Operating the unit

Centro-M

No operation of the standalone unit is possible. It is used in systems with a jointly variable volumetric flow. In combination with a timer and a step transformer, the volumetric air flow of the entire air extraction system can be controlled centrally.

Centro-E

Exhaust air element with servomotor. For use in systems with variable volumetric flows for individual apartments. Basic and demand-based ventilation can be switched on and off via a light switch. Demand-based ventilation after start delay of approx. 1 minute. Overrun time after switching off, approx. 3 minutes.

Control of the volumetric air flows within the ventilation system with Centro pressure controller. Speed control of the central fan automatically.

Centro-H

Exhaust air element with servomotor and humidity control. For use in systems with variable volumetric flow for individual apartments. Standard operation – basic ventilation, automatic switchover to full load if required (switch-on/switch-off point adjustable). Demand-based ventilation can also be switched on by light switch.

Control of the air volume flows within the ventilation system by pressure or speed control of the central fan.

Once the exhaust air element has been installed, the unit regulates to the current room humidity (relative humidity). This humidity value is saved as the first reference value. The reference value does not have to be specified manually. If the room humidity rises by 7 % within 2 minutes, the exhaust air element switches to full load operation (demand-based ventilation). If the relative humidity falls below the reference value during operation, the newly established reference value is saved. The exhaust air element then automatically switches back to base load operation or to Off. Demand-based ventilation automatically or via a switch (e.g. light switch). After manual switch-on (light switch) the exhaust air element runs with a start delay of approx. 1 minute with demand-based ventilation (full load). After manual switch-off, the exhaust air element continues to run in nominal load operation with an overrun time of 15 minutes (valve closing time approx. 2 - 3 minutes).

When switch is open, the exhaust air element can start up automatically as a result of high room humidity.