Vaillant ecoFIT pure 825 Installation And Maintenance Instructions Manual
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Vaillant ecoFIT pure 825 Installation And Maintenance Instructions Manual

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For the competent person
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
info@vaillant.de
www.vaillant.de
Installation and maintenance instructions
ecoFIT pure
825 - 835
GB, IE

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Summary of Contents for Vaillant ecoFIT pure 825

  • Page 1 Installation and maintenance instructions For the competent person Installation and maintenance instructions ecoFIT pure 825 - 835 GB, IE Publisher/manufacturer Vaillant GmbH Berghauser Str. 40 D-42859 Remscheid Tel. +49 21 91 18‑0 Fax +49 21 91 18‑2810 info@vaillant.de www.vaillant.de...

  • Page 2: Table Of Contents

    Contents Contents 7.10 Checking the gas flow rate ........17 7.11 Checking and adjusting the gas settings ..... 18 Safety ..............4 7.12 Checking leak-tightness ........19 Action-related warnings ......... 4 Adapting the unit to the heating installation............20 Risk caused by inadequate qualifications....4 Burner anti-cycling time ........
  • Page 3 Contents Index ................... 47 0020230531_01 ecoFIT pure Installation and maintenance instructions...

  • Page 4: Safety

    1 Safety Safety Intended use There is a risk of injury or death to the user or Action-related warnings others, or of damage to the product and other Classification of action-related warnings property in the event of improper use or use The action-related warnings are classified in for which it is not intended.
  • Page 5 Safety 1 ▶ If possible, close the gas isolator cock on ▶ Secure against being switched back on the product. again. ▶ Warn other occupants in the building by ▶ Wait for at least 3 minutes until the con- yelling or banging on doors or walls. densers have discharged.

  • Page 6: Regulations (Directives, Laws, Standards)

    1 Safety locations, choose a separate installation room in which the room air is technically free of chemical substances. 1.4.11 Risk of material damage caused by leak detection sprays and liquids Leak detection sprays and liquids block the filter of the mass flow sensor on the Venturi, and thus destroy the mass flow sensor.

  • Page 7: Notes On The Documentation

    = year of production For quality control purposes; 5th and 6th Benchmark digits = week of production Vaillant is a licensed member of the Benchmark Scheme. For identification purposes; 7th to 16th digits = product article number Benchmark places responsibilities on both manufacturers For quality control purposes;...

  • Page 8: Functional Elements: Combination Unit

    4 Assembly CE label Information on the Meaning identification plate Read the instructions.   GC no. Gas council number The CE label shows that the products comply with the basic requirements of the applicable directives as stated on the Functional elements: Combination unit identification plate.

  • Page 9: Dimensions

    Assembly 4 Heating return Connection on the top Quantity Description of the air/flue pipe Connection on the back Connection pipe (heating flow and return) of the air/flue pipe Cold water connection pipe Hot water connection pipe Minimum clearances Gas pipe Expansion relief valve discharge pipe Installation template Enclosed documentation...

  • Page 10: Removing/Installing The Front Casing

    4 Assembly Removing/installing the front casing 4.9.1 Removing the front casing Check whether the wall has sufficient load-bearing ca- pacity to bear the operational weight of the product. Check if the supplied fixing material may be used for the wall. Conditions: The load-bearing capacity of the wall is sufficient, The fixing material may be used for the wall ▶...

  • Page 11: Installation

    Installation 5 Checking the gas meter ▶ Make sure that the existing gas meter is capable of passing the rate of gas supply required. Gas and water connections Caution. Risk of damage caused by incorrect gas connection installation. Excess test pressure or operating pressure may cause damage to the gas valve.

  • Page 12: Connecting The Drain Line For The Expansion Relief Valve

    5 Installation Connecting the condensate drain pipework ▶ Follow the instructions listed here and observe directives and local regulations on condensed water discharge. ▶ Use PVC or another material that is suitable for draining the non-neutralised condensed water. ▶ If you cannot guarantee that the materials from which the drain lines are made are suitable, install a system for neutralising the condensate.
  • Page 13 Installation 5 5.5.1 Opening the electronics box 5.5.5 Establishing the power supply ▶ Follow the instructions in the specified sequence. Observe all valid regulations. Ensure that the rated mains voltage is 230 V. 5.5.2 Closing the electronics box Set up a fixed connection and install a partition with a ▶...

  • Page 14: Operation

    6 Operation 5.5.6 Connecting controllers to the electronic mostat, install an additional frost protection thermo- stat. system ◁ The pump programmes are not active. ◁ If the product is switched off, the display is switched off. ◁ Each time the unit is started, the fan runs for 20 seconds.

