Table of Contents
Advertisement
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
7.5
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.
7.6
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 flow rate. The arrival of gas to
the pipe coupling is displayed on the pressure gauge, as shown
in (Fig. 41 on page 55).
7.7
Burner flame goes out during operation
If the flame should go out during operation, the burner will lockout
within 1 s.
20205886
Control and display
Unit of
No. of
Modifica-
measure-
elements
tion
ment
2
-
Reading only
1
-
Reading only
1
%
Reading only
3
m
/h, l, h,
1
Reading only
3
ft
/h, gal/h
1
-
Reading only
1
-
Reading only
1
-
Reading only
10
-
Reset
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 flame control
carries out the switching off phase.
The air damper closes completely to reduce heat losses to a
minimum.
As an alternative to control through TR, the command for burner
modulation can be made also using a 4-20 mA signal.
Burner with modulating operation kit
See manual enclosed with the adjuster kit.
WARNING
DANGER
52
GB
Values interval
Degree of
precision
Min.
Max.
0
255
1
0
255
1
0%
100%
1%
0
6553,5
0,1
0
255
1
0
255
1
0
255
1
0xFFFFFF
0
1
FF
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.
Predefined
Access mode
setting
0
Info mode
0
Info mode
0%
Info mode
0
Info mode
0
Info mode
0
Info mode
0
Info mode
0
Service mode
Tab. P
Advertisement
Table of Contents
