SIEMENS RDF600KN Flush Mount KNX Room Thermostat
Features
For 2-pipe, 2-pipe with electric heater, and 4-pipe fan coil units For use with compressors in DX type equipment
- KNX bus communications (S-mode and LTE mode)
- Backlit display
- 2P / PI / P control
- Outputs for on/off or 3-position control
- Outputs for 3-speed or 1-speed fan
- 2 multifunctional inputs for keycard contact, external sensor, etc.
- Operating modes: Comfort, Economy and Protection
- Automatic or manual fan speed control
- Automatic or manual heating/cooling changeover
- Minimum and maximum limitation of room temperature setpoint
- Control depending on the room or the return air temperature
- Adjustable commissioning and control parameters
- Commissioning with Synco ACS, ETS or via local HMI
- Integration into Synco
- Integration into Desigo via group addressing (ETS) or via individual addressing
- Integration into third-party system via group addressing (ETS)
- AC 230 V operating voltage
- User and parameter settings can be retained or restored with power loss
Additional RDF600KN/S features:
- Four buttons to control KNX actuators via KNX S-mode (functions: switching, dimming, blinds control, 8-bit scene)
Use
Room temperature control (heating or cooling) in individual rooms and zones by means of:
- 2-pipe fan coil units
- 2-pipe fan coil units with electric heater
- 4-pipe fan coil units
- Compressors in DX-type equipment
- Compressors in DX-type equipment with electric heater
The thermostats control:
- One 1-speed or 3-speed fan
- One or two on/off valve actuators
- One on/off valve actuator and one 1-stage electric heater
- One 3-position valve actuator
- One 1-stage compressor in DX-type equipment, or one 1-stage compressor with electric heater
Used in systems with:
- Heating or cooling mode
- Automatic heating/cooling changeover
- Manual heating/cooling changeover
- Heating and cooling mode (e.g. 4-pipe system)
The room thermostats are delivered with a fixed set of applications.
The relevant application is selected and activated during commissioning using one of the following tools:
- Synco ACS
- ETS
- Local DIP switch and HMI
Functions
- Room temperature control via built-in temperature sensor or external room temperature / return air temperature sensor.
- Changeover between heating and cooling mode (automatically via local sensor or bus, or manually).
- Selection of applications via DIP switches or commissioning tool.
- Selection of operating mode via operating mode button on the thermostat.
- Temporary Comfort mode extension.
- 1-speed or 3-speed fan control (automatically or manually).
- Display of current room temperature or setpoint in °C and/or °F.
- Minimum and maximum limitation of room temperature setpoint.
- Button lock (automatically and manually).
- 2 multifunctional inputs, freely selectable for:
- Sensor for automatic heating/cooling changeover
- External room temperature or return air temperature sensor
- Dew point sensor
- Electric heater enable
- Fault input
- Monitor input for temperature sensor or switch state
- Window contact
- Presence detector (standard presence and hotel presence)
- Advanced fan control function, e.g. fan kick, fan start, selectable fan operation (enable, disable or depending on heating or cooling mode).
- Purge function together with 2-port valve in a 2-pipe changeover system.
- Reminder to clean fan filters (adjust with P62).
- Floor heating temperature limitation.
- Reload factory settings for commissioning and control parameters.
- KNX bus (terminals CE+ and CE-) for communication with Synco or KNX compatible devices.
- Display of outdoor temperature or time of day via KNX bus.
- Time scheduling and central control of setpoints via KNX bus.
- With a Synco RMx7xx controller, the energy demand signal of the thermostat is used to optimize energy supply.
RDF600KN/S only:
Four buttons to control KNX actuators via KNX S-mode.
(“Switching groups” with functions such as switching, dimming, blinds control, 8- bit scene).
Applications
The thermostats support the following applications, which can be configured using the DIP switches on the inner side of the thermostat’s front panel or a commissioning tool.
Remote configuration
All DIP switches need to be set to OFF (remote configuration, factory setting) to select an application via the commissioning tool.
Remote configuration, via commissioning tool (factory set)
Applications for fan coil systems
Legend
- Y1 Heating or heating/cooling valve actuator
- Y2 Cooling valve actuator
- YE Electric heater
- N1 Thermostat
- B1 Return air temperature sensor or external room temperature sensor (optional)
- B2 Changeover sensor (optional)
- M1 1-speed or 3-speed fan
Applications for Universal systems
Legend
- Y1 Heating or heating/cooling valve actuator
- YR Radiator valve actuator
- YE Electric heater
- N1 Thermostat
- B1 Return air temperature sensor or external room temperature sensor (optional)
- B2 Changeover sensor (optional)
- M1 1-speed or 3-speed fan
- D3 Dewpoint sensor
Type summary
| Product no. | Stock no. | Operating voltage | Control outputs | Suitable conduit box 2) | Color |
| 3-pos | ON/OFF |
| RDF600KN | S55770-T293 | AC 230 V | 1 1) | 2 1) | round or square | White |
| RDF600KN/S 3) | S55770-T400 | AC 230 V | 1 1) | 2 1) | round or square | White |
| RDF600KN/VB | S55770-T430 | AC 230 V | 1 1) | 2 1) | round or square | Black |
- Selectable: on/off or 3-position.
