Bosch SSB85 - 3 Boiler Components

6720866940 (2017/11) US SSB
6 | Boiler components
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Fig. 2 Boiler components
[1] Pressure differential switch
[2] Fan
[3] Burner head
[4] Spark electrode
[5] Circulation pump
[6] Condensate trap
[7] Return temperature probe
[8] Heat exchanger
[9] Main controller
[10] Automatic air vent
[11] High limit temp. safety switch
[12] Supply temperature probe
[13] Gas valve
[14] Low water cut off probe
3 Boiler components