4 NRR 2-52, NRR 2-53, URB 55 - USA- Installation & Operating Manual - 850698-00
Contents
Configuring the level controller .........................................................................................................52
Setting the MIN/MAX switchpoints and set point ............................................................................52
Automatic/Manual mode ................................................................................................................ 53
Trend log .......................................................................................................................................54
Test - Testing the relays of the connected level controller ...............................................................55
Valve calibration in manual mode when a feedback potentiometer is connected ............................56
Pump control * ...............................................................................................................................57
Calibrate the boiler level (for NRG2.-.. ONLY) ..................................................................................58
Setting the level controller .............................................................................................................59
Guide to setting control parameters ...............................................................................................59
Setting the level controller for 3-element control ............................................................................60
System malfunctions in the URB 55 ..................................................................................................61
Indication of system malfunctions in the alarm and error list using error codes ..............................61
Common faults and issues during use of the URB 55 .....................................................................62
System malfunctions in the NRR 2-52, NRR 2-53 .............................................................................63
Causes ..........................................................................................................................................63
Check the installation and configuration before systematic troubleshooting ...................................63
What to do in the event of system malfunctions...............................................................................64
Checking installation and function .................................................................................................64
Taking the NRR 2-52, NRR 2-53 out of service .................................................................................. 64
Taking out of service URB 55 .............................................................................................................64
UL components ...................................................................................................................................65
Disposal ..............................................................................................................................................65
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