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Operating statuses of the boiler in automatic mode
1) Firing up – With insufficient heating water temperature the circulation pump is switched off. The fan slowly increases
its power until the heating water temperature exceeds the condensation temperature. Then it passes
into the operation stage
2) Operation – The boiler power is modulated in such a way as to ensure the boiler output water temperature is
as close to the required temperature as possible. The circulation pump is on and hot water is supplied to the heating
system.
3) Inhibition – With the heating water temperature decreasing under the condensation temperature, the boiler switches
off the circulation pump and fan. The controller will wait for the operator to stoke some more fuel material.
After the boiler door is opened, firewood stoked and the boiler door closed the controller goes back to the firing up
stage.
Inhibition
For all configurations, a remote spatial thermostat with a switching contact may be connected to the controller.
(Not heated up – contact closed, heated up – contact open). Once the boiler heats the given room up and switches the spatial
thermostat open, the boiler will pass to inhibition shutting down the circulation pump.
Caution! The thermostat constant must be separated, potential free. The thermostat must not switch other voltages, and under no
circumstances must it switch 230VAC network voltage. Otherwise, controller damage is imminent.
8.5 Operation adjustment
Adjusting the operating draught of the boiler
The boiler has been adjusted to the specified chimney draught at the production plant (depending on the type of the boiler,
20-25 Pa – see the Technical parameters of boilers). The size and mass of the primary air flap shutting off air supply to the boiler
thus regulating the combustion corresponds to this.
In the event the chimney exhibits a higher than specified draught, a greater consumption of primary air and, by inference, a more
rapid fuel material loss will occur causing the boiler efficiency to drop. The boiler is also more difficult to control and the standby
time in “hot reserve” is reduced. The problem may be solved by installing a draught controller between the boiler and the chimney.
The draught controller may be ordered as special boiler accessories.
No other ways of adjusting the boiler are admissible and where necessary, the above may only be carried out
by an authorised professional.
In the event that the chimney does not reach the specified draught, the boiler may not achieve the required power either, which
may either impair the combustion process or even lead to the boiler releasing the smoke into the space (especially whilst stoking).
The problem needs be addressed by adjusting the chimney following agreement with a professional chimney company.
Adjusting the stoking and ash pan door
The rough adjustment of the door is completed at the production plant. Any changes that may develop in transport must be
removed by the boiler operator prior to commissioning the same. Similarly, adjusting the door with the boiler in operation (such as
in the event of combustion smoke penetrating into the room with the door closed or due to the wearing or the need f
or replacement of the sealing cord) belong to the fundamental maintenance interventions on the boiler carried out
by the operators.
The actual adjustment shall be completed after releasing the M12 nuts with a pipe wrench to be inserted in the holes in the side
encasing (on the hinge side). That will release the sliding hinge of the door.
Slightly open the door and press on it at the hinge locations to reduce the gap between the sealing cord and the boiler frame.
An appropriately adjusted door must have the same hinge gap over the entire length of the sealing edge; once the door is closed,
the sealing edge must abut across the entire surface of the frame and it must be possible to freely place the hook of the screwed
cap into the grip at the door frame.
After this adjustment has been done, re-tighten the M12 nuts of the sliding hinge with a pipe wrench.
Notice:
Never retighten the door with force; otherwise the screwed cap could be damaged and the sealing cord cut through!
If possible, position the boiler in such a way as to ensure easy access to the holes in the side plates.
