Baxi Megaflo 2 System 32 Compact GA Manual de Serviço

© Baxie Heating UK Ltd 2012Megaflo 2 System Compact GARangeGas Fired Wall Mounted Condensing System BoilerInstallation & Servicing InstructionsThe

104.0 Technical Data© Baxi Heating UK Ltd 20120200 400 600 800 1000 12000.511.522.533.54Metre (wg)Flow Rate (l/h)Pump - Available Head055.564.54.1 (

115.0 Dimensions and Fixings© Baxi Heating UK Ltd 2012360° Orientation Flue Ø 100mmDCBAEGFAt least 1.5°HJHeatingFlow(22mm)GasInlet(22mm)HeatingReturn(

126.0 System Details© Baxi Heating UK Ltd 20126.1 Treatment of Water Circulating Systems1. All recirculatory water systems will be subject to corrosio

136.0 System Details© Baxi Heating UK Ltd 2012Fig. 4Fig. 6StopValveDoubleCheckValveDHWMainsInletCHReturnTemporaryLoopPressure Relief ValveDischarge Pi

147.0 Site Requirements© Baxi Heating UK Ltd 20127.1 Location1. The boiler may be fitted to any suitable wall with the fluepassing through an outside

157.0 Site Requirement© Baxi Heating UK Ltd 20127.4 Gas Supply1. The gas installation should be in accordance with therelevant standards. In GB this i

167.0 Site Requirements© Baxi Heating UK Ltd 20127.7 Condensate DrainFAILURE TO INSTALL THE CONDENSATEDISCHARGE PIPEWORK CORRECTLY WILL AFFECTTHE RELI

177.0 Site Requirement© Baxi Heating UK Ltd 20127.7 Condensate Drain (cont.)11. When discharging condensate into a soil stack or wastepipe the effects

187.0 Site Requirement© Baxi Heating UK Ltd 20127.7 Condensate Drain (cont.)12. A boiler discharge pump is available, ‘MULTIFIT’ part no. 720648301. T

197.0 Site Requirements© Baxi Heating UK Ltd 20127.8 FlueNOTE: Due to the nature of the boiler a plume of watervapour will be discharged from the flue

2© Baxi Heating UK Ltd 2012Model RangeBaxi Megaflo 2 System 12 Compact GAG.C.No 41-075-70Baxi Megaflo 2 System 15 Compact GAG.C.No 41-075-71Baxi Megaf

208.0 Flue© Baxi Heating UK Ltd 2012HorizontalFlues(ii)(i)Plume Displacement Kit 60 /100 dia1M Extensions 45° & 93° elbowsare also available.NOTE:

218.0 Flue© Baxi Heating UK Ltd 20128.2 Flue LengthsThe standard horizontal telescopic flue kit allows for lengthsbetween 315mm and 500mm from elbow t

229.0 Installation© Baxi Heating UK Ltd 2007Fig. 20130mmFor Side Flue ExitHeating ReturnFlushing TubeFig. 18Fig. 19Fig. 17HeatingFlow(22mm)GasInlet(22

23© Baxi Heating UK Ltd 2012Fig. 22Pressure Relief ValveDischarge PipeFig. 21Suggested Lifting Pointsshown as shaded areaRemove Sealing Caps fromunder

24© Baxi Heating UK Ltd 20129.0 Installation9.6 Fitting The FlueHORIZONTAL TELESCOPIC FLUE1. There are two telescopic sections, the TerminalAssembly a

25© Baxi Heating UK Ltd 20129.0 Installation 9.6 Fitting the Flue (Cont)10. Remove the flue elbow and insert the flue through thehole in the wall.

269.0 Installation© Baxi Heating UK Ltd 2012Fig. 32Fig. 339.7 Making The Electrical Connections1. See Section 7.5 for details of the electrical supply

2711.0 Commissioning© Baxi Heating UK Ltd 201210.0 CommissioningAutomatic AirVentCapFig. 34PumpHeatingPressure Gaugebar01234 Control Boxremoved for cl

2810.0 Commissioning© Baxi Heating UK Ltd 2012Fig. 37Fig. 38Inlet Gas Pressure Test PointDO NOT check gas pressure here1. It may be necessary to adjus

29© Baxi Heating UK Ltd 2012Fig. 39Facia PanelCase Front Panel11.0 Completion & System Draining11.1 Completion1. Replace the case front panel, and

3Installer Notification Guidelines© Baxi Heating UK Ltd 2012Choose BuildingRegulations NotificationRouteContact your relevant LocalAuthority Building

3012.0 Servicing© Baxi Heating UK Ltd 201212.1 Annual Servicing1. For reasons of safety and economy, it is recommended thatthe boiler is serviced annu

3112.0 Servicing© Baxi Heating UK Ltd 201212.2 Annual Servicing Inspection (Cont)5. Remove the clip securing the gas feed pipe to the air/gasventuri.

