Vaillant VRC 720f/3 Operating And Installation Instructions
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Vaillant VRC 720f/3 Operating And Installation Instructions

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VRC 720f/3
en Operating and installation instructions
en Country specifics

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Summary of Contents for Vaillant VRC 720f/3

  • Page 1 VRC 720f/3 en Operating and installation instructions en Country specifics...
  • Page 2 Operating and installation instructions .... 3 Country specifics..........63...

  • Page 3: Table Of Contents

    Operating and installation Fault and maintenance messages ....54 Fault..............54 instructions Fault message ............. 55 Contents Maintenance message ........55 Cleaning the outdoor temperature sensor ... 55 Changing the batteries......... 55 Safety ..............4 Action-related warnings ......... 4 -- Replacing the outdoor temperature Intended use ............

  • Page 4: Safety

    Safety This product can be used by children aged from 8 years and above and persons with Action-related warnings reduced physical, sensory or mental capabil- ities or lack of experience and knowledge if Classification of action-related warnings they have been given supervision or instruc- The action-related warnings are classified in tion concerning use of the product in a safe accordance with the severity of the possible...

  • Page 5: Safety/Regulations

    ▶ Insert the batteries, making sure that the poles are the right way round. ▶ Remove the dead batteries from the product and dispose of them correctly. ▶ Remove the batteries if you intend to store the product and not use it for an extended period and/or to scrap it.

  • Page 6: Product Description

    Product description What is a fixed value control? The system control regulates the flow temperature to two Which nomenclature is used? fixed temperatures, which are independent from the room or outdoor temperature. This control is suitable for a door air –...

  • Page 7: What Is Meant By "Time Period

    – The MENU | CONTROL | Cooling for several days function is activated. – The competent person has activated the MENU | SETTINGS | Installer level | Installation configur- ation | Installation | Automatic cooling: function. 24 °C The function automatically switches between heating and cooling mode.

  • Page 8: Setting The Heat Curve

    2.12 Setting the heat curve 2.13.1 Control elements – Calling up the menu – Back to the main menu – Confirming a selection/change – Saving set values – One level back – Cancelling input – Navigating through the menu structure –...

  • Page 9: Operating And Display Functions

    2.14 Operating and display functions Note The functions described in this section are not available for all system configurations. To call up the menu, press twice. 2.14.1 Menu item CONTROL MENU CONTROL Zone Heating Mode: Manual Uninterrupted retention of the desired temperature Desired temperature: °C What do the different temperatures mean? (→...
  • Page 10 Weekly planner Up to twelve time periods can be set per day Within the time periods, the Target flow temp., desired: °C is used. Outside of the time periods, the Target flow temp., set-back: °C is used or the heating circuit is switched off. At a Target flow temp., set-back: °C = 0 °C, the frost protection can no longer be guaranteed.
  • Page 11 Air quality limit: ppm The ventilation unit keeps the CO content in the room air below the set value. Ventilation boost Heating mode is switched off for 30 minutes and, if available, the ventilation unit runs at the highest ventilation level. Humidity prevention When the Max.
  • Page 12 Heating Current month, Last month, Current year, Last year, Total Current month, Last month, Current year, Last year, Total Installation Current month, Last month, Current year, Last year, Total Heat recovery Amount of energy saved by the ventilation unit Burner status: Current burner status of the connected boiler Air quality sensor 1: Measures the CO...
  • Page 13 Tariffs The hybrid manager uses the tariffs and the heat demand to calcu- late the costs for the back-up boiler and the heat pump. The more cost-effective component is used for the heat generation. Tariff for back-up boiler: Enter a gas, oil or electricity tariff. The tariff must refer to the same unit of measurement as the electricity tariff for the heat pump, e.g.
  • Page 14 Bival. point The heat generator is selected based on the outdoor temperature ( Heating bivalence point: °C and Alternative point:). Heating bivalence point: °C If the outdoor temperature falls below the set value, the system control enables the back-up boiler to operate in parallel with the heat pump in heating mode.
  • Page 15 The back-up boiler does not support the heat pump. The back-up boiler is activated for the anti-legionella function, frost protection or de-icing. Heating The back-up boiler supports the heat pump during heating. The back-up boiler is activated for the anti-legionella function. The back-up boiler supports the heat pump during domestic hot water generation.
  • Page 16 FM5 configuration: Each configuration corresponds to a defined FM5 terminal assign- ment (→ Section 4.5). The terminal assignment determines which functions contain the inputs and outputs. Select the configuration that suits the installation that is installed. FM3 configuration: Each configuration corresponds to a defined FM3 terminal assign- ment (→...
  • Page 17 Target return temperature: °C Select a temperature at which the heating water should flow back into the floor-standing boiler. Factory setting: 30 °C OT switch-off threshold: °C Enter the upper limit for the outdoor temperature. If the outdoor temperature rises above the set value, the system control deactiv- ates heating mode.
  • Page 18 Room temp. mod.: The installed temperature sensor measures the current room tem- perature. The system control calculates a new target room temper- ature that is used to adjust the flow temperature. – Difference = Set target room temperature - current room tem- perature –...
  • Page 19 Cylinder: If there is an existing domestic hot water cylinder, the Active set- ting must be selected. Factory setting: Active Target flow temperature: °C Target value for the flow temperature during cylinder charging Cylinder charging pump: Display of the current control command at the cylinder charging pump Circulation pump: Display of the current control command at the circulation pump...
  • Page 20 Max. DHW targ. flow temp.: °C Setting the maximum buffer cylinder target flow temperature for the domestic hot water station. The set maximum target flow temperat- ure must be lower than the maximum flow temperature for the heat generator. If the maximum target flow temperature is set too low, the domestic hot water station cannot reach the target temperature.
  • Page 21 Maximum temperature: °C Set the maximum cylinder charging temperature for the cylinder protection. If the temperature at the bottom cylinder temperature sensor is higher than the set maximum cylinder charging temperature, the solar charging is interrupted. The solar charging is only enabled again once the temperature at the bottom cylinder temperature sensor has fallen by between 1.5 K and 9 K, depending on the maximum temperature.

