Siemens RDG200KN, Basic Documentation, Page: 8 / 150

Overview
Types
2
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2 Overview
2.1 Types
For fan coil units, universal applications and compressors in DX-type equipment
applications
Product no. Stock no.
Operating
voltage
Fan Number of control outputs
Built-in
sensor
3-speed DC On/Off PWM 3-pos DC On/Off
(3-wire)
Humidity,
temperature
RDG200KN S55770-T409 AC 24 V or
AC 230 V
✓ ✓
1)
3 3 2 ‒ 2 ✓
RDG260KN S55770-T412 AC 24 V or
DC 24 V
✓ ✓
1)
‒ ‒ ‒ 3 ‒ ✓
‒ ✓
1)
2
2)
‒ ‒ ‒ ‒
1)
The terminal Y50 is used as DC 0…10 V output.
2)
The output is relay On/Off.
2.2 Functions
The RDG2..KN KNX room thermostats are designed for use with the following:
Fan coil units via On/Off or modulating/DC control outputs:
● 2-pipe system
● 2-pipe system with electric heater
● 2-pipe system with radiator/floor heating
● 2-pipe/2-stage system
● 4-pipe system
● 4-pipe system with electric heater
● 4-pipe system with PICV and 6-port ball valve as changeover (RDG260KN)
Chilled/heated ceilings (or radiators) via On/Off or modulating/DC control outputs:
● Chilled/heated ceiling
● Chilled/heated ceiling with electric heater
● Chilled/heated ceiling and radiator/floor heating
● Chilled ceiling and radiator/floor heating
● Chilled/heated ceiling/2-stage
● Chilled/heated ceiling (4-pipe) with 6-port ball valve (RDG260KN)
● Chilled/heated ceiling with PICV and 6-port ball valve as changeover
(RDG260KN)
Compressor applications via On/Off control:
● Heating or cooling, compressor in DX-type equipment
● Heating or cooling, compressor in DX-type equipment with electric heater
● Heating and cooling, compressor in DX-type equipment
● Heating or cooling/2-stage, compressor in DX-type equipment
Control application