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Baxi 946 Installer's Manual

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5111554/04
INSTALLER GUIDE
Model 946
Heat Engine
(GC No. 32-032-63)
INSET LIVE FUEL EFFECT GAS FIRE
THIS APPLIANCE IS FOR USE WITH NATURAL GAS (G20)
WHEN CONVERTED USING CONVERSION KIT NO. 0595231 THIS
APPLIANCE IS FOR USE WITH PROPANE GAS (G31)
THIS APPLIANCE IS SUITABLE ONLY FOR INSTALLATION IN THE UNITED
KINGDOM (GB) AND THE REPUBLIC OF IRELAND (IE).
We trust that these instructions give sufficient details to enable this appliance to be
installed and maintained satisfactorily. However, if further information is required, our
Baxi Fires Division Technical Helpline will be pleased to help.
Telephone 08706 061 065 (National call rates apply in the United Kingdom).
In the Republic of Ireland telephone 0044 8706 061 065.
INSTALLER: Please leave this guide with the owner
© Baxi Heating U.K. Ltd.

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  • Page 1 We trust that these instructions give sufficient details to enable this appliance to be installed and maintained satisfactorily. However, if further information is required, our Baxi Fires Division Technical Helpline will be pleased to help. Telephone 08706 061 065 (National call rates apply in the United Kingdom).
  • Page 2 BS EN ISO 9001 quality system accepted by the British Standards Institute. The Highest Standards Baxi Fires Division is a member of the Society of British Gas Industries which works to ensure high standards of safety, quality and performance. Careful Installation Baxi Fires Division is a CORGI registered company.

  • Page 3: Table Of Contents

    INSTALLER GUIDE CONTENTS Section Heading Page 1. SAFETY 2. APPLIANCE DATA 3. GENERAL INSTALLATION REQUIREMENTS 4. PACK CONTENTS 5. FIREPLACE CHECK 5.1 Fireplace check. 5.2 Fireplace flue pull. 6. IGNITION CHECK 7. GAS SUPPLY CONNECTION 8. PREPARING APPLIANCE FOR INSTALLATION 8.1 Appliance preparation.

  • Page 4: Safety

    INSTALLER GUIDE 1. SAFETY Installer Before continuing any further with the installation of this appliance please read the following guide to manual handling The lifting weight of this appliance heat engine is 4.4 kg One person should be sufficient to lift the fire. If for any reason this weight is considered too heavy then obtain assistance.

  • Page 5: General Installation Requirements

    INSTALLER GUIDE Natural (G20) Propane (G31) * Inlet Pressure 20mbar 37mbar Input - Max. (Gross) 6.0kW (20,500Btu/h) 6.1kW (20,800Btu/h) Input - Min. (Gross) 2.3kW (7,850Btu/h) 3.8kW (12,965Btu/h) 20.0 ± 1.0mbar (8.0 ± 0.4in 37.0 ± 1.0 mbar (14.85 ± Inlet Test Pressure (Cold) w.g.) 0.4in w.g.) Gas Connection...
  • Page 6 INSTALLER GUIDE In Northern Ireland, the current edition of the Building regulations (Northern Ireland) issued by the Department of the Environment for Northern Ireland. In the republic of Ireland the installation must be carried out by a competent person and installed in accordance with: The current edition of IS 813 “Domestic gas installations”...
  • Page 7 INSTALLER GUIDE Incombustible mineral wool insulation of not less than 50mm thickness must be applied to the top surface of the firebox (See figure 2) and it must stand on a non-combustible hearth (See figure 1). 3.2.3 To a fireplace that has a precast concrete or clay flue block system conforming to BS1289 or BS EN 1806.
  • Page 8 INSTALLER GUIDE materials. Metal flue pipes must comply with B.S 715. 3.3.1 The minimum effective height of the flue must be 3m. 3.3.2 The flue must be clear of any obstruction and its base must be clear of debris. 3.3.3 The flue must be completely sealed so that combustion products do not come into contact with combustible materials outside the chimney.
  • Page 9 INSTALLER GUIDE 50mm above floor level to discourage the placing of carpets or rugs over it. The appliance must not stand on combustible materials or carpets (See figure 1). 3.10 The front face of the fireplace should be reasonably flat over the area covered by the hotbox top and side flange seals to ensure good sealing.
  • Page 10 INSTALLER GUIDE 3.15 Normal adventitious ventilation is usually sufficient to satisfy the ventilation requirements of this appliance. In GB reference should be made to BS 5871 Part 2 and in IE reference should be made to the current edition of IS 813 “Domestic gas Installations”...
  • Page 11 INSTALLER GUIDE A 10mm access clearance from a non-combustible surface is necessary at both sides (See figure 5). 3.19 Proprietary terminals must comply with BS 715 or BS 1289. Any terminal or termination must be positioned in accordance with BS 5440 Part 1 to ensure that the products of combustion can be safely dispersed into the outside atmosphere.

  • Page 12: Pack Contents

    INSTALLER GUIDE 4. PACK CONTENTS Remove all the items carefully to prevent damage. Take special care when handling the ceramic components. Some items may be contained in the packaging fitments - Examine the packaging carefully before discarding. Check that all the items are present and undamaged.

  • Page 13: Fireplace Check

    INSTALLER GUIDE 5. FIREPLACE CHECK 5.1 Fireplace check. 5.1.1 Fireplace size The fireplace must comply with the requirements described in section 3.2. This may entail removing the fireback and infill material behind the fireback. 5.1.2 Fireplace general condition The fireplace floor should be reasonably flat to ensure that the hotbox can be installed without it rocking and so that a good seal can be made at the bottom front of the box.

