baltur TBG 45, Installation, Use And Maintenance Instruction Manual

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ENGLISH
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0006081329_201612
• Open the manual gas flow rate regulator for the second flame
(main flame) to the necessary extent.
• Now switch the burner on again, turning off the main and control
panel switch. The burner switches on and automatically swit -
ches on the second flame (main flame). Verify the combustion
parameters using the appropriate means and, if necessary, cor -
rect the gas and air output, as indicated in points 4 and 5.
• Use the adjuster to set the correct flow for the second flame as
required for the specific case. You must not keep the burner
running if the flow rate is greater than the maximum amount
permitted for the boiler, or there is a risk it could be damaged.
It is therefore best to stop the burner immediately after the two
meter readings.
• Subsequently, with the burner at maximum output required by
the boiler, check the combustion with the special instruments
and if necessary change the adjustment previously carried out
(air and possibly gas) with just the visual check (CO2 max. = 10
% O2 min =3 % - CO max. = 0.1%).
• The air pressure switch prevents the opening of the gas valves
if the air pressure is not the foreseen one. The pressure swit-
ch must therefore be adjusted to intervene closing the contact
when the air pressure in the burner reaches a sufficient value.
If the air pressure switch does not detect pressure greater than
that calibrated, the equipment runs through its cycle but does
not switch on the ignition transformer and does not open the
gas valves and so the burner “locks-out”. To ensure correct
working of the air pressure switch, you must, with burner on
and with first flame only , increase the regulation until it is
triggered and immediately locks-out the burner. To release the
burner, press the release button and adjust the pressure switch
to a sufficient level to detect the existing air pressure during the
pre-ventilation stage.
• The gas control pressure switch (minimum) prevents burner
operation when gas pressure is not the foreseen one. It is clear
from the specific function of the pressure switches that the
control pressure switch for minimum pressure must make use
of the contact that is closed when the pressure switch detects
pressure greater than that for which it is regulated.
• The adjustment of the minimum gas pressure switch must the -
refore be carried out when the burner is started up, in accor -
dance with the pressure that is found at the time. The triggering
(i.e. the opening of the circuit) of any of the pressure switches
when the burner is running (flame on) causes the burner to stop
immediately. Upon first switching on the burner it is essential to
check for the correct operation of the pressure switch.
• Check for the triggering of the flame detector (ionisation elec -
trode). Disconnect the jumper between terminals 30 and 31 on
the printed circuit board and switch on the burner. The equip -
ment must run through its cycle completely and, three seconds
after the ignition flame has formed, it must “lock-out”. This
check must also be carried out when the burner is already on.
Disconnecting the 30 and 31 jumper, the equipment must im -
mediately go into “lock-out”.
• Check the efficiency of the thermostats or boiler pressure swit -
ches (they should shut down the burner when triggered).
CAUTION / WARNING
Check that the ignition takes place properly. In the event
that the mixer is too far forward, it may happen that the
outgoing air speed is so high that ignition is difficult. If this
happens, the mixer must be gradually shifted back until it is
in a position in which ignition occurs normally, and this new
position can be regarded as the final position. Remember
that with a small flame, it is better to limit the amount of
air to the amount strictly indispensable to ensure safe
ignition even in the most difficult cases.