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H4
H3
C
Emergency
2
thermostat
1
Burner
C
operating
2
thermostat
1
Fan
C
operating
2
thermostat
1
12
14
A1
KA1
A2
11
- power indicator light (green)
- malfunction indicator light (red)
- burn indicator light (orange)
- overheat indicator light (red)
H4
H3
C
Emergency
2
thermostat
1
Burner
C
operating
2
thermostat
1
Fan
C
operating
2
thermostat
1
12
14
A1
PE
KA1
PE
A2
11
X1
- power indicator light (green)
- malfunction indicator light (red)
- burn indicator light (orange)
- overheat indicator light (red)
H2
H1
FU1
PE
L
N
TK
TK
C
O
A
H
PE
L
N
TK
TK
C
O
A
H
XS
X1
M
- axial fan relay
- service switch
- axial fan
- burner fan
H2
H1
S
FU1
L
N
TK
TK
C
O
A
H
E
L
N
TK
TK
C
O
A
H
E
XS
M
- axial fan relay
- service switch
- axial fan
- burner fan
CONTROL AUTOMATIC
10
9
8
7
6
5
4
3
2
1
S
E
L1
N
PE
R1
R2
+
-
DC
E
L1
N
PE
R1
R2
+
-
DC
XR
XM
- control circuit power fuse
- resistance of fan power circuit
- power supply terminals
- terminals for control connection
CONTROL AUTOMATIC
10
9
8
7
6
16
5
4
3
2
1
8
L1
N
PE
R1
R2
+
-
DC
L1
N
PE
R1
R2
+
-
DC
XR
XM
- control circuit power fuse
- power supply terminals
- terminals for control connection
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
R
PE
N
L
R
1
2
3
N
L
PE
N
L
R
1
2
3
N
L
XP
X2
H
15
14
13
12
11
10
9
7
6
5
4
3
2
1
PE
N
L
5
1
3
2
4
N
PE
N
L
5
1
3
2
4
N
XP
X2
H
PE
PE
L
PE
L
PE
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