  • Page 22: Electrical Installation, Set-Up

    Installing the radio receiver unit -- Electrical installation, set-up The radio receiver unit can be installed on a heat generator Obstacles weaken the reception strength between the radio or on a ventilation unit with connected heat generators. receiver unit and the system control or outdoor temperature When installing the radio receiver unit on a heat generator, sensor.

  • Page 23: Installing The Outdoor Temperature Sensor

    Condition: Ventilation unit connected to the eBUS without VR 32, Ventila- tion unit without eBUS heat generator ▶ Connect the radio receiver unit to the eBUS interface in the ventilation unit's electronics box using an extension cable. Condition: Ventilation unit connected to the eBUS with VR 32, Ventilation unit with up to two eBUS heat generators ▶...
  • Page 24 3.5.4 Mounting the wall base to the wall Remove the wall base as shown in the figure. Open the system control's battery compartment as shown in the figure. Ø 6 Insert the batteries, making sure that the poles are the right way round.

  • Page 25: Installing The System Control

    Condition: The display is on, System control reception strength < 4 ▶ Find an installation site for the system control that is within the reception range. Condition: The display is on, System control reception strength ≥ 4 ▶ Mark the position on the wall where the reception strength is sufficiently high.
  • Page 26 Fitting the system control Fit the system control to the unit mounting bracket as shown in the figure, making sure that it clicks into place. Operating and installation instructions 0020288151_04...

  • Page 27: Using The Functional Modules, Basic System Diagram, Start-Up

    -- Using the functional modules, basic system diagram, start-up System without functional modules VRC 720f eBUS Simple systems with a direct heating circuit do not require a functional module. System with FM3 functional module FM3 (VR 70) VRC 720f VR 92f eBUS Systems with two heating circuits that must be controlled separately from each other require the FM3 functional module.

  • Page 28: System With Fm5 And Fm3 Functional Modules

    System with FM5 and FM3 functional modules FM5 (VR 71) FM3 (VR 70) VRC 720f VR 92f eBUS Systems with two or more mixed heating circuits require the FM5 functional module. The system may comprise the following: – Maximum 1 x FM5 functional module –...

  • Page 29: Connection Assignment For The Fm5 Functional Module

    4.4.3 FM3 and FM5 functional modules If the FM3 and FM5 functional modules are installed in a system, each additional installed FM3 functional module adds two mixed heating circuits to the system. The potential configuration (FM3+FM5) corresponds to a defined terminal assignment for the FM3 (→ Section 4.6) functional module.

  • Page 30: Connection Assignment For The Fm3 Functional Module

    Configur- ation – SysFlow BufBt BufBtCH BufTop BufBt DEM1 DEM2 DEM3 Meaning of the abbreviations (→ Section 4.9.2) Sensor assignment Configura- tion – – – VR 10 VR 10 VR 10 VR 10 VR 10 VR 10 VR 11 VR 10 VR 10 VR 10 –...

