38
NRG 26-60 - Installation & Operating Manual -
819875-00
Bringing into service
Notes on calibration
Always perform calibration at the operating point of the boiler fluid
If the medium is cold when setting the measurement range, the influence of heat alters the
settings. If this is the case, the settings must be corrected at the operating point.
Performing a calibration to the lower bound of the active measurement range “CAL.L”
(0 % calibration value)
The system must go to the 0 % range and be calibrated.
Note the setting instructions on page 35 and proceed as follows:
1.
Reduce the water level in the boiler to the 0 % limit of the required measurement range.
2.
Select the parameter “
CAL.L
”, the old value will appear in hexidecimal display after
approx. 3 seconds.
3.
Press and hold the rotary knob until the new value appears on the display.
4.
Save your set value by pressing the rotary knob for approx. 1 second.
5.
Continue with the calibration “
CAL.P
” or “
CAL.H
”.
Performing an independent quick calibration to a water level > 25 % of the active measurement
range “CAL.P”
Alternatively to completely filling the boiler, this parameter allows partial filling. The value set
for the partial filling is extrapolated to 100 % of the boiler level.
Note the setting instructions on page 35 and proceed as follows:
1.
Raise the water level in the boiler to a value > 25 % of the required measurement range.
2.
Select the parameter “
CAL.P
”, the old value will appear in hexidecimal display after
approx. 3 seconds.
3.
Press and hold the rotary knob until the value (e.g. 0025) appears. The last digit flashes.
4.
Set the required measured value > 25 % of the set level.
5.
Save your set value by pressing the rotary knob for approx. 1 second.
