Adjusting the supply and extract air flows

Important:

Adjust the air flows according to the ventilation plan. First, set the valves to the correct adjustment positions. Next, set the fans as close to the optimal value as possible by consulting the fan diagram. You can use the gauge fittings connected to the unit or delivered with the unit when adjusting the total air flow of the system. Then, measure and adjust the air flows from the valves. Try to adjust the air flows without choking them with the valves. This makes the solution as quiet and energy-efficient as possible.

If the output ratio between the air flows is very high at first, the ventilation unit may have to carry out extra defrosting cycles in sub-zero temperatures, thus making adjustment of the air flows more complicated.

Note:

If the outdoor air is extremely cold (below -10°C with an aluminium cell or below -3°C with a plastic cell), the ventilation unit may have to defrost the heat recovery cell. The air flows cannot be adjusted during defrosting.



Attention:
The supply and extract air settings have been set by a specialist during the setup of the ventilation unit. These settings should be changed only when the ventilation unit is reconfigured, and not at any other time. Changing the ventilation settings so that overpressure is created can result in damage to the structures of the building.
  1. Open Expert settings.


  2. Select Fan settings.


  3. Select the supply or extract air fan and set the target fan speeds.