Vaillant ecoTEC pro 24 Installation And Maintenance Instructions Manual
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Vaillant ecoTEC pro 24 Installation And Maintenance Instructions Manual

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Installation and maintenance instructions
Publisher/manufacturer
Vaillant GmbH
Berghauser Str. 40
D-42859 Remscheid
Tel. +49 21 91 18‑0
Fax +49 21 91 18‑2810
www.vaillant.de
ecoTEC pro
VUW ..6/5-3
GB, IE
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  • Page 1 Installation and maintenance instructions ecoTEC pro VUW ..6/5-3 GB, IE Publisher/manufacturer Vaillant GmbH Berghauser Str. 40 D-42859 Remscheid Tel. +49 21 91 18‑0 Fax +49 21 91 18‑2810 [email protected] www.vaillant.de...

  • Page 2: Table Of Contents

    Contents Contents Preventing low water pressure ......19 Flushing the heating installation for the first time ("cold") ............19 Safety ..............4 Filling the heating installation ......19 Action-related warnings ......... 4 Purging the heating installation ......20 Intended use ............4 Filling and purging the hot water system .....
  • Page 3 Contents Commissioning Checklist......... 41 Opening of the flue pipe........45 Positioning of the opening of a fan-supported flue gas pipe ............45 Horizontal terminal positioning......46 Opening of the flue pipe below eaves and balconies ............46 Technical data............ 47 Index ...................

  • Page 4: Safety

    1 Safety Safety this document shall be considered improper use. Any direct commercial or industrial use Action-related warnings is also deemed to be improper. Classification of action-related warnings Caution. The action-related warnings are classified in Improper use of any kind is prohibited. accordance with the severity of the possible danger using the following warning signs and General safety information...
  • Page 5 Safety 1 ▶ Ensure that the product is supplied with phone once you are outside of the build- ing. sufficient combustion air. 1.3.3 Risk of death from leaks if the 1.3.8 Risk of poisoning caused by product is installed below ground insufficient combustion air supply level Conditions: Open-flued operation...

  • Page 6: Related Documents

    1 Safety 1.3.13 Risk of material damage caused by themselves and others with regard to manual using an unsuitable tool handling and working at height requirements. During the appliance installation (and any ▶ Use the correct tool to tighten or loosen subsequent work, such as, the replacement threaded connections.

  • Page 7: Related Documents

    Safety 1 – BS 8558 Guide to the design, installation, – BS 6644 Installation of gas boilers testing and maintenance of services sup- between 60 kW and 2 MW (2nd and 3rd plying water for domestic use within build- family gases) –...

  • Page 8: Notes On The Documentation

    47-044-90 ecoTEC pro 28 Benchmark Vaillant is a licensed member of the Benchmark Scheme. Benchmark places responsibilities on both manufacturers and installers. The purpose is to ensure that customers are provided with the correct equipment for their needs, that it is installed, commissioned and serviced in accordance with the manufacturer’s instructions by a competent person approved...

  • Page 9: Serial Number

    Max. electrical power consumption IP rating Hot Water Association Heating mode Vaillant is a full member of the Hot Water Association and Domestic hot water generation promotes the scheme in association with its cylinder range. Details are available on the web site www.vaillant.co.uk...

  • Page 10: Transporting The Product

    4 Set-up Transporting the product Dimensions 4.3.1 General ▶ Hold the load as close as possible to your body. Do not twist your body – instead, reposition your feet. ▶ If the unit is being lifted by two persons, ensure your movements are coordinated during lifting.

  • Page 11: Minimum Clearances

    Set-up 4 Consult the installation template that is supplied to find the Conditions: The load-bearing capacity of the wall is sufficient, The fixing dimension A. material may be used for the wall ▶ Wall-mount the product as described. Minimum clearances ▶...

  • Page 12: Removing The Side Section

    5 Installation ▶ Removing the side section If, during gas leak-tightness tests, you also place the gas lines and the gas valve in the product under pressure, use a max. test pressure of 11 kPa (110 mbar). ▶ If you cannot limit the test pressure to 11 kPa (110 mbar), close any gas isolator cocks that are installed upstream from the product before you carry out the gas leak-...

  • Page 13: Installing The Gas Connection

    Installation 5 5.1.3 Using the correct type of gas Remove the residues from the gas line by blowing through the gas line beforehand. Using the incorrect type of gas may cause fault shutdowns in Purge the gas line before start-up. the product.

