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Theben VARIA 826 S KNX Manual

Room thermostat with display
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VARIA 826 S KNX Multi-functional display with room thermostat
Room thermostat with display
VARIA 826 S KNX
VARIA 826 S KNX
8269210 /8269211
Updated: Sep-14 (Subject to change)
Page 1 of 182

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Summary of Contents for Theben VARIA 826 S KNX

  • Page 1 VARIA 826 S KNX Multi-functional display with room thermostat Room thermostat with display VARIA 826 S KNX VARIA 826 S KNX 8269210 /8269211 Updated: Sep-14 (Subject to change) Page 1 of 182...

  • Page 2: Table Of Contents

    VARIA 826 S KNX Multi-functional display with room thermostat Contents Functional characteristics ....................6 Integrated functions ....................6 Special features ......................6 Operation ........................7 Technical data ........................8 Technical data ......................8 "Varia 824 / 826 S KNX EIB V1.2" application programme ........9 Selection in the product database ................
  • Page 3 VARIA 826 S KNX Multi-functional display with room thermostat Settings menu ......................89 4.2.1 PIN code ....................... 89 4.2.2 Date and time ....................... 90 4.2.3 Temperature ......................90 4.2.4 Time program ....................... 91 4.2.4.1 Time program overview page ..............92 4.2.4.2...
  • Page 4 VARIA 826 S KNX Multi-functional display with room thermostat Fan coil actuator control ..................122 5.6.1 Devices: ......................122 5.6.2 Overview ......................122 5.6.3 Important parameter settings ................123 5.6.3.1 Varia ......................123 5.6.3.2 FCA 1 ......................123 5.6.3.3 Presence detector ..................124 5.6.3.4...
  • Page 5 VARIA 826 S KNX Multi-functional display with room thermostat 6.10.3 Case 3: Heating with 2-point control and cooling with continuous control ... 154 6.10.4 Case 4: Heating and cooling with 2-point control .......... 154 6.11 Operating mode selection ..................155 6.11.1...

  • Page 6: Functional Characteristics

    VARIA 826 S KNX Multi-functional display with room thermostat 1 Functional characteristics 1.1 Integrated functions • Room thermostat for heating and cooling operation with additional heating stage. • 8 channel time switch: 1 channel for controlling HVAC mode of a room thermostat and 7 free channels.

  • Page 7: Operation

    VARIA 826 S KNX Multi-functional display with room thermostat 1.3 Operation UP cursor Menu Menu key DOWN cursor Increase value / reverse status Confirm entry Reduce value / reverse status Updated: Sep-14 (Subject to change) Page 7 of 182...

  • Page 8: Technical Data

    VARIA 826 S KNX Multi-functional display with room thermostat 2 Technical data 2.1 Technical data Operating voltage KNX Bus voltage 21..32V DC Current consumption KNX bus <= 10mA (without key light) <= 24mA (with 100% key light) Installation type Flush-mounted wall installation...

  • Page 9: "Varia 824 / 826 S Knx Eib V1.2" Application Programme

    VARIA 826 S KNX Multi-functional display with room thermostat 3 "Varia 824 / 826 S KNX EIB V1.2" application programme 3.1 Selection in the product database Theben AG Manufacturer Product family Heating, ventilation, air conditioning Product type Controller with display and operating function Varia 82x: RTR with display and operating function.

  • Page 10: Communication Objects

    VARIA 826 S KNX Multi-functional display with room thermostat 3.2 Communication Objects Table 2: Overview Type & Flags Object name Function C R W T Defining the setpoint 2 byte    Base setpoint value temperature 9.001 2 byte ...
  • Page 11 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Flags Type & Object name Function C R W T 1 byte    Cooling actuating value (%) Send actuating value 5.001 ON/OFF actuating value 1 bit  ...
  • Page 12 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Type & Flags Object name Function C R W T 2 byte    Send temperature in K 9.002 2 byte    Send temperature in °C 9.001 1 byte ...
  • Page 13 VARIA 826 S KNX Multi-functional display with room thermostat Flags Type & Object name Function C R W T 1 bit     Dimming On/Off 1.001 Operation page 1, line 1 1 bit     Blinds Step/Stop 1.001...
  • Page 14 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Type & Flags Object name Function C R W T     See Object 39 Page 2 line 4     See Object 40   ...
  • Page 15 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Type & Flags Object name Function C R W T     See Object 39 Page 5 line 2     See Object 40   ...

