Air Adjustment On The Combustion Head Upon Burner Start-Up; Ignition And Adjustment - baltur TBG 120 P Manual De Instrucciones De Uso

AIR ADJUSTMENT ON THE
COMBUSTION HEAD UPON
BURNER START-UP
The combustion head has an adjustment device that allows the air
passage between the disk and the combustion head to be opened
(move backward) or closed (move forward). By closing the passage,
it is thus possible to obtain a high pressure upstream of the disk also
for low flow rates. The high speed and turbulence of the air provides
for its greater penetration into the fuel and therefore for an excellent
mixture and flame stability. High air pressure upstream of the disk
may be necessary to prevent flame fluctuations, this is particularly
essential when the burner works on the combustion chamber that
is pressurized and/or at a high thermal load.
Check that the combustion head is centred with respect to
the disc. An imperfect centring could cause a bad combustion
and overheating of the head with its subsequent rapid
deterioration.
The adjustments are indicative only; position the combustion
head according to the characteristics of the combustion
chamber.
BURNER X
TBG 120P 17÷ 54
TBG 150P 17÷ 36
TBG 210P 14÷ 51
X= combustion head-disk distance; adjust the distance X following
the indications below:
a) slacken screw 1
b) turn screw 2 to position the combustion head 3, referring to index 4.
c) adjust the distance X between minimum and maximum according
the indications in the table.
Value indicated by index 4
1 ÷ 5
1 ÷ 3.2
1 ÷ 5
13 / 20
0006081522_201306

IGNITION AND ADJUSTMENT

1) Check that there is water in the boiler and that the system gate
valves are open.
2) Make absolutely sure that the products of combustion can be
released freely (boiler and flue gates must be open).
3) Check that the voltage of the electrical line corresponds to that
required by the burner. Electrical connections (motor and main
line) must be prepared for the voltage available. Check that all
electrical connections made on-site are performed correctly as
shown in the wiring diagram. To prevent ignition of the second flame,
turn the 1 and 2 stage switch on the printed circuit to the 1
st nd
stage position.
4) adjusting the power when switching on for the first time
- position the gas flow adjustment cam to the first flame on the
electric servomotor to an opening angle approximately between
15° and 20° (0002936820). If it exists, open the safety valve
flow regulator completely.
check that the cam V angle is greater than cam III by 5° /
10°.
- Now switch on the switch (1). The control equipment thus
receives voltage and the programmer causes the burner
to switch on as described in the chapter "OPERATION
DESCRIPTION". During pre-ventilation, make sure that the
air pressure control switch changes its status (from the closed
position without pressure measurement to the closed position
with pressure measurement). If the air pressure switch does
not detect sufficient pressure, the ignition transformer (4) is not
switched on, nor are the gas valves (5), and so the equipment
is stopped in "lock-out" (7) mode.
- On first switching on repeated "lock outs" may occur due to:
a) The gas piping not being freed of air correctly and so there is
not enough gas to provide a stable flame.
b) "lock out" with flame present may be caused by instability in
the ionisation area, due to an incorrect air/gas ratio.
c) Correct the air flow in the first stage acting on the screw/
screws (13), corresponding to the bearing (13).
- clockwise rotation: the air flow increases,
- anti-clockwise rotation: the air flow decreases.
Proceed with the air adjustment until a position is
found which allows ignition without blocking.
d) It may happen that the ionisation current is interfered with
by the discharge 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 ionisation. Invert the
power supply (230V side) of the ignition transformer.
st