9.1 Recycle
Figure 9.1.i Recycle
When the burner enters the Recycle phase shown in Figure 9.1.i, both the fuel valves and air damper go to their
respective commissioned ‘closed’ positions, and the burner is not firing.
As the burner is off in Recycle, there should not be any flame detected. The UV scanner checks that there is no
flame, and if a flame is detected, the lockout ‘Simulated Flame’ will occur. This could be a result of after burn and
must be investigated. A post-purge could be necessary. See option/parameters 118 and 135.
While the MM is in the Recycle phase, if T53 is switched ON, there will be a time delay before the burner starts up.
See option/parameter 119.
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