Baxi Potterton 24 Eco HE manual

2 1 0 4 3 bar Reset Burner On Flame Failure Power On In s tallation & Service In s truction s Performa 24 Eco HE This is a Wall Mounted Powered Flue Condensing Combination Boiler Gas Fired Central Heating Unit. The boiler meets the requirements of Statutory Instrument “ The Boiler (Efficiency) Regulations 1993 N o 3083” and is deemed to mee[...]

Publication No. 5111811 2 Natural Ga s Potterton Performa 24 Eco HE G.C.N o 47 393 11 Building Regulation s and the Benchmark Commi ss ioning Checkli s t Building Regulations (England & Wales) require notification of the installation of a heating appliance to the relevant Local Authority Building Control Department. From 1 April 2005 this can b[...]

3 INST ALLER NOTIFICA TION GUIDELINES Publication No. 5111811 Choose Building Regulations Notification Route Contact your rele v ant Local A uthor ity Building Control (LABC) who will arrange an inspection or contact a gov er nment approv ed inspector LABC will record the data and will issue a cer tificate of compliance CORGI will record the data a[...]

LEGISLA TION 4 Publication No. 5111811 Code s of Practice, most recent version should be used IMPORTANT - Installation, Commissioning, Service & Repair This appliance must be installed in accordance with the manufacturer’s instructions and the regulations in force. Read the instructions fully before installing or using the appliance. In GB, t[...]

5 1.0 INTRODUCTION Publication No. 5111811 1.1 De s cription 1. The Potterton Performa 24 Eco HE is a fully automatic gas fired wall mounted condensing combination boiler. It is room sealed and fan assisted, and will provide central heating and mains fed domestic hot water. 2. The boiler is set to give a maximum output of 25.2 kW (condensing). 3. I[...]

2.0 GENERAL LA YOUT 6 Publication No. 5111811 2.1 Layout 1. Air Pressure Switch 2. Expansion Vessel 3. Burner Manifold 4. Automatic Air Vent 5. DHW Plate Heat Exchanger 6. Circulation Pump 7. Drain Off Point 8. Pressure Relief Valve 9. Optional Integral Timer Position 10. Central Heating System Pressure Gauge 11. Control PCB 12. Control Box 13. 3-W[...]

7 3.0 APPLIANCE OPERA TION Publication No. 5111811 NOTE: All delay timers mentioned in 3.1 and 3.2 are overridden by domestic hot water demand. 3.1 Central 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[...]

4.0 TECHNICAL DA T A 8 Publication No. 5111811 0 200 400 600 800 1000 1200 0.5 1 1.5 2 2.5 3 3.5 4 Metre (wg) Flow Rate (l/h) Pump - Available Head 0 5 4.5 Temperature s C.H. Flow Temp (adjustable) 35°C to 85°C max (± 5°C) D.H.W. Flow Temp 35°C to 65°C max (± 5°C) dependent upon flow rate This value is used in the UK Government’s Standard[...]

9 5.0 DIMENSIONS AND FIXINGS Publication No. 5111811 Dimensions A 780mm B 345mm C 450mm D 116mm Ø Min. E 185mm F 190mm G 131mm 65mm 65mm 65mm 65mm View from under the appliance Ga s Inlet Heating Flow Dome s tic Hot Water Outlet Cold Water Inlet Heating Return 130mm 165.7mm 95mm Left Hand Side of Boiler Fig. 7 360° Orientation Tube Ø 100mm D C B[...]

6.0 SYSTEM DET AILS 10 Publication No. 5111811 6.1 Information 1. The Potterton Performa 24 Eco HE Condensing Combination Boiler is a ‘Water Byelaws Scheme - Approved Product’. To comply with the Water Byelaws your attention is drawn to the following installation requirements and notes (IRN). a) IRN 001 - See text of entry for installation requ[...]

11 6.0 SYSTEM DET AILS Publication No. 5111811 6.5 Sy s tem Filling and Pre ss uri s ing 1. A filling point connection on the central heating return pipework must be provided to facilitate initial filling and pressurising and also any subsequent water loss replacement/refilling. 2. There are connection points on the mains cold water inlet and centr[...]

6.0 SYSTEM DET AILS 12 Publication No. 5111811 6.8 Dome s tic Hot Water Circuit 1. All DHW circuits, connections, fittings, etc. should be fully in accordance with relevant standards and water supply regulations. 2. Your attention is drawn to: for GB: Guidance G17 to G24 and recommendation R17 to R24 of the Water Regulations Guide. for IE: the curr[...]

