Potterton 24 Eco HE Installation & Service Instructions Manual
Potterton 24 Eco HE Installation & Service Instructions Manual

Potterton 24 Eco HE Installation & Service Instructions Manual

Wall mounted powered flue condensing combination boiler gas fired central heating unit

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Installation & Service Instructions
This is a Wall Mounted Powered Flue Condensing Combination Boiler Gas Fired Central Heating Unit.
The boiler meets the requirements of Statutory Instrument " The Boiler (Efficiency) Regulations 1993 N
deemed to meet the requirements of Directive 92/42/EEC on the energy efficiency requirements for new hot water
boilers fired with liquid or gaseous fuels:-
Type test for purpose of Regulation 5 certified by:
Notified Body 0051.
Product/Production certified by:
Notified Body 0086.
For use in GB/IE only.
These instructions include the Benchmark Commissioning Checklist and should be left with the User for safe keeping.
2
Reset
Burner On
Flame Failure
Power On
bar
Performa
24 Eco HE
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3083" and is

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Summary of Contents for Potterton 24 Eco HE

  • Page 1 Installation & Service Instructions This is a Wall Mounted Powered Flue Condensing Combination Boiler Gas Fired Central Heating Unit. The boiler meets the requirements of Statutory Instrument “ The Boiler (Efficiency) Regulations 1993 N deemed to meet the requirements of Directive 92/42/EEC on the energy efficiency requirements for new hot water...
  • Page 2: Table Of Contents

    Natural Gas Potterton Performa 24 Eco HE G.C.N 47 393 11 CONTENTS Section Legislation Introduction General Layout Appliance Operation Technical Data Dimensions and Fixings System Details Site Requirements Installation Commissioning 10.0 Completion 11.0 Servicing the Boiler 12.0 Changing Components 13.0 Electrical 14.0 Short Parts List...
  • Page 3 INSTALLER NOTIFICATION GUIDELINES Competent Person's Self Certification Scheme Install and Commission this appliance to manufacturer's instructions Complete the Benchmark Checklist If you notify via CORGI Scheme, CORGI will then notify the relevant Local Authority Building Control Scheme on member's behalf Scheme Members only Call CORGI on: 0870 88 88 777 or log onto:...
  • Page 4: Legislation

    IMPORTANT - Installation, Commissioning, Service & Repair This appliance must be installed in accordance with the manufacturer’s instructions and the regulations in force. Read the instructions fully before installing or using the appliance. In GB, this must be carried out by a competent person as stated in the Gas Safety (Installation &...
  • Page 5: Introduction

    INTRODUCTION Description 1. The Potterton Performa 24 Eco HE is a fully automatic gas fired wall mounted condensing combination boiler. It is room sealed and fan assisted, and will provide central heating and mains fed domestic hot water. 2. The boiler is set to give a maximum output of 25.2 kW (condensing).
  • Page 6: General Layout

    Reset Performa 24 Eco HE Fig. 2 Burner On Flame Failure Power On GENERAL LAYOUT Layout Air Pressure Switch Expansion Vessel Burner Manifold Automatic Air Vent DHW Plate Heat Exchanger Circulation Pump Drain Off Point Pressure Relief Valve Optional Integral Timer Position...
  • Page 7: Appliance Operation

    IMPORTANT: When the selector switch is in the ‘0’ (Off) position the electrical supply to the boiler is isolated. The boiler will not operate and the integral timer (if fitted) will require resetting once the selector switch is turned to either the DHW or CH position.
  • Page 8: Technical Data

    External Fuse Rating Internal Fuse Rating Fuse 2A Fast Blow to BS 4265 SEDBUK Declaration For Performa 24 Eco HE The seasonal efficiency (SEDBUK) is 87.3% (89.3% LPG) Band B This value is used in the UK Government’s Standard Assessment Procedure (SAP) for energy rating of dwellings.
  • Page 9: Dimensions And Fixings

    DIMENSIONS AND FIXINGS 360° Orientation Fig. 6 Heating Flow 95mm 65mm Left Hand Side of Boiler Publication No. 5111811 Tube Ø 100mm Gas Inlet Domestic Hot Cold Water Water Outlet 65mm 65mm View from under the appliance Dimensions A 780mm...
  • Page 10: System Details

