Ideal Boilers Classic RS 300 Installation & Servicing Manual

Ideal Boilers Classic RS 300 Installation & Servicing Manual Manual pdf 15 page image

15Classic RS - Installation & ServicingINSTALLATIONExternal wiring must be in accordance with the current I.E.E.(BS 7671) Wiring Regulations. For Ireland reference should be madeto the current ETCI rules for electrical installations.The wiring diagrams illustrated in Frames 21-24 cover the systemsmost likely to be fitted to this appliance.For wiring external controls to the Classic RS boiler, reference shouldbe made to the system wiring diagrams supplied by the relevantmanufacturer, in conjunction with the wiring diagrams shown in Frames21-24.Difficulty in wiring should not arise, providing the following directionsare observed:1. Controls that switch the system ON and 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. a frost thermostat,MUST be wired into the mains lead, in parallel, with the control(s)to be overridden. Refer to Frame 24.19 EXTERNAL CONTROLS3. Controls that switch the circulation pump only ON and OFF, e.g. aroom thermostat, MUST be wired in series with the pump in the livepump lead.4. If a proprietary system is used, follow the instructions supplied bythe manufacturer.5. SYSTEM DESIGNS FEATURING CONTROLS OR WIRINGARRANGEMENTS WHICH ALLOW THE BOILER TO FIRE WHEN THEREIS NO PUMPED OR GRAVITY CIRCULATION TAKING PLACE SHOULDNOT BE FITTED.Advice on required modifications to the wiring may be obtained from thecomponent manufacturers.Notes1. Connections 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 the house, butwhere it can sense heat from the system.WARNING. 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 than 0.75mm2(24 x 0.2mm) to BS. 6500 Table 16 Wiring Regulations and local regulations.For IE reference should be made to the current ETCI rules for electricalinstallations.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") contactseparation in both poles or a plug and socket, serving only the boiler andsystem controls. The means of isolation must be accessible to the userafter installation.Flow wiring diagramNote.If an optional programmer is to be fitted refer tothe instructions provided with the kit and Frame 19.1. Remove the control box securing screws (M4pozi). Pull the box forward to disengage.Refer to Frame 39.2. Route the mains cable through the grommetin the plate of the control box.3. Remove the screw and release the mainsconnection plate. Unscrew the cable clampscrews and remove the clamp.4. Connect the mains cable wires to theterminal strip.5. Replace the control box and fasten to thecontrols support.y r or wOff On Off OnClas 2109Programmer unit O/heat thermostat(if fitted)bN LConnectto8 Pin connector tosytem controlsALL EARTHS must be connected(Not all earths are shown for clarity)Boilerbk bkCombined spark &sending electrodey/gbr bbkPilot gasMains gasLBLBL brOptional Programmer KitbControlthermostatL NCGV 1GV 2PCB 25NCNOFor details of PCB wiring refer to Frame 20A MINIMUM gas pressure of 20 mbar (8 in.w.g.) MUST be available at the boilerinlet, with the boiler operating.The main gas cock is on the left hand side of the gas control valve, as shown.To facilitate connection the gas cock may removed from the gas control valve.1. Remove the plastic plugs from theflow and return pipes.2. Make all water connections and checkfor water soundness.18 ELECTRICAL CONNECTIONS16 GAS CONNECTION 17 WATER CONNECTIONSLEGENDb bluebk blackw whitey/g yellow/greenbr browngy greyor orangepk pinkr redv violetINSTALLATION