13 7.0 SITE REQUIREMENTS Publication No. 5111811 7.1 Location 1. The boiler may be fitted to any suitable wall with the flue passing through an outside wall or roof and discharging to atmosphere in a position permitting satisfactory removal of combustion products and providing an adequate air supply. The boiler should be fitted within the building [...]

7.0 SITE REQUIREMENTS 14 Publication No. 5111811 7.3 Ventilation of Compartment s 1. Where the appliance is installed in a cupboard or compartment, no air vents are required. 2. BS 5440: Part 2 refers to room sealed appliances installed in compartments. The appliance will run sufficiently cool without ventilation. 7.4 Ga s Supply 1. The gas install[...]

15 7.0 SITE REQUIREMENTS Publication No. 5111811 7.6 Conden s ate Drain FAILURE TO INSTALL THE CONDENSATE DISCHARGE PIPEWORK CORRECTLY WILL AFFECT THE RELIABLE OPERATION OF THE BOILER The conden s ate di s charge pipe MUST NOT RISE at any point along it s length. There MUST be a fall of AT LEAST 2.5° (50mm per metre) along the entire run. 1. The c[...]

7.0 SITE REQUIREMENTS 16 Publication No. 5111811 7.7 Flue NOTE: Due to the nature of the boiler a plume of water vapour will be discharged from the flue. This should be taken into account when siting the flue terminal. 1. The following guidelines indicate the general requirements for siting balanced flue terminals. For GB recommendations are given [...]

17 7.0 SITE REQUIREMENTS Publication No. 5111811 Fig. 17 Fig. 16 7.8 Flue Dimen s ion s The standard horizontal flue kit allows for flue lengths between 100mm and 685mm from elbow to terminal (Fig. 16). The maximum permi ss ible flue length i s : 4 metre s . 7.9 Flue Trim 1. The rubber flue trim supplied may be fitted to either the outside wall or [...]

7.0 SITE REQUIREMENTS 18 Publication No. 5111811 7.11 Flue Option s 1. The Potterton Performa 24 Eco HE can be fitted with flue systems as illustrated. 2. The standard flue is suitable only for horizontal applications. 3. Maximum permissible equivalent flue lengths are:- Horizontal Concentric 4 metres Vertical Concentric 4 metres Vertical Twin Pipe[...]

19 8.0 INST ALLA TION Publication No. 5111811 8.1 Initial Preparation The ga s s upply, ga s type and pre ss ure mu s t be checked for s uitability before connection ( s ee Section 7.4). 1. After considering the site requirements (see Section 7.0) position the fixing template on the wall ensuring it is level both horizontally and vertically. 2. Mar[...]

8.0 INST ALLA TION 20 Publication No. 5111811 8.4 Fitting The Boiler 1. Lift the boiler using the lower edges. Engage the slots at the top rear of the boiler on the wall plate hooks (Fig. 20). 2. Ensure that the boiler is level and sits against the wall. 3. Take the two steel washers and remaining screws. Using the previously drilled and plugged ho[...]

21 8.0 INST ALLA TION Publication No. 5111811 8.6 Conden s ate Drain (see section 7.6) 1. Connect the condensate drain using the 1” BSP nut and seal supplied. Ensure the discharge of condensate complies with any national or local regulations in force (see British Gas “Guidance Notes for the Installation of Domestic Gas Condensing Boilers”. 2.[...]

8.0 INST ALLA TION 22 Publication No. 5111811 8.7 Fitting the Flue (Cont) 5. Mark dimension ‘Y’ on the flue as shown (Fig. 26). Carefully cut the waste material from the flue, ensuring that the ducts are square and free from burrs. 6. The inner flue duct support bracket may be in the waste portion of the flue. In this case retrieve the bracket [...]

23 8.0 INST ALLA TION Publication No. 5111811 L 230 V Selector / Reset Switch External Controls N br b Pump Hydraulic Differential Pressure Switch r r DHW Flow Priority Microswitch g g Safety Overheat Thermostat Flue Thermostat b b NTC Sensor r r Gas V alve Spark Electrode Condensate Trap Flame Sensing Electrode N br b Fan bk bk b br bk Pressure Sw[...]

9.0 COMMISSIONING 24 Publication No. 5111811 9.1 Commi ss ioning the Boiler 1. Reference should be made to BS 5449 Section 5 when commissioning the boiler. 2. Open the mains water supply to the boiler. 3. Open all hot water taps to purge the DHW system. 4. Ensure that the filling loop is connected and open, then open the heating flow and return val[...]

