117
Filling combustion
chamber
• The current combustion chamber temperature is lower
than the preset ignition temperature.
• This operating status is maintained until the preset
time for filling the combustion chamber has elapsed.
Ignition • The preset ignition temperature has not been
exceeded.
• The ignition fan is running and the combustion fan will
start after the preset delay.
• This operating status is maintained until the preset
time for ignition has elapsed.
Heating up • The feed rate and the speed of the combustion fan are
increased step-by-step.
• This operating status is maintained until the preset
time for heating up or the preset temperature in the
combustion chamber have been reached.
Control • The heating system runs automatically and is
controlled as configured.
• This operating status is maintained until a change is
made to a different status.
Burning out • The preset boiler temperature has been reached.
• The boiler has been switched off.
• This operating status is maintained until the boiler
temperature exceeds the demanded preset
temperature.
Frost protection • The mains switch is turned on.
• Frost protection and the protective programmes are
active.
• This operating status is maintained until a change is
made to a different status.
Summer operation,
only hot water
• Together with the HDG Hydronic heating circuit
control, it is possible to implement summer operation.
• In this mode, frost protection and the protective
functions are active.
• Only hot water is heated.
Boiler switched off • The boiler mains switch has been turned off.
• All functions are disabled.
Operating status
Operating
mode
Description
Table 6/1 - Operational statuses (continuation)
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