Convector heaters network temp. controller - has programmable clock monitoring changeover with master control circuit operating with individual heater controllers

摘要

Each convector heater in a network is controlled by a master control circuit and also by an individual supplementary controller. This enables each heater to control temperatures from demanded values from either controller. The convector heater master control (c) sets the master demand temperature. A second control (3) sets the demand temperature for night time. These controls are included in resistor chains (R1, R2) which are connected alternately to an integrated circuit regulator (4). A programmable clock (5) controls changeover to one or other control circuits by wires (7a, 8a) which activate changeover reed relay (9).