inVENTer 1001-0200, Installation Instructions Manual

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SYSTEM OVERVIEW: IV-LIGHT VENTILATION UNIT

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iV-Light ventilation unit | Installation instructions

2.2  Function

The iV-Light ventilation units are used to provide ventilation for living rooms and bedrooms.  

An integrated ceramic thermal accumulator ensures optimum heat recovery.

The iV-Light ventilation unit is a ventilation unit with  

simple airflow and works according to 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 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 vol-

ume must always correspond to the extract air volume, i.e. at least two iV-Light ventilation devices 

are required. These are operated in pairs in push-pull mode: another ventilation unit is assigned to 

the ventilation unit 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 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 S3 according to EN 13141- 8 (max. 30 % air flow 

deviation at ± 20 Pa).

In order to ensure the full functioning of the ventilation unit throughout the entire year,  

a temperature sensor is integrated into the Xenion reversible fan. This measures the temperature 

of the air flow at 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 unit back to the originally selected mode.

As standard, a washable ISO Coarse 60 % class 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 regard

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less of the season. Optional pollen and activated carbon filters are available for special require

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ments.

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).

70 s