11
USER AND SAFETY INSTRUCTIONS
Ventilation device iV14-MaxAir
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Installation and operating instructions
2.2
Function
The iV14-MaxAir ventilation unit is used to provide ventilation for living spaces and living space-like
commercial premises. An integrated ceramic thermal accumulator ensures optimum heat recovery.
The ventilation device operates on the principle of heat
recovery by changing the direction of the fan. The integrated
thermal accumulator charges itself with heat energy from
the indoor air as it flows to the exterior (extract air).
After 70 seconds, the Xenion EFP reversible fan changes
direction. When the fan changes direction, it releases the
stored heat energy into the incoming outdoor air (supply air).
For this principle to work correctly and to ensure pressure
stability in the room, the supply air volume must always
correspond to the extract air volume, i.e. at least two
iV14-MaxAir ventilation devices are required. These are operated in pairs in push-pull mode:
Another ventilation device is assigned to the ventilation device that delivers supply air and
at the same time removes used extract air from the interior to the outside.
Thanks to a high pressure build-up and the active speed control of the motor (integrated wind
pressure stabiliser) in the Xenion EFP reversible fan, the air flow in the system is kept almost
constant even in the event of weather-related pressure fluctuations. Thus, the sensitivity
of the air flow to pressure fluctuations corresponds to class S2 according to DIN EN 13141-8
(max. 20 % air flow deviation at ± 20 Pa).
In order to ensure the full functioning of the ventilation device throughout the entire year,
a temperature sensor is integrated into the Xenion EFP reversible fan. This measures the
temperature of the air flow an the fan. If the temperature at the fan falls below +5°C, the reversible
fan is automatically switched to extract air mode for 4 cycles. This allows the thermal accumulator
to heat up again and prevents cooling of the interior due to cold supply air. During this phase,
the operating mode that has been set on the controller is ineffective. Subsequently, the controller
switches the ventilation device back to the originally selected mode.
As standard, a washable class G4 dust filter is unobtrusively and easily accessible integrated into
the inner cover. This filters coarse dust and allergenic particles (such as coarse flower pollen)
from the air before they can enter the interior. The dust filters can be used regardless of the
season. Optional pollen and activated carbon filters are available for special requirements.
A decentralised ventilation unit is based on the free movement of air between individual pairs
of ventilation devices. Therefore, internal doors must not have air-tight seals. Provide suitable
air transfer measures to create a room network: an air gap of about 10 mm below the door,
unscrew the hinges by 5 mm, use a ventilation grille or similar (cross ventilation).
The ventilation device is operated via an inVENTer system controller. Depending on the controller,
different operating modes and functions can be set.
70 s
Supply mode
Extract mode
