Baxi Potterton 24 Eco HE manual Appliance Operation, Central Heating Mode Fig

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3.0APPLIANCE OPERATION

NOTE: All delay timers mentioned in 3.1 and 3.2 are overridden by domestic hot water demand.

3.1Central Heating Mode (Fig. 4)

1.With a demand for heating, the pump circulates water through the primary circuit. At a pre- determined flow rate the central heating flow switch operates, initiating the ignition sequence.

2.The main burner ignites at low rate, then the gas valve 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.

3.2Domestic Hot Water Mode (Fig. 5)

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 DHW flow switch which causes the 3 way valve to change position. This will 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 fitted) will require resetting once the selector switch is turned to either the DHW or CH position.

Central Heating Circuit

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

27

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

3

4

7

 

 

 

 

26

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

6

 

 

25

 

 

 

 

 

 

8

 

 

24

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

23

 

 

 

 

 

9

 

 

 

 

 

 

 

 

 

 

 

 

22

 

 

 

 

 

 

11

 

 

21

 

 

17

 

 

 

 

 

 

 

 

 

 

10

 

 

20

 

18

 

 

 

 

 

 

Fig. 4

16

19

15

14

 

13

12

 

 

 

 

 

 

 

 

 

Key

 

 

 

 

 

 

 

 

1

Primary Heat Exchanger

 

 

14

Gas Inlet

 

2

Burner

 

 

 

 

15

Domestic Hot Water Outlet

3

Ignition Electrode

 

 

 

16

Heating Flow

 

4

Flame Sensing Electrode

 

 

17

Pressure Gauge

 

5

Gas Valve

 

 

 

 

18

Hydraulic Differential Pressure Sensor Microswitch

6

Pump

 

 

 

 

19

Automatic By-Pass

 

7

Automatic Air Vent

 

 

 

20

Hydraulic Differential Pressure Sensor

8

Plate Heat Exchanger

 

 

 

21

Diverter Valve Assembly

9

Flow Sensor with Filter

 

 

 

22

Domestic Hot Water Flow Priority Assembly

10

Pressure Relief Valve

 

 

 

23

Domestic Hot Water Flow Priority Microswitch

11

Boiler Drain Point

 

 

 

24

Temperature Sensor

12

Heating Return

 

 

 

25

Overheat Thermostat

13

Cold Water Inlet On/Off Valve and Filter

26

Expansion Vessel

 

 

 

 

 

 

 

27

Secondary Heat Exchanger

 

 

 

 

 

 

 

 

1

 

Domestic Hot Water Circuit

27

2

3 4

7

26

56

25

 

 

24

 

 

 

8

 

 

 

 

 

 

 

23

 

 

 

9

 

 

 

 

 

 

 

 

22

 

 

 

 

11

 

21

 

17

 

 

 

 

 

 

10

 

 

20

 

 

 

 

Fig. 5

16

18

15

14

13

12

 

 

19

 

 

 

 

Publication No. 5111811

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Contents Performa Contents Scheme Members only Installer Notification GuidelinesLegislation Important Installation, Commissioning, Service & RepairDescription IntroductionOptional Extras Layout General LayoutCentral Heating Circuit Key Central Heating Mode FigDomestic Hot Water Mode Fig Appliance OperationTechnical Data Left Hand Side 130mm Boiler Dimensions and FixingsGas Inlet 68mm 95mm 65mmBypass System DetailsInformation Central Heating CircuitExpansion Vessel Central Heating only System Filling and PressurisingPressure Relief Valve Fig Showers Domestic Hot Water CircuitHard Water Areas Location Site RequirementsGas Supply Ventilation of CompartmentsElectrical Supply Condensate Drain Likely flue positions requiring Flue terminal guard FlueMaximum permissible flue length is 4 metres Flue DimensionsFlue Trim Terminal Guard FigFlue Options Horizontal Flues Vertical Twin PipePreparing The Boiler InstallationInitial Preparation FlushingFitting the Pressure Relief Discharge Pipe Fig Fitting The BoilerFitting The Flue Condensate Drain see sectionVertical Flue Preliminary Electrical Checks Functional Flow DiagramKey to Wiring Making The Electrical ConnectionsCommissioning the Boiler CommissioningChecking the Burner Pressure Adjusting the Pressure FigCompletion Completion11 .1 Annual Servicing Servicing the BoilerW. Filters Fig Annual ServicingInlet / Return Manifold Changing Components Pressure Switch FigBurner Fig Heat Exchanger FigElectrodes Fig Injectors FigInsulation Fig Safety Thermostat Fig Temperature Sensor FigGas Valve Fig Pump Complete Figs Pump Head Only FigsAutomatic Air Vent Fig Expansion Vessel Fig Pressure Gauge FigsCondensate Trap Fig 12.18 P.C.B. Fig Selector Switch FigDHW Pressure Differential Valve Fig Diverter Valve Assembly FigPlate Heat Exchanger Fig SealsCH Pressure Differential Valve Fig Diverter Valve AssemblyCH Pressure Microswitch Fig Flow Regulator FigsFlue Overheat Thermostat Fig Secondary Heat Exchanger FigElectrical Illustrated Wiring DiagramControl PCB Short Parts List Short Parts ListCarry out initial fault finding checks Fault FindingOperation sequence Correct Operation sequence Fault Finding Solutions Sections a to E Fault Finding PCB GAS Boiler Commissioning Checklist Service 7 Date Service 1 DateService 3 Date Service 5 DateLiterature Request GB Service GBGeneral Enquiries GB Technical GB

24 Eco HE specifications

The Baxi Potterton 24 Eco HE is a highly efficient and reliable boiler designed to meet the heating and hot water needs of modern homes. This wall-mounted combination boiler is particularly suited for smaller properties, providing a compact solution without compromising on performance.

One of the standout features of the Baxi Potterton 24 Eco HE is its high efficiency rating. It boasts an impressive ErP A-rating for both heating and hot water, which indicates that it is designed to minimize energy consumption and reduce utility bills. The condensing technology employed in this boiler recovers heat from flue gases that would otherwise be lost, optimizing the overall energy use and enhancing its eco-friendly credentials.

The Baxi Potterton 24 Eco HE also incorporates an intelligent control system, allowing homeowners to manage their heating settings more effectively. The built-in digital display is user-friendly, providing easy access to information such as system pressure and temperature settings. This feature facilitates easy programming of heating schedules, helping to ensure comfort while optimizing energy use.

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Furthermore, the compact design of the Baxi Potterton 24 Eco HE allows for flexible installation options. Its reduced size means it can fit easily in kitchen cupboards or other confined spaces, making it ideal for homes where space is at a premium.

The boiler is equipped with a low-energy pump and a built-in frost protection feature, ensuring reliable operation even in colder climates. Additionally, its quiet operation contributes to a more comfortable living environment.

In summary, the Baxi Potterton 24 Eco HE is an efficient, compact, and powerful boiler that caters to the demands of modern living. With features such as high efficiency, intelligent controls, impressive hot water delivery, and flexible installation options, it stands out as a top choice for homeowners seeking a dependable and eco-friendly heating solution. This boiler is a testament to Baxi's commitment to delivering quality and innovation in the heating sector.
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