Viessmann VITOCROSSAL 200 Installation Instructions Manual page 22

Fitting the thermal insulation and casing
Inserting the plugs into the gas burner control unit and burner
3 B
3 A
1 5
A 1
5 B
72
152
95
53
Fig. 16
3A/3B Boiler water temperature sensor
15A/15B Flue gas temperature sensor
53 Flue gas damper, optional
72 CAN bus burner
22
(cont.)
95 Safety chain
100 Fan control
152 Mains voltage