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N°0002935430
0002935210) and set the air damper opening in the 2nd stage
at a position considered suitable for the desired supply of fuel
8) Now connect the burner again; it will start and automatically
switch to the 2nd flame according to the present program.
9) With the burner operating with the 2nd flame, acting as indicated
in point 7 above, adjust the amount of air necessary to ensure
an efficient combustion with the screw mentioned under item 7.
Combustion test should be made using appropriate instruments.
Make the regulation so as to obtain a certain amount of carbon
dioxide (CO
2
) in the smoke, varying from min. 10% to max. 13%
with a smoke number not exceeding 2 (Bacharach scale).
CHECKS
After starting up the burner, check the safety devices (photoresistance,
block, thermostats).
1) The photocell is the flame control device and so it should trip
if the flame extinguishes during operation (this check should
be made after at least 1 minute from lighting up).
2) The burner should be capable of blocking itself and
remain so when a normal flame does not come on during
start-up cycle and within the preset on control box.
The “lock-out” causes the motor and the burner to stop
immediately and corresponding “lock-out” warning lamp lights
up.To check the function photoresistant-cell and lock-out
system proceed as follows:
a) Start up the burner.
b) After at least one minute, remove the photo-cell from its
seat and pull it out and simulate flame failure by covering
the photo-cell (use a rag to close the window in the photocell
support).The burner flame should go to lock-out.
c) Keep the photo-cell in the dark and the burner will start again,
but the photo-cell does see the light and the burner goes to
lock-out within the time preset by control box. The control
box can be reset only manually by pressing the appropriate
push-button.
3) To check the thermostat efficiency, run the burner until the
water in the boiler reaches a temperature of at least 50 °c
and then turn the thermostat control knob to reduce the
temperature until an opening click is heard and simultaneous
stopping of the burner. The thermostat should trip within a
maximum tolerance of 5 to 10 °C in respect to the control
thermometer (boiler thermometer); if not, change the setting
on the thermostat scale to match that of the thermometer.
Legend:
1- Diffuser
2- Deflector disk
3- Nozzle holder
ELECTRODES/IONISATION PROBE ADJUSTMENT
DIAGRAM
After having installed the nozzle, check the correct position of the
electrodes and disk according to the following levels. It’s adviseable
to check levels after every intervention on head.
N.B. To prevent damage to the support effect nozzle assembly/
disassembly tasks with the aid of a wrench and counter-
wrench.
RECOMMENDED NOZZLES:
DANFOSS S 60° (TBL 45P)
DANFOSS S 45° (TBL 60P)
Model
A
B
C
D
E
TBL 45P
1 ÷ 2
21
7
5
6,5
TBL 60P
1 ÷ 2
21
7
5
6,5
4- Ignition electrodes
5- Nozzle
N.B. For narrow combustion chambers, it is recommended that
nozzles with a 45° pulverisation agle be used
Содержание TBL 45P
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