Basic Documentation

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Siemens Modular Heating Controller RMH760B CE1P3133en
Building Technologies Contents 2017-09-29
8.7 Setpoint increase ............................................................................................................. 101
8.8 Limit and protective functions ........................................................................................... 102
8.8.1 Frost protection ................................................................................................................ 102
8.8.2 Limitations ....................................................................................................................... 102
8.8.3 Limitation of the return temperature ................................................................................. 103
8.8.4 Pulse limitation ................................................................................................................ 105
8.8.5 Pump overrun and mixing valve overrun .......................................................................... 106
8.8.6 Pump kick and valve kick ................................................................................................. 106
8.9 Text designation .............................................................................................................. 106
8.10 Fault handling .................................................................................................................. 106
8.11 Diagnostic choices ........................................................................................................... 108
9 Heating circuit control .............................................................................. 109
9.1 Overview of function block ............................................................................................... 109
9.2 Configuration ................................................................................................................... 109
9.2.1 3-position or modulating mixing valve .............................................................................. 111
9.2.2 Pump control ................................................................................................................... 111
9.3 Operating modes in the heating circuit ............................................................................. 112
9.3.1 Room operating modes.................................................................................................... 112
9.3.2 User request in the room ................................................................................................. 113
9.3.3 Room operating mode contact ......................................................................................... 114
9.3.4 Timer function .................................................................................................................. 114
9.3.5 Room operating mode outputs ......................................................................................... 115
9.3.6 Plant operation ................................................................................................................ 116
9.3.7 Control priorities in the heating circuit .............................................................................. 117
9.4 Room temperature setpoints ............................................................................................ 118
9.4.1 Settings ........................................................................................................................... 118
9.4.2 Raising the Economy setpoint .......................................................................................... 119
9.4.3 Room temperature setpoint adjuster, absolute ................................................................. 120
9.4.4 Room temperature setpoint adjuster, relative ................................................................... 121
9.5 Weather-compensated heating circuit control .................................................................. 122
9.5.1 The composite and the attenuated outside temperature................................................... 122
9.5.2 Heating curve .................................................................................................................. 123
9.5.3 Influences on the flow temperature setpoint ..................................................................... 125
9.5.4 Heating limit switch .......................................................................................................... 128
9.6 Mixing valve control ......................................................................................................... 129
9.6.1 Control ............................................................................................................................. 129
9.6.2 Load control ..................................................................................................................... 129
9.7 Optimization functions ..................................................................................................... 130
9.7.1 Type of optimization ......................................................................................................... 130
9.7.2 Optimum start and stop control ........................................................................................ 131
9.7.3 Quick setback and boost heating ..................................................................................... 132
9.8 Limit and protective functions ........................................................................................... 133
9.8.1 Maximum limitation of the room temperature ................................................................... 133