The fan is the component that injects fresh air in to the combustion chamber, allowing the gas to be burnt correctly. It also clears the combusted gas after the combustion process is complete. The boiler has safety features in place to make sure no gas can be passed through to the main burner if the fan is not operational .
There are two kinds of heat exchanger that can be present, the primary heat exchanger and the secondary heat exchanger. The primary is present in almost all boilers and it allows the heat to be transferred from the burner to the water within the system. The secondary heat exchanger is only present in combination boilers and allows the heat to be transferred between one closed system and another. The Primary Heat exchanger is sometimes referred to as the 'main' heat exchanger or heat engine. The secondary heat exchanger can also be known as the plate heat exchanger or the domestic hot water heat exchanger .
The pump is located after the primary heat exchanger within the heating appliance and allows the heated water to be circulated within the closed heating system. In combination boilers , the pump is usually found before the diverter valve to allow circulation through the DHW and central heating systems .
Usually, there are two different types electrode, Ignition electrodes and flame sensing electrodes ,The Ignition / Spark Electrode is responsible for causing the spark that starts the burner. The flame sensing electrodes are responsible for ensuring there is a flame present in the burner. This is an important safety device that makes sure the boiler isn't still supplying gas without a flame .
The fan is the component that injects fresh air in to the combustion chamber, allowing the gas to be burnt correctly. It also clears the combusted gas after the combustion process is complete. The boiler has safety features in place to make sure no gas can be passed through to the main burner if the fan is not operational .
There are two kinds of heat exchanger that can be present, the primary heat exchanger and the secondary heat exchanger. The primary is present in almost all boilers and it allows the heat to be transferred from the burner to the water within the system. The secondary heat exchanger is only present in combination boilers and allows the heat to be transferred between one closed system and another. The Primary Heat exchanger is sometimes referred to as the 'main' heat exchanger or heat engine. The secondary heat exchanger can also be known as the plate heat exchanger or the domestic hot water heat exchanger .
The pump is located after the primary heat exchanger within the heating appliance and allows the heated water to be circulated within the closed heating system. In combination boilers , the pump is usually found before the diverter valve to allow circulation through the DHW and central heating systems .
Usually, there are two different types electrode, Ignition electrodes and flame sensing electrodes ,The Ignition / Spark Electrode is responsible for causing the spark that starts the burner. The flame sensing electrodes are responsible for ensuring there is a flame present in the burner. This is an important safety device that makes sure the boiler isn't still supplying gas without a flame .