Microprocessor-based boiler sequencer

Details Microprocessor-based boiler sequencer Microprocessor-based boiler sequencer

1994-05-23

1995-09-26

Wayner, William E.

Liquid heaters and vaporizers

Automatic control of fluid fuel and water

Multiple boiler regulation

236 78D, 431 60, F22B 3742

Patent

active

054526876

ABSTRACT:
A boiler sequencer system having a microprocessor based controller which allows the firing rate for multiple boilers to be increased or decreased with a proportional output integrated with the process variable rate of recovery that is desired, preventing unnecessary rapid advancements to high fire even when a boiler is started with a high off-set of the process variable from its set point. The controller automatically overrides this proportionate control when the process variable rises above a predetermined maximum or falls below a predetermined minimum.

REFERENCES:
patent: 4513910 (1985-04-01), Bartels
patent: 4787554 (1988-11-01), Bartels et al.
patent: 4994959 (1991-02-01), Ovenden et al.
patent: 5042431 (1991-08-01), Shprecher et al.
patent: 5172654 (1992-12-01), Christiansen
patent: 5355938 (1994-10-01), Hosoya et al.
Fireye Bulletin, E-3401(A), Oct. 1991, E340 Boiler Room Control Technical Description and Set-Up Manual.

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