Baxi Potterton BBU 15 HE manual Annual Servicing

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9.0Annual Servicing

9.1Annual Servicing

Flue Sampling Plug

1.For reasons of safety and economy, it is recommended that the boiler is serviced annually. Servicing must be performed by a competent person in accordance with B.S. 7967-4.

2.After servicing, complete the relevant Service Interval Record section of the Benchmark Commissioning Checklist at the rear of this publication.

3.Disconnect the firefront electric supply. Remove the fascia from the firefront. Unhook its hanging brackets from the slots in the top of the firefront. On Classica and Innova models also disengage the retaining magnets at the lower part of the fascia.

4.Slacken the firefront retaining wire and unthread it from the bracket on top of the boiler. The firefront can now be manoeuvred away from the boiler. Do not drag the firefront as it may damage the hearth. To completely remove the firefront disconnect the boiler control cable.

IMPORTANT: During routine servicing, and after any maintenance or change of part of the combustion circuit, the following must be checked:-

The integrity of the flue system and the flue seals, as described in Section 7.2.

The integrity of the boiler combustion circuit and relevant seals as described in Section 9.2.

The operational gas inlet pressure as described in Section

8.2.14to 8.2.16 and the gas rate as described in 8.2.17. The combustion performance as described in 9.1.5 to 9.1.6.

Competence to carry out checking Combustion Performance

B.S. 6798 ‘Specification for Installation &Maintenance of Gas Fired Boilers not exceeding 70kW’ advises that:-

The person carrying out a combustion measurement should have been assessed as competent in the use of a flue gas analyser and the interpretation of the results.

Fig. 41

Off Position

On Position

Fig. 42

The flue gas analyser used should be one meeting the requirements of BS7927 or BS-EN50379-3 and be calibrated in accordance with the analyser manufacturers’ requirements.

Competence can be demonstrated by satisfactory completion of the CPA1 ACS assessment, which covers the use of electronic portable combustion gas analysers in accordance with BS 7967, Parts 1 to 4.

Check the Combustion Performance

5. Set the boiler to operate at maximum rate as described in Section 11.1.2 to 11.1.6.

6. Remove the threaded plug from the sampling point, insert the analyser probe and obtain the CO/CO2 ratio. This must be less than 0.004.

7. If the combustion reading is greater than this, and the integrity of the flue system and combustion circuit seals has

been verified, and the inlet gas pressure and gas rate are

satisfactory either adjust the gas valve (Section 11.0), replace the gas valve (Section 10.8)or contact the ‘heateam’ Technical Helpline (0844 871 1555).

© Baxi Heating UK Ltd 2009

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Contents Baxi Bermuda BBU 15 HE 0086 Scheme Members only Installer Notification GuidelinesImportant Installation, Commissioning, Service & Repair LegislationCodes of Practice, most recent version should be used Safe Manual Handling Contents Contents IntroductionDescription Layout Fig General LayoutFlue Kit 10m & 12.5m a Bermuda HE Cbbu 15 HE Technical DataThere is a drain cock supplied in the plumbing kit System DetailsWater Circulating Systems Treatment of Water Circulating SystemsPipework System ControlsStorage Systems Sealed Systems Figs , 7 Sealed Systems Fireplace Opening & Surround Site RequirementsBuilders Opening Fig LocationNo Horizontal Runs are Permitted FlueElectrical Connection Gas Connection VentilationGas Supply Fig Electrical Supply FigCondensate Disposal Fig Condensate Drain GeneralFrom Boiler 500mm Min Total volume of the sump is 1.5 litresCondensate Disposal Condensate Pump OperationBoiler Internal Illustrated Wiring Diagram Boiler Internal WiringInstallation Initial PreparationFlue System Barb ‘C’ Clip Air Cowl Air Duct Collar Ribs Terminal Cap Electrical Connection Siting the BoilerWater Connections Gas ConnectionCompletion & Commissioning CompletionCommissioning the Boiler Test Point Annual Servicing Annual ServicingAnnual Servicing Inspection Spark Generator Fig Electrode Assembly FigChanging Components Changing ComponentsBurner Spark Generator Plug Gas Feed Pipe Injector Fan FigBurner Fig Spark Generator Plug Electrode Fan InjectorGas Valve Fig Injector Gas Valve Earth WireNTC Fig Safety Thermostat FigFloat Switches Fig PCB FigSetting the Gas Valve Setting the Gas Valve CO2 checkFlue Sampling Point Display Control Knobs Fault Finding Initial Fault Finding ChecksError Codes Go to section ‘A’ Error 110 flashingBurner lights Press the Service Reset Switch for 5 secondsSpark gap and position Check wiring Clean condensate drain systemX2 connector, is 230V AC across Terminals 1 Voltage at PCB X2 connector isReplace flame sensing electrode Replace Safety ThermostatShort Parts List 13.0 Short Parts ListPage Page Page GAS Boiler System Commissioning Checklist Date Energy Efficiency Checklist completed? Service RecordAfter Sales Service 0844 871 Warranty & ServiceSerial Number Date of Installation Installer Details name, address and contact numbers

BBU 15 HE specifications

The Baxi Potterton BBU 15 HE is a high-efficiency boiler designed to offer exceptional performance for both heating and hot water needs in residential settings. Known for its robust build quality and user-friendly features, this model is particularly favored for its versatility and reliability in various home environments.

One of the standout features of the Baxi Potterton BBU 15 HE is its compact size, making it suitable for installation in smaller spaces. Despite its small footprint, it delivers impressive outputs, making it ideal for homes with moderate heating demands. The boiler’s high efficiency rating ensures reduced energy consumption, leading to lower utility bills and a smaller carbon footprint.

Equipped with a powerful heat exchanger, the BBU 15 HE maximizes heat transfer, ensuring that households receive optimum warmth and hot water. With an output capacity of 15 kW, it can effectively heat a variety of living spaces while providing hot water on demand, making it a practical choice for families.

The boiler incorporates a number of advanced technologies that enhance its performance. One such feature is the built-in frost protection, which helps prevent the system from freezing during colder months. Additionally, the BBU 15 HE is designed for easy maintenance, featuring a simple access point for servicing, which can prolong the boiler’s lifespan and improve overall efficiency.

Safety is a top priority in any boiler installation, and the Baxi Potterton BBU 15 HE includes multiple safety features such as a pre-set temperature limit that prevents overheating and a pressure relief valve to manage excessive pressure within the system. These elements contribute to a safer home environment, providing peace of mind for homeowners.

Furthermore, the boiler is designed to operate quietly, minimizing disruptions in the home when heating systems are active. This is an important factor for many households where comfort is a priority.

In summary, the Baxi Potterton BBU 15 HE is a compact, efficient, and reliable boiler that provides an optimal solution for home heating and hot water needs. Its advanced features, safety systems, and user-friendly design make it a popular choice among homeowners, ensuring a cozy and comfortable living environment. Whether for a new installation or a replacement unit, this boiler stands out as a highly effective option in the market.
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