  • Page 16: Description Of Objects

    VARIA 826 S KNX Multi-functional display with room thermostat 3.2.1 Description of objects • Object 0 "Base setpoint value" The base setpoint value is first specified at start-up and stored in the base setpoint value. It can be reset at any time using object 0 (limited by minimum or maximum valid setpoint value).
  • Page 17 VARIA 826 S KNX Multi-functional display with room thermostat Table 4 Format of Object function Example adjustment value Absolute Transmits the amount: Unadjusted base setpoint value = Unadjusted base setpoint value 20ºC. Set point adjustment = +2 K + setpoint correction as setpoint value for additional temperature The object transmits: 22 ºC...
  • Page 18 VARIA 826 S KNX Multi-functional display with room thermostat • Object 7 "Operating mode preset", "Night <-> standby" The function of this object depends on the objects for setting operating mode parameter on the RTR setting parameter page. Table 5...
  • Page 19 VARIA 826 S KNX Multi-functional display with room thermostat • Object 8 "Presence" / "comfort" The function of this object depends on the objects for setting operating mode parameter on the RTR setting parameter page. Table 6 Objects for determining the operating...
  • Page 20 VARIA 826 S KNX Multi-functional display with room thermostat • Object 9 "Window position" / "frost/heat protection" The function of this object depends on the objects for setting operating mode parameter on the RTR setting parameter page. Table 7 Objects for determining the operating...
  • Page 21 VARIA 826 S KNX Multi-functional display with room thermostat • Object 12 "Current operating mode" Transmits the current operating mode as a 1 byte value (see below: Coding of operating modes). The send response can be set on the RTR setting parameter page.
  • Page 22 VARIA 826 S KNX Multi-functional display with room thermostat • Object 17 "PWM cooling actuating value" Sends a PWM signal (ON/OFF) that corresponds to the current actuating value. See appendix: cycle. • Object 18 "Report heating/cooling operation", "switch between heating and cooling"...
  • Page 23 VARIA 826 S KNX Multi-functional display with room thermostat • Object 21 "Hotkey function" The hotkey function is available on the RTR and on the weather page. Pressing one of the buttons on the right (+, OK or -) triggers the sending of a switching telegram.
  • Page 24 VARIA 826 S KNX Multi-functional display with room thermostat • Object 24 "send time", "receive time" The function of the object depends on the objects time and date function parameter on the general parameter page. Table 10 Function of time and date objects...
  • Page 25 VARIA 826 S KNX Multi-functional display with room thermostat • Object 27 "Outside temperature" Receives the current outside temperature, e.g. from a weather station (order no. 132 9 201). The received value can appear on the weather display page and is needed as a reference for calculation of the set point value adjustment at high outside temperatures.
  • Page 26 VARIA 826 S KNX Multi-functional display with room thermostat • Object 39 "Text in relation to index to day" Parameter: Function Show weather forecast on page 1 Receives the relevant forecast day in text form, e.g. Today, tomorrow, the day after tomorrow, day 3.
  • Page 27 VARIA 826 S KNX Multi-functional display with room thermostat • Object 45 "Air temperature" Parameter: Function Show weather forecast on page 1 Receives the relevant air temperature forecast for the displayed time period in ºC. See appendix: Weather forecasts with Meteodata 139.
  • Page 28 VARIA 826 S KNX Multi-functional display with room thermostat • Object 51 "Wind force" Parameter: Function Show weather forecast on page 1 Receives the relevant wind speed forecast for the displayed time period in km/h. See appendix: Weather forecasts with Meteodata 139.
  • Page 29 VARIA 826 S KNX Multi-functional display with room thermostat • Objects 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113, 115, 117 "Display page 1..
  • Page 30 0 = Off • Object 121 "Select favourite pages" If a 1 is received, the display changes from VARIA 826 S KNX to the set favourite page. The favourite page is set on the select display pages parameter page. Important:This function is only available with the VARIA 826. S KNX.

  • Page 31: Parameter

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3 Parameter 3.3.1 Parameter pages Table 14 Name Description General Heating/cooling, language, releases, summer time rule etc. RTR setting Operating modes, presence detector, fan control etc. Heating setpoint values Base setpoint value, reductions, offset.

  • Page 32: Parameter Description

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2 Parameter description 3.3.2.1 The General parameter page Table 15 Designation Values Description Settings menu on Selection of settings menu device on device: disabled Operation not possible. enabled Possible at any time...
  • Page 33 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Description Language after unchanged The language set by the user remains download unchanged after download. German Desired menu language after English download. French Italian The language of the weather...
  • Page 34 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Description Summer time rules adjustable on device The desired summer time rule can be set directly on the device. (Settings menu  Date and time). none No summer time changeover required.
  • Page 35 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Description Is mains supply no, only bus supply obsolete connected? Updated: Sep-14 (Subject to change) Page 35 of 182...

  • Page 36: The Rtr Setting Parameter Page

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.2 The RTR setting parameter page Table 16 Designation Values Meaning CONTROL Heating operation only Heating control only Heating and cooling an additional cooling system can be controlled Important: If this parameter...
  • Page 37 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Description Type of presence sensor The presence sensor activates (to Obj. 8) comfort operating mode. Presence detector Comfort operating mode as long as the presence object is set*.
  • Page 38 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Description Time for comfort extension 30 min. This determines how long 1 hour VARIA should remain in 1.5 hours comfort mode after the 2 hours presence button is pressed.
  • Page 39 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning Temperature display on The current room temperature Actual value, setpoint value only RTR page when operated is displayed on the RTR page. The setpoint value is revealed by pressing a button.

  • Page 40: Heating Setpoint Values Parameter Page

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.3 Heating setpoint values parameter page Table 17 Designation Values Meaning Base setpoint value after 16 °C, 17 °C, 18 °C, 19 °C Output setpoint value for loading the application 20 °C, 21 °C, 22 °C, 23 °C temperature control.
  • Page 41 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning Manual offset works only in comfort mode In which operating modes can the setpoint value be changed through setpoint value with comfort and standby mode adjustment via object or...
  • Page 42 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning Send current setpoint How often should the value in cycles currently valid setpoint value be sent? Only send in the event of a not cyclical, only in the event of change change.

  • Page 43: Cooling Setpoint Values Parameter Page

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.4 Cooling setpoint values parameter page: Table 18 Designation Values Meaning Dead zone between 1 K, 2 K, 3 K Specifies the buffer zone heating and cooling 4 K, 5 K, 6 K between setpoint values in heating and cooling modes.

