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Parameter
No.
Description
Result of the sampling of the contact (codified in bits)
Bit 0.0 = 1: Minimum pressure switch
Bit 0.1 = 2: Maximum pressure switch
Bit 0.2 = 4: Pressure switch control valves
Bit 0.3 = 8: Air pressure switch
Bit 0.4 = 16: Open load check
Bit 0.5 = 32: ON load check
947
Bit 0.6 = 64: Closed load check
Bit 0.7 = 128: Safety circuit
Bit 1.0 = 1: Safety valve
Bit 1.1 = 2: Ignition
Bit 1.2 = 4: Fuel valve 1
Bit 1.3 = 8: Fuel valve 2
Bit 1.4 = 16: Fuel valve 3/ pilot valve
Bit 1.5 = 32: Reset
Relay request status (coded in bits)
Bit 0 = 1: Alarm
Bit 1 = 2: Safety valve
950
Bit 2 = 4: Ignition
Bit 3 = 8: Fuel valve 1
Bit 4 = 16: Fuel valve 2
Bit 5 = 32: Fuel valve 3/ pilot valve
954
Flame intensity
960
Actual output
961
Status of external modules and visualisation
981
Memory error: Code
982
Memory error: diagnostic code
992
Error indicators
6.13
Operation
Burner without modulating operation kit
Once the start-up cycle is completed, the servomotor command
moves on to the thermostat/pressure switch TR that controls the
pressure or the temperature in the boiler.
If the temperature or the pressure is low (so the thermostat/
pressure switch TR is closed), the burner progressively
increases the output as far as the MAX value (point "P9").
If the temperature or the pressure increases as far as the
opening of the thermostat/pressure switch TR, the burner
progressively reduces the output as far as the MIN value
(point "P1"). The sequence repeats endlessly.
6.14
Ignition failure
If the burner does not switch on, there is a lockout within 3s of
the electrical supply reaching the gas valve.
It may be that the gas does not arrive at the combustion head
within the safety time of 3s.
In this case increase gas ignition delivery.
The arrival of gas to the pipe coupling is shown by the pressure
gauge in Fig. 53.
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
WARNING
If the burner locks out for a third time, contact the
customer service.
20121288
Start-up, calibration and operation of the burner
No. of
measure-
elements
2
1
1
m
1
ft
1
1
1
10
Unit of
Values interval
Modifica-
tion
Min.
ment
-
Reading only
0
-
Reading only
0
%
Reading only
0%
3
/h, l, h,
Reading only
0
3
/h, gal/h
-
Reading only
0
-
Reading only
0
-
Reading only
0
-
Reset
0
The burner stops when the heat request is less than the heat
supplied by the burner at MIN output.
The thermostat/pressure switch TL opens, the control box
carries out the switching off phase.
The air damper closes completely to reduce heat losses to a
minimum.
Burner with modulating operation kit
See manual enclosed with the adjuster kit.
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
DANGER
manual and in compliance with the standards and
regulations of current laws.
52
GB
Degree of
Predefined
precision
setting
Max.
255
1
0
255
1
0
100%
1%
0%
6553.5
0.1
0
255
1
0
255
1
0
255
1
0
0xFFFFFF
1
0
FF
Access mode
Info mode
Info mode
Info mode
Info mode
Info mode
Info mode
Info mode
Modo Service
Tab. T
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