Siemens LMU64 Series - Page 6

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Siemens Building Technologies Basic Documentation LMU54... / LMU64... CC1P7494en
HVAC Products Contents 07.11.2002
− Handling the forced signal.........................................................80
− Flow temperature control..............................................................80
− Pump control..............................................................................81
− Pump control with pump circuits.................................................81
− Pump control with mixing circuits ...............................................81
− Pump overrun..........................................................................81
− Pump kick...............................................................................81
− Mixing valve control.....................................................................81
− Position of mixing valve in the idle state......................................81
− Functional test ............................................................................81
5 Clip-in module OCI420... for communication via LPB..........................82
− Functions ...................................................................................82
− General ..................................................................................82
− Inputs / outputs...........................................................................82
− Interfaces to LMU........................................................................82
5.1 Connection of LMU... to ALBATROS via OCI420 (LPB clip-in) ..................82
5.1.1 Additional heating circuit extensions via ALBATROS controllers................82
− Automatic changeover of operating mode.......................................83
− Giving consideration to heat demand from the RVA…......................83
− Locking and forced signals when connecting to the LPB...................83
5.1.2 External DHW heating by ALBATROS controllers ...................................83
− Type of priority of DHW heating ....................................................84
5.1.3 Multiboiler plants with LMU (cascade applications)..................................84
− Separate DHW circuit in cascade applications.................................85
− Operation with the RVA65... .........................................................85
5.1.4 System functions ................................................................................86
− Uniform system time....................................................................86
− Error / diagnostic messages from the LMU......................................86
− Outside sensor, outside temperature sensor...................................88
− Assignment of address numbers................................................88
− Setting the LPB device and segment address.................................88
6 Clip-in function module AGU2.51x .....................................................89
− Functions ...................................................................................89
− General ..................................................................................89
− Outputs......................................................................................89
− Number of available outputs......................................................89
− Inputs........................................................................................90
− Digital input .............................................................................90
− Analog input ............................................................................90
− Predefined setpoint (temperature demand)..................................90
− Predefined output ....................................................................91
− Sensor input “Pressureless header”............................................91
7 DHW control (BWR) ..........................................................................93
− Boiler temperature setpoint during DHW heating with storage tank
systems .....................................................................................93
− DHW temperature control.............................................................94
− Compensation variants.............................................................94
− Position of diverting valve..........................................................95
− Storage tank systems...............................................................95
− Stratification storage tank..........................................................96