  • Page 44: Heating Control Parameter Page

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.5 Heating control parameter page Table 19 Designation Values Meaning Number of heating stages Choice of 1- or 2-stage Only one heating stage Main stage and additional stage heating Type of control...
  • Page 45 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning PWM time for cooling 2 min. An actuation cycle consists of ON/OFF Heating 3 min. a switch-on and a switch-off process 5 min. 10 min. and forms a PWM period.
  • Page 46 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: User-defined parameters Integrated time of heating pure P control Professional setting: control 15 min., 30 min., 45 min. See appendix: Response of 60 min., 75 min., 90 min. the PI controller 105 min., 120 min., 135 min.

  • Page 47: Cooling Control Parameter Page

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.6 Cooling control parameter page Table 20 Designation Values Meaning Type of control Infinite control Continuous control (0 .. 100%). 2 point control Switching control (On/Off). See appendix: Continuous and switching control...
  • Page 48 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning Sending the cooling With change of 1 % After how much % change* actuating value With change of 2 % in the control variable is the With change of 3 % new value to be sent.
  • Page 49 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning 2-point control Hysteresis of 2 wire 0.3 K Interval between the switch- control for cooling 0.5 K off point (setpoint value) and 0.7 K the turn back on point (setpoint value –...
  • Page 50 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning User-defined parameters Proportional band of the 1 K, 1.5 K, 2 K, 2.5 K Professional setting for cooling control 3 K, 3.5 K, 4 K, 4.5 K adapting control response to 5 K, 5.5 K, 6 K, 6.5 K...

  • Page 51: Additional Heating Stage Parameter Page

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.7 Additional heating stage parameter page Table 21 Designation Values Meaning Type of control Infinite control Continuous control (0 .. 100%). 2 point control Switching control (On/Off). See appendix: Continuous and...
  • Page 52 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning 2 point control Hysteresis of 2 point 0.3 K Interval between the switch- control 0.5 K off point (setpoint value) and 0.7 K the turn back on point (setpoint value –...

  • Page 53: Actual Value Parameter Page

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.8 Actual value parameter page Table 22 Designation Values Meaning Object function external VARIA measures and not used actual value controls room temperature via the internal sensor. take average with internal actual...
  • Page 54 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning "Actual value malfunction" always cyclically Error status is always sent: telegram 1 = Actual value error 0 = No error Only report cyclically in the Error status is only sent if no...

  • Page 55: Fan Stages Parameter Page

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.9 Fan stages parameter page This parameter page is only available if the fan stage control has been activated on the RTR setting parameter page. Table 23 Designation Values Meaning Number of fan stages...

  • Page 56: Setpoint Value Adjustment Parameter Page

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.10 Setpoint value adjustment parameter page The parameters on this page depend on the setting of the set point value adjustment with high outside temperatures parameter on the RTR setting page.
  • Page 57 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning Unadjusted base setpoint 15 °C, 16 °C, 17 °C (Only with format = value 18 °C, 19 °C, 20 °C absolute). 21 °C, 22 °C, 23 °C This is the base setpoint value 24 °C, 25 °C, 26 °C,...

  • Page 58: Select Display Pages Parameter Page

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.11 Select display pages parameter page Table 26 Designation Values Meaning Show [weather data] Should the display page for page? weather data be used on the device? Show page 1 for display...
  • Page 59 VARIA 826 S KNX Multi-functional display with room thermostat Continuation Designation Values Meaning Select favourites page via object only The favourite page can be selected via object 121. It can, for example, be used as an "alarm page" and selected as required.

  • Page 60: Weather Data Parameter Page

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.12 Weather data parameter page For displaying the current measured values, e.g. from a Theben weather station. Table 27 Designation Values Meaning Temperature unit °C The temperature is displayed in °C.

  • Page 61: Weather Forecast Parameter

    VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning Display before receipt of What is displayed if no value telegrams have been received and the object, therefore, does not have a defined status? The display remains empty.

  • Page 62: Parameter Page Page 1, Forecast Day

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.1 Parameter page page 1, forecast day. Format of the 1st line: Selected forecast day, today, tomorrow, the day after tomorrow, day 3). Only visible if the Show weather forecast on page 1 parameter is set to yes.

  • Page 63: Parameter Pages Page_1, Time Interval

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.1 Parameter pages page_1, time interval. Format of the 2nd line: Selected 6 hr time interval, 00:00-06:00, 06:00-12:00 etc. Only visible if the Show weather forecast on page 1 parameter is set to yes.

  • Page 64: Parameter Pages Page_1, Weather

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.1 Parameter pages page_1, weather. Format of the 3rd line: anticipated weather scenario for the selected time interval, sunny, cloudy, etc. Only visible if the Show weather forecast on page 1 parameter is set to yes.

  • Page 65: Parameter Pages Page_1, Temperature

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.1 Parameter pages page_1, temperature. Format of the 4th line: Anticipated air temperature for the selected time interval. Only visible if the Show weather forecast on page 1 parameter is set to yes.

  • Page 66: Parameter Pages Page_1, Precipitation

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.1 Parameter pages page_1, precipitation. Format of the 5th line: Precipitation probability for the selected time interval. Only visible if the Show weather forecast on page 1 parameter is set to yes.

  • Page 67: Parameter Pages Page_1, Precipitation Amount

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.1 Parameter pages page_1, precipitation amount. Format of the 6th line: Anticipated precipitation amount for the selected time interval. Only visible if the Show weather forecast on page 1 parameter is set to yes.

  • Page 68: Parameter Pages Page 1, Wind Force

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.1 Parameter pages page 1, wind force Format of the 7th line: Anticipated wind speed for the selected time interval. Only visible if the Show weather forecast on page 1 parameter is set to yes.

  • Page 69: Display Objects Parameter Pages, Page 1

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.2 Display objects parameter pages, page 1..5 Table 36 Designation Values Meaning Page heading (22) Manual input Customer-specific heading for the relevant page. Maximum text length: 22 characters Favourite line on page...

