Ideal Boilers Mexico Super FF440 Installation And Servicing Manual

23Mexico Super FF440 - FF480 - Installation & ServicingINSTALLATIONWARNINGThe appliance MUST be efficiently earthed.A mains supply of 230 V ~ 50 Hz is required.The fuse rating should be 3A.All external controls and wiring MUST be suitable for mainsvoltage.Wiring should be in 3-core PVC insulated cable NOT LESSthan 0.75 mm 2 (24 x 0.2 mm) to BS.6500, Table 16.Wiring external to the boiler MUST be in accordance withcurrent l.E.E. (BS.7671) Wiring Regulations and localregulations. For Ireland reference should be made to thecurrent ETCI rules for electrical installations.43 ELECTRICAL CONNECTIONSConnection must be made in a way that allows completeisolation of the electrical supply - such as a double poleswitch, having a 3mm (1/8") contact separation in bothpoles, or a plug and socket serving only the boiler andsystem controls.The means of isolation must be accessible to the user afterinstallation.This connection should be readily accessible and be madeadjacent to the boiler (except in the case of bathroominstallations for domestic boilers where the point ofconnection to the mains MUST be outside of the bathroom.)44 INTERNAL WIRINGFlow and pictorial wiring diagrams are shown inFrames 45 and 46.1. Remove the securing screw and lift off thecontrol box cover.2. Route the electrical leads into the box and wireinto the terminal strip, as shown.Notes.a. Secure each lead with one of the cable clamps.b. The mains lead connection MUST be made sothat, should the lead slip from its anchorage,the current conductors become taut before theearthing conductor.45 EXTERNAL CONTROLSPCB25mex7390Note. If there are no external controls the circulatingpump MUST be wired into the control box.External wiring must be in accordance with the current I.E.E.(BS 7671) Wiring Regulations. For Ireland reference shouldbe made to the current ETCI rules for electrical installations.The wiring diagrams illustrated in Frames 47-49 cover thesystems most likely to be fitted to this appliance.For wiring external controls to the Mexico Super FF boilerreference should be made to the system wiring diagramssupplied by the relevant manufacturer, in conjunction with theflow wiring diagram below and also Frame 46.Difficulty in wiring should not arise, providing the followingdirections are observed:1. Controls that switch the system ON and OFF, e.g. a timeswitch, MUST be wired, in series, in the live mains lead tothe boiler.2. Controls that override an on/off control, e.g. a frostthermostat, MUST be wired into the mains lead, in parallel,with the control(s) to be overridden. Refer to Frame 50.3. If a proprietary system is used, follow the instructionssupplied by the manufacturer.LEGENDb bluebk blackbr browngy greyor orangep pinkr redv violetw whitey/g yellow/greenINSTALLATION