5 6 7
"
CA24
BB
.-----G
230VAC
31
32
20
3
~-~~-~
33
11
44 43 42
41
0 0 0 0
::Dl
Ill
,...
47 46
~
121
121
''I
I I •
15
!._
17
49
0
G~
48
G
MAIN BOARD SUPPLY CABLE
11
TTB
TEMP. SENSOR
31
ROOM
THERMOSTAT (OPTIONAL)
45 RESET BUTTON
3 PUMP 12 DHW
SENSOR 32 TIMER (OPTIONAL) 46 PB3 SERVICE BUTTON
5
IONIZATION ELECTRODE
13 CH
SENSOR 33 TERMINAL
(4
POLES) 47 PB4 CHIMNEY .SWEEP BUTTON
6
IGNITION ELECTRODE (EARTH}
14 SHORT CIRCUIT
34 TIMER SUPPLY (OPTIONAL}
48
CH
TEMP. CONTROL POTENTIOMETER
7 IGNITION ELECTRODE 15
WATER
FLOW SENSOR
41
LED L3 49 DHWTEMP. CONTROL POTENTIOMETER
8 ON/OFF SWITCH
16
WATER
PRESSURE SWITCH 42 LED
L4
9
FUSE2A
17 LIMIT THERMOSTAT 43 LED L8
10 TERMINAL WITH FUSE
20GASVALVE
44
LED L7
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