Viessmann VITODENS 100-W Manual page 72

Schemen
Connection and wiring diagram
dD Flow switch
dG Gas solenoid valve
fÖ Mains input 230V~/50Hz
fJ Temperature limiter
gF Ignition unit
72
(Fortsetzung)
gH Mains connection accessories/
room temperature control
a-ÖA Fan
aCA Air pressure switch