Siemens Desigo RXB Technical Manual page 240

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Building Technologies
8.1.6 Valve exercising feature ..............................................................................91
8.1.7 Override valve actuators .............................................................................91
8.2 Fan coils with damper control .....................................................................92
8.2.1 Four-pipe fan coils with damper control (FNC20) .......................................92
8.2.2 Value representing damper actuator positions............................................93
8.2.3 Overriding the damper actuator ..................................................................94
8.3 Fan coils with an electric heating coil ..........................................................95
8.4 Fan coils with an electric reheater...............................................................95
8.4.1 4-pipe fan-coils with electric reheater..........................................................95
8.4.2 2-pipe fan-coils with electric reheater..........................................................96
8.4.3 The electric reheater ...................................................................................97
8.5 Fan-coils with LTHW radiator (FNC18) .....................................................100
8.5.1 Configuration and parameter setting .........................................................100
8.5.2 Position values for tediator valve actuators...............................................102
8.5.3 Heat demand.............................................................................................102
8.5.4 Radiator valve actuator override ...............................................................102
8.5.5 Downdraft compensation ..........................................................................103
8.6 Outside air damper fan coils ("Economizer", FNC10, FNC12)..................105
8.6.1 Configuration and parameterization ..........................................................106
8.6.2 Enabling of the function.............................................................................107
8.6.3 Position values for damper actuators ........................................................107
8.6.4 Overriding the outside air damper .............................................................108
8.7 Room supply air cascade control (FNC08) ...............................................108
8.7.1 Parameterizing ..........................................................................................109
8.7.2 Supply air inputs / outputs .........................................................................110
9 Fan control ................................................................................................111
9.1 Description ................................................................................................111
9.2 Fan parameter setting ...............................................................................113
9.2.1 Fan speeds and control.............................................................................114
9.2.2 Minimum on time .......................................................................................115
9.2.3 Fan overrun time (switch-off delay) ...........................................................115
9.2.4 Periodic fan kick ........................................................................................115
10 Master/slave ..............................................................................................117
10.1 S-mode......................................................................................................118
10.1.1 Window switch (S-Mode) ..........................................................................119
10.1.2 Presence detector (S-mode) .....................................................................119
10.2 LTE mode with zones................................................................................120
10.2.1 Window switch (LTE mode) ......................................................................121
10.2.2 Presence detector (LTE mode) .................................................................121
10.3 Peripheral functions ..................................................................................122
11 General and central functions ...................................................................123
11.1 Send heartbeat and receive timeouts .......................................................125
11.2 Digital inputs..............................................................................................126
11.3 Temporary Comfort mode .........................................................................126
11.4 Presence detector switch-on and switch-off delay ....................................126
11.5 Heating and cooling demand ....................................................................127
11.6 Heating/cooling signal output ....................................................................128
11.7 Special functions .......................................................................................128
11.8 Boost heating (Morning Warmup, 2) .........................................................129
RXB (KNX) application library
Contents
FNC Description of functions for FC-10, FC-11, FC-12 CM110385en_05
28 Feb 2009