l the first (lower) threshold, a warning is shown without stopping operation;
l the second (higher) threshold, an alarm is activated and the unit shuts down as a precaution.
Index Parameter Description
Ec16 High conductivity
Set the high conductivity thresholds.
Default:
pre-alert: 1250 μS/cm
alarm: 1500 µS/cm
Hysteresis: 25 μS/cm
Possible settings:
pre-alert: 0-1500 μS/cm
alarm: 0-1500 µS/cm
Hysteresis: 0-100 μS/cm
Remarks: the hysteresis is used to reset the alarm if the conductivity
falls below the threshold minus the “Hysteresis”.
7.4.10 Remote ON/OFF operating logic (Installer menu)
Screen Ec22 is used to set the operating logic of the remote ON/OFF contact (normally open or normally
closed).
Index Parameter Description
Ec22 Remote ON input logic
Set the operating logic of the remote ON/OFF input
Default: Remote ON input logic = N.O
Possible settings: Remote ON input logic: N.O., N.C.
7.4.11 Fan speed setting
Setting the fan speed for minimum and rated production. These values are set by default to ensure the
correct air/gas mix with the natural gas
Pre-purge speed. The pre-purge speed is indicated in “RPM” and is normally set by the manufacturer
based on the characteristics of the combustion system and the gas.
Note: these parameters must only be modified by qualified personnel.
Display Value and notes Default Unit of measure
Pre-Purge
Pre- purge fan speed set
points
UG045 =2500
UG090 =2500
UG150 =2500
UG180 =2500
UG300 =2500
UG450 =2500
RPM
Min speed
Fan speed set point at
minimum production
UG045 =1450
UG090 =1700
UG150 =1900
UG180 =2000
UG300 =1900
UG450 =1900
RPM
Max speed
Fan speed set point at rated
production
UG045 =4700
UG090 =5050
UG150 =6750
UG180 =5300
UG300 =6750
UG450 =6750
RPM
Index Parameter Description
Ec23 Burner 1 settings
Set pre-purge speed, minimum speed and maximum speed for rated
steam production