19
Bentone
Svart
-
+
Q
R
B
12
11
Black
Schwarz
Noir
A1
DC
μ
A
1
Switch on operating switch and twin thermostat
A spark is formed. The air damper motor opens the damper to low load
position. The burner motor starts, the prepurge goes on till the prepurge
period expires and the solenoid valve 1 opens (2).
2.
Solenoid valve 1 opens
Oil mist is formed and ignited. The photocell indicates a flame. The
ignition spark goes out after flame indication (See Technical data oil
burner control).
3.
a
b
The safety time expires
If no flame is established before this time limit the control cuts out.
If for some reasons the flame disappears after this time limit, the burner
will make an attempt to re-start.
4
High/Low thermostat ON
The burner is in operating position and can now change between full load
and low load.
4-5
Operating position
If the burner operation is interrupted by means of the main switch or the
thermostat, a new start takes place when the conditions in accordance
with point 1 are fulfilled.
The oil burner control cuts out
A red lamp in the control is lit. Press the reset button and the burner
re-starts.
5.2.1
List of components
A1
Oil burner control
U2
UV-cell QRC
E1
Preheater
S3
Control thermostat
E2
Burner without preheater
S4 Temperature limiter
F1
Fuse
max. 10 A
S7
Main switch
H1 Lamp, low capacity
T1
Ignition transformer
M1
Burner motor
Y1
Solenoid valve
P1 Time meter, low capacity
(optinal)
X3
Plug-in contact, burner
R1
Flame detector QRB
X4
Plug-in contact, boiler
!
Mains connection and fuse
in accordance with local
regulations.
5.3.1
Technical data
LMO14.113...
LMO24.255...
15 s
25 s
16 s
26 s
3 s
5 s
< 10 s
< 5 s
< 1 s
< 1 s
< 1 s
< 1 s
-5 - +60°C
-20 - +60°C
45 µA dc
45 µA dc
5.5 µA dc
5.5 µA dc
160303-333
Preiginition time
Prepurge time
Postignition time
Safety lockout time
Reset time after lockout
Reaction time on fl ame failure
Ambient temperature
Min detector current required (with fl ame)
Max perm. detector current (without fl ame)
5.3
Function LMO14/24
