Air-ventilated fireplaces

DANGER

• Ensure sufficient supply air intake when operating with air-ventilated fireplaces. Observe the maximum permitted pressure difference per residential unit. This model always requires the approval of a regional master chimney sweep.
• Ventilation units may only be installed in rooms, apartments or housing units of a comparable size, in which air-ventilated fireplaces are installed if:
  • parallel operation of air-ventilated fireplaces for liquid or gaseous fuels and the air-extracting equipment can be prevented via safety devices, or
  • the extraction of exhaust gas from the air-ventilated fireplaces is monitored by special safety devices. In the case of air-ventilated fireplaces for liquid or gaseous fuels, the fireplace or the ventilation system must be switched off if the safety device is triggered.
• In the case of air-ventilated fireplaces for solid fuels, the ventilation system must be switched off if the safety device is triggered.

• In order for ventilation systems (equipped with central ventilation units with heat recovery) to be operated as intended, it must be possible to close off any combustion air ducts or exhaust gas ducts from air-ventilated fireplaces while the fireplaces are not being used.
• For exhaust gas ducts of fireplaces for solid fuels, the shut-off device may only be operated by hand. It must be possible to identify the position of the shut-off device from the setting of the operating handle. This is considered to be fulfilled if a soot blocking device is used.
• Ventilation units must not be installed if there are air-ventilated fireplaces in the housing unit that are connected to exhaust gas systems, which themselves have multiple connections. → Danger to life due to transfer of waste gases (carbon monoxide) to other residential units.

Explanations of safety devices

• The safety device is checked for electronic and functional safety using the safety objectives of DVGWVP 121.

Fire protection requirements

• In terms of the fire protection installation requirements for setting up the ventilation system, note the state regulations, especially the official guideline on fire protection requirements of ventilation systems in its most recent version.