Heat exchanger system, fuel control system therefor, and methods

Details Heat exchanger system, fuel control system therefor, and methods Heat exchanger system, fuel control system therefor, and methods

1992-06-18

1993-05-11

Dority, Carroll B.

Combustion

Process of combustion or burner operation

Starting or shutdown procedure

431 31, 431 46, F23N 520

Patent

active

052096556

ABSTRACT:
A heat exchanger system, a fuel control system therefor and methods of making the same are provided, the fuel control system having an electrical circuit means that comprises an ignition trial portion, a flame sensing control portion and a timer portion that comprises a counter having a plurality of outputs and a timer that clocks the output of the counter on each discharge of the timer, the timer portion also comprising a capacitor, a trial time resistor and a wait time resistor that are selectively placed in series with the capacitor by the counter when clocked to certain outputs by the timer to determine an ignition trial time period and a wait time period.

REFERENCES:
patent: 4192641 (1980-03-01), Nakagawa et al.
patent: 4836770 (1989-06-01), Geary
patent: 4856983 (1989-08-01), Geary
patent: 4971549 (1990-11-01), Geary
patent: 4976605 (1990-12-01), Geary

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