Baxi Potterton 30 HE manual Making The Electrical Connections, Preliminary Electrical Checks

Page 31

10.0 Installation

Control Box Cover

Fig. 41

Fig. 40

Fig. 42

Facia Panel

Cable Clamp

 

10.8Making The Electrical Connections

To connect the mains input cable proceed as follows:-

1.

Slacken the facia securing screws and lift the

outercase panel so that its locating tabs are clear of the

facia. Remove the panel.

2.

Completely undo the screws securing the facia panel

and hinge it down (Fig. 40).

3.

Remove the control box cover securing screws.

Disengage the barbs on the control box from the

cover. Remove the cover (Fig. 41).

4.

Slacken the cable clamp on the LH side of the boiler

chassis (Fig. 42). 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

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. 43

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.

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 must be connected to the external control. The

switched output from the external control must be

connected to terminal 2 (Fig. 43).

NOTE: If the room thermostat being used incorporates an anticipator it MUST be wired as shown in Fig. 43

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

External

 

L

Controls

 

230 V

br

b

bk

bk

br

Selector /

Reset Switch

b

r

 

br

 

br

 

b

 

b

 

r

 

r

 

g

 

g

PCB

bk

 

 

bk

 

b

Pump

b N

bk

b Pressure Switch br

Fan

b

N

Flue Thermostat

Safety Overheat Thermostat

Central Heating

NTC Sensor

DHW

NTC Sensor

Gas Valve Modulator

Spark Electrode

clamp(s) on the boiler chassis.

9. If the 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.

10.9

Preliminary Electrical Checks

1. Prior to commissioning the boiler preliminary

Key to Wiring b - blue

br - brown bk - black r - red

g - green

Fig. 44

br

bk

r

r

g

g

Gas Valve

Condensate Trap

Flame Sensing Electrode

Hydraulic Differential Pressure Switch

DHW Flow Priority Microswitch

electrical system checks should be carried out.

2. These should be performed using a suitable meter,

and include checks for Ground Continuity,

Resistance to Ground, Short Circuit and Polarity.

© Baxi Heating UK Ltd 2007

31

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Contents Installation & Service Instructions Contents Scheme Members only Installer Notification GuidelinesLegislation Important Installation, Commissioning, Service & RepairCodes of Practice, most recent version should be used Technique Safe Manual HandlingGeneral PreparationCase Front Panel Control Box Data Badge IntroductionDescription Optional ExtrasLayout General Layout1211 30 31 32 Appliance Operation Central Heating Mode FigDomestic Hot Water Mode Fig Frost Protection ModePerforma 30 HE Technical DataDimensions and Fixings Bypass System DetailsInformation Central Heating CircuitPressure Relief Valve Fig System Filling and PressurisingShowers Domestic Hot Water Circuit FigHard Water Areas Location Site RequirementsClearances Figs Gas Supply Ventilation of CompartmentsElectrical Supply Condensate Drain External termination via internalOr Door Plume Displacement KitFlue Built-in element such as a window frame. See BS 5440 PtThis bend is equivalent to 1 metre Flue OptionsHorizontal Flues Horizontal Flue Systems1m extension 45bend 25m 91.5bend Vertical Flues Twin PipeTwin & Vertical Flue Systems Metre for each 91.5 elbow Metre for each 45 elbowKey Accessory Size Flue Accessories5111079 Air duct adaptor Flue Duct AdaptorFor Twin Flue Systems fit the adaptors as follows Terminal Guard Fig Flue DimensionsFor Roof Terminals Flue TrimRing Bracket Metres 60Ø Exhaust Flue Pipe 60Ø Support Plume DisplacementPlume Displacement Kit b Elbow/Plume Outlet AssemblyDetermining Permissible Lengths Screw 30mmGeneral Fitting Notes Min metres Flue Trim SpigotPlume Outlet Elbow Preparing The Boiler InstallationInitial Preparation FlushingRemove the sealing caps from the boiler connections Fitting The BoilerCondensate Drain see section Pressure Relief Valve Discharge Pipe Wall PlateWall Thickness Flue Elbow Adaptor Fitting The FlueVertical Flue WasteY Flue Inner Flue Support Bracket Flue ElbowPreliminary Electrical Checks Making The Electrical ConnectionsCommissioning the Boiler Commissioning the BoilerPressure Test Point Sealing Screw Checking the Burner PressureCompletion CompletionCase Front Panel Facia Panel 13 .1 Annual Servicing Servicing the BoilerAnnual Servicing Changing Components Pressure Switch FigFan Figs Heat Exchanger Fig 14.0 Changing ComponentsBurner Fig Reassemble in reverse order Injectors FigElectrodes Fig Insulation FigGas Valve Fig Central Heating Temperature Sensor FigSafety Thermostat Fig DHW Temperature Sensor FigPump Complete Fig Pump Head Only FigAutomatic Air Vent Fig Expansion Vessel Fig Pressure Gauge FigsCondensate Trap Fig 14.19 P.C.B. Fig Selector Switch FigPlate Heat Exchanger Fig Flow Regulator Figs Diverter Valve AssemblyFlue Overheat Thermostat Fig Secondary Heat Exchanger FigControl PCB Illustrated Wiring DiagramFault Finding Turn selector to neon illuminated Microswitch terminalsDiverter valve spindle Assembly faulty Domestic Hot Water Follow operational sequenceAcross terminals 5 Replace microswitch Check wiring PCB A4 connector Replace selector Terminals 4Replace pump PCB A4 connector terminals 3 Replace PCB PCB A2 connector, isGas at burner PCB A1 connector has 230V ACTurn selector switch To ‘Reset’ positionON/OFF/RESET selector when turned to ‘Reset’ position 154 Short Parts ListShort Parts List 131GAS 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.

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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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