12 CC1N7761E
Start-up with short pre-ignition (3 s) and supervised air damper control. No load control.
Necessary flame safeguards: type LFE10... with UV-detectors QRA... or ionization field.
Air damper control, detailed
In case of burners without air damper or with an air damper not controlled by the control unit, terminals 20, 21 and
22 must be interconnected; the path 18-c1-21 of the circuit, however, must be omitted!
A Start G-H Operation
A-B Normal start-up H Loss of flame
B-C Operation H-I Lockout
C Controlled shutdown I Reset
C-D Post-purge I-K Run into start position
D-E Closing of the air damper K Restart
E-F Burner off-period K-L Start-up
F Restart L
Operation
F-G Start-up
Double or multi-flame
supervision of gas
burners (expanding
flame burner)
Luft
Gas
M
LK
GV3
GV2
GV1
7761a06/0696
t11 t1 t12 t11 tn t6 t12
22
21
21/d1
18/c1/d1
20
LK"a"
LK"z"
A
BCDE
7761d04/0696
Important
AB
t8
t7
t11
t1 t12
t2
t3´
t4
t5
M1
M2
LK
Z
GV1
GV2
GV3
FW
L2
Kl.3
17
22/21
6
5
7
11
13/14
12
tn
C
t6
DE F G H
t6
t7
t1
t2
KL
7761d05/0696
I
t3´
t5
t4
Legend
for the switching diagram
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