Ideal Boilers Classic FF 250 P Installation And Servicing Manual

22 Classic FF - Propane InstallationINSTALLATION38 ELECTRICAL CONNECTIONSWARNING. The appliance must be efficiently earthed.A mains supply of 230 V ~ 50 Hz is required.All external controls and wiring must be suitable for mains voltage.Wiring should be in 3-core PVC insulating cable, not less than0.75mm 2 (24 x 0.2mm) to BS. 6500 Table 16 Wiring Regulationsand local regulations.Connection must be made in a way that allows complete isolationof the electrical supply - such as a double pole switch, having a3mm ( 1/8 ") contact separation in both poles, serving only theboiler and system controls. The point of connection to the mainsshould be readily accessible.39 EXTERNAL CONTROLSThe wiring diagrams illustrated in Frames 39-41 cover thesystems most likely to be fitted to this appliance.For wiring external controls to the Classic FF boiler, referenceshould be made to the system wiring diagrams supplied by therelevant manufacturer, in conjunction with the wiring diagramsshown in Frames 41-43.Difficulty in wiring should not arise, providing the followingdirections are observed:1. Controls that switch the system on or off, e.g. a time switch,must be wired, in series, in the live mains lead to the boiler.2. Controls that override an on/off control, e.g. frostthermostat, must be wired into the mains lead, in parallel,with the control(s) to be overridden. Refer to Frame 43.3. Controls that switch the circulation pump only on and off,e.g. a room thermostat, must be wired, in series, with thepump in the live pump lead.4. If a proprietary system is used, follow the instructionssupplied by the manufacturer.5. System designs featuring controls or wiring arrangementswhich allow the boiler to fire when there is no pumpcirculation taking place should not be fitted.Advice on required modifications to the wiring may beobtained from the component manufacturers.Notes.1. Connection between a frost thermostat and the timecontrol should be made without disturbing other wiring.2. A frost thermostat should be sited in a cool place in thehouse, but where it can sense heat from the system.LEGENDb bluebk blackFlow wiring diagramNote. If the optional Programmer Kit is to befitted refer to the instructions provided with thekit and Frame 39.v violetpk pinky/g yellow/greenbr brownr redy yelloww whitegy greyor orange37 WATER CONNECTIONS1. Remove the plastic plugs from the flow andreturn pipes.2. Make all water connections and check for watersoundness.36 GAS CONNECTIONRefer to 'Gas Supply ', page 7.Refer to Frame 2 for gas inlet service dimensions.A minimum pressure of 37 mbar MUST be available at the boilerinlet with the boiler operating. The main gas cock is on the left handside of the gas control valve, as shown. To facilitate connection thegas cock may be removed from the gas control valve.1. Remove the control box securing screws.Swing the box down into the servicingposition. Refer to Frame 46.2. Route the mains cable into the box from theRHS of the boiler.3. Connect the live, neutral and earth wires intothe terminal strip as shown.4. Secure the mains lead with the cable clamp.5. On completion of all wiring connections,relocate the control box and secure.INSTALLATION