baltur TBG 1100 MC, Instruction Manual For Installation, Use And Maintenance

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OPERATING DESCRIPTION
The gas train supplied is composed of an ON/OFF safety valve and a
single stage slow opening main valve.
At the end of pre-ventilation, the gas throttle and the air damper are
returned to the ignition position, then the ignition transformer turns on
and the gas valves open.
Then passing on to the second stage of power through the progressive
opening of the gas throttle and the air damper at the same time.
At the moment in which the demand for heat from the system is
satisfied, the boiler thermostat will intervene and shut down the boiler.
The air damper, through the rotation of the servomotor, will reach the
closed position when inactive.
In the event that the control device does not detect the presence of a
flame, the control box activates a “safety shut down” (10)(H2) within 3
seconds from the opening of the main gas valve. In “safety lock-out”
mode the valves are closed again immediately.
To release the equipment from its safety position, press the release
button (10)(S2)
MODULATION OPERATION DESCRIPTION
When the burner is ignited at the minimum flow-rate, if the modulation
probe allows it (adjusted to a temperature or pressure which is greater
than that present in the boiler) the air adjustment servomotor begins
to operate,
• in a clockwise direction the air flow increases;
• anticlockwise rotation: the air flow decreases.
causing a gradual increase in the combustion air and fuel flow, until it
reaches the maximum flow setting of the burner.
The burner remains in the maximum flow position until the temperature
or pressure is high enough to trip the modulation probe, which reverses
the rotation of the air adjustment servomotor.
Gas and air flow increase or decrease occurs at short time intervals.
With this procedure, the modulation system attempts to balance
the amount of heat supplied to the boiler with respect to the system
requirement.
The modulation probe installed on the boiler measures any request
variation and automatically adjusts fuel and combustion air supply, by
starting the air/gas adjustment servomotor and increasing or reducing
rotation as necessary.
If the threshold value (temperature or pressure), to which the complete
shut-down device (thermostat or pressure switch) is set, is reached
even with minimum gas and air output, the burner will be shut down
when the device is triggered.
When temperature or pressure returns below the shut-down device
tripping value, the burner is activated once again according to the
program described in the previous section.
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0002937650
8
MV
GAS
1 3 9 10
2
1
6 4
5
sinottico_TBG1
100MC
1 ON / OFF main switch
2 Voltage warning light
3 AUTOMATIC - MANUAL operation selector
4 Ignition transformer warning light
5 Gas valve warning light
6 Fan motor thermal relay activation warning light (if installed)
9 MIN - MAX power selector
10 Reset button with lock warning light
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