Data Sheet for Product

ManualsBrandsSiemens ManualsThermostats (temperature controller with sensor)Environmental Product Declaration

Table Of Contents

CB1N3174en

2021-04-22

Smart Infrastructure

174

RDF800KN, RDF800KN/NF

RDF800KN/VB

Touch Screen Flush-mount

Room Thermostats with KNX

Communications

RDF800KN

RDF800KN/VB

RDF800KN/NF

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

• KNX bus communications (S-mode and LTE mode)

• 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.

• Independent function for window contact and presence detector

• 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, ETS5 or via local HMI

• Interoperation into Synco 700

• Integration into Desigo via group (ETS5) or via individual addressing

• Integration into third-party system via group addressing (ETS5)

• AC 230 V operating voltage

• RDF800KN, RDF800KN/VB: Mounting on round box, with min 60 mm

diameter or recessed square 86 mm box with 60.3 mm fixing centers and

min 40 mm depth

• RDF800KN/NF: Mounting on recessed square 86 mm box with 60.3 mm

fixing centers and min 40 mm depth, requires additional mounting frame

Summary of content (20 pages)

PAGE 1
3 174 RDF800KN, RDF800KN/NF Touch Screen Flush-mount Room Thermostats with KNX Communications RDF800KN/VB RDF800KN RDF800KN/VB RDF800KN/NF 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 • • • • • • • • • • • • • • • • • • • KNX bus communications (S-mode and LTE mode) 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 multifunction
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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 RDF800KN...
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• • • • • • • • • • 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 Wizard function for easy commissioning via HMI KNX bus (terminals CE+ and CE-) for communication with Synco or KNX compatible devices Display of time of day via KNX bus Display of outdoor temperature via KNX bus on INFO page Time scheduling and central control of setpo
PAGE 4
Applications for fan coil systems Application and output signal, DIP switches, diagram • 2-pipe fan coil unit (heating or cooling) ON/OFF • 2-pipe fan coil unit with el.
PAGE 5
Applications for Universal systems Application and output signal, DIP switches, diagram ON/OFF ON/OFF (heating or cooling) 1 2 3 3191S11 B2 ON D3 T • Chilled / heated ceiling with electric heater (heating or cooling) ON/OFF B2 D3 T V1 ON 1 2 3 3191S12 • Chilled / heated ceiling 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
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Applications for heat pump systems Application and output signal, DIP switches, diagram ON/OFF ON ON/OFF (heating or cooling) 2 3 3181S31 1 D3 • 1-stage compressor with electric heater (heating or cooling) ON/OFF ON 1 2 3 3181S32 • 1-stage compressor 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 N1 Thermostat Terminal Y1: Heating (H&C) or Heating/Cooling Terminal Y2: Cooling (H&C) E1 Electric heater B1 Return ai
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Type summary Control outputs Product no. Stock no. Operating voltage RDF800KN RDF800KN/NF S55770-T350 AC 230 V 3-pos 1 1) S55770-T335 AC 230 V 1 1) 2) RDF800KN/VB Color ON/OFF 2 1) Suitable conduit box Round conduit box White 2 1) Square conduit box 2) White S55770-T429 AC 230 V 2 1) Round conduit box Black 1 1) 1) Selectable: ON/OFF or 3-position 2) Mounting frames are not included and must be ordered separately.
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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) Electromotoric actuator, 3-position (for small valves 5.5 mm) Product no. Data sheet SSA31... 4893 SSP31… 4864 SSB31... 4891 SSC31… 4895 SSD31...
PAGE 9
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. • Mounting frame is an additional part to complete the installation for RDF800KN/NF. The rear of the mounting base contains the screw terminals. Slide the front panel in the mounting base and snap on.
PAGE 10
Engineering notes See the "Reference documentation", 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 between bookshelves, behind curtains, above or near heat sources, or exposed to direct solar radiation. Mount about 1.5 m above the floor.
PAGE 11
Commissioning notes Before power up Set DIP switches to select the desired application before power up: 1. For remote setup via commissioning tools, set all DIP switches to OFF (see "Remote configuration" for more details); 2. For local setup, set DIP switches to select applications (refer to the following table).
PAGE 12
LCD display Parameter Range Factory setting 0: --- No function 1: Ext / Return Temp (AI) Functionality of X1 2: H/C changeover (AI/DI) 3: Window open detect (DI) 4: Dew point sensor (DI) 5: Enable electr.
PAGE 13
Control parameters The thermostat's control parameters can be set to ensure optimum performance of the entire system (refer to basic documentation P3174). The parameters can be adjusted using − Local HMI − Synco ACS − ETS5 For commissioning via local HMI, refer to user manual B3174... for setting the passwords. Control sequence • The control sequence may need to be set via parameter P01 depending on the application.
PAGE 14
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.
PAGE 15
Environmental conditions Standards and directives Environmental compatibility General Reference documentation Synco Desigo 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 0…49 °C < ± 0.5 K ± 3.0 K 0.5 °C 0.
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L N SELV 3171A01 Connection terminals X1 M L, N Q1 Q2 Q3 Y1,Y2 X2 CE+ CE- Q1 Q2 Q3 Y1 Y2 Operating voltage AC 230 V Control output "Fan speed 1 AC 230 V" Control output "Fan speed 2 AC 230 V" Control output "Fan speed 3 AC 230 V" Control output "Valve" AC 230 V (N.O., for normally closed valves), output for compressor or output for electrical heater Multifunctional input for temperature sensor (such as QAH11.
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Dimensions (mm) RDF800KN/NF for square conduit boxes only 17 / 20 Siemens Smart Infrastructure RDF800KN… Touch Screen Flush-mount Room Thermostats with KNX Communications CB1N3174en 2021-04-22
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RDF800KN, RDF800KN/VB for round conduit boxes 18 / 20 Siemens Smart Infrastructure RDF800KN… Touch Screen Flush-mount Room Thermostats with KNX Communications CB1N3174en 2021-04-22
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ARG800.
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Issued by Siemens Switzerland Ltd Smart Infrastructure Global Headquarters Theilerstrasse 1a CH-6300 Zug Tel. +41 58 724 2424 www.siemens.com/buildingtechnologies Siemens Smart Infrastructure © Siemens Switzerland Ltd, 2014 - 2021 Technical specifications and availability subject to change without notice.