Installation And Servicing Instructions - Heatingspares247.com

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WD209/1/2000 Chapter 3 : Installation The Keston Celsius 25 & 25PNote:It is equally important to seal the air inlet with solvent cement as the flue outletpipe joints.3.5 CONDENSATE DRAINAGEConnect the condensate drainage system to the boiler. It is advisable to use a detachablefitting at connection to the boiler to enable easy removal for servicing.Fill the condensate trap by pouring water into the boiler flue spigot until water is seen toflow freely from the condensate drainage system. Make the final connection of flue pipeto the boiler.Details are provided in Chapter 2 - Section 2.11 Condensate DrainageConnection : 22 mm plastic pipe.3.6 WATER SYSTEMConnect the flow and return pipework to the boiler. Details of system requirements aregiven in Chapter 2 - Section 2.7 Water Systems.Connections : 0.75” BSPFFor optimum performance after installation, this boiler and its associated central heatingsystem must be flushed in accordance with the guidelines given in BS7592:1992,"Treatment of water in domestic hot water central heating systems".This must involve the use of a proprietary cleaner, such as Fernox Superfloc, orBetzDearborn's Sentinel X300 or X400. Full instructions are supplied with the products,but for immediate information, please contact Fernox on 01799 550811 or BetzDearbornon 0151 420 9563.For long term protection against corrosion and scale, after flushing, it is recommendedthat an inhibitor such a Fernox MB1 or BetzDearborn's Sentinel X100 is dosed inaccordance with the guidelines given in BS7593:1992.3.7 GAS SUPPLYConnect the gas supply to the appliance. Details of gas supply requirements are given inChapter 2 - Section 2.6 Gas Supply. Supply of adequate gas pressure (with the boilerrunning) is critical to ensure reliable operation of the boiler.Connections : 0.75 inch BSPF.3.8 ELECTRICAL SUPPLYThe entry point(s) for the electrical supply cable(s) is in the base of the appliance (seeSection 2.2 Service Connections fig. 2.1.2) via two cord grip bushes. Feed the cable(s)through its bush and route inside the cabinet to the connection strip located to the frontbottom right of the cabinet.1. The electrical supply must be as specified in Chapter 2 - Section 2.4 ElectricalSupply.WARNING : THIS APPLIANCE MUST BE EARTHED.2. All external controls and wiring must be suitable for mains voltage.Supply wiringshould be in PVC insulated cable not less than 1.0mm 2 to BS 6500 Table 16(material code H05VV-F).3. The permanent live supply connection may be via a 3 amp fused double poleswitch, serving only the boiler. (Refer to Chapter 2 - Section 2.4 ElectricalSupply). The system controls and 2A switched supply for the boiler must also besupplied via this isolator.4. Securely tighten the terminal screws and route the cable through the re-openablecable clips. Ensure all cables are secured and that the cord grip bush is tightenedto securely grip the main cable at entry to the cabinet. Remove the factory fittedlink wire between terminals SL and SL(Link) on the boiler.The supply cable(s) must be connected to the main terminals as follows:Installation & Servicing Instructions Page : 17
WD209/1/2000 Chapter 3 : Installation The Keston Celsius 25 & 25PN - Blue wire (Neutral) for 3A permanent and 2A switchedsuppliesPL - Brown wire (Live) 3A permanent supply- Yellow/Green Wire (Earth)SL - Brown wire (Live) 2A switched supply.ORSL & SL(LINK) -Link connection via volt free external controlsLO - To external 230V remote lockout monitoring (optional)RUN - To external 230V remote run monitoring (optional)Ensure connection is made such that if the cable slips in its anchorage thecurrent carrying conductors become taut before the earthing conductor.3.9 EXCHANGING A BOILERBefore removing an existing boiler add Fernox Supafloc , or equivalent cleaning agent, inaccordance with the manufacturers instructions. Open all radiator valves and fire theboiler. When the system is fully heated, shut off the gas supply and drain down thecentral heating system.ImportantThe Celsius 25 condensing boiler contains components which could be damaged orblocked by grease, dirt or solder etc. It is essential that sludge or scale is removed froman existing system.The guarantee provided with the Keston Celsius 25 does not cover damage caused bysystem debris or sludge.Connect the new boiler as instructed in this manual and fit in accordance with Sections3.1 to 3.8For sealed systems, fill to a pressure of about 2.7 bar. Check the complete system forwater soundness. If leaks need to be rectified using flux or solder the system must beflushed cold again before proceeding.Reduce the pressure to the Initial System Design Pressure for sealed systems, ifapplicable. Vent the system.Gas SupplyThe complete gas installation up to the boiler service cock must be checked forsoundness. BS 6891.Electrical InstallationCarry out preliminary electrical safety checks, i.e. Earth continuity, Polarity, Resistance toEarth, Short Circuit using a suitable test meter.Initial FiringThe gas pressure setting is factory adjusted to within the required range and doesnot need re-adjustment. If the reading is incorrect then check such factors assoundness of the air and flue pipe joints, pressure sensible joints and the gas inletpressure (minimum 18 mbar required for Natural Gas and 31 mbar required for LP gas). Ifall joints are sound and the gas inlet pressure is satisfactory set the gas pressure andcheck the gas input. Full details of this procedure are given in Section 4.8 Timing TheGas Meter.Combustion TestingIt is advisable on all installations that the combustion quality is checked by measuring thecarbon dioxide (CO 2), or oxygen (O 2) level. This procedure is detailed in Section 4.9Combustion Testing. Badly tuned combustion will lead to reduce the life of the boiler andinvalidate the warranty.Installation & Servicing Instructions Page : 18
Page 2 and 3: WD209/1/2000The Keston Celsius 25 &
Page 4 and 5: WD209/1/2000 Chapter 1 : General In
Page 6 and 7: WD209/1/2000 Chapter 1 : General In
Page 8 and 9: WD209/1/2000 Chapter 2 - Boiler Con
Page 18 and 19: WD209/1/2000 Chapter 3 : Installati
Page 22 and 23: WD209/1/2000 Chapter 4 : Commission
Page 24 and 25: WD209/1/2000 Chapter 4 : Commission
Page 26 and 27: WD209/1/2000 Chapter 5 : Fault Find
Page 42 and 43: WD209/1/2000 Chapter 6 : Servicing
Page 44 and 45: WD209/1/2000 Chapter 7 : Replacemen
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Page 48 and 49: WD209/1/2000 Chapter 8 : Spare Part
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