44
ซ.บรมราชชนนี
70
ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวีวัฒนา กทม.
10170.
โทร:
02-888-3472
Line ID: @add11 Wechat ID: add0883001122
Mode of operation of the flame safeguards with multi-flame supervision
(detailed connection diagram, e.g. for
gas burners)
LEC1
1 2 6 5 7
13 14
15
4
1
6
3
8
FR
ION
9
+
0
I
Z
L1
10 QRA...
BS
7
5
2 LFE10
GV1 GV2
4
1
6
3
8
FR
ION
9
+
0
I
Z
L1
10 QRA...
BS
7
5
2 LFE10
GV1 GV2
4
1
6
3
8
FR
ION
9
+
0
I
Z
L1
10 QRA...
BS
7
5
2
LFE10
GV1 GV2
P(R) N(Mp)
7781a03/0903
Like with dual-supervision, the control contacts
of the flame relays of all flame safeguards
must be connected in series when using multi-
flame supervision.
A burner causes all other burners to go
to lockout if:
the flame is not established during the
safety time
or
the flame is lost during operation.
Correctly operating burners can be restarted
only
– after the burner control has been reset
– when the faulty burner has been shut down.
In that case, the operating switch must not only
bridge the control contacts of the respective
flame safeguards, thus closing the control
chain again, but must also break the phase
wire connection to the ignition transformer and
the fuel valves.
Likewise, after rectification of the fault, the
burner can only be restarted in connection with
the other burners, that is, only after all burners
have previously been shut down.
Caution!
Terminal 10 must be connected to
earth also when using the flame
detector QRA!
Legend
BS
Operating switch OFF / ON
per burner
ION
Ionization probe for ionization supervision
FR
Flame relay
GV1 / GV2
Gas valve for 1
st
and 2
nd
stage
L1
Built-in signal lamp
indication of flame
QRA...
Flame detector
Z
Ignition transformer
12/15
Building Technologies Division
CC1N7781en
01.08.2016
