Baxi Potterton Condensing Combination Boiler manual Appliance Operation, Central Heating Mode Fig

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Central Heating Circuit

26

25

18 24 22

21

16

Fig. 2

1

 

 

2

 

3

4

 

 

7

20

5

6

 

 

 

8

 

 

9

 

23

11

 

 

 

 

10

 

 

17

15 14 13 12

3.0Appliance Operation

3.1Central Heating Mode (Fig. 2)

1.With a demand for heating, the pump circulates water through the primary circuit.

2.Once main burner ignites the fan speed controls the gas rate to maintain the heating temperature measured by the temperature sensor.

3.When the flow temperature exceeds the setting temperature, a 3 minute delay occurs before the burner relights automatically (anti-cycling). The pump continues to run during this period.

4.When the demand is satisfied the burner is extinguished and the pump continues to run for a period of 3 minutes (Pump Overrun).

3.2Domestic Hot Water Mode (Fig. 3)

1.

Priority is given to the domestic hot water supply. A

demand at a tap or shower will override any central heating

requirement.

2.

The flow of water will operate the Hall Effect Sensor

which requests the 3 way valve to change position. This will

Key

1

Primary Heat Exchanger

15 Domestic Hot Water Outlet

2

Burner

16

Heating Flow

3

Ignition Electrodes

17

Pressure Gauge

4

Flame Sensing Electrode

18

Water Pressure Sensor

5

Gas Valve

20

Fan

6

Pump

21

Diverter Valve Assembly

7

Automatic Air Vent

22

Diverter Valve Motor

8

Plate Heat Exchanger/Automatic By-pass

23 Domestic Hot Water Flow Temperature Sensor

9

Flow Sensor with Filter & Regulator

24

Safety Thermostat

10

Pressure Relief Valve

25 Central Heating Temperature Sensor

11

Boiler Drain Point

26

Expansion Vessel

12

Heating Return

 

 

13

Cold Water Inlet On/Off Valve and Filter

 

 

14

Gas Inlet

 

 

allow the pump to circulate the primary water through the

DHW plate heat exchanger.

3. The burner will light automatically and the temperature of

the domestic hot water is controlled by the temperature

sensor.

4. When the domestic hot water demand ceases the burner

will extinguish and the diverter valve will remain in the

domestic hot water mode, unless there is a demand for

central heating.

IMPORTANT: When the selector switch is in the ‘0’ (Off) position the electrical supply to the boiler is isolated. The boiler will not operate and the integral timer (if

Domestic Hot Water Circuit

 

 

26

3

4

 

 

 

 

 

 

20

5

 

 

 

 

 

 

 

25

 

 

18

 

24

 

 

 

 

 

 

 

 

22

 

9

 

 

 

 

 

21

 

23

 

 

 

 

 

1

2

7

6

8

11

10

17

fitted) will require resetting once the selector switch is set to either Position () or Position ().

3.3Frost Protection Mode

1.The frost protection mode is integral to the appliance and functions only with the selector switch (see Section 2.1) in the domestic hot water and central heating position. If the system temperature falls below 5° C then the boiler will fire on its minimum setting until a flow temperature of 30° C is reached. Further protection can be incorporated by using a system frost thermostat.

3.4Pump Protection

1.With the selector switch (see Section 2.1) in either the central heating or central heating and domestic hot water position, the pump will automatically operate for 1 minute in every 24 hours to prevent sticking.

