Baxi COMBI 224 Installation And Service Manual
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Baxi COMBI 224 Installation And Service Manual

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United Kingdom
en
Installation and Service Manual
High Efficiency Wall Hung Condensing Gas Boiler
Baxi Combi
224 — 228 — 424 — 428
These instructions include the Benchmark Commissioning Checklist and should be left with the
user for safe keeping.They must be read in conjunction with the Flue Installation Guide.

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  • Page 1 United Kingdom Installation and Service Manual High Efficiency Wall Hung Condensing Gas Boiler Baxi Combi 224 — 228 — 424 — 428 These instructions include the Benchmark Commissioning Checklist and should be left with the user for safe keeping.They must be read in conjunction with the Flue Installation Guide.
  • Page 2 Dear Customer, Thank you very much for buying this appliance. Please read through the manual carefully before using the product, and keep it in a safe place for later reference. In order to ensure continued safe and efficient operation we recommend that the product is serviced regularly. Our service and customer service organisation can assist with this.

  • Page 3: Table Of Contents

    Contents Contents Safety ................... . 6 Benchmark .
  • Page 4 Contents 5.3.3 Bath and shower rooms ..............29 5.3.4 Ventilation .
  • Page 5 Contents 10.2.4 Checking the burner and cleaning the heat exchanger ......... 54 10.3 Specific maintenance instructions .

  • Page 6: Safety

    1 Safety Safety Benchmark 1.1.1 Building Regulations and the Benchmark Commissioning Checklist Building Regulations (England & Wales) require notification of the installa­ tion of a heating appliance to the relevant Local Authority Building Control Department. This can be achieved via a Competent Persons Self Certifica­ tion Scheme as an option to notifying the Local Authority directly.

  • Page 7: Installer Notification Guidelines

    1 Safety 1.1.3 Installer Notification Guidelines Fig.2 Installer Notification Guidelines Choose Building Regulations Notification Route Competent Person's Building Control Self Certification Scheme Contact your relevant Local Install and Commission this Authority Building Control appliance to manufacturer's (LABC) who will arrange instructions an inspection or contact a government approved...

  • Page 8: General Safety Instructions

    1 Safety General safety instructions Danger This boiler can be used by children aged 8 years and above and by persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge when they have been given supervision or instruction concerning the safe use of the device and understand the resulting risks.

  • Page 9: Recommendations

    1 Safety Recommendations Warning Installation and maintenance of the boiler must be carried out by a qualified installer in accordance with local and national regula­ tions. Warning If the mains lead is damaged, it must be replaced by the original manufacturer, the manufacturer's dealer or another suitably skilled person to prevent hazardous situations from arising.

  • Page 10: Liabilities

    1 Safety Preparation Co-ordinate movements - know where, and when, you are both going. Minimise the number of times needed to move the boiler - plan ahead. Always ensure when handling or lifting the route is clear and unobstruc­ ted. If possible avoid steps, wet or slippery surfaces, unlit areas etc. and take special care on ladders/into lofts.
  • Page 11 1 Safety Get your installer to explain your installation to you. Have the required inspections and maintenance carried out by a quali­ fied installer. Keep the instruction manuals in good condition close to the appliance. 7661586 - 2 - 12072016...

  • Page 12: About This Manual

    2 About this manual About this manual General This manual is intended for the installer of a Baxi Combi boiler. Additional documentation These Installation & Service Instructions must be read in conjunction with the Flue Installation Guide supplied in the Literature Pack.

  • Page 13: Technical Specifications

    3 Technical specifications Technical specifications Homologations 3.1.1 Directives Our company declares that these products are provided with the CE mark­ ing in compliance with the essential requirements of the following direc­ tives: Gas Directive 2009/142/EC; Electromagnetic Compatibility Directive 2014/30/EU General standards: EN 61000-6-3, EN 61000-6-1 Standard in reference to: EN 55014;...

