Buderus G234X/38, Инструкция по установке и обслуживанию

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Boiler inspection and maintenance
Logano G234X – 6 720 811 233 (2017/02) 30
Fig. 38 Troubleshooting the G234X
START
Room thermostat (control) signals heat requirement
Vent damper (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
• pilot assembly monitors ignition flame.
Specified thermostat value (control) reached
Main and ignition gas valves close, gas burners ex-
tinguished, vent damper (if installed) closes.
Ignition burner operation
Ignition flame burns, automatic
ignition signals steady ignition
flame.
or ignition flame does not burn,
pilot assembly starts ignition at-
tempt, switches off after 90
seconds.
END
PHASE 1
Ignition attempt
PHASE 2
Main burner
operating
Power interruption
S ystem switches off. Does
the system restart when
power is restored?
Pilot flame fault
Main gas valve closes,
ignition module starts
ignition attempt.
6 720 804 440-53.2T