3213.0 Changing Components© Baxi Heating UK Ltd 2012IMPORTANT: When changing components ensure thatboth the gas and electrical supplies to the boiler

3313.0 Changing Components© Baxi Heating UK Ltd 201213.4 Burner (Fig. 47) 1. Remove the clip securing the gas feed pipe to the air/gasventuri and disc

3413.0 Changing Components© Baxi Heating UK Ltd 201213.6 Flue Sensor (Fig. 49)1. For ease of access on 12 - 28 models remove theExpansion Vessel as de

3513.0 Changing Components© Baxi Heating UK Ltd 2012Socket HeadedScrewPump HeadPump BodyAutomatic AirVentFig. 53Fig. 54Electrical SupplyPlugPump FlowP

3613.0 Changing Components© Baxi Heating UK Ltd 201213.13 Safety Pressure Relief Valve (Fig. 55)1. Close the flow and return isolation taps and drain

3713.0 Changing Components© Baxi Heating UK Ltd 201213.15 P.C.B. & R.D.S. (Removable Data Stick) (Fig. 58)NOTE: Both P.C.B. and R.D.S. are availab

3813.0 Changing Components© Baxi Heating UK Ltd 201213.16 Gas Valve (Fig. 59)IMPORTANT: After replacing the valve the CO2must bechecked and adjusted a

39© Baxi Heating UK Ltd 2012Fig. 61PlugAnalyser Probe14.0 Combustion & Calibration14.1 Checking the Combustion1. Combustion should be:-Natural Gas

4Legislation© Baxi Heating UK Ltd 2012Codes of Practice - refer to the most recent versionIMPORTANT - Installation, Commissioning, Service & Repai

4015.0 Electrical© Baxi Heating UK Ltd 201215.1 Illustrated Wiring DiagramX23 X37 X36X22 X20 X24X10X11X12X13X1X2Flue SensorHeatingReturnSensorHeatingF

4116.0 Short Parts List© Baxi Heating UK Ltd 2012Short Parts ListKey Description ManufacturersNo. No. Part No.A Fan 720768101B Burner (12/15/18/24/28)

4217.0 Fault Finding© Baxi Heating UK Ltd 201217.1 Initial Fault Finding Checks1. Check that gas, water and electrical supplies are availableat the bo

4317.0 Fault Finding© Baxi Heating UK Ltd 2012Refer to “Illustrated Wiring Diagram” for position of terminals and componentsCentral Heating - Follow o

4417.0 Fault Finding© Baxi Heating UK Ltd 2012Fault Finding Solutions SectionsIs there 230V at:Main terminals L and N Check electrical supply1.NOMain

4517.0 Fault Finding© Baxi Heating UK Ltd 2012Replace PCBCheck and correct if necessary1. Ignition electrode and lead2. Electrode connection3. Spark g

46© Baxi Heating UK Ltd 201217.0 Fault FindingITemperature sensors faulty.Cold resistance approximately10kΩ @ 25° C (CH sensor)20kΩ @ 25° C (Flue se

18.0 32 kW Model Supplement© Baxi Heating UK Ltd 2012Outercase DimensionsCasing Height - 763mmOverall Height Inc Flue Elbow - 923mmCasing Width - 450m

4818.0 32 kW Model Supplement© Baxi Heating UK Ltd 2012360° Orientation Flue Ø 100mmDCBAEGFAt least 1.5°HJBoilerSideBoilerSideHeatingFlow(22mm)GasInle

4918.0 32 kW Model Supplement© Baxi Heating UK Ltd 20121NOTE: The main difference between Megaflo 32 kW andother models in the range is the position o

5Safe Manual Handling© Baxi Heating UK Ltd 2012GeneralThe following advice should be adhered to, from when first handling the boiler to the final stag

GAS BOILER SYSTEM COMMISSIONING CHECKLISTThis Commissioning Checklist is to be completed in full by the competent person who commissioned the boiler a

Service RecordIt is recommended that your heating system is serviced regularly and that the appropriate Service Interval Record is completed.Service P

© Baxi Heating UK Ltd 2012BAXI A Trading Division of Baxi Heating UK Ltd (3879156)Brooks House, Coventry Road, Warwick. CV34 4LLAfter Sales Service 08

6© Baxi Heating UK Ltd 2012CONTENTS1.0 Introduction 72.0 General Layout 83.0 Appliance Operation 94.0 Technical Data 105.0 Dimensions and Fixings 116.

71.0 Introduction© Baxi Heating UK Ltd 20121.1 Description1. The Baxi Megaflo 2 System Compact GA Range are fullyautomatic gas fired wall mounted cond

82.0 General Layout© Baxi Heating UK Ltd 20122.1 Layout 12 - 28 Models1. Expansion Vessel2. Expansion Vessel Locating Stud3. Boiler Adaptor4. Primary

93.0 Appliance Operation© Baxi Heating UK Ltd 20123.1 Operating Mode1. With a demand for heating, the pump circulates waterthrough the primary circuit