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STARTING UP AND REGULATION
•
Check that thee voltage on the mains meets the manufacturer
requirements and that all electrical connections made at the
installation site are performed properly as illustrated in our wiring
diagram.
•
Check that the discharge of combustion products through the boiler
gate and flue gate take places freely.
•
Check that there is water in the boiler and that the gate valves of
the system are open.
Check that all the gate valves fitted on the fuel suction and return
pipes are open; the same applies to any other fuel shut-off devices.
ADJUSTING POWER UPON FIRST START-UP
•
Position the first flame gas flow rate regulation cam on the electric
servomotor to an opening angle approximately between 15° and
20°. If fitted, open the safety valve flow rate regulator fully.
DANGER / CAUTION
Check that the cam V angle is greater than cam III by 5° / 10°.
•
Now, turn the switch -1 on. This powers on the control box and
the programmer turns on the burner as described in chapter :
"OPERATION DESCRIPTION".
•
On first switching on repeated “lock-outs” may occur due to the
following reasons:
- The bleeding-out of air from the gas piping was not performed
correctly and so there is not enough gas to provide a stable
flame.
- The “lock-out” with flame present may be caused by its
instability in the ionisation area, due to an incorrect air/gas
ratio.
- Correct the air flow rate supplied in the first stage, using the
screw(s) -11, near the bearing -12.
In clockwise rotation the air flow increases
In anticlockwise rotation the air flow decreases
- It may occur that the ionisation current is disturbed by the
discharge current of the ignition transformer (the two currents
have a common path on the burner’s “mass”). Therefore, the
burner locks out due to an insufficient ionisation. Invert the
supply (230V side) of the ignition transformer.
•
Another lock-out cause might be caused by an insufficient “ground
connection” to the burner’s casing.
SECOND STAGE POWER REGULATION.
•
After adjusting the regulation for the first ignition, turn off the burner
and close the electrical circuit commanding inclusion of the second
stage. Set the switch on the printed circuit to the second stage
position.
•
Activate the burner again closing the main switch -1 on the synoptic
panel. The burner turns on and goes automatically to second stage.
With the aid of appropriate instruments, attend to the regulation
of the air and gas flow according to the procedures subsequently
described:
- To regulate the gas flow operate the valve pressure regulator.
Consult the instructions related to the single stage gas valve
model installed. Avoid keeping the burner running if the heating
capacity is greater than the maximum amount allowed for the
boiler, to avoid damaging it.
•
To regulate the air flow rate, use the screws as described previously,
correct the rotation angle of the air shutter in the suitable position to
guarantee the right quantity for the power burned.
•
Check the combustion parameters with appropriate instruments
(CO2 MAX=10% O2 MIN= 3% CO MAX=0.1%)
FIRST STAGE POWER REGULATION.
After regulation of the burner in the second stage, return the burner
to the first stage. Set the switch on the printed circuit to the first stage
position without varying the adjustment of the gas valve already
performed previously.
•
Set the first stage gas flow rate to the needed value, as described
above.
1 Main on/off switch
2 Thermostat on indicator light
3 Fan motor indicator light
4 Ignition transformer indicator light
5 Gas valves' indicator light
9 Lock button
10 Reset button
Part_MotReg
01
MotReg_
002
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