User Manual
Heating, ventilation and air conditioning - room temperature control
Room thermostats
Flush-mounted
208
Siemens Switzerland Ltd www.siemens.com/gamma 2020
Smart Infrastructure
7
Touch screen room thermostat for 2-/4- pipe fan coil, universal applications or
compressors in DX-type equipment
Operating modes: Comfort, Economy and Protection
For heating and/or cooling applications
2 or 3-position control outputs
Output for 1-speed or 3-speed fan
2 multifunctional inputs for keycard contact, external room / return air temperature (QAH11.1,
QAA32), heat / cool changeover, window contact on/off, dewpoint monitor, electrical heater enabled,
fault contact, presence detector
Automatic or manual heating/cooling changeover
Adjustable commissioning and control parameters
Minimum and maximum setpoint limitation
Color of housing: Ivory white
Backlit display
Application selectable:
2-pipe system
2-pipe system with electrical heater
4-pipe system
Data sheet
N3174
Power consumption
6 VA
Setpoint setting range
5...40 °C
Switching differential
0.5…6 K
Communication
Bus: KNX (S-mode and LTE mode with Synco 700)
Analog inputs, number
2
Relay outputs
Fan: N.O. contacts, non-floating
Valve: N.O. contacts, non-floating
Relay outputs, number
5
Relay output, switching voltage
AC 230 V
Relay output, switching current
5 (2) A
Degree of protection
IP30
Dimensions (W x H x D)
86 x 86 x 47 mm
RDF8..KNX Flush Mount
Range overview RDF8..KNX Flush Mount
Product Title
Operating
voltage
[V]
Stock no.
Product no.
Touch screen room thermostat for 2-/4- pipe fan coil, universal
applications or compressors in DX-type equipment , black
AC 230
S55770-T429
RDF800KN/VB
Touch screen room thermostat with KNX communications, for 2-/4-
pipe fan coil, universal applications or compressors in DX-type
equipment (for China frames)
AC 230
S55770-T335
RDF800KN/NF
Touch screen room thermostat with KNX communications, for 2-/4-
pipe fan coil, universal applications or compressors in DX-type
equipment
AC 230
S55770-T350
RDF800KN
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