Operation Description - baltur BGN 250P Manual De Instrucciones De Uso

OPERATION DESCRIPTION

The gas train supplied is composed of an ON/OFF safety valve and
a single stage slow opening main valve.
The gas flow adjustment in the first and second stage is carried
out by a streamlined butterfly valve (11) activated by the electric
servomotor (9). The movement of the air gate (10) is caused by the
rotation of the servomotor (9) through the lever and tie rod system
(3). For the adjustment of the air gate position according to the power
burned in the first and second stage, consult section: "IGNITION
AND ADJUSTMENT". If when the main switch (1) is closed, the
thermostats are closed, the voltage reaches the command and
control equipment which starts the burner (2).
This turns on the fan motor (3) for pre-ventilation of the combustion
chamber. At the same time the rotation of the control servomotor
(9) which brings the gas throttle (11) and the air gate (10), through
the action of leverage, in the opening position corresponding to the
second flame. The pre-ventilation phase occurs only with the air
gate in the second flame position. At the end of the pre-ventilation
phase, the gas butterfly valve and the air gate are returned to the
first flame position, then the ignition transformer (4) switches on and
the gas valves (5) open.
The presence of the flame, detected by the control device, permits
the continuation and completion of ignition, turning off the ignition
transformer. Then the second power stage occurs with the
progressive opening of the gas butterfly valve and the air gate at the
same time. When the demand for heat from the system is satisfied,
the boiler thermostat will intervene and shut down the burner. The
air gate through the rotation of the servomotor will reach the closed
position when in stand-by.
In the event that the control device does not detect the presence
of a flame, the equipment activates a "safety shut down" (7) within
3 seconds after the opening of the main gas valve. In "safety shut
down" mode the valves are closed again immediately. To release
the equipment from its safety position you have to press the release
button (8).
- safety ON/OFF valve.
- operating valve equipped with a membrane pressure regulator
(see specific instructions).
During first start-up a valve seal check is carried out by
i
the corresponding pressure switch in the pre-ventilation
phase.
For further details on equipment operation consult the
I
"QUICK GUIDE ON LME 7x... EQUIPMENT" supplied with
the burner.
Equipment or Safety
programmer time
s
LME 73.820A2 3
Pre-ventilation Pre-
time ignition
s s
30 6
0006081525_201112
1 Main switch on/off
2 Thermostat closing indicator light
3 Fan motor indicator light
4 Ignition transformer indicator light
11
Post- Opening time
ignition 1 stage valve and
st
2 stage valve
nd
s s
2.5 11
11 / 20
5 Gas valves indicator
light
7 Lock indicator light
8 Unlocking button
10
Air gate opening Air gate closing
stroke time stroke time
s s
12 12
9