Bosch 15SBI Service Manual Page 12

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Page view 11
12
X11
Pin 3
X2
Pin N
Power ON - Green
Electronics
Frost Thermostat
(if fitted)
Room Thermostat
(if fitted)
Operating Switch
or Programmer
X2
Left
Terminal
X2
Right
Terminal
X12
Pin 1
X12
Pin 3
X12
Pin 4
X12
Pin 5
Central
Heating
Hot water
ON
OFF
ON
Live
Fuse F1
4A Fast
X1
Pin L
Electronics
RY
101
RY
102
RY
2
Provides CH only signal
X2
Pin Lr
X2
Pin LS
X11
Pin 1
X11
Pin 2
X10
Pin 3
X10
Pin 2
X10
Pin 1
Cylinder Thermostat
Satisfied
Call
C
Y
O S
X5
Top Pin
X5
Top Pin
X4
Top Pin
Pump
Fan
N
N
N
N
Reset Button
Temperature Control
Temperature Sensor
Air Flow Switch
Flame Sense
N
N
Mid
Position
Valve
white
grey
orange
Y Plan
*
S Plan
Zone
Valve
CH
Spark
Boiler Demand
Electronics
High
Voltage
Safety
Low
Voltage
Fan
Pump
Gas
Valve
X3
Pin 1
X3
Pin 4
X3
Pin 3
Overheat
Thermostat
X3
Pin 2
* A Mid-Position Valve is
available, as an option, for
fitting within the appliance.
S-Plan valves can only be
fitted outside the appliance
Zone
Valve
DHW
Fig.14 . Wiring diagram - functional
N
Slide switch
DC
Optional Link
Page view 11
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