  • Page 14: Technical Data

    Treatment of water in domestic hot water central heating systems. Technical data 3.2.1 Technical information Note All data in these sections are nominal and subject to normal pro­ duction tolerances. Tab.5 General Baxi Combi Gas Council Numbers 47–077–21 47–077–22 47–077–23 47–077–24 Nominal heat input Domes­ Nett (Qn 24.7 28.9...
  • Page 15 3 Technical specifications Baxi Combi Nominal Heat Input — Min­ Nett (Qn imum Rate Gross (Qn Hs) Nominal heat output 24.0 28.0 24.0 28.0 80/60°C — Domestic Hot Water — Maximum Rate Nominal heat output 20.0 24.0 20.0 24.0 80/60°C — Central Heating —...
  • Page 16 3 Technical specifications Tab.8 Characteristics of combustion Baxi Combi Natural gas rate (G20) Qmax 2.61 3.06 2.61 3.06 Natural gas rate (G20) Qmin 0.52 0.52 0.52 0.52 Diameter of coaxial discharge 60/100 & 80/125 60/100 & 80/125 60/100 & 80/125 60/100 &...

  • Page 17: Technical Parameters

    3 Technical specifications Tab.12 Clearances Baxi Combi Above casing Below casing (min) Below casing (recommended) Front — for servicing (min) Front — for servicing (recommen­ 1000 1000 1000 1000 ded) Front — for operation Sides LH Sides RH Tab.13 Weights...

  • Page 18: Dimensions And Connections/Clearances

    3 Technical specifications Baxi Combi Sound power level, indoors Emissions of nitrogen oxides mg/kWh Domestic hot water parameters Declared load profile Daily electricity consumption 0.151 0.151 0.151 0.151 elec Annual electricity consumption ƞ Water heating energy efficiency Daily fuel consumption 22.770...
  • Page 19 3 Technical specifications Fig.5 Paper template Clearance above 178 116 Dia Minimum Aperture For Flue Tube Vertical Flue Centre Line Ø 8 Side Clearance 5 Side Clearance 5 View from under boiler Wall 82.5 33.5 67.5 Hot Water Cold Water Heating Heating Outlet...

  • Page 20: Electrical Diagram

    3 Technical specifications Electrical diagram Fig.6 Electrical diagram Circuit Board F1 (1,6A) ‘A’ Connection Board ‘B’ X9-1 230V - 50Hz X6-A X1-A L-BUS X14-A X2-A X5-A L(CH) X3-A L(DW) X4-A Bl Br W8-2 W8-4 W8-1 W8-3 R Bk Bk Bl Gn DS RS PWM - P L-BUS...
  • Page 21 3 Technical specifications Tab.15 Electrical connections inside the boiler (A) Electrical power supply 230 V — 50 Hz 1: Earthing connector X1–A 2: L (230 V) 3: N Pump 1: Earth connection X2–A 2: L (230 V) 3: N 3-way valve 1: L (CH) 230 V —...

  • Page 22: Description Of The Product

    Description of the product General description The Baxi Combi condensing boiler is a gas-fuelled boiler. The purpose of this boiler is to heat water to a temperature that is lower than boiling point at atmospheric pressure. It must be connected to a heating installation and to a domestic hot water distribution system that is compatible with its pow­...

  • Page 23: Heating And Domestic Hot Water Production

    4 Description of the product 4.2.3 Heating and domestic hot water production Main components Fig.7 Component description Boiler case Mounting slots for wall bracket Flue adaptor Expansion vessel air control/filling valve Expansion vessel Burner door Detection/ignition electrode Water circuit-expansion vessel connection pipe Air-gas assembly (control board, fan, mixer valve) Automatic air vent Gas valve...

  • Page 24: Standard Delivery

    The table below shows the accessories available for this boiler range. Tab.17 Optional accessories Part number Accessory 7658276 Baxi plug-in 24 hr mechanical timer combi - RH 7658523 Baxi plug-in 7 day digital timer combi - RH 7658781 Baxi plug-in receiver 24 hr RF programmable mech room...

  • Page 25: Before Installation

    5 Before installation Before installation Installation regulations Warning Installation, repair and maintenance must only be carried out by a competent person. This document is intended for use by compe­ tent persons. Installation must be carried out in accordance with the prevailing regula­ tions, the code of practice and the recommendations in these instructions.

  • Page 26: System Control

    Complete the label supplied with the inhibitor and attach to the inside of the boiler case. Detail of system treatment should be added for future ref­ erence. For information or advice regarding any of the above contact Baxi Custom­ er Support 0344 871 1545. 5.2.7 Showers If a shower control is supplied from the appliance it should be of the ther­...

