Appendix E Falcon Lead Lag
E-57
• In between those two extremes the Add-stage and Drop-stage methods determine when staging occurs.
The stager handles burner on and burner off events. It operates according to this state transition diagram.
The stager has the following variables:
StagerState: encodes the current state of the stager.
StagerTimer: multipurpose 1 second timer used by states which measure time.
StagerTimeLimit: the timeout value for the StagerTimer
LeadStartup: flag indicating the lead boiler is starting
AddStageA: the stage being added to those already firing
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