16

15

14

13

12

Fig. 3

© Baxi Heating UK Ltd 2012

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Contents Installation & Service Instructions 0086 Scheme Members only Installer Notification GuidelinesImportant Installation, Commissioning, Service & Repair LegislationCodes of Practice refer to the most recent version General Safe Manual HandlingPreparation TechniqueContents Introduction Contents of PackDescription Optional ExtrasLayout General LayoutDomestic Hot Water Mode Fig Central Heating Mode FigFrost Protection Mode Appliance OperationHeatmax Combi 24, 28 Technical DataDimensions and Fixings Information System DetailsCentral Heating Circuit BypassSafety Pressure Relief Valve Fig System Filling and PressurisingExpansion Vessel Central Heating only Domestic Hot Water Circuit Fig ShowersHard Water Areas Site Requirements LocationClearances Figs Ventilation of Compartments Site RequirementGas Supply Electrical SupplyCondensate Drain 500mm min 50mm perMinimum fall RunFlue Plume Displacement KitBelow windows or openings on pitched roofs 2000 Likely flue positions requiring a flue terminal guardHorizontal Flues Flue OptionsHorizontal Flue Systems This bend is equivalent to 1 metreVertical Flue Systems Vertical FluesRoof Terminal This bend is equivalent to 1 metre Metre for each 91.5 bend Metre for each 135 bendKey Accessory Size Code No Flue AccessoriesFor Roof Terminals Flue DimensionsFlue Trim Terminal Guard FigPlume Displacement Kit Fig Plume DisplacementDetermining Permissible Lengths 28/33Example 512136830mm General Fitting Notes60Ø extension piece. It must be secured using two Elbow to allow the flue to be installed as shownUsing a suitable bit e.g mm, drill through Extension and outlet. Secure using two of the screwsUnpacking & Initial Preparation InstallationFlushing After considering the site requirementsCondensate Drain see section Fitting The BoilerWall Thickness Flue Elbow Fitting The FlueEnsure Elbow is fully engaged into Boiler Adaptor WasteY FlueInner Flue Support Bracket 25mm Extension Cut EndEnsure Extension is fully engaged into Boiler Adaptor Making The Electrical Connections Preliminary Electrical ChecksTerminal Block Cover Cable Clamp Commissioning the Boiler CommissioningSelector Switch Display Check the Operational Working Gas Inlet PressureGas Valve Completion CompletionCase Front Panel Facia Panel Servicing Annual ServicingAnnual Servicing Inspection Fan, Collector and Cover Assembly Threaded Bush Electrode Leads Venturi InjectorRestricter Filter Hall Effect Sensor Changing Components Igniter FigSpark and Sensing Electrodes Fig Venturi Fig Fan FigInjector Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan CollectorInsulation Fig Burner FigSafety Thermostat Fig Central Heating Temperature Sensor NTC FigDHW Temperature Sensor NTC Fig Flue/Heat Exchanger Thermostat Sensor FigPump Head Only Fig Pump Complete FigAutomatic Air Vent Fig Hall Effect Sensor Fig Pressure Gauge FigsPlate Heat Exchanger Fig Diverter Valve Motor Unit & Assembly Fig14.22 P.C.B. Fig Selector Switch FigExpansion Vessel Fig Gas Valve FigSetting the Gas Valve CO2 check Setting the Gas ValveElectrical Illustrated Wiring DiagramShort Parts List Short Parts List306 302Fault Finding Initial Fault Finding ChecksError Codes Go to section ‘A’ Turn the selector switch to Error 133 flashingReset position for 5 seconds Pump runsTurn Domestic Hot Water Error 133 flashing Go to section ‘I’Open DHW tap fully Close DHW tapSwitch terminal PCB X3 connector terminals 3Fan jammed or faulty winding Replace PCB Replace waterGas at burner Replace sensor or PCB E28Replace gas valve Terminals 1Replace safety thermostat Replace PCB Is there 230V atReplace sensor Page GAS Boiler System Commissioning Checklist Service Record Brooks House, Coventry Road, Warwick. CV34 4LL

Condensing Combination Boiler specifications

The Baxi Potterton Condensing Combination Boiler is a sophisticated heating solution designed to meet the demands of modern households while promoting energy efficiency. This state-of-the-art boiler combines both heating and hot water capabilities into a compact unit, making it an ideal choice for homes with limited space.

One of the standout features of the Baxi Potterton Condensing Combination Boiler is its impressive energy efficiency. With a high energy efficiency rating, these boilers can significantly reduce energy bills and minimize carbon footprints. The condensing technology maximizes heat recovery, allowing the boiler to utilize heat that would otherwise be lost in traditional systems. By extracting more energy from the combustion process, homeowners can enjoy reliable heating and hot water without the typical energy waste associated with older boilers.

The Baxi Potterton range is engineered for easy installation and maintenance, featuring a lightweight design that simplifies the fitting process. The built-in digital control system allows homeowners to easily adjust settings for optimal comfort and energy usage. Additionally, the boiler includes a frost protection feature, making it a reliable option for homes in colder climates.

Another key characteristic of the Baxi Potterton Condensing Combination Boiler is its powerful hot water delivery system. The combination boiler provides instant hot water on demand, eliminating the need for a separate water tank. This ensures that households have a constant supply of hot water for showers, cooking, and other domestic needs, without long wait times.

Safety is a top priority with the Baxi Potterton. The boiler is equipped with multiple safety features, including pressure relief valves and safety cut-off systems, ensuring peace of mind for homeowners. The compact design further includes a quiet operation feature, which is particularly beneficial for households where noise levels need to be kept to a minimum.

In summary, the Baxi Potterton Condensing Combination Boiler is a highly efficient, compact, and user-friendly solution for home heating and hot water needs. With its advanced technology and strong emphasis on safety, it stands out as a reliable choice for modern households looking to improve energy efficiency while maintaining comfort. Whether you are replacing an old boiler or installing a new system, the Baxi Potterton offers a perfect blend of practicality and innovation.
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