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Baxi 741 Installer's Manual

Inset live fuel effect gas fire fitted with blenheim or sonnet fascia
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See also: Owner's Manual
5112225/01
INSTALLER GUIDE
Model 741
INSET LIVE FUEL EFFECT GAS FIRE
Fitted with
Blenheim
or
Sonnet
fascia
(GC No. 32-032-56)
THIS APPLIANCE IS FOR USE WITH NATURAL GAS (G20).
WHEN CONVERTED USING CONVERSION KIT NO. 0595211 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.
owner
INSTALLER: Please leave this guide with the
© Baxi Heating U.K. Ltd.

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Summary of Contents for Baxi 741

  • 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). In the Republic of Ireland telephone 0044 8706 061 065.
  • 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 6. IGNITION CHECK 7. GAS SUPPLY CONNECTION 8. PREPARING APPLIANCE FOR INSTALLATION 9. HOTBOX INSTALLATION 9.1 Method 1 - Front fixing to fireplace surround. 9.2 Method 2 - Cable retention and floor fixing.

  • 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 is 24.0kg. ! 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) 6.85kW (23,400 Btu/h) 6.7kW (22,860 Btu/h) Input - Min. (Gross) 2.3kW (7,850 Btu/h) 4.0kW (12,970 Btu/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.)
  • Page 6 INSTALLER GUIDE In Scotland, the current edition of the Building Standards (Scotland) Regulations issued by the Scottish Executive. 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 also conform to the relevant parts of: The current edition of IS 813 “Domestic Gas Installations”...
  • Page 7 INSTALLER GUIDE conform to those shown in figure 2. 3.2.3 To a precast concrete or clay flue block system conforming to BS1289 or BS EN 1806 with dimensions as in figure 3. The current versions of BS1289 and BS EN 1806 recommend that there should be an air space or insulation between the flue blocks and the...
  • Page 8 INSTALLER GUIDE 3.4 The flue must conform to BS 5440: Part 1 in design and installation. The flue, measured from the bottom of the fireplace opening to the bottom of the terminal, shall be not less than 3m in actual vertical height. When calculated in accordance with BS 5440: Part 1 Annex A, the minimum equivalent height of...
  • Page 9 INSTALLER GUIDE 50mm above floor level to discourage the placing of carpets or rugs over it. The surface of the hearth must be sufficiently flat to enable the bottom of the front surround and the bottom front cover to be aligned horizontally. Any excessive unevenness (uneven tiles, Cotswold stone, etc.) should be rectified.
  • Page 10 INSTALLER GUIDE performance of the appliance. Note the spillage test requirements detailed further on in this manual. If the fan is likely to affect the appliance, the appliance must not be installed unless the fan is permanently disconnected. 3.15 Normal adventitious ventilation is usually sufficient to satisfy the ventilation requirements of this appliance.
  • Page 11 INSTALLER GUIDE Figure 5. Appliance dimensions. 3.20 The appliance is fitted with an A.S.D (Atmosphere sensing device). If the appliance closes down after a period of operation for no apparent reason, the consumer should be informed to stop using the appliance until the installation and appliance have been thoroughly checked.

  • Page 12: Pack Contents

    INSTALLER GUIDE 4. PACK CONTENTS The items required for this appliance are packed in two sections. Section 1 - Fire Unit contains: Burner and hotbox unit. Burner front baffle. Nut and olive for 8mm inlet pipe. ‘T’ connector and pressure test point. Flue restrictor plate.
  • Page 13 INSTALLER GUIDE Figure 6. Pack contents Page 13...

  • Page 14: 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 will probably entail removing the fireback and infill material behind the fireback. The debris catchment area shown in figure 7 must be kept clear of obstructions.

  • Page 15: Ignition Check

    INSTALLER GUIDE If method 2 is chosen, make sure that the areas at the back and towards the centre of the fireplace floor are sound enough to take the eyebolts and screws. If these areas have deteriorated due to prolonged use, they should be made sound with a suitable cement. 5.1.4 Installations using a metal flue box The whole of the top surface of the metal flue box must be covered with a minimum 100mm layer of mineral wool or equivalent insulation (See figure 2).

  • Page 16: Gas Supply Connection

    INSTALLER GUIDE 7. GAS SUPPLY CONNECTION A nut and olive are provided for an 8mm pipe inlet connection to the ‘T’ connector at the bottom front of the appliance. The ‘T’ connector can be rotated to allow a connection from any direction. The ‘T’ connector includes a valve for isolating the gas supply and a pressure test point.
  • Page 17 INSTALLER GUIDE 5. The appliance is supplied with two fireback spacers. Do not fit the fireback spacers if the fire is to be installed into a precast or clay flue block system as in section 3.2.3. These should extend backwards to ensure sufficient clearance from the back of the fireplace.