  • Page 14: Ignition Check

    INSTALLER GUIDE 6. IGNITION CHECK Before attempting to install, it is worth checking that the ignition system performs satisfactorily. Set the control knob to the ‘OFF’ position. Depress the control knob and rotate it anticlockwise to the ‘pilot ignition’ position. A 'click' will be heard as the integral piezo operates.

  • Page 15: Preparing Appliance For Installation

    INSTALLER GUIDE 8. PREPARING APPLIANCE FOR INSTALLATION 8.1 Appliance preparation. 1. Remove any transit tape and packing and inspect for any evidence of mishandling which might affect the performance. Each unit is flame tested before it leaves the factory and as a result there may be slight discolouration around the burner ports. 2.

  • Page 16: The Flue Restrictor

    INSTALLER GUIDE 8.4 The flue restrictor. This appliance is supplied with a flue restrictor for use where the flue draught is excessive. The restrictor must not be fitted where a precast flue or a 125mm flue liner is used. For flue liners greater than 125mm and all other installations the restrictor should be fitted.

  • Page 17: Firebox Installation

    INSTALLER GUIDE 9. FIREBOX INSTALLATION 9.1 Cable retention. 1. Make sure that the relevant areas at the fireplace back are sound enough to take the eyebolts. If these areas have deteriorated due to prolonged use they should be made sound with a suitable cement. 2.

  • Page 18: Floor Sealing

    INSTALLER GUIDE 7. Place the hotbox fully back into the fireplace opening so that it is sealed against the fireplace front surround. 8. Fit a cable retainer over the bottom end of each cable. 9. Pull each cable taut. Push the cable retainers hard up against the back panel.

  • Page 19: Burner Installation

    INSTALLER GUIDE 10. BURNER INSTALLATION 10.1 Burner and supply pipe installation. 1. Refit the burner unit to the hotbox using the two screws removed previously 2. Connect the supply line to the appliance. 3. If closed open the isolating valve at the inlet ‘T’ connector. 4.

  • Page 20: Ceramic Coals Installation

    INSTALLER GUIDE and set at maximum output. 2. After checking, turn off the appliance. Remove the pressure gauge and replace the test point sealing screw. 3. Relight the appliance. Turn to the maximum output position and test around the sealing screw for gas soundness with a suitable leak detection fluid.
  • Page 21 INSTALLER GUIDE 2. Install the fourteen loose overlay ceramic coals as follows. The smooth surfaces of the ceramic coals should be at the bottom and back. Place five of the ceramic coals along the top of the front base coal (See figure 21). The ceramic coals should be evenly spaced.

  • Page 22: Ceramic Pebbles Installation

    INSTALLER GUIDE 4. Place the remaining four ceramic coals on top of the base ceramic coal rear (See figure 24). Figure 24. Third row of ceramic coals 12. CERAMIC PEBBLES INSTALLATION This section is for models supplied with a ‘Pebble’ fuel effect only. For ‘Coal fuel effect’...
  • Page 23 INSTALLER GUIDE 3. Hold pebble ‘A’ upright with the arrow pointing to the top. Place pebble “A” on top of the base pebble (See figure 26). 4. Hold pebble ‘B’ upright with the arrow pointing to the top. Place pebble “B” on top of the base pebble. Figure 27.

  • Page 24: Firefront Installation

    A slotted firefront with a minimum free area as shown in figure 32 must always be used. For models supplied with a Baxi Fires Division firefront, the open area may differ slightly from that stated in figure 32. In these cases the firefront will have been tested with the fire and found to be satisfactory for use with the fire.

  • Page 25: Operating The Burner

    INSTALLER GUIDE 'click' will be heard as the integral piezo operates. A spark should be seen between the electrode and pilot tip. 3. Turn the control knob clockwise to the 'OFF' position. Repeat this operation until a flame appears at the pilot. There may be a delay before the pilot lights due to air being purged from the system.
  • Page 26 This monitoring system must not be adjusted, bypassed or put out of operation. This monitoring system, or any of its parts, must only be exchanged using Baxi Fires Division authorised parts.

  • Page 27: Final Review

    INSTALLER GUIDE 16. FINAL REVIEW 1. Visually inspect the appliance. Clean off any marks incurred during installation. 2. Advise the customer how to operate the fire. 3. Explain to the customer that the appliance has a flame failure and spillage monitoring system.

  • Page 28: Servicing And Parts Replacement

    INSTALLER GUIDE 17. SERVICING AND PARTS REPLACEMENT Always turn off the gas supply and allow to cool completely before commencing any servicing (The appliance inlet “T” connector incorporates an isolating valve). It is recommended that, at least once a year, the appliance is disconnected and the fireplace opening checked and cleared of any debris.

  • Page 29: Checking The Aeration Setting Of The Burner

    INSTALLER GUIDE 17.1 Checking the aeration setting of the burner. 1. The aeration shutter is factory set for use with a ‘pebble’ ceramic fuel effect. It is important to ensure that the aeration setting is correct for the ceramic fuel effect used. Check the aeration shutter setting even if fitting the ‘pebble’...

  • Page 30: To Remove The Gas Valve

    INSTALLER GUIDE 17.4 To remove the gas valve. (See figure 37). 1. Remove the burner unit (See section 17.2). 2. If lying the burner on its back, ensure that the work surface is suitably protected This will avoid damage to the work surface.Turn the burner unit upside down.

  • Page 31: To Remove The Appliance From The Fireplace

    INSTALLER GUIDE 17.7 To remove the appliance from the fireplace. 1. Remove the burner unit (See section 17.2). 2. Slacken the hexagonal adjusters on the cable retainers and unscrew the thumbscrews to release the cables. 3. Refit as described in the relevant installation sections.

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