Alarko ACK2, Operation Manual

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Boiler Control Panel Device Functions :
1. Main switch : Energize or shut off the panel.
2. Safety limit thermostat: If boiler water temperature is out of control (boiler
thermostat are not functioning, electric wire fault, etc) and reaches 100 °C (+/- 5
°C) it will stop the burner immediately. It is manual reset type high temperature
safety device. It will not reset automatically before reset it find the reason for high
temperature.
3. Boiler thermostat : It regulates the desired boiler water temperature. Set it to
system need temperature.
4. 2
nd
Stage thermostat : It regulates the burner stages. Set it 6 to 10 C below
the boiler thermostat value. When the boiler water temperature reached to set
value it turns down the burner to 1
st stage.
5. Temperature indicator and pressure gauge: They indicate the boiler water
temperature and pressure.
6. Weather compensated control device : It is a multifunctional device but
the main aim is regulating the desired boiler water temperature automatically
according to atmospheric conditions with the help of motorized 3 way valve (setting
must be performed by a qualified service at commissioning).