few fires.
FIRING
When you optimise firing manually, you should meas
-
ure the amount of burned wood per hour. The stove is
not intended for an output exceeding 9 kWh, i.e. never
exceed the maximum amount of recommended wood
per hour. This not only impairs the efficiency, there is
also a risk of overheating the insert and chimney and
an output of excess smoke. Suitable firewood size
and quantity for the K700 are:
Kindling:
Length
approx. 25-35 cm
Diameter
approx. 2-5 cm
Split logs:
Length
approx. 25-35 cm
Diameter
approx. 6-10 cm
Amount
approx. 1.5 kg per load
Max. amount
approx. 2.7 kg per hour
NOTE! Every load should burn down completely
before you add new firewood. In which case, the
insert works at its best and you avoid the incon
-
venience of possible blow back.
The damper is closed completely when it is turned to
the left and is open to the maximum when it is turned
to the right (see the illustration below).
The amount of air needed for burning for example 2
kg of wood in one hour depends on several param
-
eters. The length of, and the draught in, your chimney,
how hot the stove and chimney are, i.e. how long you
have fired. The basic principle, however, is that the
stove has to burn calmly and harmoniously and, for a
hot stove, the damper control does not usually exceed
30-40% in order to achieve this at an output of 5-7
kW. (The damper control stands at 50% in the illustra
-
tion above.)
As a rule of thumb, if you want to reduce the output, a
load of 1.5 kg firewood should burn for about 60 min
-
utes. The stove will then provide approx. 4 kW.
