Buderus Logano GC124 II/SP Installation And Service Instructions Manual page 58

16 Boiler inspection and maintenance
Pilot burner opera-
tion continues even-
ly
Start
Main burner
operating
END
58
Thermocouple monitors ignition flame, ignition flame generates voltage in
thermocouple and keeps ignition valve open.
Room thermostat (control) signals heat requirement
Main burner operation
• thermocouple controls ignition flame.
• main gas solenoid valve opens.
Specified thermostat value (control) reached
Main valve closes, gas burner switches off. Ignition
flame is burning.
Installation and maintenance instructions Gas Boiler Logano GC124 II/SP • Issue 07/2006
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?