baltur btg 15 me, Instruction Manual For Installation, Use And Maintenance

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To ensure correct operation of the air pressure switch you must, with
burner on and in 1st stage, increase its regulation value until the burner
triggers and then it immediately “locks-out”.
To unblock the burner, press the special pushbutton and return the
pressure switch regulator to a sufficient value in order to measure the
air pressure existing during the pre-ventilation phase.
The gas pressure control switches (minimum and maximum) prevent
the burner from operating when gas pressure does not lie between the
expected range.
Adjustment of minimum and/or maximum pressure values on the pres-
sure switches must be performed when testing the burner, on the basis
of the pressure measured in each case.
The triggering (opening of the circuit) of any of the pressure switches
when the burner is running (flame on) locks out the burner immediately.
When first switching on the burner it is essential to check that they
work properly.
This test should also be conducted with the burner already on. The
apparatus should shut down immediately when the ionisation cable is
disconnected.
Verify the flame detector operation as follows:
• disconnect the wire coming from the ionisation electrode;
• start the burner;
• the equipment will complete the control cycle and after two se-
conds will lock out the burner due to the lack of ignition flame;
• switch off the burner;
• reposition the photocell;
• This test should also be conducted with the burner already on;
when extracting the photocell from its seat, the apparatus should
shut down immediately.
• check the efficiency of the thermostats or boiler pressure switches
(they should shut down the burner when triggered)
• Check the efficiency of the thermostats or boiler pressure swi -
tches (they should shut down the burner when triggered).
CAUTION / WARNINGS
Check that the ignition takes place properly. If the passage
between the head and the disk is closed, the speed of the (air/
fuel) mix may be so high that ignition is difficult. Open the gas
valve speed regulator (if fitted) bit by bit to a position in which
ignition takes place correctly, and accept this as the final position.
IONISATION CURRENT
The maximum ionisation current value required for a correct operation
of the equipment is indicated in the wiring diagram.
To measure ionisation current, connect a microammeter in series with
the ionisation electrode cable as shown in the figure.
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