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Radijator Inženjering d.o.o, 36000 Kraljevo, Živojina Lazića - Solunca br.6, Srbija
tel. +381 36 399 140, fax. +381 36 399 150, http://www.radijator.rs
e-mail: [email protected]
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The purpose of this safety section is to continuously measure the underpressure of the
flue gases in the flue channel area where it is connected, and to transmit this information
to to automation system. If the value of the underpressure is above or below the value
that is predefined in automation, there is the termination in operation of the entire unit on
the automation display there is a warning that a mistake occurred in the operation.
WARNING
: The disturbances in under pressure of flue gases can occur due to
clogging of the chimney, a large dirt of flue channels in the pellet Boiler, poor sealing of doors or
glass-ceramic, the lids of the openings for flue channels etc.
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These conditions may lead to poor drainage of the combustion products, especially of
carbon monoxide, which can, in extreme cases, lead to serious health problems and even
choking of users.
Thermostats in the automation of the boiler (figure 7):
Figure 7. Thermostats in the automation of the boiler
Within the automation itself that leads the combustion process and influences the work of two
cycles of heating, there are two termostatats. Both are of similar construction as the thermostat
shown in
figure 7
and they have safety functions as limiters of the temperature of water in the
boiler. Because of the safety role in the functioning of the boiler, both thermostats have the
independent probes for measuring of water temperature.
The first thermostat is the so-called „working thermostat” work and it serves to limit the
temperature to a level the user wants. Another thermostat is the „safety thermostat” because it
stops the opration of the fan which favors the flame, and adds a new energy. Safety temperature
is limited to 95 degrees Celsius.
It is very important to connect the pump for heating through automation for safety
reasons.
When the temperature of water in the boiler reaches the critical value of 95
degrees the fan stops working, but the pump is necessarily switched on to exchange the heat
of water through radiators.
