System and method for controlling the operation of a primary burner

  • US 5,277,575 A
  • Filed: 04/29/1992
  • Issued: 01/11/1994
  • Est. Priority Date: 04/29/1992
  • Status: Expired due to Term
First Claim
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1. A control system for controlling the operation of a heating system having a combustion chamber, a thermostat, an igniter, a pump motor, the thermostat being adapted to generate a call for heat, the igniter and motor being powered by an electrical energy source and adapted to supply a spark and fuel to the combustion chamber, the control system comprising:

  • (a) a relay circuit having first and second relays, each of said relays having an open position and a closed position, the energy source being connected to the igniter and motor through said first relay and said second relay and when said first and said relays are closed;

    (b) a relay contact monitor in electrical circuit with said relays and configured to output a first signal when said relays are in said open position and a second signal when said relays are in said closed position; and

    (c) a relay control configured to energize said relays in response to the call for heat from said thermostat and said first signal from said relay contact monitor.

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