Methane Gas Ignition And Adjustment - baltur TBG 55 Manual De Instrucciones

METHANE GAS IGNITION
AND ADJUSTMENT
NOTE: The burner has a switch to
pass manually from the 1st to the 2nd
stage.
1) C heck that there is water in the
boiler and that the gate valves for
the system are open.
2) Check, with complete certainty,
that the discharge of combustion
products can take place freely
(boiler and flue gates open).
3) C heck that the voltage in the power
supply to be connected correspon
ds with that required by the burner
and that the electrical connections
(motor and main line) are set up
for the available voltages. Check
that all the electrical conection
is carried out on site are correct
and in accordance with our wiring
diagram. Avoid working with the
second flame: position the 1st and
2nd stage switch on the printed
circuit in the 1st stage position
for burners TBG 150 P-210P;
for the burner TBG 55 disconnect
the wire powering coil
Y2 from terminal 5 of the a
terminal board on the printed circuit.
4) A djust air to the ignition flame: for
burners TBG 55 P-210P, with
electric motor electric, following the
instructions in the technical speci
fications in the following pages; in
the case of burner TBG 55 with
manual adjustment, adjust the air to
the second flame following
the instructions on page 41.
5) C arefully manoeuvre the gas adju
stment device valve to open, for the
amount presumed necessary,
the first flame flow adjuster
(see the instructions for the
two-stage gas valve for
the model installed on the burner).
If necessary, of course, open
the safety valve flow adjuster
completely if there is one.
6) W ith the switch on the burner panel
at the position "0" and the main
switch on, check, closing
the contactor manually, that the
motor rotates in the right direction, if
necessary swap the two power
cables for the motor around to
change the direction of rotation.
7) N ow switch on the cotrol panel
switch (see page.15). The
control equipment thus receives
voltage and the programmer
causes the burner to switch on as
described in the chapter "descrip
tion of working". During the preven
tilation stage you must check that
the air pressure control switch car
ried out the exchange (from the clo
sed position without
pressure detection it must go to the
closed position detecting air
pressure). If the air pressure switch
does not detect sufficient pressure
(does not carry out the exchange)
the ignition transformer is not
switched on, nor are the gas valves,
and so the equipment is stopped in
its "lock-out" mode. On first
switching on repeated "lock outs"
may occur due to:
a) the gas piping not being freed
of the air sufficiently
and so the gas quantity is
not enough to provide a stable
flame.
b) "lock out" with flame present
maybe caused by instability
in the ionisation area,
due to an incorrect air/gas
ratio. This can be reme
died by varying the quantity of
air and/or gas until
the right ratio is found.
The same problem may
be caused by incorrect air/gas
distribution in the combustion
head. This can be remedied with
the combustion head adjustment
device by closing or opening
further the air passage between
combustion head and gas
diffusor.
c) It may happen that the ionisation
current is interfered with by the di
scharge current of the ignition
transformer (the two currents
have a common path on the
burner's "mass") so the burner gets
locked out due to insufficient ionisa
tion This can be remedied
by inverting the supply (230V side)
of the ignition transformer (swap
ping the two wires carrying volta
ge to the transformer). This problem
may also be caused by an insuf
ficient "ground connection" from the
burner's casing.
8) With the burner on at minimum you
must carry out an immediate visual
check on the extent of and appea
rance of the flame, performing the
necessary corrections with the gas
6 / 71
0006081041_200708
and air supply regulators (see
points 4 and 5). Subsequently
a check is carried out on the
quantity of gas supplied, by reading
the meter. If necessary the gas
supply and the corresponding
combustion air can be corrected
as previously described (points 4
and 5). Subsequently the
combustion is checked with the
special instruments. For a
correct air/gas ratio you must
find a carbon dioxide (CO
for the methane that is at least 8
2
% or O = 6% at minimum
burner supply up to an optimal va
lue of 10 % or O
mum supply.
It is essential to check, with a suita
ble instrument, that the percentage
of carbon monoxide (CO) present
in the fumes does not exceed the
limit set by regulations at the time of
installation."
9) Carry out repeated checks that
the first flame supply is correct after
adjusting the working with the first
flame, switch off the
burner, open the master switch
and close the electric circuit
that controls the switch on of the
second flame: turn the 1st
and 2nd stage switch on the
printed circuit to the 2nd stage
position for the burners TBG
150 P-150P; for the burner TBG 55
reconnect the wire powering the coil
Y2 to terminal 5 of the terminal
board on the printed circuit.
10) Open the manual regulator for the
gas supply for the second flame
(main flame) to the presumed
necessary quantity.
11) Now switch the burner on again,
closing the master switch
and that on the control panel. The
burner switches on and automa
tically switches on the second
flame (main flame). Carry
out an immediate visual che
ck on the extent of and
appearance of the flame, perfor
ming the necessary correc
tions with the gas
and air supply regulators as
indicated in points 4 and 5.
12) Use the adjuster to set the correct
flow for the second flame as requi
red for the specific case. You
must not keep the burner running if
the capacity is greater
than the maximum permitted
amount for the boiler, or there is a
risk it could be damaged. It is
) value
2
2
= 3% for maxi