Viadrus Hercules P 1, Manual, Operation And Installation

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4.3 Regulatory and signaling elements
4.3.1 Regulatory and signaling elements – Hefaistos P1 T
Combustion air is brought to boiler by means of a throttle valve (choking valve), which is placed on the
smoke adaptor. By means of the air exchanger the combustion air will be distributed to the nozzle as the
primary air and into lining of combustion chamber as the secondary combustion air and both are controlled
by draft controller.
Thermomanometer – is used for measuring the water temperature and pressure in boiler.
Flue gases thermoregulator (range 0 – 300 °C) – serves for switching off the ventilator after the fuel has
burnt out. When making a fire in boiler we set the flue gases thermoregulator to „minimum“– 0 °C. In the
stage of flaring we set the flue gases thermoregulator to operating temperature, which is to be set by user. It
is necessary to find the right value so that the ventilator will switch off after the fuel has burnt out. If the flue
gases temperature drops below the set value, the thermo-regulator will switch off the exhaust ventilator If we
want to make the ventilator work again, we have to set the flue gases thermoregulator to lower temperature.
Operating thermoregulator – controls the run of ventilator depending on the outlet water temperature.
Safety thermoregulator (irreversible) – serves as a protection against boiler overheating. It is set to 95 °C.
In case of a fault it is necessary- after the boiler has cooled down- to deactivate the safety thermoregulator
manually. Due to the activation of safety thermoregulator the exhaust ventilator is switched off and it is
signalled by a orange pilot light on the control box panel.
Thermoregulator of the pump– is used for setting the temperature when the pump is switched on (we
recommend setting to 50 – 55 °C).
Draught controller– serves for the control of throttle valve (choking valve) which is installed on the smoke
adaptor of the boiler.
1 – Termomanometer
2 – Signalling the safety thermoregulator
3 – Signalling the run ov ventilator
4 – Circuit breaker 5 – Operating thermoregulator
6 – Flue gases thermoregulator
7 – Safety thermoregulator
8 – Thermoregulator of the pump
Fig. no. 13a) Control box – Hefaistos P1 T
4.3.2 Regulatory and signaling elements – Hefaistos P1 E
Combustion air is brought to boiler by means of a throttle valve (choking valve), which is placed on the
smoke adaptor. By means of the air exchanger the combustion air will be distributed to the nozzle as the
primary air and into lining of combustion chamber as the secondary combustion air and both are controlled
by draft controller.
Thermomanometer – is used for measuring the water temperature and pressure in boiler.
Safety thermoregulator (irreversible) – serves as a protection against boiler overheating. It is set to 95 °C.
In case of a fault it is necessary- after the boiler has cooled down- to deactivate the safety thermoregulator
manually. Due to the activation of safety thermoregulator the exhaust ventilator is switched off and it is
signalled by a orange pilot light on the control box panel.
Controller ST 81 processes data from sensors of output water temperature, hot water and flue gases
temperature. According to the data in this way the modulated exhaust ventilator, central heating pumps and
HW (hot water) pumps are controlled.
Limit switch of stoking door every time you open the stoking door (opening the limit switch) the exhaust
ventilator is activated at its maximum power and thus prevents the escape of flue gases into the space
where the boiler is located. After closing the stoking door (closing the limit switch) the fan power returns into
automatic mode.