  • Page 14: Connecting The Condensate Drain Pipework

    5 Installation ▶ Connecting the condensate drain pipework Leave an installation space of at least 180 mm beneath the condensate trap. Danger! Installing the discharge pipe on the Risk of death from escaping flue gases! expansion relief valve The condensate drain pipework for the si- phon must not be connected tightly to waste- Install the discharge pipe for the expansion relief valve so that it does not interfere with the removal and fitting...

  • Page 15: Electrical Installation

    Installation 5 5.8.2 Replacing the connection piece for the air/flue pipe as required Replace the connection piece for the air/flue pipe as required. The product-specific standard equipment is listed under Technical data. 65 mm Remove the connection piece for the air/flue pipe – this is installed at the factory.
  • Page 16 5 Installation ▶ Only connect the mains connection cable 5.9.4 Installing the product in a moist to the terminals marked for the purpose. environment Danger! Route the connection cables of the components to be Risk of death from electric shock! connected through the cable duct provided on the un- If you install the product in a room with high derside of the product on the left.

  • Page 17: Operation

    Operation 6 Installer level overview Conditions: Connecting a limit thermostat for underfloor heating ▶ Remove the bridge and connect the limit thermostat to S.31 the Burner off connection. Close the electronics box. For multi-circuit controllers, change D.018 from Eco (in- termittently operating pump) to Comfort (continuously operating pump).

  • Page 18: Setting The Hot Water Temperature

    7 Start-up ▶ Setting the hot water temperature Use a magnetic rod to check whether it contains mag- netite (iron oxide). ▶ Danger! If you ascertain that it contains magnetite, clean the in- Risk of death from legionella. stallation and apply suitable corrosion-protection meas- ures, or fit a magnetic filter.

  • Page 19: Preventing Low Water Pressure

    Start-up 7 Additives for cleaning measures (subsequent Close the drain cocks. flushing required) Refill the heating system with water. – Adey MC3+ Check that the expansion relief valve of the heating – system is functioning correctly by turning the handle Adey MC5 on the valve.

  • Page 20: Purging The Heating Installation

    ("Exp") (P Installation 0.02 MPa (0.2 bar)). Only Vaillant Service Solutions may perform a gas conver- sion. If there is still too much air in the heating installation at the end of the check programme P.00, repeat the check If a gas conversion to liquid gas has been carried out, the programme.
  • Page 21 Start-up 7 Open the gas isolator cock. H gas in m³/h P gas in kg/h Start up the product with the check programme P.01. nom. In addition, ensure that maximum heat can be dissip- Heatout- Nom. +5% -10% Nom. +5% -10% ated into the heating system by turning up the room thermostat.

  • Page 22: Checking Leak-Tightness

    7 Start-up ▶ 7.11.5 Checking the CO₂ content and, if For liquid gas only: Only perform the adjustment in ex- tremely small increments (approx. 1/16 turn), and wait necessary, adjusting it (air index setting) approx. one minute after each adjustment until the value Start up the product with the check programme P.01.

  • Page 23: Adapting The Unit To The Heating Installation

    Adapting the unit to the heating installation 8 Note Set maximum burner anti-cycling time Flow [min] (target) The actual reading on the digital pressure [°C] gauge should ideally be 0,05 MPa (0,5 bar) plus an additional pressure corresponding 29.0 33.0 37.0 41.0 45.0...

  • Page 24: Setting The Pump Output

    8 Adapting the unit to the heating installation Setting the pump output Navigate to diagnostics code D.014 in the installer level and confirm by pressing Set the required pump output. Conditions: Low loss header installed ▶ Switch off the speed regulation and set the pump output to a fixed value.

  • Page 25: Troubleshooting 9

    Troubleshooting 9 Troubleshooting Preparing the repair work Decommission the product. Checking service messages Disconnect the product from the power mains. appears if you have set a maintenance interval, for ex- Remove the front casing. (→ Page 11) ample, and this has passed or a service message is issued. Close the gas isolator cock.
  • Page 26 9 Troubleshooting 9.6.2 Replacing the fan or gas valve 15. Tighten the cap nut (2) on the gas valve and the cap nut (8) between the gas pipes. In the process, secure the gas pipe against twisting. Use new seals. 16.

  • Page 27: Completing Repair Work

    Inspection and maintenance 10 ◁ You are automatically taken to D.093 to set the Note device specific number. Instead of grease, use only water or com- mercially available soft soap to aid installa- Set the correct value for the relevant product type in ac- tion.

