Electrical Connections - Description Of The Operation - Description Of The Modulation Operation - baltur GI 1000 LX Manual De Instrucciones

ELECTRICAL CONNECTIONS
The three-phase or single-phase power supply line of
the minimum suitable size for the power absorbed by
the burner must be provided with fuse switch. In addi-
tion, according to the Standards, a switch on 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-tem-
perature elements. See the diagrams for the electrical
connections (line and thermostats).
BURNER CONNECTION TO THE GAS PIPING
After attaching the burner to the boiler, remembering
that the burner's blast-pipe must penetrate the com-
bustion chamber, connect it to the gas piping. It is
advisable to install, as close as possible to the burner, a
flange couple connection to allow the boiler's door to be
opened without difficulty and to permit burner disassem-
bly . Before closing this connector the air in the piping
should be carefully bled out with doors and windows
open. Before testing the burner, you must check the
gas piping is completely free from any leaks.
DESCRIPTION OF OPERATION
The attainable capacity variation field is, indicatively,
from 1 to 1/7 with respect to the maximum capacity
stated on plate.
Ignition is preceded, as provided for in the regulations,
by pre-ventilation of the combustion chamber.
The pre-ventilation stage for the combustion chamber
takes place with the air damper at the large flame po-
sition. At the end of the pre-ventilation stage, the air
combustion air dampers are brought back to the ignition
flame position. If the pressure switch for the pre-ventila-
tion air pressure shows sufficient pressure, the ignition
transformer is switched on and then the gas valves
(main and pilot) switch on. The quantity of gas (m
for the ignition flame can be adjusted with the air
damper servo motor (see 0002933490) and with the
flow adjuster of the two pilot light valves.
The flame then appears, detected by the control de-
Control box &
relative programmer
LFL 1.
Cyclic relay
Post-ignition
in seconds

CONTROL BOX SPECIFICATIONS
Safety time
in seconds

Time between 1st flame & mo-
dulation start in second
1
0006080870_00709
vice (UV photo-electric cell) that permits completion of
the ignition stage with the switching off of the ignition
transformer.
The programmer relay passes the lock position and
supplies voltage to the main valves which then open.
The pilot circuit switches off after the main valves have
opened. The amount of gas supplied with the large flame
must be adjusted with the air damper servo motor (see
diagram 0002933490). If there is no ignition flame, the
equipment carries out an automatic system safety stop.
If there is such a "safety stop", the valves immediately
close again. To release the equipment from the safety
lock position, press the release button on the display.
Note: To adjust the gas valves see the specif-
ic instructions in the following pages.
The air damper is worked by an electric motor
(see specific instructions on the following pages).
When the damper goes to its fully closed posi-
tion, the burner will stopped by the action of the
thermostat.
DESCRIPTION OF CONTINUOUS
MODULATION FUNCTION
See the instructions for gas valves model "SKP 75 ..."
The delivery adjustment field is, indicatively, from 1 to
1/7.
When the burner is on at minimum capacity, and if the
modulation probes permit (adjusted for a temperature
or pressure value greater than that in the boiler), the
air adjustment servo motor starts to rotate to cause a
gradual increase in the supply of combustion air, and
consequently of gas, until the maximum supply for which
the burner has been adjusted is reached. The increase
of fan air pressure is detected by the gas valve sensor,
model "SKP 75...", which gradually adjusts the gas
supply to the change in air pressure. The burner stays
at maximum delivery until the temperature or pressure
reaches a level high enough to cause the modulation
probe to turn the air adjustment servo motor in the op-
posite direction.
The backward rotation and hence reduction in the sup-
ply of air and gas, takes place at short time intervals.
3 /h)
This enables the modulation system to balance the
amount of heat supplied to the boiler with what it loses
to the user parts. The modulation probe for the boiler
detects demand changes and automatically adjusts the
supply of combustion air by switching on the air adjust-
Pre-ventilation time with
shutter open in seconds
1,5
Switch off pilot light after
opening main valves in
seconds

41 / 107
Pre-ignition
in seconds
6
Time between main valves
opening and switching on of
modulation in seconds
1