Fan coil room thermostat RDF510, RDF530 For 2-pipe and 4-pipe fan coil units ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● A6V10889950_en--_j 2022-01-05 LCD backlit display Keylock function Display either room temperature or setpoint Comfort and Protection (Off) operating modes Automatic or manual heating/cooling changeover Automatic or manual 3-speed fan control Fan and heating/cooling changeover symbol display (enable / disable) Fan and heating/cooling changeover functions (enable / disable) Selectable fan operati
Use To control the room temperature in individual rooms and zones that are: ● Heated or cooled with 2-pipe fan coil units (RDF510) ● Heated or/and cooled with 4-pipe fan coil units (RDF530) The thermostats control: ● One 3-speed fan ● One or two on/off valve actuators Functions ● Maintenance of room temperature via built-in temperature sensor ● Control sequence H/C selection (P01) or H/C manual changeover via button (P01=2) ● Operating mode selection via button ● Display either room temperature value or set
Operating and setting elements 1 2 3 4 5 6 7 10 8 11 9 12 13 1. Keylock activated 8. Temperature value 2. Timer with delay Off mode 9. Temperature setpoint adjustment 3. Auto fan, fan speed 1, 2, 3 10. Fan mode selection 4. Cooling mode selected 11. Operating mode selection: On, Off, timer with delay Off 5. Valve output energized 12. Manual heating/cooling changeover 6. Heating mode selected 7. Room temperature 13.
Equipment combinations On/Off actuators Type of units Product number Data sheet*) Electromotive ON/OFF valve and actuator (only available in AP, UAE, SA and IN) MVI.../MXI... A6V11251892 Electromotive ON/OFF actuator SFA21... N4863 Thermal actuator (for radiator valve) STA23... N4884 Thermal actuator AC 230 V (for small valves 2.5 mm), NC STP23... N4884 Zone valve actuators (only available in AP, UAE, SA and IN) SUA...
Mounting Do not wall-mount in niches or bookshelves, behind curtains, above or near heat sources, wind outlets or inlets, and do not expose to direct solar radiation. Mount about 1.5 m above the floor. A mounting plate is provided for fitting onto a square conduit box with 60.3 mm fixed centers. A conduit box of at least 35-40 mm in depth to accommodate all wire connections is recommended. After installing the mounting plate, wire all terminals of the thermostat.
Commissioning After powering up, the thermostat resets and all LCD segments light up for about 3 seconds. Afterwards, the room temperature is displayed (factory setting) and the unit is ready for commissioning by qualified HVAC staff. The thermostat’s control parameters can be adjusted to ensure optimum performance of the entire system (see “Parameter settings”). Surge protection at power-up When the thermostats are powered up, LCD display and key buttons work normally except all valve and fan outputs, e.g.
RDF510 T[°C] Room temperature SDH Switching differential “Heating” W Room temperature setpoint SDC Switching differential “Cooling” YH Control command “Valve” (heating) YC Control command “Valve” (cooling) On 4-pipe applications, the thermostat controls two On/Off valves in heating and cooling mode (P01=4, factory set), or heating/cooling mode (P01=2) by manual changeover.
2. The control output was energized for more than the “Minimum output on time”; (factory setting 1 minute) Note: ● Control output Y12 delivers a control command which is inverted to the control command at output Y14 that can be used for normally open valves. ● Valve output can respond immediately and does not consider minimum On/Off time if users manually adjust the setpoint via local HMI. Fan operation The fan operates either in automatic mode or at the selected speed in manual mode.
Control parameters Parameter settings To optimize control performance, use the local HMI to adjust a number of control parameters. All control parameter settings are retained after power down. Proceed as follows to change the control parameters: Press and hold down the + and - buttons simultaneously for more than 3 seconds. Release the buttons, and within 2 seconds, press and hold down the + button for 3 seconds. P01 is displayed. Press < or > to access the desired parameter and press the √ button.