  • Page 70: Line 1 To Page 5, Line 8 Parameter

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.3 Page 1, line 1 to page 5, line 8 parameter pages VARIA has 5 display pages for individual applications. See appendix: Freely programmable display pages. 3.3.2.3.1 Common parameters Table 37...
  • Page 71 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning Line format Object type: dimming Dimmer control with 2 objects: Brighter/darker (4 bit) and On/Off Object type: temperature A temperature value can, for example, be sent as a setpoint...
  • Page 72 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning Line format Object type: show text string A freely chosen 14-character text (14 byte) can be received and displayed from the bus. Object type: valuator Here, the user can choose from 8 separate predefined values (0..255).
  • Page 73 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning Display before receipt of Corresponding object value Displays the value which is value after reset allocated the 0 value depending on object type. Examples: 0.00 0.0 °C etc.
  • Page 74 VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.3.2 Specific parameters according to object type Important: Certain parameters only become visible when the allow changes to object value? parameter is set to yes. Certain parameters can be faded out or renamed depending on the setting.
  • Page 75 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning Percentage value object type Text at object value = 0 Text entry: Text to be displayed at 0% Maximum 7 characters value Increment 1 %, 2 %, , 5 %, 10 %...
  • Page 76 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning Dimming process is Releasing the button The dimming value changes stopped by as long as the + or – button is pressed or a final value is reached (0% or 100 %).
  • Page 77 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning EIS 5 object type Unit for display object Text entry: Abbreviation for the unit that Maximum 3 characters goes with the value, e.g. Increment how much should the value...
  • Page 78 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning lower adjustable scene 1..64 Determines the number range number of the scenes used. Only visible if Allow change upper adjustable scene 1..64 of object value ? parameter =...
  • Page 79 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning Object type: Blinds/shutters Movement is stopped by Releasing the button The drive operates for as long as the button is pressed or the end position is reached.
  • Page 80 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning Object type: valuator Use which of the following Value 1 only This type of valuator allows values? individually predefined values Values 1 and 2 Values 1-3 to be directly selected and...
  • Page 81 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning Object type: floating-point number (DPT 14.xxx) Unit for display object Text entry: Abbreviation for the unit that Maximum 3 characters goes with the value, e.g. pcs Fixed display with 2 decimal points.

  • Page 82: Text List Parameter Page

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.4 Text list parameter page Table 39 Designation Values Meaning Text 1 (10) Text entry: The entered texts can replace … Maximum 10 characters values or scene numbers from Text 40 (10) page 1..5, lines 1..8 parameter...

  • Page 83: Time Program Channel 1 (For Rtr) Parameter Page

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.5 Time program channel 1 (for RTR) parameter page Table 40 Designation Values Meaning Name of channel manual input Input of description for (max. 8 characters) channel 1 (e.g. heating) Type of switching program HVAC operating mode...
  • Page 84 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning Reaction after unlocking Operating mode of switching As soon as the channel is program starts immediately unlocked the RTR takes up the prescribed operating mode from the time program.

  • Page 85: Time Program Channel 2

    VARIA 826 S KNX Multi-functional display with room thermostat 3.3.2.6 Time program channel 2..8 parameter pages Table 41 Designation Values Meaning Name of channel manual input Input of description for (max. 8 characters) channel (e.g. "light 1") Type of switching program Type of telegrams to be sent.
  • Page 86 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning Switching program after Which program is to be active download after downloading? unchanged The program that was active before the download should continue. Mon-Fri: 06:00 – 22:00 On or...
  • Page 87 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Designation Values Meaning Change switching program disabled Can the user change the time via user enabled program? Reaction after unlocking Only send status after next Only send when the channel change status changes.

  • Page 88: Start-Up

    VARIA 826 S KNX Multi-functional display with room thermostat 4 Start-up 4.1 Activate program mode The program mode can be motivated in 2 different ways.  Move a magnet along the right upper side of the device  Menu  Settings  System  Select Prog Mode and set to active using the + button.

  • Page 89: Settings Menu

    VARIA 826 S KNX Multi-functional display with room thermostat 4.2 Settings menu The SETTINGS menu is opened using the menu button. A PIN code may be required depending on configuration. 4.2.1 PIN code If PIN code protection is configured (Parameter page General, settings menu on device = released by PIN), after selecting Menu ...

  • Page 90: Date And Time

    VARIA 826 S KNX Multi-functional display with room thermostat 4.2.2 Date and time Select the line to be changed with the buttons. Press OK: The value to be changed is blacked out. Use +/- to change the value and move to the next value by pressing OK.

  • Page 91: Time Program

    VARIA 826 S KNX Multi-functional display with room thermostat 4.2.4 Time program There are 8 channels (time programs) available. Both customer-specific and preset switching programs can be selected. The programs are weekly programs with a minimum time interval of 15 minutes.

  • Page 92: Time Program Overview Page

    VARIA 826 S KNX Multi-functional display with room thermostat 4.2.4.1 Time program overview page Set cursor using the buttons to time program and confirm by pressing OK This page is used to display time programs for each channel. t i m e p r o g r a m C h a n n e l 1 : N o p r o g .
  • Page 93 VARIA 826 S KNX Multi-functional display with room thermostat Table 43: Program options depending on selected type of time program (ETS). Type of switching program Switching times HVAC On/Off 3 steps Program 1 Mon-Fri: 06:00 - 22:00 Comfort Stage 3...

