Anticipatory thermostat with reset for domestic hydronic boiler

Details Anticipatory thermostat with reset for domestic hydronic boiler Anticipatory thermostat with reset for domestic hydronic boiler

1985-08-30

1986-07-15

Green, Randall L.

Stoves and furnaces

Liquid heater

Fluid fuel burner for other than top-accessible vessel

219330, 219309, 219310, 219292, 219282, 236 20R, 236 47, 236 91FX, 236 22, 236 37, 237 8A, 236 21B, 236 91F, F24H 100

Patent

active

045999929

ABSTRACT:
A hot water heating system for a building has a hot water storage tank, a combustor, a burner for firing the combustor, a plurality of radiators, a pump for circulating hot water to and from the plurality of radiators, a first thermostat for measuring the temperature of the hot water in the storage tank and for controlling the burner in response to such temperature, a heat exchanger in the storage tank, a cold water inlet line, and a hot water outlet line. The improvement comprises a cold water heating element arranged around a portion of the inlet line, a temperature sensing element arranged in close proximity to the heating element, and a second thermostat for anticipatorily controlling firing of the combustor by the burner via the first thermostat. Also, the second thermostat, via an electrical line, shuts off the pump when the second thermostat is causing firing of the combustor by the burner.

REFERENCES:
patent: 4166944 (1979-09-01), Scott
patent: 4354094 (1982-10-01), Massey et al.
patent: 4371779 (1983-02-01), Maynard et al.
patent: 4413775 (1983-11-01), Scott
patent: 4501261 (1985-02-01), Tsutsui et al.
patent: 4535931 (1985-08-01), Bartok et al.

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