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5.4
Adjustments before first firing (gas operation)
Ensure that the gas supply company has carried out the sup-
ply line vent operations, eliminating air or inert gases from the
piping.
Slowly open the manual valves situated upstream of the gas
train.
Adjust the minimum gas pressure (Fig. 44) switch to the start
of the scale.
Adjust the maximum gas pressure switch (Fig. 43) to the end
of the scale.
Adjust the air pressure switch (Fig. 41) to the start of the scale.
Purge the air from the gas line.
Fit a U-type manometer (Fig. 39) to the gas pressure test point
on the sleeve. The manometer readings are used to calculate
the MAX. burner power using the diagram on page 26.
Before starting up the burner it is good practice to adjust the gas
train so that ignition takes place in conditions of maximum safety,
i.e. with gas delivery at the minimum.
5.5
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. 40) 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. 40. 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. 40 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.
20043127
Start-up, calibration and operation of the burner
32
D10092
D10626
GB
Fig. 39
LO CAL
O N
O FF
O I L O FF G AS
Fig. 40
REM O TE
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