Ideal Boilers Classic FF 340 LF Installation And Servicing Manual

Also see for Classic FF 340 LF: User guide

Classic FF 340 - 360 LF - Installation & Servicing 19INSTALLATIONSIDE FLUE OUTLETFor flue lengths greater than 600mm referto Frames 34 & 35 - Flue extension ducts.Flue assembly1. To determine the position for the foam seal measure thewall thickness and mark it onto the flue, measuring fromthe groove near the terminal.2. Wrap the self-adhesive foam strip round the flue,ensuring that the foam is on the terminal side of theline. This seals the gap between the flue and the wall.1Cla 1834NOTCHNOTCH225 CUTTING THE FLUEFor flue lengths 114 to 600mm ONLY1. Measure the flue length required (i.e. the distance fromthe side of the boiler to the outside face of the wall).Refer to Frame 10.2. Mark the flue length required onto the flue, measuringfrom the groove near the terminal.3. To ensure the tube is cut square, mark the flue all theway round.4. Insert the cardboard duct ring for support and cut tolength.5. Remove cardboard duct ring and remove any burrs.27 FITTING BOILER SEALING RINGTO THE FLUE1. Fit the boiler sealing ring inside the outer flue duct.Ensure the boiler sealing ring is fully engaged.Ensure the notch aligns with the groove on the outer flueduct. This ensures correct alignment of the flue terminal.2. Drill 3 holes 3.2mm ( 1/8 ") dia. through the outer flue ductand boiler sealing ring.Do not drill the inner flue duct.3. Insert the self tapping screws, provided, in order to fix theboiler sealing ring in position.28 FITTING THE FLUE ASSEMBLY1. Insert the flue assembly through the hole far enough toallow the rubber seal to unfold completely and form anadequate seal on the outside wall. This will also ensurethe correct alignment of the flue terminal.2. Ensure the notch is at the top. This will aid the location ofthe studs into the boiler back panel.26 FITTING THE FOAM SEAL