Baxi Potterton Gold FSB 30 HE manual Servicing the Boiler, Annual Servicing

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14.0Servicing the Boiler

14.1Annual Servicing

WARNING: The PCB Control and Fan Assembly are 325 Vdc. Isolate system controls before access.

IMPORTANT: When servicing ensure that both the gas and electrical supplies, including Switched and Permanent Live to the boiler are isolated before any work is started.

The four LEDs on the facia will all be OFF.

It is important to isolate the electrical supply at the system isolation switch as it is not possible to do this on the boiler itself.

Hazardous materials are not used in the construction of this product, however reasonable care during service is recommended - see Section 1.2.

When replacing the combustion box door after servicing it is essential that the retaining screws are tightened fully.

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.

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 complete flue system and the flue seals.

•The integrity of the boiler combustion circuit and relevant seals as described in Section 14.2.

•The operational gas inlet pressure as described in Section 12.2.1 to 12.2.3 and the gas rate as described in 12.2.4.

•The combustion performance as described in ‘Check the Combustion Performance’ (14.1.4 to 14.1.6 below).

3.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.

•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 (CO/CO2 ratio)

4.Set the boiler to operate at maximum rate as described in Section 12.2.

5.Remove the cap from the flue sampling point, insert the analyser probe and obtain the CO/CO2 ratio. This must be less than 0.004.

6.If the combustion reading (CO/CO2 ratio) is greater than this, and the integrity of the complete flue system and combustion circuit seals has been verified, and the inlet gas pressure and gas rate are satisfactory either:

• Perform the ‘Annual Servicing - Inspection’ (Section 14.2) & re-check.

• Replace the gas valve (Section 15.8) & re-check.

© Baxi Heating UK Ltd 2011

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Contents FSB 30 HE Potterton Gold FSB 30 HE No 592 Natural GasScheme Members only Installer Notification GuidelinesCodes of Practice, most recent version should be used Important Installation, Commissioning, Service & RepairGas Safety Installation & Use Regulations LegislationContents Introduction DescriptionImportant Information Layout Figs , 4, 5 Flow Temperature Thermistor RedPosition of Optional Integral Timer Wiring General LayoutBoiler Operation Boiler OperationAll TRVs Shut Down ? Minute Anti-cycle Technical Data CAT I 2HIpxx Dimensions and Fixings System Details Water Circulating SystemsTreatment of Water Circulating Systems Low Head Installation PipeworkAir Vents System Controls & Wiring Sealed Systems Fig Site Requirements LocationCompartment 5mm Min 500mm Min For Servicing Purposes 390mm Clearances Figs &16Gas Supply Electrical SupplyCondensate Disposal Condensate Drain GeneralBlockage or restriction of the pipe into the drain Site RequirementSink ± 10 from verticalMIN FlueThis bend is equivalent to 0.5 metre Flue OptionsHorizontal Flue System Examples Horizontal Flue Systems17.2 + 34.4 = 51.6 metres Vertical Flue System Examples Twin PipeTwin & Vertical Flue Systems Total equivalent lengthFlue Group P Flue AccessoriesCDS Flue Group BFor Vertical Flues For Vertical Flue Systems For Twin Flue SystemsFor Twin Flues Flue Deflector a Flue DimensionsFor Roof Terminals Terminal Guard FigPlume Displacement Kit P.D.K Plume DisplacementDetermining Permissible Lengths P.D.K General Fitting Notes P.D.K Min metres Min .3 metresThis section of the flue Must be horizontal Fig. H Installation Flue Inner Flue Support Bracket Fitting the Standard FluePoints Inner Flue Support Bracket Flue Elbow Gasket Flue TrimConnection Making the Condensate DrainMaking The Electrical Connections Cable Clamp Way Terminal BlockIntegral Programmer Fuse 3.15 AT Schematic Wiring DiagramElectrical Green/YellowPCB Illustrated Wiring DiagramCommissioning the Boiler Commissioning the BoilerPriming the Condensate Pump Check the Operational Working Gas Inlet Pressure Handover 13.2 ‘Benchmark’ ChecklistCompletion Fitting The Case Panels & FaciaAnnual Servicing Servicing the BoilerInsulation Annual Servicing InspectionAir Box Door Panel Spark Sleeve Earth Combustion Box Door PanelTo it Fig Pipe may be removed to increase accessCracks/damage. Clean with a soft brush Lock Nut Service Drain Plug Central Insulation PanelFlow Temperature Thermistor and Safety Thermostat Fig Changing ComponentsChanging Components & Preparation Check operation of the pump See Section Condensate Pump Complete aClip Drain the boiler see .1 paragraph 2Changing Components Spark and Sensing Electrodes Fig Securing Nut Sensor Leads Condensate Trap Lock Nut Injector Pipe FigGas Valve Fig Condensate Trap FigHeat Exchanger Manifold Assembly Heat ExchangerCombustion Box Door Panel Burner Support Bracket Burner Securing Screws Short Parts List Short Parts ListKey Description Fault Finding 240V at D ? 240V at a ?240V at B ? 240V at C ?Pump running ? Wires from inline Connector to PCB faultyViewed from Wire Entry end Replace Flow Switch System full of water ?Is there Gas at gas valve inlet ? Wiring from PCBRectify wiring Replace PCB Way Connector Lead from PCB to Gas Valve faultyLights On Off Replace Stat Replace fan Lights Rectify wiring Viewed from Wire Entry end ‘C’ ‘D’ ‘B’ ‘A’YES Condensing Boilers only Service Record Brooks House, Coventry Road, Warwick. CV34 4LL Comp No 6/11 Potterton

Gold FSB 30 HE specifications

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