  • Page 94: Display, Enter Or Change Programs

    VARIA 826 S KNX Multi-functional display with room thermostat 4.2.4.2 Display, enter or change programs t i m e p r o g r a m C h a n n e l 1 : O w n p r o g...
  • Page 95 VARIA 826 S KNX Multi-functional display with room thermostat The buttons have new functions in the detailed view. These are shown as symbols on the display next to the relevant buttons. The cursor above the time bar points to the selected 15 minute segment.
  • Page 96 VARIA 826 S KNX Multi-functional display with room thermostat B a c k Type of time program: 3 stage Table 46: Button symbols Button Symbol Button function Select operating mode: Current cursor function is displayed by the arrow : See next table.

  • Page 97: Language

    VARIA 826 S KNX Multi-functional display with room thermostat Program entry: The symbol is highlighted in black : With the help of the arrow buttons cursor can be moved to the desired position (time) for programming. Select the desired status (or stage) via the button, which will be highlighted in black.

  • Page 98: Display

    VARIA 826 S KNX Multi-functional display with room thermostat 4.2.6 Display Table 48 Menu item Description Button sound What does a beep signify on pressing the buttons? Button light Should the display backlighting come on for 30 seconds when the buttons are pressed? Max.

  • Page 99: Freely Programmable Display

    VARIA 826 S KNX Multi-functional display with room thermostat 4.3 Freely programmable display pages VARIA has 5 freely programmable display pages with 8 independent, freely programmable lines that can be activated on the select display pages parameter pages (parameter fade in page x for display objects).
  • Page 100 VARIA 826 S KNX Multi-functional display with room thermostat Table 49: Overview of line formats Line format Parameters Length Object type Entered text Line texts Line texts 1 bit Switch on object type KNX 1.001 Text at object value = 0 / 1...

  • Page 101: Operation

    VARIA 826 S KNX Multi-functional display with room thermostat 4.3.1 Operation The value or status can only be changed if the changing the object value parameter is set to yes. Otherwise, values and statuses can only be displayed. Only the amendable lines can be selected using the buttons;...
  • Page 102 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: Line format Permit changing object value parameter Object type: Blinds/shutters Briefly press button: + button = step up or stop + button = step down or stop The reaction if the button is pressed longer depends on setting of the Movement is stopped by stopping the dimmer process.

  • Page 103: Hints On Setting Up

    VARIA 826 S KNX Multi-functional display with room thermostat 4.3.2 Hints on setting up pages The line format = entered text, i.e. pure text line, can prove helpful in different cases, e.g. as an empty line, as a supplementary line or provide assistance to the user:...
  • Page 104 VARIA 826 S KNX Multi-functional display with room thermostat Case 3: Display advice for user: A whole page can be used to provide brief operating advice Example: I N S T R U C T I O N S P a g e s e l e c t i o n : w i t h <...

  • Page 105: Favourite Page

    VARIA 826 S KNX Multi-functional display with room thermostat 4.3.3 Favourite page The favourite page is set on the select display pages parameter page. It can be selected in 2 different ways: Automatically or via object 121. 4.3.3.1 Favourite page as standard display page The select favourite page parameter on the display page range parameter page is set to: Via object and after 3 minutes not in use.

  • Page 106: Troubleshooting

    VARIA 826 S KNX Multi-functional display with room thermostat 4.4 Troubleshooting Response Potential causes Remedy Display backlighting Download was interrupted or Bus voltage interrupted flashes*, LCD display is not completed Press down and hold empty. Menu and OK buttons simultaneously.

  • Page 107: Typical Applications

    VARIA 826 S KNX Multi-functional display with room thermostat 5 Typical applications These typical applications are designed to aid planning. Some individual functions or devices of an overall system are only shown for illustration purposes. Therefore these examples have no claim to completeness and may be adjusted or extended arbitrarily.

  • Page 108: Overview

    VARIA 826 S KNX Multi-functional display with room thermostat 5.1.2 Overview Figure 1 5.1.3 Objects and links Table 51 Meteodata 139 EFR VARIA 826 S Comment Object name Object name Line Today, tomorrow, the Text message in Text in relation to index...

  • Page 109: Important Parameter Settings

    VARIA 826 S KNX Multi-functional display with room thermostat 5.1.4 Important parameter settings Standard or customer-defined parameter settings apply for unlisted parameters. Table 52: Meteodata 139 EFR Parameter page Parameter Setting Weather forecast User-specific period (from Select 6 hr period via obj.

  • Page 110: Display Weather Data And Air Quality

    VARIA 826 S KNX Multi-functional display with room thermostat 5.2 Display weather data and air quality 5.2.1 Devices: • VARIA 826 / 826 S KNX (8269200, 8269210, 8269211) • Amun 716 (716 9 200) • Weather station (132 9 201 5.2.2 Overview...

  • Page 111: Important Parameter Settings

    VARIA 826 S KNX Multi-functional display with room thermostat Table 55 Amun 716 VARIA Comment Object name Object name Display page 1, line 1 - Display on freely CO2 value EIS 5 value programmable pages Display page 1, line 2 -...
  • Page 112 VARIA 826 S KNX Multi-functional display with room thermostat Table 57: Weather station Parameter page Parameter Setting Measured values Send wind speed in the event 20 %, but at least 1 m/s of a change of Send wind speed km/h...

  • Page 113: Blinds Or Shutter / Awning Control

    VARIA 826 S KNX Multi-functional display with room thermostat 5.3 Blinds or shutter / awning control Blinds, shutters or awnings are controlled via line 1 on display page 1 by pressing the +/- buttons. The difference between blinds and shutter control is determined by the configuration of the blinds actuator.