    SYSTEM DETAILS Information 1. The Potterton Performa 24 Eco HE Condensing Combination Boiler is a ‘Water Byelaws Scheme - Approved Product’. To comply with the Water Byelaws your attention is drawn to the following installation requirements and notes (IRN). a) IRN 001 - See text of entry for installation requirements and notes.
  • Page 11 SYSTEM DETAILS System Filling and Pressurising 1. A filling point connection on the central heating return pipework must be provided to facilitate initial filling and pressurising and also any subsequent water loss replacement/refilling. 2. There are connection points on the mains cold water inlet and central heating return isolating taps to which the optional filling loop kit (Part No.
  • Page 12 1. If the area of the installation is recognised as a HARD WATER AREA then a suitable device should be fitted to treat the mains water supply to the boiler. Contact your Water Distribution Company for advice on suitable devices.
  • Page 13: Site Requirements

    2. If the boiler is sited in an unheated enclosure then it is recommended that frost protection is incorporated in the control system. 3. If the boiler is fitted in a room containing a bath or shower reference must be made to the relevant requirements.
  • Page 14 Connection may be via a fused double-pole isolator with a contact separation of at least 3mm in all poles and servicing the boiler and system controls only. Publication No. 5111811...
  • Page 15 It is also recommended that the pipe diameter is increased to 32mm. 8. If the boiler is fitted in an unheated location the entire condensate discharge pipe should be treated as an external run.
  • Page 16 See BS 5440 Pt. 1. SITE REQUIREMENTS Flue NOTE: Due to the nature of the boiler a plume of water vapour will be discharged from the flue. This should be taken into account when siting the flue terminal.
  • Page 17 SITE REQUIREMENTS Flue Dimensions The standard horizontal flue kit allows for flue lengths between 100mm and 685mm from elbow to terminal (Fig. 16). The maximum permissible flue length is: 4 metres. Flue Trim 1. The rubber flue trim supplied may be fitted to either the outside wall or on the inner wall of installation.
  • Page 18 (Twin Pipe) Vertical Flues SITE REQUIREMENTS 7.11 Flue Options 1. The Potterton Performa 24 Eco HE can be fitted with flue systems as illustrated. 2. The standard flue is suitable only for horizontal applications. 3. Maximum permissible equivalent flue lengths are:-...
  • Page 19: Installation

    2. Flush thoroughly (see System Details, Section 6.2). Preparing The Boiler 1. Remove all packaging. 2. Stand the boiler on its base by using the rear lower edge as a pivot. NOTE: A small amount of water may drain from the boiler in the upright position.
  • Page 20 INSTALLATION Fitting The Boiler 1. Lift the boiler using the lower edges. Engage the slots at the top rear of the boiler on the wall plate hooks (Fig. 20). 2. Ensure that the boiler is level and sits against the wall.
  • Page 21 (Fig. 23). 2. Locate the flue elbow on the adaptor at the top of the boiler. Set the elbow to the required orientation (Fig. 24). NOTE: The flue elbow is angled at 93 degrees to ensure a fall back to the boiler.
  • Page 22 11. Fit the flue trim if required, and if necessary fit a terminal guard (see Section 7.9 & 7.10). VERTICAL FLUE 1. Only a flue approved with the Potterton Performa 24 Eco HE can be used. 2. For information on vertical flues consult the Potterton Flue Guide brochure. Flue Elbow Flue Trim Fig.
  • Page 23 Remove the cover (Fig. 30). 4. Slacken the cable clamp on the LH side of the boiler chassis (Fig. 31). Insert the cable through the clamp and route it to the terminal block. 5. Slacken the screws in the terminal block, connect the input cable, and tighten the screws.
  • Page 24: Commissioning