- Square conduit box with 60 mm fixed centers. Round CEE conduit box min 60 mm diameters and min 40 mm depth.
- Control outputs: KNX switching groups
Ordering
- When ordering, indicate both product number / SSN number and name: E. g. RDF600KN/ S55770-T293 room thermostat
- Order valve actuators separately.
Equipment combinations
3-position actuators
The documents can be downloaded from http://siemens.com/bt/download.
For the maximal number of actuators in parallel, refer to information in the data sheets of the selected actuators and to this list, depending on which value is lower:
Note:
- Parallel operation of max 6 SS… actuators (3-pos) is possible.
- Parallel operation of a max 10 on/off actuators is possible.
Accessories
Mechanical design
The thermostats consist of 2 parts:
- Front panel with electronics, operating elements, and built-in room temperature sensor.
- Mounting base with power electronics.
The rear of the mounting base contains the screw terminals. Slide the front panel in the mounting base and snap on.
Operation and settings
- Operating mode selector
- Change fan operation
- Adjust setpoint and control parameters
- Four buttons to control KNX actuators via KNX S-mode
(functions: switching, dimming, blinds control, 8-bit scene)
Display
- Operating mode
Protection
Comfort
Economy
Auto Timer according to schedule (via KNX) - Displays room temperature, set points and control parameters.
Symbol indicates the current room temperature - Fan mode
Auto fan active
Fan speed low, medium, high - Heating/cooling mode
Cooling
Heating
Electric heater active - Condensation in room (dewpoint sensor active)
- Indicates fault or reminder
- Temporary comfort mode extension active
- Additional user information, like outdoor temperature or time of day from KNX bus. Selectable via parameters.
- Button lock active
- Weekday 1…7 from KNX bus (1 = Monday / 7 = Sunday)
Engineering notes
See “Reference documentation” on page 15 for information on how to engineer the KNX bus (topology, bus repeaters, etc.) and how to select and dimension connecting cables for supply voltage and field devices.
Mounting and installation
Mount the room thermostat on a conduit box. Do not mount on a wall in niches or bookshelves, behind curtains, above or near heat sources, or exposed to direct solar radiation. Mount about 1.5 m above the floor.
Mounting / Dismounting
- Mount the room thermostat on a clean, dry indoor place without direct airflow from a heating/cooling device, and not exposed to drips or splash water.
- In case of limited space in the conduit box use the mounting bracket ARG70.3 to increase the headroom by 10 mm.
Wiring
See the mounting instructions M3171… and M3076.3 enclosed with the thermostat.
- Comply with local regulations to wire, protect and earth the thermostat.
Warning! No internal line protection for supply lines to external consumers (Q1, Q2, Q3, Yxx) Risk of fire and injury due to short-circuits! - Adapt the line diameters as per local regulations to the rated value of the installed overcurrent protection device.
- The AC 230 V mains supply line must have an external circuit breaker with a rated current of no more than 10 A.
- Properly size the cables to the thermostat, fan and valve actuators for AC 230 V mains voltage.
- Use only valve actuators rated for AC 230 V.
- Cables of SELV inputs X1-M/X2-M: Use cables with 230 V insulation, as the conduit box carries AC 230 V mains voltage.
- Inputs X1-M or X2-M of different units (e.g. summer/winter switch) may be connected in parallel with an external switch. The maximum contact current rating for the external switch should fulfill the overall sensing current of all connected inputs.
- KNX communication cables (input CE+ / CE-): Use cables with 230 V insulation, as the conduit box carries AC 230 V mains voltage.
- Disconnect from supply before opening the cover.
- When a KNX bus power supply is connected on the line with communicating thermostats and Synco controller, the internal KNX power supply of the Synco controllers must be switched off.
Commissioning notes
Applications
The room thermostats are delivered with a fixed set of applications. Select and activate the relevant application during commissioning using one of the following tools:
- Local DIP switch and HMI
- Synco ACS
- ETS
Set the DIP switches before snapping the front panel to the mounting plate, if you want to select an application via DIP switches.
