RDF800 RDF800/NF Touch screen flush-mount standalone room thermostats For 2-pipe, 2-pipe with electrical heater, and 4-pipe fan coil units For universal applications For use with compressors in DX type equipment • • • • • • • • • • • • • • • • A6V101123362_en--_d 2019-10-29 Touch screen Large display with backlight 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.
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 electrical heater • 4-pipe fan coil units • Chilled /heated ceiling • Chilled /heated ceiling and electrical heater • Chilled ceiling and radiator / under floor heating • Compressors in DX-type equipment • Compressors in DX-type equipment with electrical heater The room thermostats are delivered with a fixed set of applications.
Applications for fan coil systems Application and output signal, DIP switches, diagram ON/OFF • 2-pipe fan coil unit with el.
Applications for Universal systems Application and output signal, DIP switches, diagram ON/OFF ON B2 2 3 3191S11 1 D3 T • Chilled / heated ON/OFFceiling with electric heater (heating or cooling) ON/OFF B2 D3 T V1 ON 1 2 3 3191S12 • Chilled / heated ceiling (heating or cooling) V1 T B1 T B1 E1 N1 • Chilled / heated ceiling (heating or cooling) T 3-position 2 3 D3 T V1 ON 1 3191S11 B2 • Chilled ceiling and radiator ON/OFF (heating and cooling) ON 1 N1 2 3 3191S13 T D3
Applications for heat pump systems Application and output signal, DIP switches, diagram ON/OFF ON 2 3 3181S31 1 • 1-stage compressor ON/OFF with electric heater (heating or cooling) ON/OFF D3 ON 1 2 3 3181S32 • 1-stage compressor (heating or cooling) D3 T T B1 B1 E1 T • 1-stage compressor (heating and cooling) N1 ON/OFF T N1 ON 2 3 3181S35 1 D3 T B1 T N1 Thermostat E1 Electric heater N1 B1 Return air temperature sensor or external room temperature sensor (optional) D3 Dew
Type summary Product no. Stock no. RDF800 S55770-T396 RDF800/NF S55770-T397 2) Application Fan coil, universal heat pump Operating voltage AC 230 V Control outputs 3-pos 1 1) Suitable for ON/OFF 2 1) Round or square conduit boxes Square conduit boxes 2) Fan coil, AC 230 V 1 1) 2 1) universal heat pump 1) Selectable: ON/OFF or 3-position according to applications. 2) Mounting frames are not included and must be ordered separately.
3-position actuators Note: Type of unit Electrical actuator, 3-position (for radiator valve) Electrical actuator, 3-position (for small valve 2.5 mm) Electrical actuator, 3-position (for small valve 5.5 mm) Electrical actuator, 3-position (for 2- and 3-port valves / V…P45) Electrical actuator, 3-position (for small valve 5.5 mm) Product no. Data sheet SSA31... 4893 SSP31… 4864 SSB31... 4891 SSC31… 4895 SSD31... 4861 Electromotoric actuator, 3-position (for small valves 5.
Mechanical design The thermostats consist of the following parts: • Front panel with electronics, operating elements and built-in room temperature sensor. • Mounting base with power electronics. • Additional mounting frame is required for RDF800/NF to complete the installation while RDF800 unit comes with its own mounting frame. The rear of the mounting base contains the screw terminals. Slide the front panel in the mounting base and snap on.
Operations Function Touch to select setpoint mode; adjust temperature value using +/–. to select fan mode; adjust fan speed using +/ –. Touch Touch to select operating mode; select ON/ECO/OFF using +/ –. Touch to select the INFO screen, display room using / if available. to select the desired H/C control sequence using +/– if manual H/C changeover (P01 = 2) is selected. to display alarms if the icon is displayed; use / icon to select different alarms for viewing.
Setting parameters using the local HMI Wake up the thermostat by touching the screen display. Entering the Service level Factory setting for the Service level password is 00 00. 1. Touch and hold down the number to 00 using /. icon for 5 seconds. Then set the first 2-digit 2. Touch the last 2-digit number and set it to 00 using /. 3. After 3 seconds, P (successful login) or F (fail to login) is displayed. 4. If the login failed, reenter the correct password as per step 1 above.
