elco P3.430 L-Z/TEH series Betriebsanleitung Seite 60

Operation
Operating function
Safety function
Operating function
- Following the request for heat
transmitted through the boiler
regulator, the light oil control
(combustion) programmer initiates
the programme.
- The motor starts, the plant ignites
and the 15-second pre-ventilation
time starts.
- During the pre-ventilation phase, the
presence of the pilot flame on the
brazier is checked.
- At the end of the pre-ventilation
phase, the light oil solenoid valves
open and the burner starts.
- The burner's operation disengages
the ignition.
Normal disengagement
- The boiler's thermostat interrupts the
heat demand.
- The light oil solenoid valve closes
and the flame dies out.
- The burner motor switches off.
- The burner is ready for operation.
Safety function
Switching off due to possible
disturbances can occur in the following
cases:
105
60
- if during the pre-ventilation phase a
signal flame appears (external light
monitoring);
- if, during the start-up phase (consent
to fuel), after 5 seconds (safety time)
no flame switches on;
- if, when the flame switches off while
the plant is functioning, after a failed
attempt to restart the appliance, no
flame is generated.
A fault indicator light turns on whenever
the appliance switches off in case of
anomalies, and can be newly reset
once the cause of the malfunction has
been resolved, after pressing the
unblock button. For further information,
consult the control (combustion)
programmer description.
101
103
HS
M
M1
106
Y1
09/2014 - Art. Nr. 4200 1058 9900
SV
M1
102
HS
T1
Y1
Y2
104
Y2
101
102
103
104
105
106
118
SV
T1
118
Burner motor
Hydraulic system
Ignition transformer
Light oil valve
Light oil valve
Fan
Pump
Air shutter
Pressure regulator
Hoses
Filter
Nozzle
Safety valve