Service and installation manual - C.H. Water Boiler
© All rights reserved - Galmet Sp. z o.o. Sp. K.
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6. Conditions of safe operation / 7. System of protections
The condition of safe operation of the boiler is:
- use of the boiler acc.to its designation and maintaining it in the relevant condition (regular cleaning),
- use of fuel recommended by the manufacturer,
- application or the required protections,
- the boiler room should be kept in the relevant order (it is not recommended to store in the boiler room any items not related with operation or maintenance
of the boiler).
Customer service must be called after starting up the boiler in order to:
- Regulate the boiler and measure the exhaust emissions.
- Instruct the user about the boiler's usage by a competent person.
7. System of protections
7.1. Independent safety temperature breakers (STB)
STB sensor is an electro-mechanical device, which operates on the principle of connections broken in the moment of reaching the temperature limit of 95°C.
When the STB is activated, it will turn off the voltage from the fan and the feeder. Re-closing of the connections by themselves is impossible even when the
heat level is lowered. Re-connection must be performed by the user resetting the sensor. It is done using the push button located on the boiler body under
the protective cap (drawing 2, pos. 50).
7.2. Boiler temperature sensor
The boiler sensors monitors temperature of the boiler, the current temperature is displayed by the controller. In case when the boiler set temperature is
exceeded the controller breaks operation of the fuel feeder and fan. The maximum temperature of the boiler temperature sensor is 92°C. An alarm message
will be displayed simultaneously with a signaling sound. After lowering of the temperature to the safe level the controller will restart operation of the feeder
and fan.
7.3. Feeder temperature sensor
The next level of boiler protection is the feeder thermal sensor. In case of exceeding of the border value (45°C) the controller increases the fuel dose fed to the
combustion box until the temperature drops below 45°C. If the temperature reaches 85°C, the feeder will operate continuously for 10 minutes, furthermore,
the controller will display a fire warning in the feeder and emit a beeping sound. The message of the necessity of renewed lighting up the boiler and checking
the air flow settings will be displayed (they should be diminished).
7.4. Fuel bin cover opening sensor
The next level of boiler protection is the fuel bin cover opening sensor. At the moment of opening the cover, power supply to the feeder and fan is interrupted,
it prevents smoke leaving the bin during re-loading the fuel. After the cover is closed power supply is returned.