6Classic RS - Installation & ServicingGENERALCompartment InstallationsA compartment used to enclose the boiler MUST be designed andconstructed specially for this purpose. An existing cupboard orcompartment may be used, providing it is modified for the purpose.In both cases details of essential features of cupboards/compartment design, including airing cupboard installation, areto conform to the following:!!!!! BS. 6798.!!!!! The position selected for installation MUST allow adequatespace for servicing in front of the boiler and for air circulationaround the boiler; see section on 'Air Supply'.! For the minimum clearances required for safety andsubsequent service, see Frame 2. In addition, sufficientboiler clearance may be required to allow lifting access tothe wall mounting plate.GAS SUPPLYThe local gas supplier should be consulted, at the installationplanning stage, in order to establish the availability of an adequatesupply of gas. An existing service pipe must NOT be used withoutprior consultation with the local gas supplier.A gas meter can only be connected by the local gas supplier or bya local regional contractor.An existing meter should be checked, preferably by the gas supplier,to ensure that the meter is adequate to deal with the rate of gassupply required. A minimum gas pressure of 20 mbar MUST beavailable at the boiler inlet, with the boiler operating.Installation pipes MUST be fitted in accordance with BS. 6891. InIE refer to I.S. 813:2002. Pipework from the meter to the boilerMUST be of an adequate size.The complete installation MUST be tested for gas soundness andpurged as described in the above code.FLUE INSTALLATIONPluming may occur at the terminal so terminal positions whichwould cause a nuisance should be avoided.The flue must be installed in accordance with therecommendations of BS. 5440-1:2000. In IE refer to I.S. 813:2002.The following notes are intended for general guidance:-1. The boiler MUST be installed so that the terminal is exposedto external air.2. It is important that the position of the terminal allows the freepassage of air across it at all times.3. Minimum acceptable spacing from the terminal toobstructions and ventilation openings are specified in Table3.4. Where the lowest part of the terminal is fitted less than 2m(6' 6") above a balcony, above ground or above a flat roof towhich people have access then the terminal MUST be protectedby a purpose designed guard.Terminals guards are available from boiler suppliers. Ask forTFC Flue Guard, Model A. In case of difficulty seek advice from:Grasslin (UK) Ltd., Tower House, Vale Rise, Tonbridge,Kent TN9 1TB.Tel: +44 (0) 1732 359 888. Fax: +44 (0) 1732 354 445www.tfc-group.co.ukEnsure that the guard is fitted centrally.5. If a natural draught terminal is fitted less than 1m below aplastic gutter or less than 0.5m below painted eaves or anyother painted surface a suitable shield at least 1m longshould be fitted to protect the surface.6. The air inlet/products outlet duct and the terminal of the boilerMUST NOT be closer than 25mm (1") to combustible material.Detailed recommendations on the protection of combustiblematerial are given in BS.5440-1:2000. In IE refer to I.S. 813:2002.IMPORTANT. It is absolutely ESSENTIAL to ensure, in practice,that products of combustion discharging from the terminal cannotre-enter the building or any other adjacent building throughventilators, windows, doors, other sources of natural air infiltrationor forced ventilation/air conditioning.If this should occur, the appliance MUST be turned OFF, labelled'unsafe' and corrective action taken.TERMINALThe terminal assembly can be adapted to accommodate variouswall thicknesses. Refer to Frame 4 - Unpacking.AIR SUPPLYDetailed recommendations for air supply are given in BS.5440:2.In IE refer to I.S. 813:2002.The following notes are for general guidance:1. It is NOT necessary to have a purpose provided air vent in theroom or internal space in which the boiler is installed.2. If the boiler is to be installed in a cupboard or compartment,permanent air vents are required (for cooling purposes) in thecupboard/compartment, at both high and low levels. The airvents must either communicate with room/internal space, orbe direct to outside air. The minimum effective areas of thepermanent air vents, required in the cupboard/compartment,are specified in Table 4 and are related to maximum rated heatinput.Table 3 - Balanced flue terminal positionTerminal Position Minimum Spacing330-340 350-3601a. Directly BELOW an opening, 600mm 1500mmair brick, opening window etc. (24") (60")1b. Directly ABOVE an opening, 300mm 300mmair brick, opening window etc. (12") (12")1c. HORIZONTALLY to an opening, 400mm 600mmair brick, opening window etc. (16") (24")2. Below guttering, drain pipes orsoil pipes 300 mm (12")3. Below eaves 300 mm (12")4. Below balconies or a car port roof 600 mm (24")5. From vertical drain pipes or 300 mm (12")soil pipes6. From an internal or external corner orto a boundary alongside the terminal 600 mm (24")7. Above adjacent ground, roof orbalcony level 300 mm (12")8. From a surface or a boundaryfacing the terminal 600 mm (24")9. From a terminal facing a terminal 600 mm (24")10. From an opening in a car port(e.g. door or window) into dwelling 1200 mm (48")11. Vertically from a terminal on thesame wall 1500 mm (60")12. Horizontally from a terminal onthe wall 300 mm (12")