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6.11
Ignition failure
It may be that the gas does not reach the combustion head within
the safety time of 3 s.
In this case increase gas ignition flow rate.
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.
WARNING
If the burner locks out for a third time, contact the
customer service.
6.12
Burner flame goes out during operation
If the flame should accidentally go out during operation, the
control box will lock out.
6.13
Stopping of the burner
The burner can be stopped by:
intervening on the disconnecting switch of the electrical
supply line, located on the boiler panel;
using the switch "OFF-ON" 4)(Fig. 6 on page 11).
6.14
Final checks (with burner operating)
Open the thermostat/pressure switch TL
Open the thermostat/pressure switch TS
Turn the gas maximum pressure switch knob to the
minimum end of scale position
Turn the air pressure switch knob to the maximum end of
scale position
Turn off the burner and cut off the power
Disconnect the minimum gas pressure switch connector
Obscure the flame sensor
Make sure that the mechanical locking systems
on the adjustment devices are fully tightened.
WARNING
E-display control
DANGER
The burner must stop
The burner must stop in lockout
The burner must not start
The burner must stop in lockout due to
ignition failure
39
GB
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.
Tab. M
20171664
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