28
13 - NORMAL SEQUENCE OF OPERATION
1.
to control.
B.
C.
2.
Base
Burner
Door
Figure 13-1 Blocked Vent Safety Switch, Roll-out
Safety Switch (Front Panel Removed)
13.1 General
Gas
Valve
Burners
Control
View Port
WARNING
Wear personal protection when servicing this boiler.
!
WARNING
!
Control
B. Circulator continues to operate under this condition
3.
B.
Figure 13-1.
If either of these condition A or B exist:
Do not attempt to place boiler back into operation.
Contact certied service agency. Do Not jumper
safety switch(s).
PN 240012889 Rev. A [07/31/2020]
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