43
NRG 26-61 - Installation & Operating Manual -
819874-00
Bringing into service
Notes on calibration
Always perform calibration with the boiler fluid at the operating point
If you set the measuring range while the fluid is cold, the settings will change when subject to
heat and will then need to be corrected at the operating point.
Calibration to the lower bound of the active measuring range “CAL.L” (0 % calibration value)
Bring the level to 0 % and perform calibration.
Pay attention to the setting instructions on page 39 and proceed as follows:
1.
Reduce the level of water in the boiler to the 0 % limit of the desired measuring range.
2.
Select the parameter “
CAL.L
”. After approx. 3 seconds, the old value is shown
as a hexadecimal display.
3.
Press and hold the rotary knob until the new value is displayed.
4.
Save your setting by pressing the rotary knob for approx. 1 second.
5.
Continue with calibration “
CAL.P
” or “
CAL.H
”.
Independent rapid calibration at a water level of > 25 % of the active measuring range “CAL.P”
This parameter enables partial filling of the boiler, as an alternative to complete filling. The
value set for partial filling is extrapolated to 100 % of the boiler level.
Pay attention to the setting instructions on page 39 and proceed as follows:
1.
Increase the level of water in the boiler to > 25 % of the desired measuring range.
2.
Select the parameter “
CAL.P
”. After approx. 3 seconds, the old value is shown
as a hexadecimal display.
3.
Press and hold the rotary knob until the value (e.g. 0025) appears. The last digit flashes.
4.
Set the desired reading > 25 % to match the set level.
5.
Save your setting by pressing the rotary knob for approx. 1 second.
