baltur TBML 450LX ME, Instruction Manual For Installation, Use And Maintenance, Page: 74 / 116

DESCRIPTION OF OPERATION WITH LIQUID
FUEL
The burner operates fully automatically: it is activated by switching on
the main switch and the control panel switch.
Burner operation is managed by command and control electronic de -
vices.
The “lock-out” position is a safety position that the burner automatical -
ly assumes when a safety-related fault occurs.
Make sure that there are no faults in the heating plant before re-acti -
vating the burner by 'resetting it'.
The burner may stay in the lock position without any time limits.
To reset it, press the specific button (RESET).
Lock-outs may also be caused by temporary faults; in these cases if it
is reset, the burner will start up without any difficulties.
If lockings continue to occur (3-4 times), do not continue with the ope-
ration and, after having checked that the fuel arrives to the burner, ask
the intervention of the after-sales service in your area.
The burner is fitted with an electronic cam controlled by a micropro -
cessor for intermittent operation, and for the control and monitoring of
the blown air gas burners.
Electronic modulation achieved by means of two step air gas regu -
lation motors.
The modulating operation allows the transition from the first stage
(minimum output) to the second stage (maximum output) and vice
versa. It is progressive in terms of both amount of combustion air let
in and amount of output fuel, continuously adjusting to the specific
system requirements.
If the temperature or pressure probe is set to a temperature or pres -
sure higher than that in the boiler, the adjustment servomotor is
enabled, gradually increasing the fuel and combustion air output up
to the maximum level the burner is set to.
The burner remains in maximum supply position until the temperature
or pressure modulation probe reaches the value set for the boiler.
Now the modulation servomotor starts gradually reducing fuel and
combustion air supply until the minimum value.
Now the modulation servomotor starts gradually reducing fuel and
combustion air supply until the minimum value.
If, even with minimum supply the temperature or pressure (in case
of steam boiler) of modulation probe intervention, the burner stops.
When the temperature or pressure in the boiler decreases, the modu -
lation probe detects a variation in boiler load and automatically reque -
sts the fuel and combustion air supply regulation to the servomotor.
With this procedure the burner changes the fuel and combustion air
supply according to the amount of heat required by the boiler.
CAUTION / WARNINGS
The electronic cam controls the burner, activating the servomo -
tor of the combustion air, of the gas, and the fan motor inverter,
if present, according to a curve that has ten set points.
The burner is fitted with a valve tightness control device. To better
understand the operation of the electronic cam, read the specific in -
structions in the manual provided carefully.
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