Please leave these instructions with the user MULTIPOINT BF Gas Fired Balanced Flue Water Heater 6 720 607 090 (03.
Natural Gas Main Multipoint BF G.C. No 52-467-01 This appliance conforms to European Standard EN 26. Type test for purpose certified by Notified Body CE-0087. Product/Production certified by Notified Body CE-0464. For GB / IE only. Care must be taken when lifting and handling this appliance, seek assistance where appropriate. Protective equipement (e.g. gloves) should be worn as necessary. User Information Your Main Multipoint BF is designed to meet all relevant standards.
Contents Section 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 6 720 607 090 page User’s Operating Instructions ..................................... 4 General Layout .............................................................. 5 Technical Data ............................................................... 6 Dimensions and Fixings ................................................ 7 General Information ...................................................... 8 Installation Regulations ..........
1. User’s Operating Instructions Pilot ignition: 1. Depress slide control and hold it in. - Off 2. Press the igniter repeatedly until the pilot is alight. - Pilot - Burner - Igniter 3. Release the slide control approx 10 seconds after pilot lights. 4. Repeat these steps if the pilot does not remain alight. Burner operation: When the slide control is in the “burner” position the burner will ignite when a hot tap is turned on.
2. General Layout Appliance components 1 2 3 4 5 6 7a 7b 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Fig. 3 Appliance water flow diagram.
3. Technical Data TABLE 1 - GENERAL Natural Gas I2H C11 7 kW 23 kW 25.5 kW Gas category Appliance Type Minimum rated output Maximum rated output Rated input (Net) 3 Gas rate (CV 34 MJ/m ) Inlet pressure Number of injectors Injector diameter Pilot injector marking Burner pressure Height Width Depth Dry weight Gas connection Hot/cold water connections 3 2.9 m /hr 20 mbar 16 1.05 mm 104 14.
4. Dimensions and Fixings Fig.
5. General Information 6. Installation Regulations 5.1 GENERAL INSTALLATION If the appliance is to be fitted into a compartment, the compartment must conform to the requirements of BS 6798. Do not place anything on top of the appliance. The clearances specified for servicing must be maintained. 6.1 Warning - Check the information on the data plate is compatible with local conditions. 5.
7. Siting the Appliance 7.1 The appliance is NOT suitable for external installation. 7.2 The appliance is NOT suitable for SE DU CT application. 7.3 The appliance is suitable for replacement onto four stud flue terminals as shown (check dimensions on page 7). The following Appliance Models will have a compatible flue terminal: Severn4/5, Avon, Trent, Thames, Medina/DL, Medway, Bristol and Mersey. It is advisable to examine the condition of the flue and replace if necessary. 7.
8. Siting the Flue Terminal See Fig. 8. 8.1 The flue must be installed as specified in BS 5440:Part 1. 8.2 If the terminal discharges onto a pathway or passageway, check that the combustion products will not cause a nuisance and that the terminal will not cause an obstruction. 8.3 If the terminal is fitted within 850 mm of a plastic or painted gutter or within 450 mm of painted eaves then an aluminium shield at least 750 mm long should be fitted to the underside of the gutter or painted surface. 8.
9. Air Supply 9.1 The appliance does not require a separate vent for combustion air. 9.2 The appliance may be installed in an unvented compartment. 9.3 There must be sufficient clearance around the appliance to allow proper circulation of air. The clearences required for operation will normally be adequate. 9.4 Refer to BS 6798 and BS5440:2 for additional information. 10. Gas Supply 10.1 The gas installation should be in accordance with BS 6891. 10.
11.4 Unfasten the two retaining screws and lift the case clear. 11.5 Remove the flue hood from the appliance by undoing the three fixing screws and lift the hood clear. 11.6 Place the appliance on its side, obtain the flue terminal sealing strip from the kit and fit into the recess around the flue aperture in the back of the appliance. (fig. 10). 11.7 Lift the appliance and locate onto the four flue terminal mounting studs. Secure in position using the four slotted nuts and washers provided. 11.
12. Commissioning Before commissioning the appliance, the gas installation must be purged and tested for gas soundness in accordance with BS 6891. Fig. 12 - Inlet pressure test point Fig. 13 - Gas control slide - Pilot ignition position Fig. 14 - Gas control slide - operating position Move slide control to the far left Fig. 15 - Gas control slide - shut down position Fig. 16 - Burner pressure test point 6 720 607 090 12.1 Ensure that the gas isolation valve in the gas inlet pipe is turned off. 12.
13. Inspection and Servicing For reasons of safety and economy it is recommend that the appliance is serviced annually. The servicing must be carried out by a competent person. Before commencing any service operation turn off the gas supply at the main gas service cock. Ensure that the appliance is cool. Access for Servicing Pull off the fascia and undo the two fixing screws. Pull off the Temperature Control Knob. Unscrew Temperature Control Knob Bezel. Lift the casing clear. (See fig. 17). Fig.
13.3 Main Burner Disconnect the pilot gas pipe at the gas valve. Disconnect the pilot gas pipe from the pilot burner and remove from the appliance complete with seal. Take care not to lose the pilot injector. Remove the two screws retaining the pilot bracket and lift complete assembly clear. Disconnect the union fittings at either end of the pressure test pipe located to the left hand side of the burner. Remove and retain the fibre washer. Remove the pressure test pipe.
14. Replacement of Parts Any servicing or parts replacement must be carried out by a competent person. Use only genuine Manufacturer’s Parts. Before commencing servicing or parts replacement turn off the gas supply at the main gas isolation valve and ensure that the appliance is cool. 14.1 Pilot Burner / Injector Disconnect the pilot gas pipe and thermocouple at the gas valve and pull off the red cable from the igniter unit.
outlet connections and lift the heat exchanger clear. Replace the heat exchanger and re-assemble in reverse order. 14.5 Igniter Unit Pull off the two wires from the rear of the unit, unscrew the plastic retaining nut on the control panel and push out the Piezo unit. Replace and re-assemble in reverse order. (fig. 22). 14.6 Water Valve Isolate the appliance from the incoming cold water supply and drain down the appliance via the fitted drain cock.
15.Fault Finding Problem Incorrect water temperature. Cause Incorrect gas rate. Solution Check the gas supply to appliance gas isolation valve. Open the gas isolation valve. Check the burner pressure. Incorrect water flow rate. Noise. Pilot flame will not light or stay lit. Main burner will not light. Explosive ignition. Water section sticking or faulty. Incoming supply valve closed. Low water pressure. Water section sticking or faulty. Scale in heat exchanger. High gas rate. Low water flow rate.
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GENERAL ENQUIRIES (GB) 08706 060 780 TECHNICAL (GB) 08706 049 049 SERVICE (GB) 08706 096 096 LITERATURE REQUEST (GB) 08706 060 623 TECHNICAL (IE) 1850 560 570 Baxi Potterton A Trading Division of Baxi Heating U.K. Ltd Brownedge Road Bamber Bridge Preston Lancashire PR5 6SN www.baxipotterton.co.
