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Honeywell controls heating zones without wires
Published: July 2007
Honeywell’s wireless CM900 programmable thermostat can be used to create heating zones by transmitting time and temperature signals to wireless receivers on radiator and underfloor-heating valves. It can also transmit to a boiler controller, eliminating all control cables in a conventional installation. Honeywell HR80UK wireless controllers are fitted to the valves to be controlled. There is no need for a 2-port valve for the zone and no need to drain the heating system. Additional heating zones can be added to a CM Zone wireless zone-control system. The signals transmitted to the boiler controller provide a multi-point boiler interlock, optimising boiler firing to save energy and reduce boiler wear. Up to four wireless thermostats can operate with the same boiler controller. Up to six time/temperature changes can be programmed each day, guided by instructions on the screen of the thermostat. For more information on this story, click here:Dec 2007, 275 Related articles: 
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