Boiler cycling controller

Details Boiler cycling controller Boiler cycling controller

1984-07-09

1987-01-20

Makay, Albert J.

Liquid heaters and vaporizers

Automatic control of fluid fuel and water

Once through

236 32, 236 91E, 236 91F, 237 8R, F22B 3500

Patent

active

046373497

ABSTRACT:
In a system for controlling a number of central heating boilers of large capacity having means for switching-off each boiler when the flow temperature reaches a predetermined maximum, the temperature at which each boiler is switched on again can be automatically varied in dependence upon the outside temperature in such a manner that as the outside temperature rises the boiler is switched on at progressively lower boiler flow temperatures, thus increasing the length of the boiler cycles. This is achieved by a boiler cycling controller which receives signals from temperature detecting devices located externally of the building and in the water flow and return lines and is operable automatically to vary the point at which the boiler is switched on.

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patent: 2626755 (1953-01-01), Tidd
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patent: 3979710 (1976-09-01), Jespessen
patent: 3995810 (1976-12-01), Banks
patent: 4003342 (1977-01-01), Hodgson
patent: 4108375 (1978-08-01), Keeney
patent: 4290551 (1981-09-01), Johnstone

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