WAFE 350, User Manual

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22 | WAFE 350 Operation
Special cases
Anti-freeze protection
Thanks to its unique flap system, WAFE 350 can operate down to -30 °C temperatures without
the need to pre-heat the incoming outside air. If the outside temperature goes below this level,
the fan turns off and the ventilation stops in order to protect the unit. The unit resumes its
operation once the temperature returns within the -30 to +45 °C limit.
Operation of the unit along with the fireplace
WAFE 350 energy recovery ventilation unit is pressure-neutral: the volume of fresh air brought
in is equal to the volume of waste air ejected from the building. In contrast, fireplace systems
are pressure-negative. To avoid the formation of negative pressure inside your home when
operating the unit along with the fireplace, the
Fireplace ventilation function must be activated
during the whole time the fireplace is active. You can do so through my.wafe.eu web applica-
tion (requires user registration, see WAFE 350 Installation / Installation and handover ).
 Do not forget to turn the function off once the fireplace is extinguished!
In case a heat or energy recovery ventilation unit like WAFE 350 is operated simultaneously
with the fireplace (stove, kiln, etc.), all applicable regulations and standards must be complied
with. Separate fresh air intake for the fireplace must be provided. We also recommend having
the ability to close the fireplace to minimise the possibility of negative pressure build up in the
combustion chamber or of fumes from the fireplace leaking into the interior.