Description Of Operations; Two Stage Gas Burner - baltur TBG 85 P Manual De Instrucciones

DESCRIPTION OF OPERATIONS

Closing the switch 1, if the thermostats are closed, the voltage
reaches the command and control equipment (led 2 start-up)
which starts operating. The fan motor is thus switched on (LED 3)
to carry out the preventilation of the combustion chamber, while
the air damper control servomotor moves to the opening position
corresponding to the second stage. Therefore, the pre-ventilation
takes place with the air damper in second stage position.
At the end of the preventilation stage the air damper goes back to
the first stage position, then the ignition transformer is switched on
(LED 4) and, after 2 seconds, the gas valves (LED 5).
We can specify that:
• The main two-stage valve has a device to adjust gas supply to
the first (LED 5) and second stage (LED 6).
• The safety valve is an ON/OFF valve.
• The air shutter 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 lock to the
closed position.
The flame's presence is detected by control device and allows the
equipment to proceed to the ignition stage with the switching off of
the ignition transformer. Subsequently the second stage switches
on (increase of combustion air and opening according to the main
second stage valve LED 6)
If there is no flame, the equipment stops at "safety lock-out" (LED
7) within 3 seconds from the first stage opening of the main valve.
In "safety lock-out" mode the valves are closed again immediately.
To release the equipment from its safety position you have to press
button 8 on the display panel.
Equipment or Safety Pre-ventilation
programmer time
s
LME 22.331A2 3
LME 22.233A2 3
Pre-ignition Post - ignition
time
s
s
30 2
30 2
11 / 24
0006081041_201401
1 Main switch on/off
2 Thermostat closing indicator light
3 Fan motor indicator light
4 Ignition transformer indicator light
5 1st stage gas valve light
6 2nd stage gas valve light
7 Lock indicator light
8 Unlocking button

TWO STAGE GAS BURNER

It is normally not advisable to connect a burner working on a boiler
for heating water for two-flame working. In this case the burner can
also work for long periods of time with only one flame. The boiler
is insufficiently loaded and so steam comes out at temperatures
that are too low (less than dew point) giving rise to the presence
of condensation water in the flue. When the two-flame burner is
installed on a boiler for the production of hot water for heating, it
must be connected in such a way as to work normally with both
flames completely stopping, without changing to the first flame, when
the preset temperature has been reached. For this type of working
the thermostat for the second flame is not installed and a direct
connection is made (jumper) between the equipment's terminals.
Time for 1 flame valve
st
and 2 flame valve
nd
s
opening
s
2 11
2 11
Air shutter Air shutter closing
opening cycle time cycle time
s s
12 12
30 30