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Fuel Economizer

  • US 20100025484A1
  • Filed: 07/29/2008
  • Published: 02/04/2010
  • Est. Priority Date: 07/29/2008
  • Status: Active Grant
First Claim
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1. An electronic circuit to conserve fuel consumption and reduce carbon dioxide emissions in a heating system that comprises a burner that heats water;

  • and, a room thermostat comprising a setting for a lower temperature limit and an upper temperature limit wherein the room thermostat is operable to activate the burner upon detecting a room temperature at or below the lower temperature limit and deactivate the burner upon detecting a room temperature at or above the upper temperature limit, the electronic circuit comprising;

    (a) an override thermostat comprising a setting for a lower temperature limit and an upper temperature limit below those of the room thermostat and operable to activate continuous operation of the burner until the upper temperature limit of the override thermostat is reached when the indoor temperature falls below the lower temperature limit of the room thermostat; and

    ,(b) a timer operable to deactivate and reactivate the burner while the room thermostat is calling for heat.

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