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Start-up, calibration and operation of the burner
6.1 Notes on safety for the first start-up
6.2 Adjustments prior to ignition
Combustion head adjustment is already described on page 16.
In addition, the following adjustments must also be made:
open the manual valves upline of the gas train.
Adjust the minimum gas pressure switch to the start of the
scale (Fig. 24).
Adjust the air pressure switch to the start of the scale (Fig.
22 on page 22).
Purge the air from the gas line. We recommend using a plas-
tic tube routed outside the building and to purge air until gas
is smelt.
Fit a U-type pressure gauge (Fig. 21) to the gas pressure
test point on the pipe coupling.
Used for getting an approximation of the burner output in the
2nd stage using Tab. F on page 18.
Connect two lamps or testers parallel to the two gas line
solenoids VR and VS in order to check the exact moment at
which voltage is supplied. This operation is unnecessary if
each of the two solenoids is equipped with a pilot light that
signals voltage passing through.
6.3 Burner start-up
Close the remote controls and turn:
As soon as the burner starts make sure that the lamps or testers
connected to the solenoids, or indicator lights on the solenoids
themselves, show that there is no voltage. If voltage is present,
stop the burner immediately and check the electrical wiring.
6.4 Burner ignition
The burner should light after having performed the above steps.
If the motor starts but the flame does not appear and the control
box goes into lockout, reset and wait for a new ignition attempt.
If ignition is still not achieved, it may be that gas is not reaching
the combustion head within the safety time period of 3 seconds;
In this case increase gas ignition delivery.
The arrival of gas at the sleeve is indicated by the U-type manom-
eter (Fig. 21).
In the event that the burner locks-out again, refer to chapter
“Faults - Possible causes - Solutions” on page 28.
Once the burner has fired, now proceed with global calibration
operations.
6 Start-up, calibration and operation of the burner
The first start-up of the burner must be carried out
by qualified personnel, as indicated in this manual
and in compliance with the standards and regula-
tions of the laws in force.
Check the correct working of the adjustment, com-
mand and safety devices.
Before igniting the burner, refer to paragraph
“Safety test - with gas supply closed” on
page 25.
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 deliv-
ery at the minimum.
In the event the burner stops, in order to prevent
any damage to the installation, do not unblock the
burner more than twice in a row. If the burner
locks out for a third time, contact the customer
service.
In the event there are further lockouts or faults
with the burner, the maintenance interventions
must only be carried out by qualified, authorised
personnel, in accordance with the contents of this
manual and in compliance with the standards and
regulations of current laws.
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