Baxi Potterton 30 HE Gas Valve Fig, Central Heating Temperature Sensor Fig, Safety Thermostat Fig

Page 40

Modulator

Wires

Ignition

Lead

Electrical Plug

Earth Wire

Inlet Pipe

Gas Feed

Pipe

Fig. 68

Flow Pipe

Central Heating

Temperature Sensor

Safety Thermostat

Fig. 69

Fig. 70

40© Baxi Heating UK Ltd 2007

Gas Valve

Plate Heat

Exchanger

DHW Temperature

Sensor

14.0Changing Components

14.8Gas Valve (Fig. 68)

1.Undo the nut on the gas feed pipe under the boiler.

2.Completely undo the securing screws and hinge the facia panel down.

3.Disconnect the wires from the valve modulator and the ignition lead from the spark generator. Disconnect the pressure sensing pipe from the valve. Undo the screw securing the spark generator electrical plug to the valve and disconnect the plug.

4.Pull the earth wire off the spade terminal on the valve.

5.Remove the screws securing the inlet pipe flange to the boiler bottom panel and those securing the outlet manifold to the burner manifold.

6.Remove the valve from the boiler.

7.Note the orientation of the inlet pipe and outlet manifold. Undo the securing screws and remove the pipe and manifold.

8.Examine the ‘O’ ring seals for damage, replacing as necessary.

9.Fit the inlet pipe and outlet manifold to the new valve, ensuring that the ‘O’ ring seals are in place.

10.Reassemble in reverse order and check the burner pressure (Section 11.2).

14.9Central Heating Temperature Sensor (Fig. 69)

1.Ease the retaining tab on the sensor away and disconnect the electrical plug.

2.Unscrew the sensor from it’s pocket and reassemble in reverse order. The plug will only fit one way.

14.10Safety Thermostat (Fig. 69)

1.Pull the electrical connections off the thermostat.

2.Remove the screws securing the thermostat to the mounting plate on the flow pipe.

3.Reassemble in reverse order. The thermostat is not polarised - either wire can fit either terminal on the thermostat.

14.11DHW Temperature Sensor (Fig. 70)

1.Turn off the mains water supply and draw off the residual domestic hot water.

2.Ease the retaining tab on the sensor away and disconnect the electrical plug.

3.Unscrew the sensor from the plate heat exchanger manifold. Examine the sealing washer,replacing if necessary.

4.Reassemble in reverse order. The plug will only fit one way.

