11Mexico Super FF440 - FF480 - Installation & ServicingREAR FLUE OUTLETINSTALLATION8 PREPARING THE BOILER Notes.! Before placing the boiler in the selected position any gas andwater connections at the rear of the boiler should beprepared, due to the possible lack of access.! The pump may be fitted to the FLOW or the RETURN.1. Screw the distributor tube (supplied with a 1" BSP x 28mmcopper adaptor) into the selected heating return tapping,using an appropriate jointing material.IMPORTANT. It is IMPERATIVE that the index mark on thedistributor tube bush is in alignment with the mark on thesection boss, as shown in Frame 3. DO NOT disturb it whenconnecting subsequent pipework.Fully pumped systems using more than 1 pump, servingseparate zones, must have a common return connection tothe distributor tube.2. Select the desired pumped flow tapping.3. Screw the supplied boiler thermostat pocket into theappropriate front section tapping, using an approved jointingmaterial. Refer to Tables 5 and 6.4. Connect pipe fittings to the rear tappings and plug anyunused tappings.Note. If using iron elbows fit a short straight connector into theboiler tapping first, to clear the casing.Connections - as viewed at front Thermostat PositionBack Section Front SectionCH DHWFlow Return Flow Return TopLH LH RH RH LHLH RH RH LH LHRH RH LH LH RHRH LH LH RH RHTable 6 - Gravity Domestic Hot Waterand Pumped Central HeatingTable 5 - Fully Pumped SystemsConnections - as viewed at front Thermostat PositionBack Section Front SectionFlow Return TopLH LH LHLH RH LHRH RH RHRH LH RH9 REAR FLUE ASSEMBLY - Exploded viewLEGEND1. Terminal.2. Weather seal.3. Flue assembly.4. Boiler sealing ring.5. Flue extension tube (long, with ring).6. Sealing plate.7. Flue connector.8. Turret access cover.1. Remove the turret access cover.2. Locate the LONG flue extension tube (with the airdeflector ring) in the flue accessories pack.3. FF440 models only. Undo the 2 self-tapping screwssecuring this ring and slide to the centre of the flue tube.Note. The boiler turret assembly is factory built, ready for rear flue installation.4. Offer the extension tube down through the access holeand partly out through the rear turret hole.5. FF440 models only. Relocate the air deflector ring - it willonly fit one way, due to the offset tabs - and secure its reartab in the rear hole with a self-tapping screw (inserting thisfrom the outside of the turret).6. Pull the flue extension tube foward to the flue connectorand secure to the fan outlet assembly with the M4 screw.7. FF440 models only. Refit the front self-tapping screw tothe second fixing tab on the air ring.