Starting Up And Regulation With Methane Gas - baltur BGN 200P Manual De Instrucciones

STARTING UP AND REGULATION WITH METHANE GAS

NOTE: The burner in equipped
with switch (3) to change normally
from 1 stage to 2 stage.
st nd
1) Check that there is water in the
boiler and that the system's gate
valves are open.
2) Check, with absolute certainty,
that the discharge of combustion
products can take place freely
(boiler and chimney lock-gates
should be open).
3) Make sure that the voltage of the
electric line to which the burner
is to be connected corresponds
to that required by the burner
and that the electrical connec-
tions (motor and principle lines)
have been prepared to match the
voltage rating available. Cheek
that all the electrical connec-
tions carried out on the spot are
in accordance with our electric
wiring diagram. Open the 2nd
flame thermostat circuit. Do not
connect the thermostat when
regulating the let flame; in this
way the 2nd flame will not be
inserted.
4) Regulate the air for the ignition
flame. The burner is fitted with
an electric servomotor, which
commands the air shutter (see
specific instructions for its regula-
tion in the following pages).
5) By operating the, regulating
devices of the gas valves open,
to the amount considered nec-
essary, the flow regulator of the
1st flame (see instructions with
regard to specific two-stage gas
valve model fitted on the burner).
Obviously, if there is a flow regula-
tor for the safety valve, it should
be opened completely too.
6) With the switch (1) on the burner's
control panel in the "0" position
and the main switch inserted
check, by manually closing the
relay, that the motor rotates in
the right direction. If it does not
exchange the places of the two
cables of the motor's supply line
in order to invert its sense of
rotation.
(FOR L.P.G. VERSION SEE THE RELATIVE CHAPTER)
SCHEMATIC DIAGRAM OF TWO-STAGE GAS BURNER
1 BALL VALVE
2 VIBRATION DAMPER JOINT
3 GAS FILTER
4 PRESSURE REDUCER OR STABILIZER
5 PAIR OF FLANGES
6 MINIMUM AND MAXIMUM PRESSURE
SWITCHES
7 RELIEF VALVE
8 SEAL CONTROL DEVICE AND RELATI-
VE DW PRESSURE SWITCH
7) Now insert the switch (1) on the
command panel. The control
box receives voltage in this way
and the programmer turns on
the burner as described in chap-
ter "Description of Operations".
During the pre-ventilation phase
check that the air pressure switch
effects a changeover (it should
pass from a closed position with-
out measurement of pressure to a
closed position with measurement
of air pressure). If the air pressure
switch does not measure suf-
ficient pressure (it will not effect
the changeover) and neither the
ignition transformer nor the gas
valves will be inserted and the
control box will go to "shut down".
To unlock press the lock-out
release button (2). Successive
"shut downs" can occur during
the first ignition phase due to the
following reasons:
a) The gas pipeline has not been
sufficiently expelled of air and
therefore there is not enough
gas present to permit a stable
flame.
b) A "shut down" with flame pres-
ence may be caused by flame
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9 TWO STAGE MAIN FLAME VALVE
(CLOSED – 1 STAGE – 2
st nd
10 AIR DAMPER CONTROL
SERVOMOTOR
11 AIR PRESSURE SWITCH
12 COMBUSTION HEAD
13 AIR REGULATION DAMPER
14 IGNITION FLAME VALVE (PILOT)
WITH SUPPLY REGULATOR
D DISTANCE BETWEEN PRESSURE
STABILIZER AND FLANGES
(about 1.5 – 2m).
instability in the ionization
zones due to an incorrect air/
gas ratio. This can be remedied
by varying the quantity of air
and/or gas delivered in such a
way as to find the correct ratio.
It could also be caused by an
incorrect distribution of air/gas
in the combustion head. Cor-
rect this by operating the com-
bustion head regulating device
(close more or open more the
air passage between the head
and the gas diffuser).
c) It could happen that the ioni-
zation current is held up by
the discharge current of the
ignition transformer (the two
currents have to run the same
course on the burner's earth)
and so the burner goes to
"shut down" due to insufficient
ionization. This can be rem-
edied by inverting the input
(230V side) of the ignition
transformer (change the places
of the two wires that take
voltage to the transformer).
A shut down can also be
caused by the burner's casing
not being properly grounded.
STAGE)