User Manual

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Building Technologies Division CC1N7785en
20.11.2017
Control sequence in the event of fault and indication of lockout (cont´d)
P
a
b´
b
a
b´
b
2
1
a
2
b
a
b
1
P
P
1
P
1
2
a
b´
b
P
1
2
LOK16.140...
LOK16.250...
LOK16.650...
LGK16.122...
LGK16.133...
LGK16.322...
LGK16.333...
LGK16.622...
LGK16.335...
LGK16.635...
7785p02/0296
a-b Startup sequence
b-b´ With certain time variants:
Idle steps of the sequence switch up to the self-shutdown after burner startup
(b´ = operating position of the sequence switch)
b(b´)-a Postpurge sequence after controlled shutdown.
In start position (a), the sequence switch switches itself automatically off or
immediately initiates another burner startup (e.g. after a fault has been
corrected)

Duration of safety time with expanding flame burners

Duration of safety times with interrupted pilot burners
When lockout has occurred, the burner control can immediately be reset:
 Do not press the lockout reset button for more than 10 seconds
The sequence switch always travels to the start position first
 After resetting
 After rectification of a fault that led to shutdown
 After each power failure
 During this period of time, power is only fed to terminals 7 and 9...11
After that, the burner control programmed the restarting of the burner

Note!
Do not press the lockout reset button for more than 10 seconds.
Lockout indication