Basic Documentation

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Siemens Modular Heating Controller RMH760B CE1P3133en
Building Technologies Contents 2017-09-29
4.4 Contrast of display ............................................................................................................. 40
4.5 Text entries ........................................................................................................................ 41
4.5.1 Device name and file name ............................................................................................... 41
4.5.2 Function block ................................................................................................................... 41
4.5.3 Texts for the fault inputs..................................................................................................... 41
4.5.4 Electronic business card .................................................................................................... 42
4.5.5 Resetting text entries ......................................................................................................... 42
5 General functions, fundamentals ............................................................... 43
5.1 Time switch ....................................................................................................................... 43
5.1.1 Communication .................................................................................................................. 43
5.1.2 Entries ............................................................................................................................... 44
5.1.3 Fault handling .................................................................................................................... 46
5.2 Holidays and special days ................................................................................................. 46
5.2.1 Communication .................................................................................................................. 46
5.2.2 Holidays............................................................................................................................. 47
5.2.3 Special days ...................................................................................................................... 48
5.2.4 Calendar entry ................................................................................................................... 48
5.2.5 Control inputs for holidays and special days ...................................................................... 49
5.2.6 Fault handling .................................................................................................................... 49
5.3 Frost protection for the plant .............................................................................................. 50
5.4 Pump overrun and mixing valve overrun ............................................................................ 51
5.5 Pump kick and valve kick ................................................................................................... 52
5.6 Heat demand and load control ........................................................................................... 53
5.6.1 Heat demand ..................................................................................................................... 53
5.6.2 Load control ....................................................................................................................... 54
5.7 Mixing valve control ........................................................................................................... 55
5.7.1 Control ............................................................................................................................... 55
5.7.2 Setting aids ........................................................................................................................ 56
5.7.3 Control signal..................................................................................................................... 58
5.8 Pump control and twin pumps ............................................................................................ 59
5.8.1 Changeover logic ............................................................................................................... 60
5.8.2 Overload message and supervision of flow ........................................................................ 61
6 Boiler temperature control ......................................................................... 62
6.1 Overview of function block ................................................................................................. 62
6.2 Configuration ..................................................................................................................... 63
6.2.1 Burner types ...................................................................................................................... 65
6.2.2 Boiler hydraulics ................................................................................................................ 66
6.3 Boiler operating modes and boiler setpoints ...................................................................... 68
6.4 Releasing and locking a boiler ........................................................................................... 69
6.5 Test mode and commissioning aids ................................................................................... 69
6.5.1 2-position control with 1-stage burner ................................................................................ 70
6.5.2 2-position control with 2-stage burner ................................................................................ 71