Bosch Singular 4000 - 12 Wiring Diagram

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Installation Instructions
Singular Combi Boiler - BTC 439003301 B (2021/07)
12 Wiring Diagram
Figure 86
Over Heat Thermostat
DC FAN
Flame Rod
White
Black
120VAC,5A
Power
White
Green
Black
( AC 120V )
Ignitor (AC 120V)
Air Pressure Switch
Ground
CIR
MAX
MIN
HB
Yellow
White
Black
Red
CAS
Ex2
Ex1
PRG
RST
Black
Red
White
Black
Brown Brown
Blue
Black
Red
(Solenoid Valve)
T.D.R Damper
Gas Valve
Red
Red
Pressure Sensor
Red
Flow Detect Switch
Black
Purple
White
White
Exhaust
Thermistor
Yellow
Yellow
Remote controller
3-way Valve
PUMP
White
White
Green
Green
Blue
Blue
SRW Red
SRW Red
Condensate trap
Blue
Blue
Green
Red
Gray
Gray
Black
Black
Black
GND
OPTION
RCOP
Brown
Brown
Outdoor
Thermistor
OPTION
Domestic
Hot Water
Thermistor
Space Heating
Supply
Thermistor
Space Heating
Return
Thermistor