Ideal Boilers HE24 Installation And Servicing Instructions

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Ideal Boilers HE24 Installation And Servicing Instructions Manual pdf 27 page image

27INSTALLATIONisar + programmer - Installation and Servicing32 ELECTRICAL CONNECTIONSWiring should be 3 core PVC insulated cable, not less than0.75 mm 2 (24 x 0.2mm), and to BS 6500 Table 16. For IEreference should be made to the current ETCI rules forelectrical installations.Connection 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 beaccessible to the user after installation.WARNING. This appliance MUST be earthed.A mains supply of 230 V ~ 50 Hz is required.The fuse rating should be 3A. All external controls and wiringmust be suitable for mains voltage.Wiring external to the boiler MUST be in accordance with thecurrent I.E.E. (BS.7671) Wiring Regulations and any localregulations.1. Route the mains cable into the bottom rear centre ofthe boiler.2. Wire the permanent live supply into the 5-wayremote plug terminals, L3, N & .IMPORTANT.A permanent live is ESSENTIAL in order for theadvanced diagnostic controls to function correctly.33 INTERNAL WIRING3. Wire the normal room thermostat switched live supply intoL2 or connect L1 and L2 via external control switching asshown in Frame 34. In either case remove the wire linkfitted to L1 to L2.4. Secure the mains lead with the cable clamp.5. Connect the mains lead connector. Ensure it is fullylocated.L3NL2L1Mains Connector(supplied in hardware pack)Socket(fixed to boiler)Remove link when connecting external programmer.nm8071Ecl 1542A pictorial wiring diagram is shown in Frame 35.Note.Ensure that the lengths of the current carrying conductorsare shorter than the earth conductor so that if the cableslips in its anchorage the current carrying conductorsbecome taut before the earth conductor.INSTALLATION