Ecoflam BLU 1500.1 LN PAB Mode D'emploi page 8

EN
Function
- General safety functions
Description of functions
When the system is switched on for the
first time, after a power failure or safety
shutdown, after a lack of gas or after the
system has been out of operation for 24
hours, the pre-ventilation period of 30
seconds begins.
During pre-purge period:
- blower pressure is monitored
- the combustion chamber is monitored for
flame signals.
At the end of the pre-purge period:
- ignition is switched on.
- main and safety valve are opened.
- burner starts.
Monitoring
The flame is monitored by an ionization
probe. The probe is insulated and fitted to
the gas head and is routed
1 108 143
F4 Minimum gas pressure switch
F6 Air pressure switch
Y13 Main solenoid valve
Y12 Safety solenoid valve
1 Thermally-triggered safety shut-off valve (installation resident)
104 Gas pressure regulator
106 Filter
108 Gas ball valve (installation resident)
119pBr Measuring point for gas outlet pressure
143 Giunto antivibrante (deve essere montata dall'installatore).
8 www.ecoflam-burners.com
through the flame disc into the flame
zone. The probe must not have any
electrical contact with earthed parts.
The burner switches to lock-out if a short
circuit occurs between the probe and
the burner earth.
During burner operation, an ionised
zone is produced in the gas flame
through which a rectified current flows
from the probe to the burner
Safety functions
- If no flame is produced when the burner
is started (gas release), the burner will be
switched off at the end of the safety
period, and the gas valve will close.
- If the flame goes out during operation,
the gas supply is interrupted and the
control unit goes to block.
- If there is a lack of air during reventilation
or operation, the control unit goes to
block.
- If there is a lack of gas, the burner does
106 F4 Y12 104
head.
Y13 119 pBr F6
not begin operation or switches off.
In the event of controller shutdown
- Controller thermostat interrupts heat
request.
- Gas solenoid valves close.
- Flame goes out.
- Burner motor switches off.
- Burner is ready for operation.
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