Operating Instructions

Table Of Contents
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Siemens RXB (KNX) application library RXB Description of functions for FC-10, FC-11, FC-12, FC-13 CM110385en_08
Building Technologies Contents 2013-06-17
8.3 Fan coils with an electric reheater ............................................................... 96
8.3.1 4-pipe fan-coils with electric reheater .......................................................... 97
8.3.2 2-pipe fan-coils with electric reheater .......................................................... 97
8.3.3 Electric reheater RXB21.1 (relay) ............................................................... 99
8.3.4 Electric reheater RXB39.1 (DC 0...10 V plus relay) .................................. 102
8.4 Fan-coils with LTHW radiator (FNC18) ..................................................... 106
8.4.1 Configuration and parameter setting ......................................................... 106
8.4.2 Position values for radiator valve actuators .............................................. 108
8.4.3 Heat demand ............................................................................................. 108
8.4.4 Radiator valve actuator override ............................................................... 109
8.4.5 Downdraft compensation .......................................................................... 109
8.5 Outside air damper fan coils ("Economizer", FNC10, FNC12) .................. 111
8.5.1 Configuration and parameterization .......................................................... 112
8.5.2 Enabling of the function ............................................................................. 113
8.5.3 Position values for damper actuators ........................................................ 114
8.5.4 Overriding the outside air damper ............................................................. 114
8.6 Room supply air cascade control (FNC08) ............................................... 115
8.6.1 Parameterizing .......................................................................................... 116
8.6.2 Supply air inputs / outputs ......................................................................... 117
9 Fan control ................................................................................................ 118
9.1 Description 1 / 2 / 3-speed fan (RXB2...) .................................................. 118
9.2 Fan parameter setting 1 / 2 / 3-step .......................................................... 121
9.3 Description DC 0...10 V fan (RXB39.1) ..................................................... 123
9.3.1 Automatic mode (FNC02 / 03 / 04 only) .................................................... 123
9.3.2 Automatic mode (FNC08 only) .................................................................. 125
9.3.3 Room unit (RXB39.1/FC-13 only) ............................................................. 126
9.3.4 Values representing fan speed ................................................................. 127
9.4 Fan parameter setting DC 0...10 V fan ..................................................... 129
9.5 Minimum on time ....................................................................................... 131
9.6 Fan overrun time (switch-off delay) ........................................................... 131
9.7 Periodic fan kick ........................................................................................ 132
10 Master/slave .............................................................................................. 133
10.1 Description ................................................................................................ 133
10.2 S-mode ...................................................................................................... 134
10.2.1 Window switch (S-Mode) .......................................................................... 135
10.2.2 Presence detector (S-mode) ..................................................................... 135
10.3 LTE mode with zones ................................................................................ 136
10.3.1 Window switch (LTE mode) ...................................................................... 137
10.3.2 Presence detector (LTE mode) ................................................................. 137
10.4 Peripheral functions .................................................................................. 138
11 General and central functions ................................................................... 139
11.1 Send heartbeat and receive timeouts ....................................................... 141
11.2 Digital inputs .............................................................................................. 142
11.3 Temporary Comfort mode ......................................................................... 143
11.4 Presence detector switch-on and switch-off delay .................................... 143
11.5 Heating and cooling demand .................................................................... 143
11.6 Heating/cooling signal output .................................................................... 144
11.7 Special functions ....................................................................................... 145
11.8 Boost heating (Morning Warmup, 2) ......................................................... 146
11.9 Night purge (Night Purge, 4), (FNC10, FNC12) ........................................ 146
11.10 Precooling (Precool, 5) .............................................................................. 147
11.11 Test mode (Test, 7) ................................................................................... 148