Bosch Singular 4000 - Operating the Boiler; Turning the Boiler On or Off; Setting Space Heating Temperature

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Service Manual
Singular Combi Boiler - BTC 439002301 A (12.2021)
Figure 2
Ignition transformer
Control Board
Touch Pad
Secondary heat
exchanger
Primary heat
exchanger
Flow sensor
Air Pressure Switch
TDR damper
Water Pressure Sensor
Turbo fan assembly
High Limit Cutout
Supply T3 (203°F)
High Limit Cutout
HEX T2 (302°F)
Condensate Trap
Flame rod
Electrode assembly