Control circuit for underfloor electric heating - has programmed heating with correction for external conditions and for thermal variations

摘要

The programmed heating control includes the preset room temperature, the outside temperature and the starting temperature of the heating block. The required heating effect is computed and applied at the start of the heating sequence. The actual rise in temperature is compared with the programmed value and any deviations are compensated for. In this way the effects of any thermal heat sinks, positive or negative, are corrected for. The heating period is divided in set smaller periods, to enable the control system to monitor the effects of the heating periods. A central controller can regulate the heating of several rooms, and also split the electric load for even demand. ADVANTAGE - Improved heating control, improved comfort, less variation due to external influences.