Control parameters Parameter Description Factory setting Setting range P01 Control sequence RDF510 = 2 0:= Heating only RDF530 = 4 1:= Cooling only 2:= H/C changeover manual 4:= Heating and cooling (RDF530) Note: RDF510: 0, 1, 2 RDF530: 2, 4 P05 Sensor calibration 0K -5…+5 K P06 Standard temperature display 0 0:= Room temperature 1:= Setpoint P09 Minimum setpoint in Comfort mode 5℃ 5…40 ℃ P10 Maximum setpoint in Comfort mode 35 ℃ 5…40 ℃ P14 Keylock function 0 0:= No lock 1:= Full
Operation Temperature control The thermostat acquires the room temperature via its built-in sensor and maintains the setpoint by delivering 2-position valve control commands. The switching differential is 1 K in heating mode and 1 K in cooling mode (adjustable via parameters P30 and P31). Display The display shows the current room temperature or the setpoint of the current operating mode (adjustable via parameter P06). Factory setting is to display the current room temperature.
Example Cooling setpoint adjustable: 25…40 ℃ Heating setpoint adjustable: 5…21 ℃ Keylock Keylock can be activated or deactivated via parameter P14 when the thermostat is in Comfort and Protection mode. Either full lock (P14=1) or partial lock (P14=2) can be selected. All buttons are disabled if full lock is set. On partial lock, only setpoints can be adjusted.
Avoiding damage due to moisture To avoid damage due to moisture in very warm and humid climates resulting from lack of air circulation in Comfort mode, the fan can be kept running at all times (e.g. in apartments or shops during unoccupied periods) when setting parameter P15 “ON in deadzone”. In this case, the fan continues to run at minimum fan speed 1 in the neutral zone.
Technical data Power supply Operating voltage AC 230 V (+10%, -15%) Frequency 50/60 Hz Power consumption Max. 12 VA Internal fuse (replaceable) Fuse type SLOW-BLOW Size dia. 5.2x20 mm Voltage rating 250 V Current rating 6.3 A Outputs Valve output (RDF510) Y12 (N.C.)/Y14 (N.O.) Rating AC 230 V 5 mA…4(2) A Valve output (RDF530) Y1 (N.O.) /Y2 (N.O.
Ambient conditions and protection classification Safety class II as per EN 60730-1 Pollution class II as per EN 60730-1 Degree of protection of housing IP30 as per EN 60529 Climatic ambient conditions - Storage as per EN 60721-3-1 - Transport as per EN 60721-3-2 - Class 1K3 - Class 2K3 - Operation as per EN 60721-3-3 - Class 3K5 1) 1) No condensation is allowed.
Diagrams Connection terminals RDF510 RDF530 L, N AC 230 V power supply, mains and neutral Q1 Output, fan speed 1, AC 230 V Q2 Output, fan speed 2, AC 230 V Q3 Output, fan speed 3, AC 230 V Y12 Output “Valve”, AC 230 V (NC) Y14 Output “Valve”, AC 230 V (NO) Y1 Output “Valve”, AC 230 V (NO) Y2 Output “Valve” AC 230 V (NO) 16 Siemens Smart Infrastructure A6V10889950_en--_j 2022-01-05
Connection diagrams RDF510 Example 1: with SUA21/3 Example 2: with 3-wire valve RDF530 N1 RDF510 N2 RDF530 L, N AC 230 V power supply, mains and neutral Q1, Q2, Q3 SPST relay outputs for fan speed, low(Q1), medium(Q2), high(Q3) M 3-speed fan motor V1 On/Off valve V2 On/Off valve: Siemens SUA21/3 V3 ON/Off valve: third party 3-wire valve Y1, Y2 SPST relay output, normally open Y12 SPDT relay output, normally closed Y14 SPDT relay output, normally open T 6.3 A Internal fuse (6.
Application examples RDF510 2-pipe fan coil unit ON / OFF (heating or cooling) V1 Heating/cooling valve actuator M1 3-speed fan N1 RDF510 RDF530 3076D22 4-pipe fan coil unit ON/OFF (heating and cooling) V2 V1 M1 T N2 V1 Heating or heating/cooling valve actuator V2 Cooling valve actuator M1 3-speed fan N2 RDF530 18 Siemens Smart Infrastructure A6V10889950_en--_j 2022-01-05
Dimensions Dimensions in mm View A View B Above are the dimensions for the thermostat and its mounting plate.
Issued by Siemens Switzerland Ltd Smart Infrastructure Global Headquarters Theilerstrasse 1a CH-6300 Zug +41 58 724 2424 www.siemens.com/buildingtechnologies Document ID A6V10889950_en--_j Edition 2022-01-05 © Siemens Switzerland Ltd, 2020 Technical specifications and availability subject to change without notice.