All DIP switches need to be set to “OFF” (“remote configuration”), if you want to select an application via commissioning tool.
After power is applied, the thermostat resets and all LCD segments flash, indicating that the reset was correct. After the reset, which takes about 3 seconds, the thermostat is ready for commissioning by qualified HVAC staff.
If all DIP switches are OFF, the display reads “NONE” to show that an application needs to be set via tool.
Note Each time the application is changed, the thermostat reloads the factory setting for all control parameters, except for KNX device and zone addresses!
Connect tool
Connect the Synco ACS or ETS tools to the KNX bus cable at any point for commissioning:
ACS and ETS require an interface:
- Ethernet/LAN KNX interface (e.g. Siemens N148 / N146 / N152)
- OCI702 USB- KNX interface
Note
An external KNX bus power supply is required if an RDF600KN… is connected directly to a tool (ACS or ETS) via KNX interface.
Control parameters
The thermostat’s control parameters can be set to ensure optimum performance of the entire system (see basic documentation P3171).
The parameters can be adjusted using
Control sequence
The control sequence may need to be set via parameter P01 depending on the application. The factory setting for the 2-pipe application is “Cooling only”; and “Heating and Cooling” for the 4-pipe application.
Compressor-based application
When the thermostat is used with a compressor, adjust the minimum output on-time (parameter P48) and off-time (parameter P49) for Y11/Y21 to avoid damaging the compressor or shortening its life due to frequent switching.
Calibrate sensor
Recalibrate the temperature sensor if the room temperature displayed on the thermostat does not match the room temperature measured (after min. 1 hour of operation). To do this, change parameter P05.
Setpoint and range limitation
We recommend to review the setpoints and setpoint ranges (parameters P08…P12) and change them as needed to achieve maximum comfort and save energy.
Programming mode
- The programming mode helps identify the thermostat in the KNX network during commissioning.
- Press buttons “operating mode” and “+” simultaneously for 6 sec to activate programming mode, which is indicated on the display with “PrOg”.
- Programming mode remains active until thermostat identification is complete.
Assign KNX device address
- Assign device address (P81) via HMI, ACS or ETS.
- With device address set to 255, the communication is deactivated (no exchange of process data).
Assign KNX group addresses
Use ETS to assign the KNX group addresses of the RDF communication objects.
Switching groups RDF600KN/S only
RDF600KN/S has 2 switching groups with a pair of buttons each, which must be configured via ETS. The switching groups only work on S-mode.
KNX serial number
Each device has a unique KNX serial number inside the front panel. An additional sticker with the same KNX serial number is enclosed in the packaging box. This sticker is intended for installers for documentation purposes.
Disposal
The device is considered electrical and electronic equipment for disposal in terms of the applicable European Directive and may not be disposed of as domestic garbage.
- Dispose of the device through channels provided for this purpose.
- Comply with all local and currently applicable laws and regulations.
Technical data
Reference documentation
Handbook for Home and Building Control – Basic Principles (https://my.knx.org/shop/product? language=en&product_type_category=books&pr oduct_type=handbook)
- Synco CE1P3127 Communication via the KNX bus for Synco 700, 900 and RXB/RXL Basic documentation
- Desigo CM1Y9775 Desigo RXB integration – S-mode
CM1Y9776 Desigo RXB / RXL integration – individual addressing CM1Y9777 Third-party integration
CM1Y9778 Synco integration
CM1Y9779 Working with ETS
Connection terminals
- 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”
- Y11,Y21 Control output “Valve” AC 230 V (N.O., for normally closed valves), output for compressor or output for electric heater
- X1, X2 Multifunctional input for temperature sensor (e.g. QAH11.1) or potential-free switch
Factory setting:
- X1 = Operating mode switchover 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
- N1 Room thermostat RDF600KN…
- M1 1-speed or 3-speed fan
- Y1 Valve actuator, 2-postion or 3-position
- Y1, Y2 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 –
Dimensions
Dimensions in mm
Issued by
Siemens Switzerland Ltd
Smart Infrastructure Global Headquarters Theilerstrasse 1a
CH-6300 Zug
Tel. +41 58 724 2424
www.siemens.com/buildingtechnologies
© Siemens Switzerland Ltd, 2019
Technical specifications and availability subject to change without notice.
RDF600KN, RDF600KN/VB, RDF600KN/S
REFERENCE:
DOWNLOAD MANUALS:
SIEMENS RDF600KN Flush mount KNX room thermostat Product Specifications Guide
OTHER MANUALS:
SIEMENS RDF600KN Flush mount KNX room thermostat Operating Instructions
SIEMENS RDF600KN Flush mount KNX room thermostat Product Specifications Guide