05/2005 - Art. Nr. 13 018 078A
20
Function
Operating mode
Safety mode
Schematic diagram
1
Two-stage fuel-oil pump cpl.
2
Fuel-oil pressure regulator, full
load
3
Solenoid valve, full load
4
Fuel-oil pump
5
Fuel-oil-pressure regulator, partial
load
6
Solenoid valve, partial load
7
Nozzle line
8
Turbulator
9
Flame tube
10
Burner motor
11
Air flap
12
El. air-flap actuation
Specific caption for L 04.500
2
Fuel-oil pressure regulator (partial
load and full load)
5
Solenoid valve (partial load)
6
Solenoid valve (full load)
Burner start-up
–
Depending on the heat requirement
at the boiler regulator, the automatic
control unit starts up the program
sequence.
–
Fan motor starts up, ignition
sequence activates.
–
Pre-ventilation with opened air flap
(air flap is only closed when burner is
shut down).
–
Solenoid valve
6
opens, pressure
regulation via part-load pressure
regulator
5
.
–
Flame begins to burn.
–
Ignition system disconnects.
Burner operation, regulation
between part- and full load
VECTRON L 04.410 DUO : The burner
functions with one nozzle and with two
fuel-oil pressures for part- and full load.
The fuel-oil pressures are regulated
independently of each other by two
pressure regulators in the pump.
When a requirement from the boiler
regulator is detected, the burner
switches over - after no less than 13
seconds.
–
from part- to full load - Air flap
11
is
moved into position by the air-flap
actuating mechanism.
–
On systems fitted with variable
air-flap adjustment, solenoid valve
3
closes, part-load pressure regulator
5
is deactivated, full-load pressure
regulator
2
takes over pressure
regulation.
Air flap moves on into full-load position,
full-load is in operation.
VECTRON L 04.500 DUO : the burner
functions with two nozzles and with one
fuel-oil pressure for part- and full load.
The fuel-oil pressure is regulated by a
pressure regulator in the pump. When a
requirement from the boiler regulator is
detected, the burner switches over -
after no less than 13 seconds.
–
from part- to full load - Air flap
11
is
moved into position by the air-flap
actuating mechanism.
–
n systems fitted with variable air-flap
adjustment, solenoid valve for second
nozzle opens,
Air flap moves on into full-load position,
full-load is in operation.
Safety function
A safety shutdown is carried out:
–
if a flame indication is present during
pre-ventilation (detection of
unauthorised flame)
–
if no flame is present at startup (fuel
release) after 5 sec. (safety period)
–
if no flame is present after flame
failure during operation, and an
unsuccessful attempt has been made
to repeat the program.
The fault indicator lamp lights up
whenever a safety shutoff has been
carried out. The system can be reset
(once the fault has been remedied) by
pressing the "Release" button.
L 04.410 DUO
L 04.500 DUO
Summary of Contents for VECTRON L 04.410 DUO
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