A6V11282546 RDF880KN… Touch Screen Flush-mount Room Thermostats with KNX Communications Under Floor Heating (UFH) control application with an additional HMI for Variable Refrigerant Flow (VRF) commands via KNX S-Mode • Large display, touch screen with backlight • VRF HMI: adjust setpoint, fan mode, fan speed and operating modes • 2-position (ON/OFF) temperature control with potential free output for UFH via build-in / external temperature sensor • Display room temperature value (C) and relative humidity
Use More than just room temperature control via a connected VRF system or a UFH system or both: Typical applications: • Residential apartments • Small office or commercial buildings • Schools / Universities For the VRF HMI, the unit interfaces to VRF systems via a third party gateway for: • User application selection: - UFH only or VRF only or both • Setpoint adjustment: - maximum / minimum limitations • Fan speed adjustment: - auto / manual speeds (up to 7 speeds) • Operating mode selection: - AUTO, HEAT,
Applications RDF880KN... is designed to provide easy-to-understand HMI for any existing VRF system installed in residential homes and apartments where Under Floor Heating (UFH) room thermostat may be required at the same time. RDF880KN... has three kinds of applications including VRF HMI or UFH or both. Applications are selectable via DIP switches.
VRF Application (HMI only) For the VRF application, RDF880KN... provides an easy-to-understand HMI for adjusting frequent used operations of the VRF systems such as adjustments of temperature setpoint, fan speed, VRF operating mode, etc. Since all VRF brands have their own communication protocols between the remote control unit and VRF equipments (e.g. indoor or outdoor units), RDF880KN...
Other Heating Applications RDF880KN... is not limited to UFH applications but also for the following heating applications such as radiators, wall hung boilers, etc.
Type summary Product no. RDF880KN/NF RDF880KN 3) 2) 2) 3) 3-pos --- ON/OFF 1 1) 1 1) Suitable for DC 0..10 V --- Square conduit box 2) Round or square conduit boxes ON/OFF output with potential free input from AC 24…230 V Mounting frame (ARG800.1) is not included and must be ordered separately. (See “Accessories”) Additional mounting frame is not required. S55770-T398 S55770-T415 1) Control outputs Operating voltage Stock no.
c) for small valves 2.5 mm both QAH11.1 and QAP1030/UFH are for floor heating applications, such as temperature limitation controls. QAP1030/UFH has a special head and 4 m long that is more suitable for such application. d) Note: Refer to data sheets of the actuators for the maximum number of parallel operation. Accessories Designation Single mounting frame *), Ivory White Product no. / SSN Data sheet ARG800.
Mechanical design The thermostats consist of the following parts: • Front panel with electronics, operating elements and built-in room temperature and relative humidity sensors. • Mounting base with power electronics. • Mounting frame is an additional part to complete the installation for RDF880KN..., e.g. single or multi-frames. The rear of the mounting base contains the screw terminals. Slide the front panel in the mounting base and snap on.
Engineering notes See the "Reference documentation", page 21, 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.
Commissioning notes Before power up Select DIP switch setting is required for RDF880KN.... thermostats. COMMISSIONING: Download via ETS 1. DIP switch setting 2. First power up All in OFF positions 3. Touch & hold this icon > 5 s to enter Programming mode Press to turn ON 4. Ready for downloading address & application Touch “ON“ to exit COMMISSIONING: Local via DIP Switches 1.
LCD display Parameter Range Factory setting 1: COMF > PROT Operation Selector 2: COMF > ECON > PROT 1 Internal Relative Humidity Sensor OFF: Disable ON: Enable Maximum Fan Speed 1 to 7 Maximum autoswing 0: no swing function 1 to 10 positions 0 Chinese Text Display 0: Disable 1: Enable 0 End of wizard setup - - ON 3 If more details are required about parameters, refer to basic documentation CE1P3174. Reset To reload factory setting for all parameters, set parameter P71 to ON.
Applications RDF880KN… thermostats are for VRF HMI and heating applications. Configure or changing parameter settings during commissioning using one of the following tools: − Local HMI − Synco ACS − ETS5 Connect tool Connect the Synco ACS or ETS tools to the KNX bus cable at any point for commissioning: ACS and ETS5 require an interface: − Ethernet/LAN KNX interface (such as Siemens N148 / N146 / N152) − OCI702 USB-KNX interface Note: An external KNX bus power supply is required if an RDF880KN...
