User Manual

14 / 20
Siemens RDF800KN… CB1N3174en
Smart Infrastructure Touch Screen Flush-mount Room Thermostats with KNX Communications 2020-02-21
Technical data
Power supply
Rated voltage AC 230 V
Overvoltage category III
Frequency 50/60 Hz
Power consumption Max. 6.0 VA / 2.1 W
Caution
No internal fuse!
External preliminary protection with max C 10 A circuit breaker required in all cases.
Outputs Fan control Q1, Q2, Q3-N
Rating min, max resistive (inductive)
AC 230 V
Min. 5 mA, Max. 5(2) A
Fans must NOT be connected in parallel!
Connect one fan directly, for additional fans, one
relay for each speed.
Control output Y1-N / Y2-N (NO)
Rating Min, Max resistive (inductive)
Max. total load current through terminal "L" (Qx+Yx)
AC 230 V
Min. 5 mA, Max. 5(2) A
Max. 7 A
Caution
No internal fuse!
External preliminary protection with max C 10 A circuit breakers in the supply line
required in all cases.
Inputs Multifunctional input X1-M / X2-M
Temperature sensor input:
Type
Temperature range
Cable length
Digital input:
Operating action
Contact sensing
Parallel connection of several thermostats for
one switch
Insulation against mains voltage (SELV)
See “Equipment combinations”
0...49 °C
Max. 80 m
Selectable (NO / NC)
SELV DC 0...5 V / Max. 5 mA
Max. 20 thermostats per
switch
4 kV, reinforced insulation
Function of inputs:
External temperature sensor, heating/cooling
changeover sensor, window contact, presence
detection, dewpoint monitor contact, enable
electrical heater contact, fault contact, monitoring
input
Selectable
X1: P38
X2: P40
KNX bus Interface type KNX, TP1-64
(electrically isolated)
Bus current 5 mA
Bus topology: See KNX manual (see “Reference documentation”)
Operational data Switching differential, adjustable
Heating mode (P30)
Cooling mode (P31)
2 K (0.5...6K)
1 K (0.5...6K)
Setpoint setting and range
Comfort (P08)
Economy (P11-P12)
Protection (P65-P66)
21 °C (5...40 °C)
15 °C / 30°C (OFF, 5...40 °C)
8 °C / OFF (OFF, 5...40 °C)
Multifunctional input X1/X2
Input X1 default value (P38)
Input X2 default value (P40)
Selectable 0...8, 10
3 (Window contact)
1 (External temperature
sensor)
STOP
Note!