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OPERATION
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Pure controller | Installation instructions
3.4 Setting heat recovery / ventilation mode
The heat recovery and ventilation operating modes can be changed by moving the left-hand rock-
er switch back and forth 2 times.
The starting position of the rocker switches is not relevant here.
Heat recovery mode
In this operating mode, the reversible fans of the
ventilation units operated in pairs change their
direction of rotation every 70 seconds. The inte-
grated thermal accumulator charges itself with the
heat energy from the room's warm air as it flows
to the outside (extract air). When the fan changes
direction, it releases the stored heat energy into the
incoming outdoor air (supply air).
Select "Heat recovery" as the default operating
mode. During the heating periods, the outdoor
temperature is cooler than the temperature of the
air inside. The outdoor air flowing in is pre-warmed
by being fed over the ceramic thermal accumulator
before making its way indoors. On summer days,
this is also recommended. The higher outdoor
temperature compared to the indoor temperature
means that the supply of heat is significantly re
-
duced during ventilation.
Ventilation mode
In this mode, the reversible fans do not change
their direction of rotation. This means that no heat
recovery takes place.
Select "Ventilation" to cool the room on summer
nights, or to quickly remove stale or humid indoor
air.
►
Switch the left-hand rocker switch back and forth
twice from its current position.
All switching operations must be carried out
within around 2 seconds (switch back and
forth quickly).
The operating mode is set / changed.
The display LED lights up.
►
Select the ventilation level at which the ventilation
unit is to operate.
Display LED
Operating mode
RED
Heat recovery
GREEN
Ventilation
2x
!
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70 s
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LED
LED
Drücken | Press
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Premere | Appuyer
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70 s
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LED
LED
Drücken | Press
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Premere | Appuyer
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