    Pressure Gauge Selector Switch Fig. 34 Reset Burner On Flame Failure Power On Performa 24 Eco HE Central Heating Temperature Control Screw Fig. 35 Automatic Air Vent Fig. 36 Hot Water Temperature Control COMMISSIONING Commissioning the Boiler 1. Reference should be made to BS 5449 Section 5 when commissioning the boiler.
  • Page 25 COMMISSIONING Checking the Burner Pressure 1. Turn on the gas and electrical supplies to the boiler and ensure that all external controls are calling for heat. 2. Set the hot water and central heating temperature controls to maximum and the selector switch to the OFF position (Fig.
  • Page 26: Completion

    1. Hinge the facia panel upwards and engage the securing screws. Refit the case front panel and tighten the screws (Fig. 40). 2. Instruct the user in the operation of the boiler and system, explaining the operational sequence. 3. Carefully read and complete all sections of the...
  • Page 27: Servicing The Boiler

    11 .1 Annual Servicing 1. For reasons of safety and economy, it is recommended that the boiler is serviced annually. Servicing must be performed by a competent person. 2. After servicing, complete the relevant Service Interval Record section of the Benchmark Commissioning Checklist at the rear of this publication.
  • Page 28 24. Turn the selector switch fully anticlockwise against the spring pressure to position R and hold for 2 seconds to reset the boiler before recommissioning. 25. Complete the relevant Service Interval Record section of the Benchmark Commissioning Checklist at the rear of this publication and then hand it back to the user.
  • Page 29: Changing Components

    12.0 CHANGING COMPONENTS IMPORTANT: When changing components ensure that both the gas and electrical supplies to the boiler are isolated before any work is started. See Section 11.1 “Annual Servicing” for removal of case panel, door etc. 12.1 Fan (Figs. 50 & 51) 1.
  • Page 30 Pipe Connecting Clips Heat Exchanger Electrodes Fig. 53 Electrode Grommets Electrode Leads Fig. 52 Burner 12.0 CHANGING COMPONENTS 12.3 Heat Exchanger (Fig. 52) 1. Remove the fan as described in section 12.1. 2. Drain the primary circuit. Prise the pipe connecting clips off the joints in the flow and return pipes.
  • Page 31 12.0 CHANGING COMPONENTS 12.5 Injectors (Fig. 54) 1. Remove the burner as described in Section 12.4. 2. Undo the screws securing the injector manifold to the inlet elbow and remove the manifold. 3. Unscrew and replace injectors as required and examine the sealing gasket, replacing as necessary.
  • Page 32 5. Remove the screws securing the inlet pipe flange to the tap rail and those securing the outlet manifold to the burner manifold. 6. Remove the valve from the boiler. 7. Note the orientation of the inlet pipe and outlet manifold. Undo the securing screws and remove the pipe and manifold.
  • Page 33 12.0 CHANGING COMPONENTS 12.11 Pump - Head Only (Figs. 58 & 59) 1. Drain the primary circuit and remove the socket head screws securing the pump head to the body and draw the head away. 2. Undo the screw on the pump wiring cover and remove the cover.
  • Page 34 2. Drain the system and undo all gas, water and condensate drain connections. Remove the flue elbow. 3. Lift the boiler off the wall bracket and lay it on it’s side on a clean flat surface. 4. Undo the nut on the vessel outlet spigot, and...
  • Page 35 12.0 CHANGING COMPONENTS 12.17 Pressure Relief Valve (Fig. 65) 1. Drain the primary circuit. 2. Disconnect the discharge pipe from the valve. Using a suitable hexagon key undo the grub screw sufficiently to release the valve. 3. Note the orientation of the valve, rotate it and withdraw it from the manifold.
  • Page 36 Plate Heat Exchanger Fig. 68 Rubber Seal Sensing Pipes Microswitch Bracket DHW Pressure Differential Valve Fig. 69 Diaphragm Diaphragm Spring Pushrod Manifold Grub Screws Plastic Disc Fig. 70 12.0 CHANGING COMPONENTS 12.20 Plate Heat Exchanger (Fig. 68) 1. Drain the primary circuit. 2.
  • Page 37 12.0 CHANGING COMPONENTS 12.21 Diverter Valve Assembly (Cont) CH Pressure Differential Valve (Fig. 71) 1. Remove the DHW pressure differential valve as described above. 2. From the brass diverter manifold undo the nut on the heating flow pipe. Remove the screw securing the diverter manifold to the appliance lower bracket.
  • Page 38 2. Undo the four screws securing the right hand case panel. Remove the panel. 3. Prise the connecting clips from the heat exchanger return pipe and the boiler return pipe. Outer Drum Remove the pipes. 4. Slacken the screws on the fan spigot outlet pipe clamp.
  • Page 39: Electrical