  • Page 18: Hotbox Installation

    INSTALLER GUIDE 7. There is a length of self adhesive foam seal supplied with the fire. This will need to be fitted to the outer rear edges of the side and top flanges of the hotbox. Cut a 485mm length of foam seal. Be careful not to stretch the seal when measuring.

  • Page 19: Method 2 - Cable Retention And Floor Fixing

    INSTALLER GUIDE the hotbox (See figure 15). 4. Remove the hotbox. Drill four holes in the fireplace front surround at the marked positions using a no.12 masonry drill. 5. Insert a fibre plug into each hole. 6. Place the hotbox back in position in the fireplace.
  • Page 20 INSTALLER GUIDE through the back of the hotbox. If a concealed connection is being used, insert the hotbox into the fireplace feeding the supply pipe through the pierced hole in the rear grommet. 5. The hotbox has two holes at each side of the spillage plate.

  • Page 21: Sealing Floor Front

    INSTALLER GUIDE fireplace surround. If the hotbox is aligned squarely and the sealing is Side entry Rear entry satisfactory, fully tighten the cable retainers. 13. If the hotbox is not correctly aligned, release the tension on the cables by slackening the screws and turning the hexagonal adjusters fully anticlockwise.

  • Page 22: Burner & Supply Pipe Installation

    INSTALLER GUIDE 10. BURNER & SUPPLY PIPE INSTALLATION 10.1 Burner and supply pipe installation. 1. Refit the burner unit to the hotbox with two screws. 2. Connect the supply line to the appliance. 3. Turn on the gas supply and pressure check the installation pipework for gas soundness.

  • Page 23: Inlet Pressure Check

    INSTALLER GUIDE 10.3 Inlet pressure check. The appliance is pre-set to give the correct heat input at the inlet pressure shown in section 2 of this manual. No adjustment is necessary. 1. Check the inlet pressure by fitting a pressure gauge at the test point.

  • Page 24: Front Fascia Fitting

    INSTALLER GUIDE 2. Fit the ceramic side walls against the side faces of the burner compartment. The bottom edges of the walls should rest in the ledges at the sides of the firebox. Slide them in from the front and ensure that they touch the rear wall.

  • Page 25: Ceramic Coals Installation

    INSTALLER GUIDE 13. CERAMIC COALS INSTALLATION 1. Place the ceramic base coal in the burner compartment. The bottom rear face of the coal should rest on the angled ledges at the back of the burner compartment. The bottom front recess edges on the coal base should locate against the tags at the front of Figure 27.
  • Page 26 INSTALLER GUIDE 3. Locate the two large ceramic coals at the ends of the front base ceramic coal. The large ceramic coals have two sides that are smooth. Locate one smooth side along the side of the hotbox and the other to the rear (See figure 29). 4.

  • Page 27: Firefront Castings Installation

    INSTALLER GUIDE 8. Locate a small ceramic coal behind the central medium ceramic coal. This should be held in place between the medium ceramic coal and the ceramic base coal (See figure 32). Locate the remaining small ceramic coals each side of that located previously.

  • Page 28: Check For Spillage

    INSTALLER GUIDE 15.1.2 Operating the burner. 1. When the pilot burner is operating properly, gradually turn the control knob anti- clockwise to 'HIGH' (Depress the knob slightly to get past the pilot ignition position). The main burner should now light. Depress the control knob slightly to release from the 'HIGH' position and turn back (clockwise) to 'LOW'.

  • Page 29: Flame Supervision And Spillage Monitoring System

    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 30: Final Review

    INSTALLER GUIDE 16. FINAL REVIEW 1. If a gap is visible between the inner sides of the fascia and the ceramic side walls, gently slide the walls forward. 2. Visually inspect the appliance. Clean off any marks incurred during installation. 3.

  • Page 31: Servicing & Parts Replacement

    INSTALLER GUIDE 17. SERVICING & PARTS REPLACEMENT Always turn off the gas supply 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 32: To Remove The Fascia

    INSTALLER GUIDE 17.2 To remove the fascia. 1. Remove the bottom front cover and the fire front casting. 2. The fascia is made up of three pieces. These pieces are held in place by magnets. Remove the top fascia piece by pulling forward. Place carefully aside (See figure 35).

  • Page 33: To Remove The Gas Valve

    INSTALLER GUIDE 17.5 To remove the gas valve. (See figure 38). 1. Remove the burner unit (See section 17.3). 2. If lying the burner on its back, ensure that the work surface is suitably protected. This will avoid damage to the work surface.

  • Page 34: To Replace The Burner

    INSTALLER GUIDE 6. Push the plug into the valve body and position the slot in line with the mark previously made on the valve body. 7. Reassemble the niting head and spindle complete with collar and spring making sure that the components are correctly engaged. Check the operation of the valve. 8.

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