User Manual

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Siemens RDF800KN… CB1N3174en
Smart Infrastructure Touch Screen Flush-mount Room Thermostats with KNX Communications 2021-04-22
Connection terminals
L X1 M
N
Q1 Q2 Q3
Y1
SELV
Y2
X2
3171A01
CE+ CE
-
L, N Operating voltage AC 230 V
Q1 Control output "Fan speed 1 AC 230 V"
Q2 Control output "Fan speed 2 AC 230 V"
Q3 Control output "Fan speed 3 AC 230 V"
Y1,Y2 Control output "Valve" AC 230 V (N.O., for normally
closed valves), output for compressor or output for
electrical heater
X1, X2 Multifunctional input for temperature sensor (such as
QAH11.1) or potential-free switch
Factory setting:
– X1 = Window contact
– X2 = External sensor
(function can be selected via parameter P38 / P40)
M Measuring neutral for sensor and switch
CE+ KNX data +
CE- KNX data -
Connection diagrams
Application
N1 Room thermostat RDF800KN...
M1 1- or 3-speed fan
V1 Valve actuator, 2- or 3-position
V1, V2 Valve actuator, 2-position
E1 Electric heater
C1, C2 1-stage compressor
S1, S2 Switch (keycard, window contact,
presence detector, etc.)
B1, B2 Temperature sensor (return air
temperature, external room
temperature, changeover sensor,
etc.)
CE+ KNX data +
CE- KNX data –
2-pipe / heating or
cooling – ON/OFF
2-pipe, / heating or
cooling – 3-position
− Y1 = Open
− Y2 = Close
2-pipe and el.
heater/
Heating or cooling
and el. heater
4-pipe /
Heating and radiator
− V1 = Heating
− V2 = Cooling
1-stage compressor
− C1 = Heating
and / or
− C2 = Cooling
1-stage compressor
and electric heater
L
N
10 A
L
N
Y1
Y2
AC 230 V
X1
M
X2
N1
M1
V1
5(2)A
Max.
5(2)A
Max.
B2
S2
B1
S1
3171A12
Q1 Q2 Q3
I II III
CE+ CE-
KNX
V1
5(2)A
Max.
E1
5(2)A
Max.
5(2)A
Max.
V1
C1
5(2)A
Max.
V1
5(2)A
Max.
V2
5(2)A
Max.
C1
5(2)A
Max.
E1
5(2)A
Max.
C2
5(2)A
Max.