  • Page 27: Pump Available Head

    5 Before installation 5.2.9 Pump available head Fig.10 Pump available head graph This is a two-speed (85% CH and 100% DHW) high static head pump fit for installation on any type of single or double pipe CH system. The auto­ matic air valve incorporated in the pump allows quick venting of the heat­...

  • Page 28: Data Plate And Service Label

    5 Before installation If the boiler is fitted in a room containing a bath or shower reference must be made to the relevant requirements. In GB this is the current IEE Wiring Regulations and Building Regulations. In IE reference should be made to the current edition of IS 813 Domestic Gas Installations and the current ETCI rules.

  • Page 29: Bath And Shower Rooms

    5 Before installation 5.3.3 Bath and shower rooms Fig.15 Bathroom 1 Zone 0 Zone 1 Zone 2 Window recess Zone 2 0.6m PN-0000200 Fig.16 Bathroom 2 Note Where an optional plug-in integral timer, RF receiver or thermostat is NOT FITTED the boiler has a protection rating of IPX5D and if installed in a room containing a bath or shower can be within Zone 2 (but not 0 or 1).
  • Page 30 5 Before installation 500mm mimimum. Basement or similar (heated) Condensate pump Unheated Location (e.g. Garage) Fig.18 Methods of termination Tab.21 Examples are shown of the following methods of termination Description Termination to an internal soil and vent pipe. External termination via internal discharge branch e.g. sink waste —...
  • Page 31 5 Before installation Fig.19 Methods of termination continued Note Failure to install the condensate discharge pipework correctly will affect the reliable operation of the boiler. Careful consideration must be given to the possibility of the pipe­ work being subject to freezing conditions and appropriate meas­ ures taken to prevent blockage.

  • Page 32: Clearances

    5 Before installation 5.3.6 Clearances Fig.20 Clearances A flat vertical area is required for the installation of the boiler and it should be capable of bearing the weight of the boiler when full of water. These dimensions include the necessary clearances around the boiler for case removal, spanner access and air movement.
  • Page 33 5 Before installation Description Description Horizontally to an opening, air brick, From an opening in carport (e.g. door, 1200 opening window etc. window) into the dwelling Below gutters, soil pipes or drain pipes 25 (75) Vertically from a terminal on the same 1500 wall Below eaves...

  • Page 34: Horizontal Flue/Chimney Systems

    5 Before installation 5.3.8 Horizontal flue/chimney systems Fig.24 Horizontal flues 315mm to 500mm Flue trims This bend is equivalent to 1 metre Total equivalent length = A+B+C+2x90° bends Note Horizontal flue extensions should always be installed with a fall of at least 1.5°...

  • Page 35: Terminal Guard

    5 Before installation 5.3.10 Terminal guard Fig.25 Terminal guard Ensure that no part of the white outer chimney duct is visible. When codes of practice dictate the use of terminal guards Multifit accesso­ ry part no. 720627901 can be used Note This guard is not compatible with Flue Deflector referred to below.
  • Page 36 5 Before installation Remove the polystyrene by slipping it off upwards (6). Remove the carton by pulling it upwards (7). Snap off the rear part of the polystyrene at the bottom (8). Note Polystyrene base should be removed completely if fitting the boiler into a space with minimum side clearances of 5mm each side.

  • Page 37: Initial Preparation

    5 Before installation 5.5.2 Initial preparation Fig.28 Template 1. After considering the location position the fixing template on the wall ensuring it is level both horizontally and vertically. 2. Mark the position of the fixing slots for the wall bracket indicated on the template.

  • Page 38: Domestic Hot Water Circuit

    5 Before installation Fig.31 Filling loop Filling loop Flow and return taps A filling loop is supplied with the 424 and 428 models. The filling method adopted must be in accordance with all relevant water supply regulations and use approved equipment. Your attention is drawn to: for GB: Guidance G24.2 and recommendation R24.2 of the Water Regu­...
  • Page 39 Even in circumstances where a non-return device is not fitted any future modifications to the mains inlet (e.g. fitting of a water meter) should be considered and an expansion vessel fitted. Baxi cannot accept any responsibility for damage to the boiler if these recom­...

  • Page 40: Installation

    6 Installation Installation General Installation must be carried out in accordance with the prevailing regula­ tions, codes of practice and the recommendations in this manual. Danger If the boiler is installed in a compartment do not use it for storage purposes.

