Cuenod NC12 B117, Руководство по эксплуатации

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07/2009 - Art. Nr. 13 022 182A 5
Basic circuit diagram
1 Fuel oil burner pump, complete
2 Fuel oil pressure regulator
3 Fuel oil burner pump
4 Solenoid valve (NO)
5 Nozzle line
6 Flame tube
7 Turbulator
8 Safety solenoid valve
9 Air flap
10 Blower
11 Burner motor
Operation
Fuel oil operation
Safety function
Description of the function
A pre-ventilation time of 24 seconds
begins when first powering up, after a
power cut or a lockout, after the gas
supply has been cut or after a shutdown
for 24 hours.
During the pre-ventilation time
- the air pressure is monitored
- the combustion chamber is monitored
to detect any flame signals.
At the end of the pre-ventilation time
- the ignition is switched on
- the fuel oil solenoid valves open
- burner start-up
Monitoring
The flame is monitored by a cell. The
flame current must be above 8 µA.
Safety function
- If no flame is produced when the
burner is started (gas release), the
burner is switched off at the end of the
safety time which lasts no more than
3 seconds and the fuel oil valves
close.
- If the flame is lost during operation, the
fuel oil supply is cut within a second. A
new start-up sequence is activated. If
the burner starts, the operating cycle
runs. Otherwise a lockout occurs.
- If there is an air failure during pre-
ventilation or operation, a lockout
occurs.
- If there is a fuel oil failure, the burner
either will not start or will stop. A
waiting period of 2 minutes will follow.
A new start-up sequence will be
activated. If there is still no fuel oil, a
new waiting period of 2 minutes will
follow. The waiting period can only be
stopped by switching the burner off.
Waiting periods: 3 x 2 min., then
1 hour.
During the regulator shutdown
- The control thermostat interrupts the
heat request.
- The fuel oil solenoid valves close
- The flame goes out
- The blower motor stops
- The burner is ready for operation
en