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5.4
Burner start-up
Feed electricity to the burner via the disconnecting switch on the
boiler panel.
Close the thermostats/pressure switches, set the parameters on
the RWF 40 regulator.
Please refer to the specific manual for this operation.
Turn the switch to position "ON" (Fig. 42) and turn the switch of to
position "LOCAL" and turn the switch to position "OIL" for oil op-
eration and "GAS" for gas operation.
Make sure that the lamps or testers connected to
the solenoids, or indicator lights on the solenoids
themselves, show that no voltage is present. If volt-
age is present, stop the burner immediately and
DANGER
check the electrical wiring.
When the burner starts, check the direction of the
motor rotation, as indicated in Fig. 42. As soon as
the burner starts up, look at the cooling fan of the
fan motor and check it is rotating anticlockwise.
WARNING
If this is not the case:
place the switch of Fig. 42 in position "OFF"
and wait for the control box to carry out the
switch-off phase;
disconnect the electrical supply from the
burner;
invert the phases on the three-phase power
supply.
NOTE:
for further information, please refer to the specific instruction
of the control box.
5.4.1
Adjusting gas/air delivery
Move slowly towards the maximum output (butterfly gas valve
completely open);
adjust the required maximum output with the gas pressure sta-
bilizer;
adjust the combustion parameters with the air servomotor and
store the maximum combustion point;
complete the procedure slowly, synchronizing the combustion
with the two servomotors and storing the different setting
points.
For the start-up procedure and the parame-
ters calibration, refer to the specific instruc-
tion manual of the LMV37... electronic cam
WARNING
supplied with the burner.
5.4.2
Adjusting oil/air delivery
Switch to the light oil operation.
During the ignition, move slowly with an approximate adjust-
ment to the oil servomotor at maximum 90°.
Adjust the maximum pressure on the return nozzle throught
the "nut and lock-nut" 5)(Fig. 15).
Adjust the combustion parameter with the air servomotor and
store the maximum combustion point.
Complete the procedure slowly, synchronizing the combustion
with the two servomotors.
Store the different setting points. ù
Start-up, calibration and operation of the burner
31
D10626
GB
LO CAL
O N
O FF
O I L O FF G AS
Fig. 42
REM O TE
20031446
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