2.9 Residual risks
WARNING
When the main switch is switched off in heating mode:
The boiler is not controlled. Any resulting boiler malfunctions can cause serious
injury and damage.
Take the following precautions:
❒ Allow the fire to burn out completely and let the boiler cool
➥ ID fan switches off when "Off" status has been reached
(flue gas temperature < 80°C, boiler temperature < 65°C)
❒ Only then is it safe to switch off the main switch
WARNING
When touching hot surfaces:
Severe burns are possible on hot surfaces and the flue gas pipe!
When work is carried out on the boiler:
❒ Shut down the boiler in a controlled way (operating status "Off") and allow it to
cool down
❒ Protective gloves must generally be worn for work on the boiler, and it should
only be operated using the handles provided
❒ Insulate the flue pipes or simply avoid touching them during operation.
WARNING
When inspecting and cleaning the boiler with the main switch on:
Serious injuries possible due to boiler/individual components starting up
automatically (induced draught)!
Before inspection and cleaning work in/on the boiler:
❒ Allow the fuel in the boiler to burn off
❒ Allow boiler to cool off and switch off main switch
WARNING
If non-permitted fuel types are used:
Non-standard fuels can cause serious faults in combustion (e.g. spontaneous
combustion of carbonisation gases / flash fires) which can lead to serious
accidents!
Take the following precautions:
❒ Only use fuels specified in the "Permitted fuels" section of these operating
instructions.
Safety
2
Residual risks
Operating Instructions S3 Turbo | B0610717_en 19
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