P01 Factory setting Range 2-pipe: 1 = cooling only 0 = heating only 1 = cooling only 2 = H/C changeover manual 3 = H/C changeover auto 4 = heating and cooling 1 = Comfort – Protection 2 = Comfort - Economy – Protection 0 = °C 1 = °F – 5...+5 K ✓ 0 = room temperature 1 = setpoint 5...40 °C ✓ RDF800..
Range 45 min 16 °C 0...120 min 10…25 °C ✓ ✓ 28 °C 27…40 °C ✓ 3 = window contact ✓ P46 P38, P40 P38, P40 P40 ✓ P38 ✓ P38 ✓ P40 ✓ P46 RDF800.. Dependencies Factory setting Parameter Name Expert level P35 P36 Integral action time Tn P38 H/C changeover switching point cooling H/C changeover switching point heating Input X1 P39 Normal position input X1 0 (NO.) P40 Input X2 1 = ext. sensor P41 Normal position input X2 0 (NO.
Range Periodic fan kick Comfort Periodic fan kick Eco Service filter Protection heating setpoint Protection cooling setpoint Fan start delay OFF OFF OFF (0) 8 °C 0…89 min, OFF(90) 0…359 min, OFF(360) OFF, 100…9900 h OFF, 5…WCoolProt; WCoolProt = 40 °C max. OFF, WHeatProt… 40; WHeatProt = 5°C min. 0...
Mounting and installation Mount the room thermostat on a conduit box. Do not mount on a wall in niches or between bookshelves, behind curtains, above or near heat sources, or exposed to direct solar radiation. Mount about 1.5 m above the floor. Mounting / Dismounting Wiring • Do not apply excessive force on screws! The deformation of the mounting frame may lead to improper connections and operation of the unit.
Commissioning notes Before power up Set DIP switches to select the desired application before power up: Commissioning method DIP switches LCD display Applications APP 2P 2-pipe APP 2PEH 2-pipe with electric heater APP 4P 4-pipe APP 2P3P 2-pipe with 3-position output Local setup After DIP switch setting, complete the installation and power up the thermostat. Notes: Wizard Other DIP switch position will have no effect, i.e.
LCD display Parameter Operating action of X1 Operating action of X2 - Range Factory setting Normal Open (NO) Normal Close (NC) Normal Open (NO) End of wizard - If more details are required about parameters, refer to basic documentation P3174. Reset To re-load the factory settings for all parameters, set the parameter P71 to ON. Restart the thermostat after reset. All LCD segments flash, indicating that the reset is correct.
Operation Room temperature out of range When the room temperature is out of the measuring range (that is, above 49 °C or below 0 °C), - - - will be displayed. In addition, the heating output is activated if the current setpoint is not set to "OFF", the thermostat is in heating mode and the temperature is below 0 °C. For all other cases, no output is activated. The thermostat resumes Comfort mode after the temperature returns to the measuring range.
Technical data Power supply Caution Outputs Rated voltage Overvoltage category Frequency Power consumption AC 230 V III 50/60 Hz Max. 6.0 VA / 2.1 W No internal fuse! External preliminary protection with max C 10 A circuit breaker required in all cases. AC 230 V Min. 5 mA, Max. 5(2) A Fan control Q1, Q2, Q3-N Rating min, max resistive (inductive) STOP Note! Fans must NOT be connected in parallel! Connect one fan directly, for additional fans, one relay for each speed.
Built-in room temperature sensor Measuring range Accuracy at 25 °C Temperature calibration range Settings and display resolution Setpoints Current temperature value displayed Storage Climatic conditions Transport Climatic conditions Operation Climatic conditions Environmental conditions Standards and directives 0…49 °C < ± 0.5 K ± 3.0 K 0.5 °C 0.
Connection diagrams L AC 230 V 10 A 2-pipe / heating or cooling – ON/OFF L S1 S2 B1 B2 X1 X2 M 1-stage compressor − C1 = Heating and / or − C2 = Cooling 1-stage compressor and electric heater Example1: With SUA21/3 2-pipe fan coil application N1 M1 V1 V1, V2 E1 C1, C2 S1, S2 V1 M1 5(2)A Max. B1, B2 5(2)A Max. 2-pipe, / heating or cooling – 3-position − Y1 = Open − Y2 = Close 4-pipe / Heating and radiator − V1 = Heating − V2 = Cooling Y2 N1 Y1 N Q1 Q2 Q3 I II III N 2-pipe and el.
Dimensions (mm) RDF800/NF for square conduit boxes only ARG800.
RDF800 for round conduit boxes 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.
