Ideal Boilers Classic FF 330 Installation And Servicing

Ideal Boilers Classic FF 330 Installation And Servicing Manual pdf 22 page image

22Classic FF - Installation & ServicingINSTALLATION37 WATER CONNECTIONS1. Remove the plastic plugs from the flow andreturn pipes.2. Make all water connections and check forwater soundness.38 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. Wiringshould be in 3-core PVC insulated & sheathed cable, not less than0.75mm 2 (24 x 0.2mm) to BS. 6500 Table 16 Wiring Regulations andlocal regulations. For IE reference should be made to the current ETCIrules for electrical installations.Connection must be made in a way that allows complete isolation of theelectrical supply - such as a double pole switch, having a 3mm (1/8")contact separation in both poles or a plug and socket, serving only theboiler and system controls. The means of isolation must be accessibleto the user after installation.36 GAS CONNECTIONExternal wiring must be in accordance with the current I.E.E.(BS 7671) Wiring Regulations. For Ireland reference should bemade to the current ETCI rules for electrical installations.The wiring diagrams illustrated in Frames 41-43 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. If a proprietary system is used, follow the instructionssupplied by the manufacturer.4. System designs featuring controls or wiringarrangements which allow the boiler to fire when there isno pump circulation 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.Refer to 'Gas Supply ', page 6.Refer to Frame 2 for gas inlet service dimensions.A minimum pressure of 20 mbar MUST be available at the boiler inletwith the boiler operating. The main gas cock is on the left hand side ofthe gas control valve, as shown. To facilitate connection the gas cockmay be removed from the gas control valve.Flow wiring diagram Note.If the optional Programmer Kit is to befitted refer to the instructions provided with thekit and Frame 39.1. 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 fromthe RHS of the boiler.3. Connect the live, neutral and earth wiresinto the terminal strip as shown.4. Secure the mains lead with the cableclamp.5. On completion of all wiring connections,relocate the control box and secure.LimitthermostatProgrammer unit O/heat thermostatThermostat sensorLNbbr brbrLLBLBOff On Off On8 Pin connector tosystem controlsOptional Programmer Kit BoilerSwitchHW CHALL EARTHS must be connected(Not all earths are shown for clarity)Airpressureswitchy orr wCla 2642Combined spark &sensing electrodeL NTCNCNCNOP.C.B. 25GV 1GV 2FANEMain gasPilot gasFanbbConnecttogybkbror pkwy/gNbk bkNONCcom bk bkrryvLEGENDb bluebk blackw whitey/g yellow/greenbr browngy greyor orangepk pinkr redv violet39 EXTERNAL CONTROLSINSTALLATION