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Contents Installation & Service Instructions Contents Installer Notification Guidelines Scheme Members onlyLegislation Important Installation, Commissioning, Service & RepairCodes of Practice, most recent version should be used Safe Manual Handling GeneralPreparation TechniqueIntroduction DescriptionOptional Extras Case Front Panel Control Box Data BadgeLayout General Layout1211 30 31 32 Central Heating Mode Fig Domestic Hot Water Mode FigFrost Protection Mode Appliance OperationTechnical Data Performa 30 HEDimensions and Fixings System Details InformationCentral Heating Circuit BypassSystem Filling and Pressurising Pressure Relief Valve FigShowers Domestic Hot Water Circuit FigHard Water Areas Location Site RequirementsClearances Figs Gas Supply Ventilation of CompartmentsElectrical Supply External termination via internal Condensate DrainPlume Displacement Kit FlueBuilt-in element such as a window frame. See BS 5440 Pt Or DoorFlue Options Horizontal FluesHorizontal Flue Systems This bend is equivalent to 1 metreVertical Flues Twin Pipe Twin & Vertical Flue SystemsMetre for each 91.5 elbow Metre for each 45 elbow 1m extension 45bend 25m 91.5bendKey Accessory Size Flue Accessories5111079 Air duct adaptor Flue Duct AdaptorFor Twin Flue Systems fit the adaptors as follows Flue Dimensions For Roof TerminalsFlue Trim Terminal Guard FigPlume Displacement Plume Displacement Kit bElbow/Plume Outlet Assembly Ring Bracket Metres 60Ø Exhaust Flue Pipe 60Ø SupportDetermining Permissible Lengths 30mm General Fitting NotesMin metres Flue Trim Spigot ScrewPlume Outlet Elbow Installation Initial PreparationFlushing Preparing The BoilerFitting The Boiler Condensate Drain see sectionPressure Relief Valve Discharge Pipe Wall Plate Remove the sealing caps from the boiler connectionsFitting The Flue Wall Thickness Flue Elbow AdaptorWasteY Flue Inner Flue Support Bracket Flue Elbow Vertical FlueMaking The Electrical Connections Preliminary Electrical ChecksCommissioning the Boiler Commissioning the BoilerChecking the Burner Pressure Pressure Test Point Sealing ScrewCompletion CompletionCase Front Panel Facia Panel Servicing the Boiler 13 .1 Annual ServicingAnnual Servicing Changing Components Pressure Switch FigFan Figs Heat Exchanger Fig 14.0 Changing ComponentsBurner Fig Injectors Fig Electrodes FigInsulation Fig Reassemble in reverse orderCentral Heating Temperature Sensor Fig Safety Thermostat FigDHW Temperature Sensor Fig Gas Valve FigPump Complete Fig Pump Head Only FigAutomatic Air Vent Fig Expansion Vessel Fig Pressure Gauge FigsCondensate Trap Fig Selector Switch Fig 14.19 P.C.B. FigPlate Heat Exchanger Fig Diverter Valve Assembly Flow Regulator FigsSecondary Heat Exchanger Fig Flue Overheat Thermostat FigIllustrated Wiring Diagram Control PCBFault Finding Microswitch terminals Diverter valve spindle Assembly faultyDomestic Hot Water Follow operational sequence Turn selector to neon illuminatedCheck wiring PCB A4 connector Replace selector Terminals 4 Replace pump PCB A4 connector terminals 3 Replace PCBPCB A2 connector, is Across terminals 5 Replace microswitchPCB A1 connector has 230V AC Turn selector switchTo ‘Reset’ position Gas at burnerON/OFF/RESET selector when turned to ‘Reset’ position Short Parts List Short Parts List131 154GAS Boiler Commissioning Checklist Service Interval Record Potterton
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30 HE specifications

The Baxi Potterton 30 HE is a popular choice among homeowners seeking an efficient and reliable boiler solution. Recognized for its compact design and advanced technologies, this boiler is ideal for various residential heating needs.

One of the standout features of the Baxi Potterton 30 HE is its high efficiency rating, which ensures lower energy consumption and reduced utility bills. With an impressive efficiency of up to 90%, this boiler operates at a much higher capacity compared to older models, making it both environmentally friendly and cost-effective. The 30 HE is particularly well-suited for medium to larger homes with a higher demand for hot water.

The Baxi Potterton 30 HE incorporates a range of innovative technologies aimed at enhancing performance and reliability. The automatic modulation function adjusts the boiler's output according to demand, ensuring that it only works as hard as necessary. This not only prolongs the lifespan of the unit but also maximizes comfort levels in the home.

Another feature of the 30 HE is its low noise operation. This boiler has been specifically designed to minimize sound, allowing it to operate quietly in the background without disturbing daily activities. This makes it an ideal choice for homes where noise can be a concern, particularly in open-plan living spaces.

The compact dimensions of the Baxi Potterton 30 HE make it easy to install in various locations, whether it be in a kitchen, utility room, or even a loft space. Its lightweight construction further simplifies the installation process, saving both time and labor costs.

In terms of user-friendliness, the boiler is equipped with an intuitive control panel that allows homeowners to easily adjust settings and monitor performance. This user-centric design ensures that even those who may not be technically inclined can manage their heating requirements with ease.

Safety features are also a priority in the design of the Baxi Potterton 30 HE. It includes built-in safety mechanisms such as frost protection and a burner pressure monitoring system, which work to prevent overheating and ensure optimal operation.

Overall, the Baxi Potterton 30 HE is an efficient, reliable, and user-friendly boiler that meets the heating demands of modern homes. Its blend of advanced technologies, compact size, and focus on safety make it a standout choice for homeowners seeking a high-performance heating solution.
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