Operating Instructions

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Siemens RXB application library (KNX) RXB – Fan coil applications from FC-10, FC-11, FC-12, FC-13 CM110672en_05
Building Technologies 2BFNC03 – Two-pipe fan coil with changeover and electric reheater 2013-06-07
1-2-3 speed fan
Y Output signal.
TR Room temperature.
SpH Effective heating setpoint.
SpC Effective cooling setpoint.
H Heating sequence.
C Cooling sequence.
Q14 Fan speed 1.
Q24 Fan speed 2.
Q34 Fan speed 3.
10385D34
Change-over
TR [°C]
Y
H
C
Q14
Q24
Q34
SpH SpC
DC 0...10 V fan
YC... Output signal (fan / valve)
TR Room temperature
Sp Effective setpoint (H/C)
0% / 4% Hysteresis for fan start
with min. speed
Smin Min. fan speed (H/C)
Smax Max. fan speed (H/C)
OfsFan Offset for fan start
XpFan P-band for fan operation
FanStartDmd Valve position for
fan start
Fan in sequence
Fan in parallel
100%
0%
Fan
Valve
S
maxH
S
minH
Sp
CC
mf
Sp
HCmf
S
max
C
TR
S
min
C
YC...
4%
0%
FanStartDmd
Heat
FanStartDmd
Cool
100%
0%
Fan
Valve
S
maxH
S
minH
Sp
CC
mf
Sp
HCmf
S
max
C
TR
S
min
C
X
PFanH
Ofs
FanH
X
PFanC
Ofs
FanC
YC...
4%
0%