Bentone BG 450-2, Installation And Maintenance Instruction

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39
Bentone
10.3 List of components
A1 Gas burner control
A3 Valve, leak tester, Dungs
VPS504
F1 Operating fuse
H1 Lamp, low capacity
H2 Lamp, high capacity
H3 Alarm signal 230 V
K1 Contactor
M1 Burner motor
M2 Damper Motor, L&S
SQN75.254.A21B
P1 Time meter, total operating
time
P2 Time meter, high capacity,
total operating time
S1 Operating switch
S2 Operating switch, stage 2
S3 Control thermostat
S4 Temperature limiter
S5 Micro switch for hinged door
S6 Control thermostat, stage 2
S7 Main switch
S8 Air pressure switch
S9 Gas pressure switch
Q1 Signal amplifier AGQ
R1 UV-Detector
T1 Ignition transformer
X1 Connection terminal board
X2 Earth terminal
X3 Plug-in contact, burner
X4 Plug-in contact, boiler
X5 Plug-in contact, stage 2,
burner
X6 Plug-in contact, stage 2,
boiler
Y1 Gas solenoid valve 1
Y2 Gas solenoid valve 2
Y3 Safety solenoid valve
10.3.1 Function LME...
1. Operating switch ON-Thermostat ON-Gas pressure switch
ON
A check that the air pressure switch
does not
indicate fan pressure
is carried out
2. Burner motor starts
A check that the air pressure switch indicates sufficient fan pressure
is carried out
3. The ignition spark is created
4. The gas solenoid valve is open
The gas is ignited. The ionisation electrode now indicates a flame
5. The safety time expires
The ignition spark ceases. The safety period ceases. If the spark is
missing or it disappears after this time limit, the gas burner control is
blocked
6. Operating position
7. Stop
The operation of the burner can now be stopped with the control
switch or thermostat
If the gas burner control is blocked
Red light in the gas burner control is lit. The burner is restarted by
pushing the reset button