  • Page 28: Removing The Compact Thermal Module

    10 Inspection and maintenance 10.1 Removing the compact thermal module Note The compact thermal module consists of four main components: – Speed-regulated fan, – Gas/air connection, – Gas supply (mixture pipe) with burner flange, – Premix burner. Danger! Risk of death and risk of material damage caused by hot flue gas.

  • Page 29: Checking The Burner

    Inspection and maintenance 10 ◁ The water flows out of the heat exchanger through the condensate siphon. 10.3 Checking the burner Tilt the electronics box forward. Remove the clamp (2). Remove the pipe (1) from the product. Rinse the filter under a jet of water, holding it against the direction of flow.

  • Page 30: Draining The Product

    Maintenance Agreement. (→ Page 27) Please contact Vaillant Service Solutions for further details: Fill the heating installation. (→ Page 19) Telephone: 0330 100 3461 Purge the heating installation. (→ Page 20) 10.9...

  • Page 31: Appendix

    Appendix Appendix Overview of diagnostics codes Note Since the code table is used for various products, some codes may not be visible for the product in question. Default Own setting Code Parameter Values or explanations setting D.000 Heating partial load Adjustable heating partial load in kW Auto Auto: Product automatically adjusts max.
  • Page 32 Appendix Default Own setting Code Parameter Values or explanations setting D.018 Pump operating mode 1 = Comfort (continuously operating pump) 3 = Eco Internal pump is switched on when the heating flow tem- perature is not at Heating off and the heat requirement is enabled via an external controller 3 = Eco (intermittently operating pump) Internal pump is switched on every 25 minutes for 5...
  • Page 33 0 = Relay with disable facility 0 = Relay with disable 1 = PWM with disable facility facility D.047 Current outside temperature (with Vaillant weather compensator) Not ad- justable Actual value in °C D.050 Offset min. speed In rpm, setting range: 0 to 3000...
  • Page 34 Not ad- justable 7 = 24 (VUW GB 246/5-3 A); VUW 246/5-3 (H-GB) ecoTEC pro 24 22 = 28 (VUW GB 286/5-3A); VUW 286/5-3 (H-GB) ecoTEC pro 28; VUW 286/5-3 (P-GB) ecoTEC pro 28 26 = 30 (VUW GB 306/5-3) D.077 DHW partial load...

  • Page 35: B Status Codes - Overview

    Appendix Status codes – Overview Note Since the code table is used for various products, some codes may not be visible for the product in question. Statuscode Meaning S.00 Heating: No heat de- Heating has no heat demand. The burner is off. mand S.01 Heating mode: Fan start- The fan start-up for heating mode is activated.

  • Page 36: C Overview Of Fault Codes

    The self-test for the flow/return temperature sensor is activated. sensor self-test S.99 Vaillant self-test The Vaillant self-test is activated. Overview of fault codes Note Since the code table is used for various products, some codes may not be visible for the product in question.
  • Page 37 Appendix Message Possible cause Measure ▶ F.24 Safety switch-off: Temp. Temperature increase too fast Check: Plug, cable to the heating pump, air/insufficient water incr. too fast in the heating circuit, internal air vent (function), heating pump (system pressure too low, temperature gradient too great on heating flow, non-return valve).

  • Page 38: D Check Programmes - Overview

    Appendix Message Possible cause Measure ▶ F.77 Fault: Flue non-ret. No flue non-return flap feed- Check: Cable to VR40 accessory, flue non-return flap (wiring, valve/condens. pump back; condensate pump over- feedback switch), condensate pump, bridge from the surface- flow mounted thermostat, 2 in 7 multi-functional module (bridge). F.78 Interrupt.: DHW outlet UK link box is connected Check: Accessory (configuration/electrical connection).

  • Page 39: E Wiring Diagrams

    Appendix Wiring diagrams Product connection diagram with integrated hot water generation +24V Hallsignal Masse X106 X40 X51 X106 230V~ Main PCB 24 V DC room thermostat Operator control panel PCB Bus connection (digital room thermostat/controller) Outside temperature sensor, flow temperature Diverter valve sensor (optional, external), DCF receiver Water pressure sensor...

  • Page 40: F Inspection And Maintenance Work

    Appendix Inspection and maintenance work The table below lists the manufacturer requirements with respect to minimum inspection and maintenance intervals. If na- tional regulations and directives require shorter inspection and maintenance intervals, you should observe these instead of the intervals listed. Each time inspection and maintenance work is carried out, carry out the required preparatory and com- pletion work.

