Baxi Potterton 24 Eco HE manual Making The Electrical Connections, Preliminary Electrical Checks

Page 23

8.0INSTALLATION

8.8Making The Electrical Connections

To connect the mains input cable proceed as follows:-

1.

Slacken the facia panel securing screws and lift the

outercase panel so that its securing tabs are clear of

the facia. Remove the panel.

2.

Completely undo the screws securing the facia

panel and hinge it down (Fig. 29).

3.

Remove the control box cover securing screws.

Disengage the barbs on the control box from the

cover. Remove the cover (Fig. 30).

4.

Slacken the cable clamp on the LH side of the

boiler chassis (Fig. 31). Insert the cable through the

clamp and route it to the terminal block.

5.

Slacken the screws in the terminal block, connect

the input cable, and tighten the screws.

6.

If an external control is to be connected it can be

done at this point. Run the input cable from the

Fig. 30

Control Box Cover

Fig. 29

Fig. 31

Facia Panel

Cable Clamp

 

external control through the second cable clamp on

the boiler chassis. Refer to the instructions supplied

with the control.

7. To connect external control(s) remove the link

between terminals 1 & 2. The 230V supply at

terminal 1 can be connected to the external

control as shown. The switched output from the

external control must be connected to terminal 2.

(Figs. 32).

NOTE: If the room thermostat being used incorporates an anticipator it MUST be wired as shown in Fig. 32.

 

Fuse

Fused supply 3A

Always fit fast

230V ~ 50Hz

blow 2A fuse

Live (brown) br

Neutral (blue) b

Earth (green/yellow) g/y

230V 1 bk

2 bk

Terminal Block

Fig. 32

Frost Thermostat

 

 

 

L

br

L

N

b

N

 

 

External Clock

 

g/y

 

1

bk

 

230 V

 

N

2

bk

 

 

SL

 

Room Thermostat

 

 

IMPORTANT: If an integral timer is fitted to the boiler an external frost thermostat wired as shown will not operate correctly. Only external timers may be used in such installations, as in the diagram.

IMPORTANT: The external control MUST be suitable for 230V switching.

Functional Flow Diagram

8.Ensure that both mains input and, where fitted,

external control input cables have sufficient slack to allow the control box to drop down. Tighten the cable clamp(s) on the boiler chassis.

9.If an optional integral timer is to be used it should be fitted at this point. Refer to the instructions supplied with the timer. NOTE: An external frost thermostat cannot be used with the integral timer.

External Controls

L

230 V

br

b

bk

bk

br

Selector /

Reset Switch

b

r

 

br

 

br

 

b

 

b

 

r

 

r

PCB

bk

 

 

Pump

 

 

 

 

 

 

 

 

 

 

 

 

N

 

 

 

 

 

 

b

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pressure Switch

 

 

 

 

 

 

b

 

 

br

 

 

 

 

 

 

 

 

 

 

Fan

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N

 

 

 

 

 

 

b

 

 

Flue Thermostat

Safety Overheat Thermostat

NTC Sensor

8.9

Preliminary Electrical Checks

 

Key to Wiring

 

 

 

b

- blue

1. Prior to commissioning the boiler preliminary

 

br - brown

electrical system checks should be carried out.

 

bk - black

 

 

Fig. 33

r

- red

 

 

g

- green

2. These should be performed using a suitable meter,

 

 

w

- white

and include checks for Ground Continuity,

 

 

 

 

Resistance to Ground, Short Circuit and Polarity.

bk

b

br

bk

r

r

g

g

Gas Valve Modulator

Spark Electrode

Gas Valve

Condensate Trap

Flame Sensing Electrode

Hydraulic Differential Pressure Switch

DHW Flow Priority Microswitch

Publication No. 5111811

23

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Contents Performa Contents Scheme Members only Installer Notification GuidelinesLegislation Important Installation, Commissioning, Service & RepairOptional Extras IntroductionDescription 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 CircuitPressure Relief Valve Fig System Filling and PressurisingExpansion Vessel Central Heating only Hard Water Areas Domestic Hot Water CircuitShowers Location Site RequirementsElectrical Supply Ventilation of CompartmentsGas 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 BoilerInlet / Return Manifold Annual ServicingW. Filters Fig Changing Components Pressure Switch FigBurner Fig Heat Exchanger FigInsulation Fig Injectors FigElectrodes Fig Gas Valve Fig Temperature Sensor FigSafety Thermostat Fig Automatic Air Vent Fig Pump Head Only FigsPump Complete Figs Condensate Trap Fig Pressure Gauge FigsExpansion Vessel 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 FigControl PCB Illustrated Wiring DiagramElectrical Short Parts List Short Parts ListOperation sequence Correct Fault FindingCarry out initial fault finding checks 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.

Another characteristic of the Baxi Potterton 24 Eco HE is its impressive hot water output. With a hot water flow rate of up to 10.2 liters per minute, it ensures that showers and taps can be used simultaneously without running out of hot water. This makes it an excellent choice for families or households where demand for hot water is high.

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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