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0006081544_201907
OPERATION DESCRIPTION WITH
GASEOUS FUEL
After activating switch "1”, if the thermostats are on, the voltage
reaches the command and control equipment (LED 2 switches on)
which starts operating.
The fan motor is thus switched on to carry out the pre-ventilation
of the combustion chamber, at the same time the air damper
control servomotor moves to the opening position corresponding
to the maximum power setting.
At the end of the pre-ventilation phase, if the air ventilation control
pressure switch has found that there is sufficient pressure, the
ignition transformer will come on, and two seconds later the safety
and main gas valves will open.
We can specify that:
•
The main valve is a slow opening single-stage valve
•
The safety valve is an ON/OFF valve
•
The air damper is activated by a dedicated electric servomotor,
keep in mind that when the burner is locked out because the
thermostat is tripped, the servomotor returns the air damper to
the closed position.
The presence of the flame, detected by its control device, allows
to continue and complete ignition, by disconnecting the ignition
transformer.
If there is no flame, the appliance shuts down in “safety lock-out”
mode (lock warning light 7) within three seconds of the opening
of the main valve. In safety lock-out mode the valves are closed
again immediately. To release the equipment from this safety
position, press button "8" on the control panel.
3 6
4
5
2
7
9
1
8
10
Displa
y_TBML_80pn
1 ON / OFF main switch
2 Voltage warning light
3 Fan operation warning light
4 2nd stage LED
5 Transformer ON led
6 1st stage operation warning light
7 Equipment shut-down warning light
8 Equipment release button
9 Fuel loading button
10 Fuel selector switch
Содержание TBML 200 MC
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