Electrical Connections - baltur BTG 20 LX Mode D'emploi

MEASURING THE PRESSURE IN THE COMBUSTION CHAMBER
If the hole in the door is too small to allow the hose to pass and the door has no flame inspection window
it will be necessary to make a Ø 12 hole at the site of the 1/4" connection for the insertion of the pressure
take up hose in the combustion chamber (provided with the burner).
Pressure transmission pipe in combustion chamber
Pressure take-off in
combustion chamber

ELECTRICAL CONNECTIONS

The three-phase or single-phase power supply line of the suitable size for the power absorbed by the burner
(minimun section 1,5 mm
2
the burner supply line is required, arranged outside the boiler room in an easily reachable position.
All electrical lines must be protected with a flexible sheath, be firmly fixed and pass far from high-temperature
elements. See the diagrams for the electrical connections (line and thermostats).
DESCRIPTION OF THE OPERATION
In the burner, by closing the main circuit breaker if the thermostats are off, the control box is supplied. The fan motor
is thus enabled, and its operation determines the pre-ventilation of the combustion chamber. At the same time, the
combustion air damper control motor opens the air damper in the position corresponding to the maximum set.
The combustion chamber pre-ventilation step thus occurs with air damper in the high flame position. At the end of
the pre-ventilation step, the combustion air damper is restored to the low flame position. If the ventilation air pressure
control switch detects a sufficient pressure, the ignition transformer is started and the gas valves (main and safety)
are opened. The burner starts. The flame is thus present and, detected by its control device, it allows continuing and
ending the ignition step by disabling the ignition transformer and enabling the air damper control motor, which
gradually sets the same to the high flame position. The quantity of gas supplied with the high flame must be
regulated by operating on the air damper control servomotor (see dr. n° 0002934320). In case of absence of ignition
flame, the control box stops in "safety lock". In case of "safety lock" the valves are closed immediately.
To unlock the control box from the safety position, press the luminous button on the control box.
Note: For the gas valve regulation, see the specific instructions in the following pages.
The air damper is actuated by a special electrical motor (see specific instructions in the following pages),
note that as the burner is shut down by the thermostat enable, the air damper is restored to the total closure
position by the control motor.
TWO STAGE PROGRESSIVE NATURAL GAS BURNERS
Pressure detection pipe connection nipple in combustion chamber
) must be provided with fuse switch. In addition, according to the Standards, a switch on
Burner flange
N° 0002934330
REV.:22/10/2004
Plate and refractory
wall hole to be
drilled to Ø 12
27