25 9.0 COMMISSIONING Publication No. 5111811 9.2 Checking the Burner Pre ss ure 1. Turn on the gas and electrical supplies to the boiler and ensure that all external controls are calling for heat. 2. Set the hot water and central heating temperature controls to maximum and the selector switch to the OFF position (Fig. 37). 3. Slacken the pressure t[...]

10.0 COMPLETION 26 Publication No. 5111811 10.1 Completion 1. Hinge the facia panel upwards and engage the securing screws. Refit the case front panel and tighten the screws (Fig. 40). 2. Instruct the user in the operation of the boiler and system, explaining the operational sequence. 3. Carefully read and complete all sections of the Benchmark Com[...]

27 11.0 SER VICING THE BOILER Publication No. 5111811 11 .1 Annual Servicing 1. For reasons of safety and economy, it is recommended that the boiler is serviced annually. Servicing must be performed by a competent person. 2. After servicing, complete the relevant Service Interval Record section of the Benchmark Commissioning Checklist at the rear o[...]

11.0 SER VICING THE BOILER 28 Publication No. 5111811 11.1 Annual Servicing (Cont) 10. Ease the front edge of the left hand baffle upwards, disengaging the spring clip. Disengage the tab on the baffle from the slot in the fan hood (Fig.44). 11. Undo the screws securing the fan hood assembly to the appliance back panel, and draw the fan and hood ass[...]

29 12.0 CHANGING COMPONENTS Publication No. 5111811 IMPORTANT: When changing components ensure that both the gas and electrical supplies to the boiler are isolated before any work is started. See Section 11.1 “Annual Servicing” for removal of case panel, door etc. 12.1 Fan (Figs. 50 & 51) 1. Note the positions of the three wires on the fan [...]

12.0 CHANGING COMPONENTS 30 Publication No. 5111811 12.3 Heat Exchanger (Fig. 52) 1. Remove the fan as described in section 12.1. 2. Drain the primary circuit. Prise the pipe connecting clips off the joints in the flow and return pipes. Remove the heat exchanger return pipe. 3. Lift the heat exchanger to disconnect the flow pipe joint. Withdraw it [...]

31 12.0 CHANGING COMPONENTS Publication No. 5111811 12.5 Injector s (Fig. 54) 1. Remove the burner as described in Section 12.4. 2. Undo the screws securing the injector manifold to the inlet elbow and remove the manifold. 3. Unscrew and replace injectors as required and examine the sealing gasket, replacing as necessary. Reassemble in reverse orde[...]

12.0 CHANGING COMPONENTS 32 Publication No. 5111811 12.8 Ga s Valve (Fig. 56) 1. Undo the nut on the gas feed pipe at the tap rail 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 p[...]

33 12.0 CHANGING COMPONENTS Publication No. 5111811 12.11 Pump - Head Only (Figs. 58 & 59) 1. Drain the primary circuit and remove the socket head screws securing the pump head to the body and draw the head away. 2. Undo the screw on the pump wiring cover and remove the cover. Using a suitable flat bladed screw driver press the cable securing l[...]

12.0 CHANGING COMPONENTS 34 Publication No. 5111811 12.14 Pre ss ure Gauge (Figs. 61 & 62) 1. Drain the primary circuit and undo the nut on the pressure gauge capillary. 2. Remove the timer cover and ease the timer wiring aside. Undo the screws securing the gauge retaining bracket. 3. Remove the bracket and gauge assembly. Depress the barbs on [...]

35 12.0 CHANGING COMPONENTS Publication No. 5111811 12.17 Pre ss ure Relief Valve (Fig. 65) 1. Drain the primary circuit. 2. Disconnect the discharge pipe from the valve. Using a suitable hexagon key undo the grub screw sufficiently to release the valve. 3. Note the orientation of the valve, rotate it and withdraw it from the manifold. 4. Fit the n[...]

12.0 CHANGING COMPONENTS 36 Publication No. 5111811 12.20 Plate Heat Exchanger (Fig. 68) 1. Drain the primary circuit. 2. While supporting the heat exchanger undo the screws securing it to the brass manifolds. 3. Withdraw the heat exchanger upwards and to the left of the gas valve, taking care not to damage any wires or controls. Seal s 4. There ar[...]

37 12.0 CHANGING COMPONENTS Publication No. 5111811 12.21 Diverter Valve A ss embly (Cont) CH Pre ss ure Differential Valve (Fig. 71) 1. Remove the DHW pressure differential valve as described above. 2. From the brass diverter manifold undo the nut on the heating flow pipe. Remove the screw securing the diverter manifold to the appliance lower brac[...]

