Mode 3 pressure sensor option
The mode 3 option works on the basis of a constant duct pressure. A pressure sensor, which must be installed in the supply duct, is supplied for this purpose.
The pressure sensor and the probes must be installed on the supply duct as shown above. The sensor is supplied with an internal cable connection. The connection to the control panel is made as shown in the wiring diagram. See Circuit diagram of the electrical connections.