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Start-up, calibration and operation of the burner
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20062968
5.3
Burner start-up
Feed electricity to the burner via the disconnecting switch on the
boiler panel.
Close the thermostats/pressure switches and turn the switch of
Fig. 34 to position
“LOCAL”
.
5.4
Final calibration of the pressure switches
5.4.1
Air pressure switch
The air pressure switch is connected in differential (see Fig. 35)
and is activated by both the negative pressure of the air intake
and the air pressure from the fan.
Adjust the air pressure switch after having performed all other
burner adjustments with the air pressure switch set to the min.
of the scale.
With the burner operating at low fire, adjust the pressure switch
by slowly turning the relative knob clockwise until the burner
locks out.
Then turn the knob counter-clockwise about 20% of the set point
and start-up the burner again to ensure the set point is correct.
If the burner locks out again, turn the knob counter-clockwise a
little bit more.
DANGER
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
check the electrical wiring.
WARNING
When the burner starts, check the direction of the
motor rotation, as indicated in Fig. 34. As soon as
the burner starts up, look at the cooling fan of the
fan motor and check it is rotating anticlockwise.
If this is not the case:
place the switch of Fig. 34 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 inverter output.
WARNING
For the start-up procedure and the parame-
ters calibration, refer to the specific instruc-
tion manual of the LMV37... electronic cam
supplied with the burner.
Fig. 34
D9313
Fig. 35
20048352
Summary of Contents for RS 120/EV LN
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