  • Page 41: Preparation

    6 Installation Ensure the discharge of condensate complies with any national or local regulations in force (see British Gas "Guidance Notes for the Installation of Domestic Gas Condensing Boilers" & HHIC recom­ mendations). See Section 5.3.5 Condensate drain. 2. The straight rubber coupling will accept 21.5mm ( in) plastic over­...

  • Page 42: Electrical Connections

    6 Installation Fig.37 Attaching the flue 8. Remove the flue elbow and insert the flue through the hole in the wall. Fit the flue trims if required, and refit the elbow to the boiler adaptor, ensuring that it is pushed fully in. Secure the elbow with the screws supplied in the boiler fitting kit.

  • Page 43: Electrical Connections Of The Boiler

    6 Installation 6.5.2 Electrical connections of the boiler Fig.38 Electrical connections Access the connection board located below the control panel to make the electrical connections by: 1. Fully unscrewing the two screws retaining the electrical cover at the bottom of the front panel and then remove the cover. 2.

  • Page 44: Filling The Installation

    6 Installation 6.6.2 Filling the installation 1. A filling loop is supplied with the 424/428 models. It can be fitted to the cold mains inlet and the CH return isolation taps. 2. Fill the installation using approved equipment and in accordance with all relevant water supply regulations.

  • Page 45: Commissioning

    7 Commissioning Commissioning General Reference should be made to BS:EN 12828, 12831 & 14336 when com­ missioning the boiler. Ensure that the condensate drain trap has been primed. At the time of commissioning, complete all relevant sections of the Bench­ mark Checklist at the rear of this publication.

  • Page 46: Commissioning Procedure

    7 Commissioning Commissioning procedure 7.3.1 De-Aeration function Fig.39 Initialisation process Before turning on the power to the boiler, rotate the Central Heating con­ trol knob fully clockwise. The purpose of the function is to remove as much air as possible from the heating system.

  • Page 47: Checking Combustion - Chimney Sweep Mode

    7 Commissioning Fig.41 Gas inlet test point Gas inlet test point 1. With the boiler operating in the maximum rate condition check that the operational (working) gas pressure at the inlet gas pressure test point is in accordance with BS 6798 & BS 6891. This must be AT LEAST 17mb ! 2.
  • Page 48 7 Commissioning Fig.43 Chimney sweep procedure Measuring the combustion Note The system MUST be cold to ensure the boiler is operating under full demand. 1. Turn the Central Heating and Domestic Hot Water control knobs fully clockwise. 2. Activate the Chimney Sweep mode by pressing the Chimney Sweep button for 3 seconds (A).
  • Page 49 7 Commissioning Fig.44 Combustion procedure Set Boiler to Maximum Rate Allow the combustion to stabilise. Do not insert probe to avoid ‘flooding’ the analyser. Perform Flue Integrity Combustion Check Insert the analyser probe into Verify Flue Integrity the air inlet test point, allowing Indication that products of Check CO &...

  • Page 50: Configuring The System

    7 Commissioning Configuring the system 7.5.1 System draining If at any time after installation it is necessary to drain and refill the central heating system (e.g. when replacing a radiator) the De-Aeration function must be activated to avoid air being trapped in the system. Section —...

  • Page 51: Operation

    8 Operation Operation Use of the control panel 8.1.1 Control Fig.45 Operating the controls 1. The controls are operated by the buttons and knobs shown. Central heating water temperature control Domestic Hot Water temperature control Reset button PN-0000289 Start up If there is no power to the boiler, switch on at the fused spur unit and en­...

  • Page 52: Settings

    9 Settings Settings Functions The operating functions of the boiler have been factory set to suit most systems. See table below for a list of display functions. Section 11.4 gives further information. Information menu Tab.26 Information list Information Description Status Sub-status °C Heating water temperature (°C)

  • Page 53: Maintenance

    10 Maintenance 10 Maintenance 10.1 General Warning When changing components ensure that both the gas and electri­ cal supplies to the boiler are isolated before any work is started. When the component has been changed recommission the boiler. Always examine any seals or gaskets, replacing where necessary. The case front panel MUST seal effectively against the boiler side panels.