    13.0 ELECTRICAL 13.1 Illustrated Wiring Diagram Mains Input Link Fuse Optional Timers Gas Valve 3-Way Valve Microswitch Condensate Trap Publication No. 5111811 Pump Control PCB Flame Sensing Electrode - brown - black - blue - red - yellow g/y - green / yellow - white - grey On/Off/Reset...
  • Page 40: Short Parts List

    14.0 SHORT PARTS LIST Short Parts List Key G.C. Description Manufacturers Part No. 5112627 Pressure Switch 5112999 Heat Exchanger 5112431 Burner 5112770 E66 402 Injector - 1.18 NG 248210 E66 408 Electrode Lead 248037 E66 411 Spark or Sensing Electrode 247384 Pump Complete 248042 E66 432 Hydraulic Outlet Assembly...
  • Page 41: Fault Finding

    1. Check that gas, water and electrical supplies are available at the boiler. Electrical supply = 230V ~ 50 Hz. CH water system pressurised to 0.5 bar when the boiler is cold. The preferred minimum gas pressure is 19.5mbar (natural gas), or 36mbar (propane).
  • Page 42 Domestic Hot Water - Follow operational sequence Turn selector to neon illuminated Turn thermostat to DHW flow rate more than max. Open DHW tap fully. DHW flow switch operated Primary water is diverted from CH system to DHW terminals and PCB - M1 heat exchanger and flow connector terminals 13 &...
  • Page 43 15.0 FAULT FINDING Fault Finding Solutions Sections A to E Is there 230V at: Main terminals L and N Main terminal fuse Selector terminals a & b and a & 3. PCB - M1 connector terminals 9 & 10 Is there 230V at: Pump If pump jammed, release PCB - M1 connector terminals 8 &...
  • Page 44 Check and correct if necessary 1. Electrical and pressure tube connections 2. Blockage of pressure tubes 3. Restriction in flue 4. Venturi Gas at burner Ensure gas is on and purged PCB - M4 connector is approx 230V AC, Check the burner setting pressure of the gas valve (see Section 9.2 of Commissioning) Voltage at modulating coil of gas valve is:...
  • Page 45 ON/OFF/RESET selector when turned to ‘Reset’ position Press the reset button on the flue overheat thermostat. If the boiler does not relight or repeatedly cuts out check the operation of the flue system or replace the flue overheat thermostat. If the flue overheat thermostat has not been activated see section ‘D’...
  • Page 46: Benchmark Checklist

    THERMOSTATIC RADIATOR VALVES AUTOMATIC BYPASS TO SYSTEM FOR ALL BOILERS CONFIRM THE FOLLOWING THE SYSTEM HAS BEEN FLUSHED IN ACCORDANCE WITH THE BOILER MANUFACTURER’S INSTRUCTIONS? THE SYSTEM CLEANER USED THE INHIBITOR USED FOR THE CENTRAL HEATING MODE, MEASURE & RECORD...
  • Page 47: Service Interval Record

    Service Interval Record Below. Service Provider. Before completing the appropriate Service Interval Record below, please ensure you have carried out the service as described in the boiler manufacturer’s instructions. Always use the manufacturer’s specified spare part when replacing all controls SERVICE 1...
  • Page 48 B A X I H e a t i n g U K Brownedge Road Bamber Bridge Preston Lancashire PR5 6UP After Sales Service 08706 096 096 Technical Enquiries 08706 049 049 Website www.baxi.co.uk ompany 5111811 - Iss. 4 Publication No. General Enquiries (GB) 08706 060 780 Tel.

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Performa 24 eco he

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