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7.
Boiler operation
Boiler can be operated by adult persons well familiarized with boiler
construction and this technical certificate.
Attention!
When boiler is fired with damp fuel (firewood or chips), formed
condensate combines with combustible gases resulting in acids, which
reduce service life of the boiler significantly. Besides that, this is
inefficient, because given efficiency rate cannot be reached, so much more
firewood is consumed.
It is prohibited to fire the boiler with fine wood waste, because
explosion risk or sparking from chimney is possible.
7.1. System preparation for heating
Before firing the boiler, it is necessary to verify that heating system is filled
with thermal water and de-aerated; it is recommended to fill with de-salted,
soft or at least rain water. If prepared soft water is used in the system, boiler
case will serve longer. It is also necessary to verify that the valves
disconnecting boiler from the system are open.
7.2. Boiler firing
(
see fig.1
)
When firing the boiler for the first time, also for long period of non-
operation (after summer season), it is necessary to heat up the heat-proof
concrete parts for the moisture contained inside, turning into steam, did not
disintegrate such parts. Put into the hearth, onto firegrate (
21
) small quantity
of fine firewood and, after opening firing valve (
6
) fire them. Fuel volume
must be such that it burned within 20 - 30 min. Repeat the process after 2
hours. Repeat this cycle 3 times.
Before firing the boiler, open firing valve (
6
), through door (
22
and
24
) put
on firegrate (
21
) fine-cut dry firewood or slivers and fire. Secondary air hole
valves (
14
) have to be closed. Valves are regulated when temperature in the
boiler reaches 60°C.
After the fuel combusts, firing charge burns out, fill loading chamber with
fuel (
how to fill: see below
), close firing valve (
6
).
Fine chopped firewood burns more efficiently and raise boiler power.
Load firewood into loading chamber loose, for while burning they could
fall down to the bottom of the chamber.
If coal is to be used, take 5 - 10 kg firewood and top with 10 cm coal. Coal
is to be poured layer by layer in a number of times, depending on fuel quality
and desirable heat volume.
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KALVIS - 2-30U, -2-40U 2012.02.06
Example
