|Every radiator is supplied with a thermostat incorporating a remote sensor. This sensor has a small built in heating element, which is able to warm up the sensor by up to 10 degrees celcius. It is therefore possible to fool the sensor into measuring a higher room temperature than actually exists, and by this means, the radiator can be regulated.
The heating element is connected to a digital output configured for duty-cycle control from 0 to 100 %. This provides a temperature variation control of 0 to 10 degrees celsius. This function is used at night and during air conditioning.
|Each window is provided with a small switch, which is used to indicate whether the window is open. If this the case, the surrounding radiators are automatically turned down.|
|Regulation is performed locally by a PD 3120 Digital I/O. However, it is still possible to upload setpoint temperatures and read the status of the window switch, for perhaps alarm purposes, from any P-NET master on the network.|
International P-NET User OrganizationP.O. Box 192
Send us an e-mail