  • Page 114: Jmg 4S

    VARIA 826 S KNX Multi-functional display with room thermostat 5.3.3.2 JMG 4S Parameter page Parameter Setting GM JMG 4S Type of curtain Blinds Shutter / awning / general drive 5.3.4 Objects and links Table 60: VARIA VARIA JMG 4S Comment...

  • Page 115: Conservatory Control

    VARIA 826 S KNX Multi-functional display with room thermostat 5.4 Conservatory control 5.4.1 Devices: • VARIA 826 / 826 S KNX (8269200, 8269210, 8269211) • Amun 716 (716 9 200) • Weather station (132 9 201) 5.4.2 Overview Figure 4...

  • Page 116: Objects And Links

    VARIA 826 S KNX Multi-functional display with room thermostat 5.4.3 Objects and links Table 61 Weather station VARIA Comment Object name Object name Brightness value Brightness Display on the weather page Temperature value Outside temperature Display on the weather page...

  • Page 117: Important Parameter Settings

    VARIA 826 S KNX Multi-functional display with room thermostat 5.4.4 Important parameter settings The standard parameter settings apply for unlisted parameters. Table 63: VARIA Parameter page Parameter Setting Select screens Show [weather data] page? Show page 1 for display objects...
  • Page 118 VARIA 826 S KNX Multi-functional display with room thermostat Table 65: Amun 716 Parameter page Parameter Setting Measured values Send CO2 content on change 200 ppm Send CO2 content cyclically every 10 minutes Send humidity value in the event of a change of...

  • Page 119: Heating Control, Basic Configuration

    VARIA 826 S KNX Multi-functional display with room thermostat 5.5 Heating control, basic configuration Varia controls a Cheops actuator. A window contact, on a TA 2 binary input sends the window status. 5.5.1 Devices: • VARIA 826 / 826 S KNX (8269200, 8269210, 8269211) •...

  • Page 120: Objects And Links

    VARIA 826 S KNX Multi-functional display with room thermostat 5.5.3 Objects and links Table 66 VARIA Cheops drive Comment Object name Object name Heating actuating value Actuating value RTR output actuator Table 67 TA 2 VARIA Comment Object name Object name...

  • Page 121: Important Parameter Settings

    VARIA 826 S KNX Multi-functional display with room thermostat 5.5.4 Important parameter settings Standard or customer-defined parameter settings apply to unlisted parameters. 5.5.4.1 Varia Table 68 Parameter page Parameter Setting RTR setting CONTROL Heating control only Objects for determining the...

  • Page 122: Fan Coil Actuator Control

    5.6.1 Devices: • VARIA 826 / 826 S KNX (8269200, 8269210, 8269211) • FCA 1 (Order no. 492 0 200) • Presence detector (e.g. Theben HTS Eco-IR 180, 360 or Compact Office*) 5.6.2 Overview Figure 6 Updated: Sep-14 (Subject to change)

  • Page 123: Important Parameter Settings

    VARIA 826 S KNX Multi-functional display with room thermostat 5.6.3 Important parameter settings The standard parameter settings apply for unlisted parameters. 5.6.3.1 Varia Table 70 Parameter page Parameter Setting RTR setting CONTROL Heating and cooling Objects for determining the new: operating mode,...

  • Page 124: Presence Detector

    VARIA 826 S KNX Multi-functional display with room thermostat 5.6.3.3 Presence detector Table 71: Presence detector (e.g. Eco-IR 180, 360 or Compact Office*) Parameter page Parameter Setting General data Normal or test operation mode Standard operation HVAC switch output* Active...

  • Page 125: Objects And Links

    VARIA 826 S KNX Multi-functional display with room thermostat 5.6.4 Objects and links Table 73: VARIA VARIA FCA 1 Comment Object name Object name FCA receives the actuating Heating actuating value Heating actuating value value heating from VARIA FCA receives the actuating...

  • Page 126: Heating Control With 6 Heating Circuits And Window Monitoring For Caretakers

    VARIA 826 S KNX Multi-functional display with room thermostat 5.7 Heating control with 6 heating circuits and window monitoring for caretakers. Combined with 5 RAM 712 Varia controls 6 rooms (rooms 1-6), with window contacts and presence detectors, via a HMT 6 with thermal actuators.

  • Page 127: Overview

    VARIA 826 S KNX Multi-functional display with room thermostat 5.7.2 Overview Figure 7 Updated: Sep-14 (Subject to change) Page 127 of 182...

  • Page 128: Important Parameter Settings

    VARIA 826 S KNX Multi-functional display with room thermostat 5.7.3 Important parameter settings Standard or customer-defined parameter settings apply to unlisted parameters. 5.7.3.1 Varia Table 76 Parameter page Parameter Setting RTR setting CONTROL Heating control only Objects for determining the...
  • Page 129 VARIA 826 S KNX Multi-functional display with room thermostat 5.7.3.2 TA 2 Table 77 Parameter page Parameter Setting Channel 1 Channel function Switch/push button Debounce time 100 ms Object type Switching (1-bit) Response to rising edge ON (OFF*) Response to falling edge...

  • Page 130: Ram 712

    VARIA 826 S KNX Multi-functional display with room thermostat 5.7.3.3 RAM 712 Parameter page Parameter Setting Settings CONTROL standard Function of external active interface Operating mode Objects for determining the Operating mode, presence, operating mode window status Presence sensor type Presence buttons (to obj.

