13
SYSTEM OVERVIEW
inVENTer
®
iV14R/iV14V ventilation system
•
Installation and operating instructions
2.2
Function
The inVENTer
®
iV14 ventilation system works on the heat recovery principle by changing the
rotational direction of the fan. The integral thermal accumulator is charged with the heat of the
indoor air when it lows outside (extract air). When the fan changes direction, it releases the
accumulated heat to the incoming outdoor air (supply air).
To ensure that this principle works correctly and that the volume of supply air matches the
volume of extract air, at least two inVENTer
®
iV14 ventilation units are required. One ventilation
unit operates in supply air mode and the other in extract air mode. After 70 seconds, the fan
changes its rotational direction.
Before starting work, you should have a drawing from which the number of ventilation units, their
position, the ventilation principle (cross ventilation, individual room ventilation, extraction) and
relevant controllers can be determined. The following basic rules apply to the functioning of the
ventilation units:
Paired operation of the ventilation units:
The volume of supply air should match the volume
of extract air. Every ventilation unit that is conveying supply air should be assigned to another
ventilation unit that is simultaneously conveying extract air. The project is used to assign the
starting order of the ventilation units. The sequence may need to be changed following start-up
of the controllers. When delivered, all of the ventilation units are set to "Extract air".
Synchronisation:
The ventilation units must be synchronised when using multiple ventilation
units controlled via multiple controllers (see installation and operating instructions for the
controller). All of the controllers should be connected via a mains fuse in the building distributor.
Cross ventilation:
A decentralised ventilation system based on the free movement of air
between individual pairs of ventilation units. For this reason, internal doors must not have an
airtight seal. Air transfer measures must be implemented: an air gap of approx. 10 mm below the
door, unscrewing door hinges by 5 mm, use of a ventilation grille, or other measures.
