HDG F20 - Glossary

1 Notes on this manual – Glossary
7
1.2 Glossary
Term Explanation
Actuator This is a component which carries out a certain function in the
heating system, e.g. flue gas fan.
Central module Pre-fabricated plug board for electrical components.
Display Display on the control unit HDG controls.
Flue gas fan Creates a vacuum inside the boiler and provides the boiler with air
for combustion.
HDG controls Boiler and heating system controller.
HDG F20-50 Boiler for burning untreated wood.
HDG F20-50 Hybrid Boiler for burning untreated wood. The HDG F Hybrid is also
intended for combined used with a HDG K Hybrid pellt unit
Lambda sensor This is an electrical component which monitors residual oxygen
levels in the flue gas.
Safety temperature limiter An automatic device that interrupts and locks the supply of energy
and combustion air when the maximum permissible boiler
temperature is reached. The energy supply or combustion air
supply can only be re-enabled after the boiler temperature has
fallen below a preset limit and has been reset by hand or by means
of a tool.
Sensor Monitors certain parameters (e.g. temperature) and forwards them
to the control system for analysis.
Thermal safety device Safety device that allows cold water to flow through the safety
heat exchanger if the boiler becomes too hot.
Table 1/1 - Glossary