  • Page 41: G Commissioning Checklist

    Appendix Commissioning Checklist Benchmark Commissioning and Servicing Section It is a requirement that the boiler is installed and commissioned to the completed in full. www.centralheating.co.uk © Heating and Hotwater Industry Council (HHIC) 0020244995_02 ecoTEC pro Installation and maintenance instructions...
  • Page 42 Appendix GAS BOILER SYSTEM COMMISSIONING CHECKLIST This Commissioning Checklist is to be completed in full by the competent person who commissioned the boiler as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference. CONTROLS Optimum start control Fitted...
  • Page 43 Appendix SERVICE RECORD It is recommended that your heating system is serviced regularly and that the appropriate Service Interval Record is completed. Service Provider SERVICE 01 SERVICE 02 ² % ² % ² % ² % SERVICE 03 SERVICE 04 ²...
  • Page 44 Appendix PRIOR TO CO AND COMBUSTION RATIO CHECK NOTE The boiler manufacturer’s installation instructions should have been followed, gas type verified and gas THE AIR GAS RATIO VALVE IS FACTORY supply pressure/rate checked as required prior to commissioning. SET AND MUST NOT BE ADJUSTED As part of the installation process, especially where a flue has been fitted by persons other than the DURING COMMISSIONING UNLESS THIS boiler installer, visually check the integrity of the whole flue system to confirm that all components are...

  • Page 45: H Opening Of The Flue Pipe

    Appendix Opening of the flue pipe D, E Positioning of the opening of a fan-supported flue gas pipe Minimum dimen- Installation site sions Directly below an opening, air bricks, opening windows, etc., that can be opened. 300 mm Above an opening, air bricks, opening windows, etc., that can be opened. 300 mm Horizontally to an opening, air bricks, opening windows, etc., that can be opened.

  • Page 46: I Horizontal Terminal Positioning

    Appendix Horizontal terminal positioning BS 5440-1 recommends that fanned flue chimney terminals should be positioned as follows: a) at least 2 m from an opening in the building directly opposite, and b) so that the products of combustion are not directed to discharge directly across a boundary if the products are likely to cause a nuisance to a neighbour or discharge over a walkway or patio.

  • Page 47: K Technical Data

    Appendix Technical data Technical data – General VUW 246/5- VUW 286/5- VUW 286/5- 3 (H-GB) 3 (H-GB) 3 (P-GB) ecoTEC pro ecoTEC pro ecoTEC pro Designated country (des- GB (Great GB (Great GB (Great ignation in accordance Britain), IE Britain), IE Britain), IE with ISO 3166) (Ireland)
  • Page 48 Appendix Technical data – G20 power/loading G20 VUW 246/5- VUW 286/5- 3 (H-GB) 3 (H-GB) ecoTEC pro ecoTEC pro Nominal heat output range P at 50/30 °C … 24.8 kW … 25.9 kW Nominal heat output range P at 80/60 °C …...
  • Page 49 Appendix Technical data – Heating VUW 246/5- VUW 286/5- VUW 286/5- 3 (H-GB) 3 (H-GB) 3 (P-GB) ecoTEC pro ecoTEC pro ecoTEC pro 85 ℃ 85 ℃ 85 ℃ Maximum flow temperat- 30 … 80 ℃ 30 … 80 ℃ 30 …...

  • Page 50: Index

    Index Index Documents ................8 Draining, product ..............30 60/100 mm diameter unit connection piece with offset, Electricity ................5 installing ................15 Electronics box, closing............15 Electronics box, opening ............. 15 80/125 mm diameter unit connection piece, installing ..15 Fan, replacing..............
  • Page 51 Index Pre-charge pressure for the internal expansion vessel, checking ................30 Preparing, repair work ............25 Pressure gauge ..............8 Product dimensions............. 10 Product, draining ..............30 Product, switching off ............ 18, 30 Product, switching on ............18 Pump output, setting ............24 Pump, remaining feed head ..........
  • Page 52 0020244995_02 0020244995_02 28.03.2018 Supplier Vaillant Ltd. Nottingham Road Belper Derbyshire DE56 1JT Telephone 0330 100 3461 [email protected] www.vaillant.co.uk © These instructions, or parts thereof, are protected by copyright and may be reproduced or distributed only with the manufacturer's written consent. We reserve the right to make technical changes.

This manual is also suitable for:

Vuw 286/5-3 (h-gb)Vuw 246/5-3 (h-gb)Vuw 286/5-3 (p-gb)Ecotec pro 28

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