Buderus Logano GC 124 II, Инструкция по установке и обслуживанию

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Boiler inspection and maintenance
Logano G C 124 II – 6 720 804 440 (2012/11) 28
Fig. 42 Troubleshooting the GC 124 II
S TART
Room thermostat (control) signals heat requirement
Flue baffle (if installed) opens.
Ignition spark generator operates
• ignition gas valve opens.
Pilot flame stand by
• ignition spark generator stops.
• main gas solenoid valve opens.
Main burner operation
• automatic ignition monitors ignition flame.
S pecified thermostat value (control) reached
Main and ignition gas valves close, gas burners ex-
tinguished, flue gas baffle (if installed) closes.
Ignition burner operation
Ignition flame burns, automatic
ignition signals steady ignition
flame.
or ignition flame does not burn, au-
tomatic ignition starts ignition at-
tempt, switches off after 90
seconds.
END
PHA S E 1
Ignition attempt
PHA S E 2
Main burner
operating
Power interruption
System switches off. Does
the system restart when
power is restored?
Pilot flame fault
Main gas valve closes,
ignition module starts
ignition attempt.
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