  • Page 131: Objects And Links

    VARIA 826 S KNX Multi-functional display with room thermostat 5.7.4 Objects and links Table 78: Varia window status and presence sensor feedback VARIA Object name Comment Object name Window status for the Window position RTR (frost protection) 1 = window open...
  • Page 132 VARIA 826 S KNX Multi-functional display with room thermostat Continuation: VARIA Object name Comment Object name Display page 1, Window status for display line 5 (1 = window open) Input 1 switching Central address for all window contacts. Select favourites page...
  • Page 133 VARIA 826 S KNX Multi-functional display with room thermostat Table 79: Actuating value for the heating actuator HMT 6 Object name Comment Object name Heating actuating Actuating value Control of actuator value (%) channel 1 room 1 Heating actuating Actuating value...

  • Page 134: Appendix

    VARIA 826 S KNX Multi-functional display with room thermostat 6 Appendix 6.1 Weather forecasts with Meteodata 139 EFR KNX Display page 1 can be used in conjunction with the weather data receiver Meteodata 139 EFR KNX to display weather forecasts directly.

  • Page 135: Fan Forced Mode

    VARIA 826 S KNX Multi-functional display with room thermostat 6.2 Fan forced mode This function enables the manual selection of fan stage on the RTR display page of the device. The fan coil actuator or the fan control is moved into forced mode.
  • Page 136 VARIA 826 S KNX Multi-functional display with room thermostat Example: Threshold value Set values for Recommended values VARIA for FCA 1 Fan stage 20 % 10 % 50 % 40 % 80 % 70 % If fan stage 2 is selected using the button, object 22 sends control variable 50 %.

  • Page 137: Pwm Cycle

    VARIA 826 S KNX Multi-functional display with room thermostat PWM cycle 6.3.1 Basic principle The 50% control variable is converted into switch-on/switch-off cycles in order to achieve a heating output of 50%. The actuator is switched on for 50% of the time and switched off for 50% of the time over a fixed period (10 minutes in our example).

  • Page 138: Response To Changes In The Control Variable

    VARIA 826 S KNX Multi-functional display with room thermostat 6.3.2 Response to changes in the control variable Every change in the control variable is immediately transferred to the PWM cycle in order to respond to changes in the quickest possible time.

  • Page 139: Operating Mode Scene

    VARIA 826 S KNX Multi-functional display with room thermostat 6.4 Operating mode scene 6.4.1 Principle The current operating mode can be saved with the scene functions and restored later at any time. The current operating mode is allocated to the appropriate scene number when a scene is saved.

  • Page 140: Calling Scenes

    VARIA 826 S KNX Multi-functional display with room thermostat 6.4.3 Calling scenes: The appropriate retrieval code is sent to Object 20 to call a scene. Table 84 Retrieval code Scene Hex. Dec. Example: Call operating mode with scene 5: → Send $04 to Obj. 20.

  • Page 141: Create And Display Scene Telegrams

    VARIA 826 S KNX Multi-functional display with room thermostat 6.5 Create and display scene telegrams Varia can send and display 1..5 scene telegrams on the user-specific display pages. These can also be sent, if necessary, by a common group address to Object 20 to control the...

  • Page 142: Allot Scene Numbers Text

    VARIA 826 S KNX Multi-functional display with room thermostat 6.5.1 Allot scene numbers text An up to 10 character long text can be displayed in place of a scene number. Configuration is completed on the page of the relevant line (e.g. page 2, line 1).
  • Page 143 VARIA 826 S KNX Multi-functional display with room thermostat Only scene numbers 20 to 29 are permitted in the following example. That means the lower adjustable scene number = 20. Texts 5..14 are allocated. Table 88: Scenes 20..29 with texts 5..14...

  • Page 144: Setpoint Value Adjustment

    VARIA 826 S KNX Multi-functional display with room thermostat 6.6 Setpoint value adjustment The setpoint adjustment enables a dynamic adjustment of the setpoint to the outdoor temperature when cooling. This function prevents too great a temperature deviation between the outside area and the cooled interior with high outside temperatures.

  • Page 145: Format Of Setpoint Adjustment: Relative

    VARIA 826 S KNX Multi-functional display with room thermostat 6.6.1 Format of setpoint adjustment: Relative Setpoint adjustment is sent from object 2 as a temperature differential. Under the setpoint adjustment threshold (setpoint adjustment from) the value 0 is sent. If the set point value threshold is exceeded, the set point value is increased each time by 1 K if the outdoor temperature has risen above the configured value (adjustment).
  • Page 146 VARIA 826 S KNX Multi-functional display with room thermostat Table 90: Adjustment values Outside temp. 1K/1K 1K/2K 1K/3K 1K/4K 1K/5K 1K/6K 1K/7K 10 K 11 K 12 K 13 K 14 K 15 K Updated: Sep-14 (Subject to change) Page 146 of 182...

  • Page 147: Format Of Setpoint Adjustment: Absolute

    VARIA 826 S KNX Multi-functional display with room thermostat 6.6.2 Format of setpoint adjustment: Absolute Object 2 sends the adjusted setpoint value to the bus for additional room thermostat. This setpoint value consists of: Unadjusted base setpoint + dead zone + adjustment.
  • Page 148 VARIA 826 S KNX Multi-functional display with room thermostat Table 91: Setpoint values Outside temp. 1K/1K 1K/2K 1K/3K 1K/4K 1K/5K 1K/6K 1K/7K 22.00 22.00 22.00 22.00 22.00 22.00 22.00 22.00 22.00 22.00 22.00 22.00 22.00 22.00 22.00 22.00 22.00 22.00 22.00...

  • Page 149: Temperature Control

    VARIA 826 S KNX Multi-functional display with room thermostat 6.7 Temperature control 6.7.1 Introduction If the VARIA is not configured as a switching controller, it can alternatively be configured as a P or as a PI controller, whereby PI control is preferable.