  • Page 54: Periodic Check And Maintenance Procedure

    10 Maintenance 10.2 Periodic check and maintenance procedure Warning Before performing any operation, make sure the boiler is not pow­ ered on. Once the maintenance operations are complete, reset the original boiler operating parameters if they were changed. Warning Wait for the combustion chamber and pipes to cool down. Note The appliance must not be cleaned using abrasive, aggressive and/or easily flammable substances (e.g.

  • Page 55: Specific Maintenance Instructions

    10 Maintenance 7. Check that the detection/spark electrode is not worn. Replace the electrode if necessary. 8. Check the condition of the burner, the gasket and the insulation board. 9. Any loose deposits in the heat exchanger should be removed using a vacuum cleaner.

  • Page 56: Ntc Flue Sensor

    10 Maintenance 10.3.2 NTC flue sensor Fig.48 Removing the NTC flue sensor 1. Turn the sensor 90° anticlockwise to remove — it is a bayonet con­ nection. 2. Ease the retaining tab on the sensor away and disconnect the elec­ trical plug.

  • Page 57: Burner/Combustion Chamber Door Assembly

    10 Maintenance 10.3.6 Burner/combustion chamber door assembly Fig.52 Removing the burner 1. Remove the detection/spark electrode. Section 10.3.1 2. Hinge the control box down. 3. Hinge down the air/gas cover and disconnect all wiring plugs from the PCB, noting their positions. Close the air/gas cover. 4.

  • Page 58: Insulation

    10 Maintenance The CO at MAXIMUM rate should be 9% +0.4, –0.2. Alter the CO if nec­ essary by adjusting the gas valve. Use the Maximum rate adjustment screw (B) to alter the CO . Turn anti- clockwise (B1) to increase the CO or clockwise (B2) to reduce the CO Note Do not turn the adjustment screw more than 1/8 of a turn at a...

  • Page 59: Heat Exchanger

    10 Maintenance 10.3.9 Heat exchanger Fig.56 Heat exchanger location bracket 1. Remove the boiler front panel. 2. Hinge down the controls door. Warning Ensure all wiring and electronics are protected before draining down. 3. Close the flow and return isolation taps. 4.

  • Page 60: Hydraulics Maintenance

    10 Maintenance 10.4 Hydraulics maintenance 10.4.1 Expansion vessel Warning Take precautions to protect other components from water damage when removing the expansion vessel. Fig.57 Removing the expansion vessel 1. Close the flow and return isolation taps and drain the primary circuit. 2.

  • Page 61: Auto Air Vent

    10 Maintenance 10.4.3 Auto air vent Warning Take precautions to protect other components from water damage when removing the air vent. Fig.59 Removing the auto air vent 1. Close the flow and return isolation taps and drain the boiler primary circuit.

  • Page 62: Hydraulic Pressure Sensor

    10 Maintenance 10.4.5 Hydraulic pressure sensor Fig.61 Removing the hydraulic pressure 1. Close the flow and return isolation taps. sensor 2. Drain the primary circuit. 3. Hinge the control box down. 4. Remove the air/gas unit. To remove see section 10.3.7 Air/gas unit paragraph 1 to 6. 5.

  • Page 63: Diverter Valve Motor

    10 Maintenance 10.4.8 Diverter valve motor Fig.64 Removing the diverter valve motor 1. Hinge the control box down. 2. Remove the air/gas unit. To remove see section 10.3.7 Air/gas unit paragraph 1 to 6. 3. Undo the screw securing the electrical plug to the motor unit. Dis­ connect the plug.

  • Page 64: Troubleshooting

    11 Troubleshooting 11 Troubleshooting 11.1 Error codes Error messages are displayed according to the type of fault. Temporary fault A temporary fault is indicated by an ‘H’ followed by a two-digit code num­ ber (e.g. .02). This code flashes and alternates with a second two-digit code (e.g.

