24
Installation instructions
5.6 - STARTING
IGNITION
Make sure that the checks listed in paragraph
5.5 have been performed.
Place, in the center of the grate, thin paper
(newspapers etc.) and a little thin and dry
wood, cross disposed; avoid large pieces in the shape of
squares
Open the rear by-pass
Light the paper and close the upper door. Wait for the fire to
start and produce the embers (5 to 10 minutes).
After that, looking through the secondary air inlet on the
upper door, the flame will be noticed .
Important: The by-pass should be used only at the start
and during subsequent loading,
During the operation, the
by-pass should always be tightly closed
1st LOADING
When the bed of embers is formed on the grate, it is
possible to proceed to the loading of the wood
Open slowly the upper door.
Spread the embers uniformly on the grate, using the poker.
The wood must be of the following length:
a) 33 cm (+ 1 cm - 4 cm) for the model FOKOLUS 20
b) 50 cm (+ 1 cm - 4 cm) for models FOKOLUS 30
c) 70 cm (+ 1 cm - 4 cm) for the model FOKOLUS 40
These dimensions must be strictly observed.
Since for a good combustion it is essential that there is an
uniform falling down of the firewood, it is necessary to
make sure that the length of the introduced wood logs, their
form and the way of loading don’t prevent the regular
descent of the fuel.
The wood logs must be placed longitudinally and
horizontally. No log has to be placed slanting or athwart.
We recommend not to
use small wood pieces for fuel
charges, because they have an excessive inflammation
and can cause an unacceptable increase of the output and
of the smoke temperature in the chimney.
Caution: After wood loading close the upper door and
remember to close the by-pass.
SUBSEQUENT LOADINGS
Before making a new loading of wood, consume, as much
as possible, the previous one.
The new loading will be done when the bed of embers, on
the grate, will be reduced to a thickness of about 5 cm.
Open slowly the upper loading door.
Use only wood logs having a length as stated in the
previous paragraph.
Place the new loading of wood as above described.
USEFUL SUGGESTIONS AND LOADING ERRORS
- Too long logs do not fall down regularly and can cause
“bridges”.
- Too short logs cause not regular air passages, with
consequent reduction of output and efficiency.
- In case the quality of the wood causes “bridges” it could
be necessary to cut the wood logs in two parts, as stated in
the paragraph FIRST LOADING.
- Open the upper door always slowly, in order to avoid
blowbacks and smoke formations.
5.7 - COMBUSTION AIR ADJUSTMENT
ADJUSTMENT OF PRIMARY AND SECONDARY AIR
The boiler FOKOLUS is equipped with primary air (pos 5,
fig. 1) and secondary air adjustment (pos 4,Fig. 1). The
primary air adjustment is done automatically through the
thermostatic valve; the secondary air, however, done
through the port located on the upper loading door, must be
done by the user, tightening or loosening the adjustment
screw.
At the first start it is necessary to adjust the
primary and the secondary air and bearing in
mind that the primary air determines the boiler
output, and therefore the amount of wood that
is burned, and the secondary air completes the
combustion.
The optimal setting of the FOKOLUS operation
is obtained when boiler and chimney are in
“warm conditions”.
Once the thermostatic valve of the primary air adjustment
has been mounted according to the instructions of the
manufacturer, it is forbidden to open, manually, the primary
air adjustment door to activate the combustion after wood
loading, because it could be the cause of excessive output,
with an abnormal increase of the smoke temperature to the
chimney.
fig. 19