  • Page 150: Response Of The P-Control

    VARIA 826 S KNX Multi-functional display with room thermostat 6.7.2 Response of the P-control Max. 4l/Min. Set point value Bandwidth Actual value Losses 1l/Min A filling volume of 15l gives rise to a control deviation of 211 – 151 = 61 As our actual value lies outside the bandwidth, the control will operate the flow rate at 100% i.e.

  • Page 151: Response Of The Pi Controller

    VARIA 826 S KNX Multi-functional display with room thermostat P-control as temperature control The P-control response during heating control is as shown in the previous example. The setpoint temperature (21°C) can never quite be reached. The permanent control deviation increases as the heat loss increases and decreases as the ambient temperature decreases.

  • Page 152: Continuous And Switching Control

    VARIA 826 S KNX Multi-functional display with room thermostat 6.8 Continuous and switching control A switching (2 point) control recognises only 2 statuses, On or Off. A continuous control works with a control variable between 0% and 100% and can thus exactly measure out the energy input.

  • Page 153: Positive Hysteresis

    VARIA 826 S KNX Multi-functional display with room thermostat 6.9.2 Positive hysteresis Heating lasts until the temperature reaches "setpoint value + hysteresis " threshold has been achieved. The heating is only switched on again when the temperature falls below the setpoint value.

  • Page 154: Case 2: Heating With 2-Point Control And Cooling With Continuous Control

    VARIA 826 S KNX Multi-functional display with room thermostat 6.10.2 Case 2: Heating with 2-point control and cooling with continuous control Cooling setpoint value 25 ºC DEAD ZONE 4 K Heating hysteresis 1 K Heating setpoint value 20 °C The dead zone (4 K) is increased by the value of the hysteresis (1K) and offsets the cooling setpoint value to 25 °C.

  • Page 155: Operating Mode Selection

    VARIA 826 S KNX Multi-functional display with room thermostat 6.11 Operating mode selection 6.11.1 Priorities for operating mode selection The operation mode selection between comfort, standby, night operation and frost protection happen in 4 different ways: • Via object 7 operating mode selection •...

  • Page 156: Determining The Current Operation Mode

    VARIA 826 S KNX Multi-functional display with room thermostat 6.11.2 Determining the current operation mode The current setpoint value can be adjusted to the relevant requirements via the choice of operation mode. The operating mode can be specified by objects 7..9.
  • Page 157 VARIA 826 S KNX Multi-functional display with room thermostat Operating mode guideline via.. Button Object 7 Last Time prog.* command applies Scene Operating mode after download Produces.. Frost protection* Night Presence Standby Window Comfort Current Operating mode Comfort Frost protection...

  • Page 158: Old Operating Modes

    VARIA 826 S KNX Multi-functional display with room thermostat 6.11.2.2 Old operating modes If objects for determining the operating mode = old:... selected on the RTR setting parameter page then the current operating mode is set out as follows: Table 95...

  • Page 159: Determining The Setpoint Value

    VARIA 826 S KNX Multi-functional display with room thermostat 6.11.2.3 Determining the setpoint value 6.11.2.3.1 Calculating the setpoint value in heating operation See also: Base setpoint value and current setpoint value Table 96: Current set point value during heating Operating mode...
  • Page 160 VARIA 826 S KNX Multi-functional display with room thermostat 6.11.2.3.2 Calculating the setpoint value in cooling operation Table 97: current setpoint value during cooling Operating mode Current setpoint value Comfort Base setpoint value + Setpoint value offset + dead zone...

  • Page 161: Setpoint Offset

    VARIA 826 S KNX Multi-functional display with room thermostat 6.12 Setpoint offset For VARIA, the current setpoint value can be adjusted in 2 ways. • step by step with the + and – buttons on the RTR page • via Object 1 "Manual setpoint value offset"...

  • Page 162: Setpoint Temperature Offset Via Object 1

    VARIA 826 S KNX Multi-functional display with room thermostat 6.12.2 Setpoint temperature offset via object 1 In this case, the setpoint value is changed by sending the desired offset to object 1. This involves the differential to the base setpoint value (may be preceded by a minus sign) being sent to object 1 in EIS5 format.

  • Page 163: Base Setpoint Value And Current Setpoint Value

    VARIA 826 S KNX Multi-functional display with room thermostat 6.13 Base setpoint value and current setpoint value The base setpoint value is the standard temperature for the comfort mode and the reference temperature for reduction in standby and night modes.

  • Page 164: Setpoint Value Calculation

    6.13.1 Setpoint value calculation Operation mode Comfort - Standby Base setpoint Manual - Night Heating mode limitations setpoint Safety offset limitations Frost prot. Actual Base setpoint + / - setpoint Komfort Cooling mode + Standby + Dead zone + Night Heat prot.

  • Page 165: Maximum Text Length According To Line Format

    6.14 Maximum text length according to line format Max. length Object type Text elements Page heading Object type Parameter Entered Line texts text Line texts Text with 1 bit Switching Obj. value = 0 DPT 1.001 Text with Obj. value = 1 Line texts percentage Text at object value...

  • Page 166: Template For Documentation Of Use Of Freely Programmable

    6.15 Template for documentation of use of freely programmable pages. Display Object type and text length page Heading Object no. Length for page User texts 22 14 14 14 14 12 11 12 11 11 20 12 - 11 10 1 2 3 4 5 Length 1.

  • Page 167: Operating Instructions

    VARIA 826 S KNX Multi-functional display with room thermostat 7 Operating instructions Updated: Sep-14 (subject to change) Page 167 of 182...
  • Page 168 VARIA 826 S KNX Multi-functional display with room thermostat Updated: Sep-14 (subject to change) Page 168 of 182...
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