Setting parameters Parameter Service level parameters Name P02 User operating mode profile (mode button) 1 = Auto - Comfort Protection 1 = Auto - Comfort - Protection 2 = Auto - Comfort - Economy Protection P05 Sensor calibration (intern, extern) Standard temperature display 0K -5 K…+5 K 0 = Room Temperature or Relative Humidity 0 = Room Temperature or Relative Humidity 1 = Setpoint for Room Temperature P08 Comfort setpoint 21 °C P9 to P10 0.
Parameter Name P39 Operating action of X1 if digital input 0 = Normally open / Open 0 = Normally open / Open 1 = Normally closed / Close P40 Functionality of X2 0 = --- no function 0 = --- (no function) 1 = Room temp ext / Return temp (AI) 3 = Window open detection (DI) 6 = Fault input (DI) 7 = Monitor input [Digital] 8 = Monitor input [Temp] P41 Operating action of X2 if digital input 0 = Normally open / Open 0 = Normally open / Open 1 = Normally closed / Close P48 Minimum output on time 2po
Parameter Name P84 Heat distr.
Control parameters The thermostat's control parameters can be set to ensure optimum performance of the entire system (refer to basic documentation CE1P3174). The parameters can be adjusted using − Local HMI − Synco ACS − ETS5 For commissioning via local HMI, refer to user manual A6V11272225 for setting the passwords. Control sequence • Only heating sequence is available.
KNX S-Mode communication object Obj. Object Name Function Type Length CRWTU 4 Fault information alarm info 219.001 6 bytes CT 5 Fault state faulty/normal 1.005 1 bit CT 6 Fault transmission enable/disable 1.003 1 bit CWU 7 Room operating mode: Preselection HVAC mode 20.102 1 byte CWTU switch 1.001 1 bit CW switch 1.001 1 bit CW switch 1.001 1 bit CW switch 1.
Obj. Object Name Function Type Length CRWTU Descriptions / Selections: visibility depends on DIP switch setting CONTROL/STATUS: use for DIP switch Setting → 2: VRF It is a command to set the fan speed (ECM) – depends on value of P53. e.g. if P53 = 3, indicates the current fan speed as a value 0...100% Fan speed: preselection 35 percentage (0..100%) 5.
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 Power supply Caution Outputs Caution Inputs Rated voltage AC 230 V Overvoltage category Frequency Power consumption 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 24…230 V Min. 10 mA, Max. 5(2) A Control output Q11, Q12, Q14 (SPDT) Rating Min, Max resistive (inductive) No internal fuse.
Environmental conditions Storage Climatic conditions Transport Climatic conditions Operation Climatic conditions As per IEC 60721-3-1 Class 1K3 As per IEC 60721-3-2 Class 2K3 As per IEC 60721-3-3 Class 3K5 1) Standards and directives EU Conformity (CE) A6V11350285*) Electronic control type RCM conformity to EMC emission standard Safety class Pollution class Degree of protection of housing 2.
SELV 3171A01 Connection terminals L N X1 M L, N Q11, Q12 Q11, Q14 X1, X2 X2 CE+ CE- Q11 Q14 Q12 M CE+ CE- Operating voltage AC 230 V NC contact (for NO valves) NO contact (for NC valves) Multifunctional input for temperature sensor or potentialfree switch Factory setting: – X1 = Window contact – X2 = External sensor (function can be selected via parameter P38 / P40) Measuring neutral for sensor and switch KNX data + KNX data - L KNX AC 230 V 10 A L N S1 S2 B1 B2 X1 Q11 M Q14 X2 N1
Dimensions (mm) RDF880KN/NF for square conduit boxes only 23 / 26 Siemens Smart Infrastructure RDF880KN… Touch Screen Flush-mount Room Thermostats with KNX Communications A6V11282546_en--_e 2021-02-26
RDF880KN for round conduit boxes 24 / 26 Siemens Smart Infrastructure RDF880KN… Touch Screen Flush-mount Room Thermostats with KNX Communications A6V11282546_en--_e 2021-02-26
ARG800.
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., 2018 Technical specifications and availability subject to change without notice.
