Viessmann VG III - Page 38

38
Connection and wiring diagrams
Connection and wiring diagram (cont.)
5692Ă534ĂGB
.
Control
Control
unit
components
Actuator
Actuator Control
burner stage 2
hours run counter
stage 2 external
Fuel
valve 2
Burner motor
Control demand
stage 1 stage 2
Control demand
Actuator Fuel valve 2 Burner motor
(slow)
(slow)
unit
components