  • Page 31: Settings For The Basic System Diagram Codes

    Sensor assignment Configuration – – – – – FM3+FM5 VR 10 VR 10 – – – – VR 10 VR 10 VR 10 Settings for the basic system diagram codes The systems are roughly grouped according to their connected system components. Each grouping contains a basic system diagram code that you must enter in the Basic system diagram code: function in the system control.
  • Page 32 4.7.4 Heat pump as a single unit (hybrid) With external back-up boiler A back-up boiler (with eBUS) is connected via the VR 32 (address 2). A back-up boiler (without eBUS) is connected to the output for the heat pump or the heat pump control module for the ex- ternal back-up boiler.

  • Page 33: Combinations Of Basic System Diagram And Configuration Of Functional Modules

    Combinations of basic system diagram and configuration of functional modules You can use the table to check the selected combination of the basic system diagram code and the configuration of func- tional modules. Basic System With With FM5 With Without system FM5, Configuration...

  • Page 34: Basic System Diagram And Wiring Diagram

    Basic system diagram and wiring diagram 4.9.1 Validity of the basic system diagrams for radio controls All of the basic system diagrams that are included in these instructions also apply for radio controls, even if the basic system diagrams and wiring diagrams in this document each show wired controls, i.e.
  • Page 35 4.9.1.1 Sample basic system diagrams 0020288151_04 Operating and installation instructions...
  • Page 36 4.9.1.2 Sample wiring diagrams Operating and installation instructions 0020288151_04...
  • Page 37 4.9.2 Meaning of the abbreviations Abbreviation Meaning 9k[x] 3-port mixing valve Abbreviation Meaning Cooling 3-port mixing valve Heat generator Thermostatic mixing valve Domestic hot water back-up boiler Flow meter (TacoSetter) Heating back-up boiler Cascade valve Domestic hot water/heating back-up boiler Thermometer Air-to-water heat pump Manometer...
  • Page 38 Abbreviation Meaning Cooling signal Transmission system operator interface Solar yield Solar yield sensor SysFlow System temperature sensor TD1, TD2 Temperature sensor for a differential temper- ature control Switch contact for remote control Isolating circuit with switching floor-standing boiler Operating and installation instructions 0020288151_04...
  • Page 39 4.9.3 Basic system diagram 0020184677 4.9.3.1 Setting on the system control Basic system diagram code: 1 0020288151_04 Operating and installation instructions...
  • Page 40 4.9.3.2 Basic system diagram 0020184677 Operating and installation instructions 0020288151_04...
  • Page 41 4.9.3.3 Wiring diagram 0020184677 0020288151_04 Operating and installation instructions...
  • Page 42 4.9.4 Basic system diagram 0020178440 4.9.4.1 Setting on the system control Basic system diagram code: 1 FM3 configuration: 1 FM3 MO: Circulation pump Circuit 1 / Circuit type: Heating Circuit 2 / Circuit type: Heating Zone 1/ Zone activated: Yes Zone 2/ Zone activated: Yes Operating and installation instructions 0020288151_04...
  • Page 43 4.9.4.2 Basic system diagram 0020178440 0020288151_04 Operating and installation instructions...
  • Page 44 4.9.4.3 Wiring diagram 0020178440 Burn. 24V= Operating and installation instructions 0020288151_04...
  • Page 45 4.9.5 Basic system diagram 0020177912 4.9.5.1 Special features of the system 8: At least 35% of the nominal flow rate must always be able to flow through a reference room without an individual room temperature control valve. 4.9.5.2 Settings on the system control Basic system diagram code: 8 Circuit 1 / Room temp.
  • Page 46 4.9.5.4 Basic system diagram 0020177912 Operating and installation instructions 0020288151_04...
  • Page 47 4.9.5.5 Wiring diagram 0020177912 0020288151_04 Operating and installation instructions...
  • Page 48 4.9.6 Basic system diagram 0020280010 4.9.6.1 Special features of the system 5: The cylinder temperature cut-out must be installed in a suitable location in order to avoid cylinder temperatures above 100 °C. 4.9.6.2 Settings on the system control Basic system diagram code: 1 FM5 configuration: 2 FM5 MO: Anti-legio.
  • Page 49 4.9.6.4 Basic system diagram 0020280010 0020288151_04 Operating and installation instructions...
  • Page 50 4.9.6.5 Wiring diagram 0020280010 Operating and installation instructions 0020288151_04...
  • Page 51 4.9.7 Basic system diagram 0020260774 4.9.7.1 Special features of the system 17: Optional component 4.9.7.2 Setting on the system control Basic system diagram code: 1 FM5 configuration: 6 Circuit 1 / Circuit type: Heating Circuit 1 / Room temp. mod.: Active or Expanded Circuit 2 / Circuit type: Heating Circuit 2 / Room temp.
  • Page 52 4.9.7.4 Basic system diagram 0020260774 Operating and installation instructions 0020288151_04...
  • Page 53 4.9.7.5 Wiring diagram 0020260774 0020288151_04 Operating and installation instructions...

