Siemens LEC1 Series User Manual

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Building Technologies CC1N7761en
HVAC Products 19.02.2007
Connection examples and sequence diagrams (cont’d)
Double- or multiflame supervision of burners for selectable operation with oil or gas (expanding flame burner)
Startup with short preignition (3 seconds) and checked actuator control.
Control of the 2nd output stage via on / off controller «R2».
Required type of flame safeguards: LFE10... with UV detectors QRA...
P
H
M1
M2
M
M
c1
e1
c2
e2
P
(R)
1212 15
(17)
3
18 8 9
22
N
(Mp)
L2
c1/c2
e1/e2
c1/c2
LP
P
T
W
GP
c1
1
a
LK
100%
M
2
z
11
12
36
13
14
15 17
20
21
6
BS1
I
II
III
IV
T
R2
d1
46%
31%
38%
16
N
0%
33%
45
7
8
(SQ...)
GV3
Z
d1
UL.2
11
7761a08/0896
LEC1...
19
16 13 14
3
7
4
5
6
FW
3
7
4
5
6
FW
(LFE10)
T
R1
4
BS2
OV3
GV1
OV1
5
GV2
OV2
710
BS2
I
II
III
EK2
SB
Operating switch BS1
I
Nominal load
II
Stop
III
Partial load
IV
Automatic control
Operating mode selector BS2
I
Gas
II
Off
Luft
Gas
M
GV2
LK
7761a09/0696
GV3
GV1
OV1
OV3
OV2
Öl
III
Oil

Siemens LEC1 Series Specifications

General

Brand	Siemens
Model	LEC1 Series
Category	Control Unit
Language	English