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Figure 9: Electrical diagram cof
= brown
= blue
= yellow/green
= black
= Earth
N = Neutral
L = Live
A = ‘I/0’-switch
B = Overheating cut-out
C = High-limit thermostat
D = Control thermostat
E = Male 7-pole connector
6. Appendix:
6.1 Electrical diagram cof
IMD-0010
H1 = Running time counter
SB = Fault alarm
Note:
If, in the case of a Riello front-mounted burner, a running
time counter (H1) is connected by means of a cable
longer than 3 m, a 47 nF capacitor must be fitted bet-
ween B4 and earth to prevent EMI.
The same applies to the installation of a fault alarm (SB);
in this case a 100 nF capacitor must be fitted between S3
and earth, if the cable length exceeds 3 m.
1
2
4
3
12
11
11
12
N
L L
N
T
0
1
L
N
230V AC
50Hz
E
F
D
C
B
A
T S B N
L N
T T S B
SB
h1
1
1
1 1
11
2
2
2
2
2
2
2
3
2
3
3 2 1 3 4 4 4 4
2 4 4 4 4
4 4
4
4
4
3
3
3
1
1
1
4
4
4
2
2
2
REV. CHANGES CHG.NO. BY CHDATE
REVISE BY COMPUTER ONLY
AM.PROJ.
0
1
2
RELEASE
DIVERSE WIJZIGINGEN
AANSLUITINGEN ITEM A GEWIJZIGD (WAS FOUTIEF)
5181
5313
9237
A4
A4
IMD-0010
CONNECTION DIAGRAM COF
MS
MS
MS
290601
261001
100815
DRAWING
NUMBER
IMD-0010
25


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