Ideal Boilers Classic Combi FF 280 Installation And Servicing

Also see for Classic Combi FF 280: Installation and Servicing Manual User guide

Classic Combi FF 280 - Installation 7AIR SUPPLYDetailed recommendations for air supply are given inBS.5440:2.The following notes are for general guidance:1. It is NOT necessary to have a purpose provided air vent inthe room 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) atboth high and low levels. The air vents must eithercommunicate with room/internal space or be direct to outsideair. The minimum effective areas of the permanent air ventsrequired in the cupboard/compartment are specified asfollows and are related to maximum rated heat input.3. Both air vents MUST communicate with the same room orinternal space or MUST be on the same wall to outside air.4. In siting the air vents care must be taken to avoid thefreezing of pipework.Refer to Table 5 for details of air vent position and sizing.GENERALFLUE INSTALLATIONThe flue must be installed in accordance with therecommendations of BS. 5440:1.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 inTable 4.4. 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 beprotected by a purpose designed guard. The minimumspacing in Table 4; Nos. 2, 3, 4, 5 and 6 would be 75mm inorder to allow a terminal guard to be fitted.Terminals guards are available from:Tower Flue Components Ltd.,Vale Rise, Tonbridge, Kent TN9 1TBTelephone No. 01732 351 555Ensure that the guard is fitted centrally.5. Where the terminal is fitted within 1000mm (39 1/2 ") of aplastic or painted gutter or 500mm (19 1/2 ") of paintedeaves then an aluminium shield at least 1000mm (39 1/2 ")long should be fitted to the underside of the gutter orpainted surface.6. The air inlet/products outlet duct and the terminal of theboiler MUST NOT be closer than 25mm (1") to combustiblematerial. Detailed recommendations on the protection ofcombustible material are given in BS.5440: Part 1.7. Where it is essential that the terminal wall plate is fitted, i.e.wall thicknesses over 600mm (23 5/8 ") or with aninaccurately cut hole, the minimum spacing in Table 4, Nos.2,3, 5 and 6 would be 60mm in order to allow the terminalwall plate to be fitted.IMPORTANTIt is absolutely ESSENTIAL to ensure, in practice, that productsof combustion discharging from the terminal cannot re-enter thebuilding or any other adjacent building through ventilators,windows, doors, other sources of natural air infiltration or forcedventilation/air conditioning.If this should occur, the appliance MUST be turned OFFimmediately, labelled 'unsafe' and corrective action taken.TERMINALThe terminal assembly can be adapted to accommodate variouswall thicknesses - refer to Frame 6 'Unpacking'.Table 4 - Balanced flue terminal positionTerminal Position Minimum Spacing1. Directly below or alongside anopenable window, air vent or otherventilation opening 300 mm (12")2. Below guttering, drain pipes or soilpipes 25 mm ( 1")3. Below eaves 25 mm ( 1")4. Below balconies or a car port roof 25 mm ( 1")5. From vertical drain pipes or soil pipes 25 mm ( 1")6. From internal or external corners 25 mm ( 1")7. Above adjacent ground, roof orbalcony level 300 mm (12")8. From a surface facing the terminal 600 mm (24")9. From a terminal facing a terminal 1200 mm (48")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 on the wall 300 mm (12")Table 5 - Air supplyPosition of air vent Air from room/ Air directinternal space from outsideHigh level cm 2 (in 2 ) 264 (41) 132 (21)Low level cm 2 (in 2 ) 264 (41) 132 (21)WATER CIRCULATION SYSTEMThe boiler is designed for connection to sealed water centralheating systems but connection may be made to open watersystems, if required. The domestic hot water (DHW) calorifier isincorporated within the boiler casing and only requiresconnection to the mains water supply.