  • Page 15: Calling Up The Installer Level

    Start-up 7 Start-up Calling up the installer level Only call up the installer level if you are a competent Carrying out the initial start-up person. Press ("i") at the same time. Initial start-up must be carried out by a customer service technician or an authorised competent person using the first- ◁...

  • Page 16: Avoiding Danger Arising From Insufficient Water Pressure

    7 Start-up ▶ ▶ Do not use any unsuitable frost and cor- If the value is below 6.5 or above 8.5, clean the system and treat the heating water. rosion protection agents, biocides or seal- ▶ Ensure that oxygen cannot get into the heating water. ants.

  • Page 17: Switching On The Product

    Start-up 7 Switching on the product Filling the condensate siphon ▶ Switch on the product via the main switch installed on- site. Filling and purging the heating installation Preliminary work ▶ Flush the heating installation through. Unclip the lower section of the siphon (1) from the up- per section of the siphon (2).

  • Page 18: Checking And Adjusting The Gas Settings

    7 Start-up Permissible connection pressure H gas in m³/h Qnw from the data plate Great Bri- Natural −10% 1.7 … 2 kPa Nom. tain (17.0 15.3 1.62 1.70 1.46 … 20 mbar) 18.4 1.95 2.05 1.76 Should the pressure recorded at the reference test point 24.7 2.61 2.74...

  • Page 19: Checking Leak-Tightness

    Start-up 7 7.11.2 Checking the leak-tightness of the flue gas installation and flue gas recirculation Check the flue gas installation is intact in accordance with the latest gas safe technical bulletin and informa- tion supplied in the installation instructions. For extended flue gas installations check for flue gas recirculation using the air analysis point.

  • Page 20: Adapting The Unit To The Heating Installation

    8 Adapting the unit to the heating installation Status codes – Overview (→ Page 32) 8.1.2 Resetting the remaining burner anti-cycling time ◁ If the product is working correctly, the display shows ▶ S.14. Press Setting the pump output Adapting the unit to the heating The product is equipped with a speed-regulated high-effi- installation ciency pump, which adjusts independently to the hydraulic...

  • Page 21: Setting The Bypass Valve

    Handing the product over to the operator 9 Setting the hot water temperature Danger! Risk of death from Legionella. Legionella multiply at temperatures below 60 °C. ▶ Ensure that the operator is familiar with all of the Anti-legionella measures in order to comply with the applicable regulations regarding legionella prevention.

  • Page 22: Calling Up And Clearing The Fault Memory

    10 Troubleshooting 10.2 Calling up and clearing the fault memory The last 10 fault messages are stored in the fault memory. ▶ Call up the installer level. (→ Page 15) ▶ Navigate to the fault codes. ◁ The number of faults that have occurred is shown in the display and the faults that are currently called up are displayed with their fault numbers F.xx.
  • Page 23 Troubleshooting 10 10.5.5 Replacing the expansion vessel Drain the product. (→ Page 28) 11. Remove the clip underneath the condensate tray (1). 12. Undo the four screws (2). Undo the nut (3). Remove both screws on the support plate (1). Remove the support plate.

  • Page 24: Checking The Product For Leak-Tightness

    11 Inspection and maintenance 10.5.7 Replacing the PCB for the user interface 10.5.9 Replacing the flow sensor Push the volume flow sensor's handle towards the rear of the boiler. Pull the volume flow sensor (1) out of its holder. Remove the plug from the volume flow sensor. Connect the plug to the new volume flow sensor.

  • Page 25: Observing Inspection And Maintenance Intervals

    Inspection and maintenance 11 11.2 Observing inspection and maintenance 11.5 Setting the CO₂ content intervals Conditions: The CO₂ content must be adjusted ▶ Adhere to the minimum inspection and maintenance in- tervals. The inspection may require maintenance to be carried out earlier, depending on the results. Inspection and maintenance work –...

  • Page 26: Removing The Gas-Air Mixture Unit

    11 Inspection and maintenance 11.6 Removing the gas-air mixture unit Note The gas-air mixture unit consists of three main components: – Ventilator – Gas valve, – Burner cover Switch off the product via the main switch. Close the gas isolator cock. Remove the front casing.

  • Page 27: Checking The Burner

    Inspection and maintenance 11 11.8 Checking the burner Note Check whether the float is present in the Search the surface of the burner for possible damage. If condensate siphon. you see any damage, replace the burner. Install the two new burner seals. Clip the lower section of the siphon (1) into the upper 11.9 Checking the ignition electrode...

  • Page 28: 11.13 Installing The Gas-Air Mixture Unit

    Drain the product. (→ Page 28) 13 Customer service To ensure regular servicing, it is strongly recommended that arrangements are made for a Maintenance Agreement. Please contact Vaillant Service Solutions for further details: Telephone: 0330 100 3461 Installation and maintenance instructions ecoFIT pure 0020230531_01...

