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re sensor (solid state, PT1000), which regulates the combustion process and re-
duces the stack loss (blowing air adjustment). The adapter cube allows for quick
and simple exchange, when necessary (see Fig. 4).
NOTICE:
For correct operation of the regulator controlling the combustion process –
operation of the automatic fuel feeder – we encourage you to periodically clean
the sensor surface from dust/soot.
Clean out door, furnace door and ash-box door are located on the front wall of
the boiler. The furnace door enables the access to periodic cleaning of the boiler
and burner.
Front clean out door and top clean out (located under the cover) enables easy
access to cleaning of heat exchanger cartridges and gas turbulator. Side clean
out and ash-box door are used to remove dust settling in the flue gas duct.
Due to an overpressure in the whole inner space of the boiler, it is provided
with fire doors and inspection hatches with circumferential sealing (ceramic rope,
gaskets) and screwed connection, ensuring for its tight closing. Furthermore, it
is also provided with adjustment systems for hinges, and for closing systems for
doors and a fuel tank cover.
Non-flammable insulating materials were installed to reduce heat losses and
secure against excessive increase in a temperature of external boiler surfaces.
The heat exchanger surface is insulated from the environment with external
cladding of powder-coated steel sheets, under which a thermal insulation layer
of asbestos-free non-flammable mineral wool is installed. The insulating mate-
rial tightly fills space between the exchanger and the boiler casing (external,
powder painted insulating sheet). The boiler door and the top clean out have
a multi-layer construction made of stainless steel and insulating material which
restricts heat loss (temperature of the external surface of the boiler on a safe
level). And additional insulating partition made of stainless steel and insulating
material in the furnace door was implemented, as well as a stainless steel par-
tition in the clean out door. The boiler has an additional layer on front door in
the form of an opening external cover, protecting from an accidental contact
with surfaces susceptible to excessive heat. Door, clean out hatch, and flue gas
damper handles are made of non-flammable components significantly reducing
Figure 4
The flue gas temperature sensor mounted in the flue pipe
