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 Control sequences 2013-06-17
The control mode must be selected at the engineering stage:
heating only, cooling only or changeover
The electric reheater also operates with "Cooling only" and "Change-over" in cooling
mode. In this case, the heating setpoint (SpH) is used for control.
1-step
Modulating
Heating only
or c/o = Heating
OFF
YR
ON
0%
Y
100%
YHC
TR [°C]
YR
H
1 K
SpH
10385D56
YHC
0%
TR [°C]
YR, Y
100%
H
SpH
YR
10385D57
Cooling only
or c/o = Cooling
OFF
YR
ON
0%
Y
100%
YHC
TR [°C]
YR
H
1 K
SpH
SpC
C
10358D58
YHC
0%
TR [°C]
YR, Y
100%
H
SpH
SpC
YR
C
10385D59
Changeover
OFF
YR
ON
0%
Y
100%
YHC
TR [°C]
YR
H
1 K
SpH
10785D61
C
Change-over
SpC
YHC
0%
TR [°C]
YR, Y
100%
H
SpH
YR
10785D62
C
Change-over
SpC
Changeover with
disabled electric
heater
(see page 99)
100
0
TR [°C]
YHCYHC
Y [%]
SpH SpC
H
C
Change-over
10385D60
Further details: see sections 8.1.3 through 8.1.7.
Selection of the control
mode
Electric reheater with
cooling-only or
changeover applications