  • Page 29: 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. Dia- Values Default set- gnostics Parameter Unit Increment, select, explanation Own setting ting Min.
  • Page 30 Appendix Dia- Values Default set- gnostics Parameter Unit Increment, select, explanation Own setting ting Min. Max. code – d.18 Pump overrun operating 1 = Continuous (pump runs per- Adjustable mode manently) 3 = Eco (intermittent pump mode – for the dissipation of the resid- ual heat after hot water gener- ation at an extremely low heat demand)
  • Page 31 Appendix Dia- Values Default set- gnostics Parameter Unit Increment, select, explanation Own setting ting Min. Max. code – – d.35 Position of the diverter Current value 0 = Heating valve adjustable 40 = Mid-position (parallel opera- tion) 100 = Domestic hot water –...

  • Page 32: B Status Codes - Overview

    Appendix Dia- Values Default set- gnostics Parameter Unit Increment, select, explanation Own setting ting Min. Max. code – d.80 Running time in heating Current value Running time = Display value x mode adjustable – d.81 Running time in hot wa- Current value Running time = Display value x ter handling mode...

  • Page 33: C Overview Of Fault Codes

    Appendix Status code Meaning S.16 DHW mode: Fan overrun S.17 DHW mode: Pump overrun Display in Comfort mode with warm start or hot water handling mode with cylinder S.20 Hot water handling mode: Requirement S.21 Hot water handling mode: Advance fan operation S.22 Hot water handling mode: Pump pre-run S.23...
  • Page 34 Appendix Fault code Meaning Possible cause F.20 Safety switch-off: Overheating temperat- Incorrect earth connection between cable harness and product, flow or return ure reached NTC defective (loose connection), black discharge via ignition cable, ignition plug or ignition electrode F.22 Safety switch-off: Low water pressure in No or insufficient water in the product, water pressure sensor de- the boiler fective, cable to the pump or to the water pressure sensor loose/not...
  • Page 35 Appendix Fault code Meaning Possible cause F.84 Fault: Flow/return temperature sensor Values not consistent, difference < -6 K Flow and return temperature sensors signalling implausible values: Flow and return temperature sensors have been inverted, flow and return temperature sensors have not been correctly installed F.85 Fault: Temperature sensor The flow and/or return temperature sensors have been installed on the same...

  • Page 36: D Connection Diagram: Combination Unit

    Appendix Connection diagram: Combination unit Burner off RT 24V X106 eBUS – Burner 24V= 230V~ RT 230Vac 230Vac Main PCB 3-way valve Interface PCB Pressure sensor Timer Flow rate sensor Temperature sensor in the heating flow External ignition device Temperature sensor in the heating return Heating pump Ionisation and ignition electrode Gas valve...

  • Page 37: E Connection Diagram: Combination Unit (35 Kw)

    Appendix Connection diagram: Combination unit (35 kW) Burner off RT 24V X106 eBUS – Burner 24V= 230V~ RT 230Vac 230Vac Main PCB 3-way valve Interface PCB Pressure sensor Timer Flow rate sensor Temperature sensor in the heating flow External ignition device Temperature sensor in the heating return Heating pump Ionisation and ignition electrode...

  • Page 38: F Inspection And Maintenance Work - Overview

    Appendix Inspection and maintenance work – Overview 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 in the table.

  • Page 39: G Opening In The Flue Pipe

    Appendix Opening in 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 40: 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 41: H 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) 0020230531_01 ecoFIT pure 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: I Technical Data

    Appendix Technical data Technical data – Heating VUW 256/6-3 (H- VUW 306/6-3 (H- VUW 356/6-3 (H- 10 … 80 ℃ 10 … 80 ℃ 10 … 80 ℃ Max. flow temperature adjustment range (default setting: 75 °C) Maximum permissible pressure 0.3 MPa 0.3 MPa 0.3 MPa...
  • Page 46 Appendix VUW 256/6-3 (H- VUW 306/6-3 (H- VUW 356/6-3 (H- Diameter of the heating connec- 3/4 inch 3/4 inch 3/4 inch tions Expansion relief valve connector 15 mm 15 mm 15 mm (min.) Condensate drain pipework (min.) 21.5 mm 21.5 mm 21.5 mm G20 gas supply pressure 2.0 kPa...
  • Page 47 Index Index Installer level, calling up ............15 Intended use................4 Air/flue pipe, installed ............5 Leak detection spray ............. 6 Burner anti-cycling time............20 Mains connection ..............13 Maintenance work ............25, 38 Burner anti-cycling time, resetting ........20 Burner anti-cycling time, setting ..........
  • Page 48 0020230531_01 0020230531_01 25.10.2016 supplier Vaillant Ltd. Nottingham Road Belper Derbyshire DE56 1JT Telephone 0330 100 3461 info@vaillant.co.uk 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.

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