Buderus Logano G124X II/SP Installation And Maintenance Instructions Manual page 52

13 Boiler inspection and maintenance
Ignition burner
operation continues
evenly
Start
Main burner
operating
END
52 Installation and maintenance instructions Logano G124X II/SP special gas-fired boiler • Issue 04/2005
Thermal element monitors pilot flame, pilot flame generates voltage in
thermal element and keeps ignition valve open.
Room thermostat (control) signals heat requirement
Main burner operation
• thermocouple controls ignition flame.
Specified thermostat value (control) reached
Main valve closes, gas burner switches off. Ignition
flame is burning.
Vent damper opens.
We reserve the right to make any changes due to technical modifications.
Power interruption
System switches off. Does
the system restart when
power is restored?