12.0 CHANGING COMPONENTS 38 Publication No. 5111811 12.23 Secondary Heat Exchanger (Fig. 73) 1. Drain the primary circuit 2. Undo the four screws securing the right hand case panel. Remove the panel. 3. Prise the connecting clips from the heat exchanger return pipe and the boiler return pipe. Remove the pipes. 4. Slacken the screws on the fan spigo[...]

39 13.0 ELECTRICAL Publication No. 5111811 Optional T imers Pump Gas V alve Air Pressure Switch Safety Thermostat Pressure Switch Hydraulic Differential T emperature Sensor Selector Switch On/Off/Reset Fan Control PCB Flame Electrode Sensing Microswitch 3-W ay V alve M2 M5 M4 M1 M3 FA 2 15 16 14 13 12 20 19 18 17 11 10 39 38 37 36 35 9 7 6 5 4 3 2 [...]

14.0 SHORT P ARTS LIST 40 Publication No. 5111811 Short Part s Li s t Key G.C. Description Manufacturers No. No. Part No. 22 Fan 5112627 23 Pressure Switch 5112999 32 Heat Exchanger 5112431 41 Burner 5112770 44 E66 402 Injector - 1.18 NG 248210 59 E66 408 Electrode Lead 248037 63 E66 411 Spark or Sensing Electrode 247384 72 Pump Complete 248042 101[...]

41 15.0 F AUL T FINDING Publication No. 5111811 Carry out initial fault finding check s 1. Check that gas, water and electrical supplies are available at the boiler. Electrical supply = 230V ~ 50 Hz. CH water system pressurised to 0.5 bar when the boiler is cold. The preferred minimum gas pressure is 19.5mbar (natural gas), or 36mbar (propane). 2. [...]

15.0 F AUL T FINDING 42 Publication No. 5111811 Dome s tic Hot Water - Follow operational sequence Turn selector to neon illuminated Primary flow switch operated Fan runs at max speed Pump runs Turn thermostat to max. Open DHW tap fully. DHW flow switch operated Primary water is diverted from CH system to DHW heat exchanger and flow microswitch ope[...]

43 15.0 F AUL T FINDING Publication No. 5111811 Fault Finding Solution s Section s A to E Is there 230V at: Is there 230V at: Main terminals L and N Check electrical supply 1. NO Main terminal fuse Replace fuse Replace PCB neon illuminated 2. YES Selector terminals a & b and a & 3. PCB - M1 connector terminals 9 & 10 Check wiring Replac[...]

15.0 F AUL T FINDING 44 Publication No. 5111811 Check and correct if necessary 1. Electrical and pressure tube connections 2. Blockage of pressure tubes 3. Restriction in flue 4. Venturi NO E Replace air pressure switch Gas at burner Ensure gas is on and purged Replace PCB Replace gas valve neon illuminated PCB - M4 connector is approx 230V AC, ter[...]

45 15.0 F AUL T FINDING Publication No. 5111811 Check and correct if necessary 1. Flame sensing electrode and lead connections 2. Electrode position Flame current should be 1 µA approx. Replace PCB Replace PCB YES YES Replace flame sensing electrode NO YES Ensure that mains input terminal L is Live (230V) and N is Neutral (0V) I Check terminal 1 o[...]

CONTROLS To comply with the Building Regulations, each section must have a tick in one or other of the boxes TIME & TEMPERATURE CONTROL TO HEATING ROOM T/STAT & PROGRAMMER/TIMER PROGRAMMABLE ROOMSTAT TIME & TEMPERATURE CONTROL TO HOT WATER CYLINDER T/STAT & PROGRAMMER/TIMER COMBI BOILER HEATING ZONE VALVES FITTED NOT REQUIRED HOT WA[...]

SERVICE 1 DATE ENGINEER NAME COMPANY NAME TEL No. CORGI ID CARD SERIAL No. COMMENTS SIGNATURE SERVICE 2 DATE ENGINEER NAME COMPANY NAME TEL No. CORGI ID CARD SERIAL No. COMMENTS SIGNATURE SERVICE 3 DATE ENGINEER NAME COMPANY NAME TEL No. CORGI ID CARD SERIAL No. COMMENTS SIGNATURE SERVICE 4 DATE ENGINEER NAME COMPANY NAME TEL No. CORGI ID CARD SERI[...]

Publication No. 5111811 - Iss. 4 (04/2006) All descriptions and illustrations provided in this leaflet have been carefully prepared but we reserve the right to make changes and improvements in our products which may affect the accuracy of the information contained in this leaflet. All goods are sold subject to our standard Conditions of Sale which [...]