Zehnder ComfoVar Aero Manuel D'installation Et D'entretien page 38

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2. Description and recognition

2.1

Operation of the air volume controller

Fig. 2.1 - Air volume controller

The air volume controller is preferably extended with two silencers, which are connected to each VM. The

volumetric flow control system can be controlled via various optional control components, including:

1. Zehnder CO2 Sensor type 0-10V;

2. Zehnder CO2 Sensor type RF;

3. Zehnder ComfoSwitch;

4. Pulse Switch / Bathroom Switch;

5. Zehnder Timer RF;

6. Zehnder RFZ;

7. 0-10V controlling component.

Not all control components are available in all Zehnder countries.

The RF control components only work together with a CM-connect.

38 - EN

10001124369-0123-zw-zw-A4 ComfoVar Aero Installer_Service Zehnder-General_BOOK_2.indb 38

The air volume controller is a combined supply and

extraction air system for air exchange within individual

houses (apartments/studio flats) in multi-storey

buildings. The supply air volume and the extraction air

volume are intelligently and individually regulated. The

system uses an air handling unit (AHU) located

centrally in the building for air supply and air

extraction.

In each individual house, there are two valve modules

(Valve Modules, VMs) and one control module (Control

Module, CM). One VM takes care of the air supply and

one VM takes care of the air extraction. The

combination of the two VMs with the CM together form

the Zehnder ComfoVar Aero system. In the rest of this

manual, we will call this system the air volume

controller.

The CM is available in two versions. There is a CM-

basic that can only communicate with two VMs. There

is also a CM-connect and it can also communicate with

other CM-connects. The Modbus RTU protocol is used

for this communication.

24-01-2023 11:10