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