  • Page 65: Fault Finding - Permanent Faults

    11 Troubleshooting Group Specific Description Probable cause Check/Reason code code H:01 No circulation of water Non-existent or insufficient circu­ Check circulation lation Check water pressure Sensor error Check sensors are operating correctly Check that the sensor has been correctly fitted Check the cleanliness of the heat exchanger Check pump...
  • Page 66 11 Troubleshooting Group Specific Description Probable cause Check/Reason code code E:00 Return temperature sensor Sensor not or badly connected Check the wiring short-circuit Bad connection Check that the sensors are oper­ Sensor fault ating correctly Check that the sensor has been correctly fitted Replace the sensor if necessary E:01...
  • Page 67 11 Troubleshooting Group Specific Description Probable cause Check/Reason code code E:02 On board CSU time-out Check PCB for damage Replace the PCB if necessary E:02 Permanent loss of communica­ Fault in air/gas unit Replace air/gas unit tion between gas valve and boil­ Loose connection to gas valve Check gas valve connection er PCB...
  • Page 68 11 Troubleshooting Group Specific Description Probable cause Check/Reason code code E:04 Maximum safe temperature No circulation Vent the air in the heating sys­ reached (Safety thermostat Sensor not or badly connected open-circuited) Bad connection Check the water pressure Sensor fault Check the wiring Check the circulation (direction, pump, valves)

  • Page 69: Accessing The Information Menu

    11 Troubleshooting 11.4 Accessing the information menu Fig.67 Press the 1. The key is used to access the various menus and to scroll up and down the information in the Information menu. MW-3000237-2 Fig.68 Accessing the information menu 2. To access the Information menu, briefly press the key once.
  • Page 70 11 Troubleshooting STATUS DISPLAY Burner off Pump post circulation Burner off to reach the temperature setpoint Temporary fault Permanent fault (fault to be reset manually) Chimney sweep function at minimum output Chimney sweep function at maximum output in heating mode Chimney sweep function at maximum output in domestic water mode Manual heat request Frost protection function active...

  • Page 71: Decommissioning

    12 Decommissioning 12 Decommissioning 12.1 Decommissioning procedure Disconnect the gas & electric supplies and isolate them. Drain the primary circuit and disconnect the filling device. Dismantle the chimney system and remove the boiler from the wall mount­ ing frame. 7661586 - 2 - 12072016...

  • Page 72: Spare Parts

    13 Spare parts 13 Spare parts 13.1 Short parts list The following spares are available: Fig.69 Spare parts Tab.31 Part number and description of spare parts Key No. Description Part Number Safety thermostat 7661894 Detection/Spark ignition electrode 7661804 Flow sensor and Return sensor 7662085 NTC flue sensor 7662034...

  • Page 73: Appendix

    If changing gas valve adjust & re-check as described in section 10.3.7 Measure & record combustion • If incorrect at commissioning call Baxi Customer Support 0344 871 1545 • If incorrect when changing gas valve adjust & re-check Stop chimney sweep mode by pressing...

  • Page 74: Benchmark Commissioning Checklist

    14 Appendix 14.2 Benchmark 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. Failure to install and commission according to the manufacturer’s instructions and complete this Benchmark Commissioning Checklist will invalidate the warranty.

  • Page 75: Service Records

    14 Appendix ALL INSTALLATIONS At max. rate: ppm AND CO/CO ² Ratio Record the following: At min. rate: (where possible) ppm AND CO/CO ² Ratio The heating and hot water system complies with the appropriate Building Regul The boiler and associated products have been installed and commissioned in accordance with the manufacturer’s The operation of the boiler and system controls have been demonstrated to and understood by the The manufacturer’s literature, including Benchmark Checklist and Service Record, has been explained and left with the Commissioning Engineer’s Signature...
  • Page 76 14 Appendix SERVICE 07 SERVICE 08 Date: Date: Engineer name: Engineer name: Company name: Company name: Telephone No: Telephone No: Gas safe register No: Gas safe register No: At max. rate: ppm AND CO ² % At max. rate: ppm AND CO ²...
  • Page 77 14 Appendix 7661586 - 2 - 12072016...
  • Page 78 14 Appendix 7661586 - 2 - 12072016...
  • Page 79 © Copyright All technical and technological information contained in these technical instructions, as well as any drawings and technical de­ scriptions supplied, remain our property and shall not be multiplied without our prior consent in writing. Subject to alterations.
  • Page 80 For the warranty to be maintained, please make sure... Benchmark checklist is completed Warranty is registered within 30 days The boiler has an annual service For full terms and conditions, visit www.baxi.co.uk/terms. Failure to adhere to terms and conditions will void your manufacturer’s warranty. Baxi Brooks House,...

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Combi 228Combi 424Combi 428

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