Safety General information
3 Safety
3.1 General information
Operation only by trained personnel
The product may be operated by trained adults only.
Training may be provided by the heating technician or
our customer service. Please read the associated doc-
umentation carefully in order to avoid errors during
operation and maintenance.
Persons who lack experience and knowledge as well
as children may not operate, clean, or maintain the
product.
Keep fire extinguishers in a clearly visible location
In Austria, the minimum requirement is an
ABC powder extinguisher with 6 kg. An AB foam extin-
guisher with 9 litres, which produces less damage
when used, is preferable. The fire extinguisher should
be kept outside the boiler room, visible and easily
accessible. Even if country-specific regulations do not
prescribe a fire extinguisher, we still recommend that
you keep one in-house.
Fig. 3-1: Fire extinguisher
Storage of ash
The ash must be kept in non-flammable containers
with covers for cooling. Never put hot ash into the
waste bin!
3.2 Safety devices
Pump safety run, automatic heat dissipation at
overtemperature
If the boiler temperature exceeds 87 °C (factory
setting) for any reason, the pump safety run will start.
All heating pumps and boiler pumps that are
connected to the boiler control system are switched on
to dissipate heat from the boiler.
This action prevents the boiler temperature from rising
further and triggering further safety devices such as
the safety temperature limiter and the thermal relief
valve.
Heat dissipation is limited by the selected
maximum flow temperature in the heating circuits
and the target hot water temperature.
Boiler overheating
If a boiler temperature of 90°C is reached, the control
system switches the draught fan off and a warning
message appears on the display.
Reasons for a boiler temperature increase include:
• too much wood in the fuel chamber
• heating circuits unexpectedly switched off
• heating pump failed
• heating line inadvertently shut off
Once the boiler temperature has fallen below
86°C, heating resumes automatically.
During such emergency shutdowns the wood
continues to emit gas and the unburned wood
gas causes tar deposits in the boiler and chimney.
Install thermal emergency cooling valve against
overheating
The safety heat exchanger built into the boiler must be
connected by the heating technician to the house's
cold water supply via a thermal relief valve to protect
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