Honeywell controls the home with more zones

24 July, 2005

Wireless control of a 19-zone heating system in a large home in Greater London is achieved using two Honeywell Hometronic Managers and five heating manifolds.

A Honeywell Hometronics wireless home-automation system controls a 19-zone heating system and the domestic hot water in a large private home in Stanmore, Greater London. Each of 38 radiators is plumbed individually back to one of five manifolds, as used for underfloor heating, and served by two boilers. Time and temperature programming is by two Hometronic managers, one each for upstairs and downstairs. They use radio-frequency wireless transmission to send programmed time and temperature data to controllers near each manifold. Each of the home’s 19 rooms is a separate heating zone, with a wireless Honeywell room sensor allowing local adjustment within ±0.5 K of the set point. Depending on the need for heat to an individual radiator, the controller opens or closes a motorised valve on the manifold, so providing singular flow adjustment to that radiator. The Hometronic Managers allow for 16 time/temperature sequences for the upstairs rooms and a further 16 for those downstairs. The plumbing and electrical systems were installed by NRT Plumbing & Heating, whose Neil Thackeray says, ‘Installation of Hometronic was problem free and after two years, we have never been called back to attend to it.

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