  • Page 54: Start-Up

    In the system control, navigate to the function MENU -- Start-up | SETTINGS | Installer level | Installation config- uration | Circuit | Cooling possible: and confirm by Prerequisites for starting up pressing Yes. – The system control and outdoor temperature sensor have Navigate to the function MENU | SETTINGS | Installer been installed and wired.

  • Page 55: Fault Message

    Fault message with the text of the fault message appears in the display. You can find fault messages under: MENU → SETTINGS → Installer level → Fault history Troubleshooting (→ Appendix B.2) Maintenance message with the text of the maintenance message appears in the display.

  • Page 56: Replacing The Outdoor Temperature Sensor

    Disposing of a defective outdoor temperature sensor Note The outdoor temperature sensor has a reserve power supply lasting approximately 30 days. Dur- ing this time the outdoor temperature sensor con- tinues to send radio signals even if defective. If the outdoor temperature sensor is defective and within range of the radio receiver unit, the radio receiver unit receives signals from the defective yet intact outdoor temperature sensor.

  • Page 57: Information About The Product

    Ordinance no. 811/2013, 812/2013 with Directive 2014/53/EU. The complete text for the EU De- claration of Conformity is available at: http://www.vaillant- On units with integrated weather-compensated controls, in- group.com/doc/doc-radio-equipment-directive/. cluding a room thermostat function that can be activated, the...

  • Page 58: Technical Data

    Technical data Pollution degree 7.9.1 System control Level of protection IP 44 Protection class Battery type LR06 75 ℃ Temperature for the ball pressure test Rated surge voltage 330 V −40 to 60 ℃ Permissible operating temperature 868.0 to Frequency band Height 110 mm 868.6 MHz...

  • Page 59: Appendix

    Appendix Troubleshooting, maintenance message Troubleshooting Symptom Possible cause Measure Display remains dark The batteries are flat Change all the batteries. (→ Section 6.5) If the fault persists, inform the competent person. Display: Mode: Back-up heater Heat pump does not work Inform the competent person.

  • Page 60: Troubleshooting

    Troubleshooting Code/meaning Possible cause Measure ▶ Ventilation unit communica- The cable is defective Replace the cable. tion interrupted ▶ Incorrect plug connection Check the plug connection. F.509 ▶ HP control module commu- The cable is defective Replace the cable. nication interrupted ▶...

  • Page 61: Maintenance Messages

    Code/meaning Possible cause Measure HP control module MO2 con- Incorrectly connected FM5 Remove the FM5. figuration not correct Select another configuration. F.1249 ▶ FM5 configuration not correct Incorrect set value for the FM5 Set the correct set value for the FM5. F.1251 ▶...

  • Page 62: Index

    Index Reading the article number ..........57 Reading the serial number ..........57 Article number ..............57 Recycling/disposing of packaging ........57 Attaching the unit mounting bracket, to the wall....25 Regulations ................5 Attaching, system control to the unit mounting bracket..25 Replacing the outdoor temperature sensor ......
  • Page 63 Country specifics Lista de Servicios Técnicos Oficiales: ES, Spain Garantía Vaillant le garantiza que su producto dispondrá de la Garan- tía Legal y, adicionalmente, de una Garantía Comercial, en los términos y condiciones que puede consultar a través de PT, Portugal la página Web www.vaillant.es, o llamando al número de te-...
  • Page 64 Supplier Vaillant Saunier Duval, S.A.U Polígono Industrial Ugaldeguren III Parcela 22 48170 Zamudio Teléfono +34 94 48 96 200 Atención al Cliente +34 910 77 88 77 0020288151_04 Servicio Técnico Oficial +34 910 779 779 www.vaillant.es Vaillant Group International GmbH Berghauser Strasse 40 D-42859 Remscheid Tel.

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