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Resumen del manual
9. Secure both phials into the thermostat pocket in the flow header, using the spring clip. 10. Fit the earth connections from the terminal plug-in connections to the appropriate earth posts on the back of the control box. Connect the earth lead prefitted to the control box back panel to the threaded hole in the casing support frame. 11. Fit the casing upper front panel with its location buttons in the slots and push down to locate. Fasten at the bottom, using the No.8 screws. 12. Fit the casing lower front panel by locating its slots over the shoulder screws in the side panels and pushing down to locate. Earth connections GV1 & GV2 & o/heat thermostat earths Con 1917 10 Spring clip Overheat thermostat capillary Control thermostat lead Thermostat pocket 9 Con 1916 INSTALLATION INSTALLATION 14 ELECTRICAL CONNECTIONS To gain access to the inside of the control box remove the 2 M4 screws, lift up the plastic front panel and lower. Connection must be made in a way that allows complete isolation of the electrical supply - such as a double pole switch, having a 3mm (1/8") contact separation in both poles, or a plug and socket serving only the boiler and system controls. The means of isolation must be accessible to the user after installation. This should serve only the boiler, together with its controls and pumps. The unswitched live supply, which the boiler requires to allow the pump overrun facility to operate, should be controlled by the above switched/fused supply, but should connect from there directly to the boiler and not via any automatic time or temperature controls. The switched live supply should be subject to control by time and temperature controls in the usual way. The controls incorporate a pump overrun facility, which is necessary to dissipate residual heat on plant shutdown. It is essential therefore that the main pump (and shunt pump if fitted) is wired to the pump terminals marked L2, N and Earth on the plug-in terminal strip on the top box at the rear of the control box. The main supply to the boiler must be wired to the boiler terminals L1, N and Earth on the plug-in terminal strip. This live connection must be UNSWITCHED, that is a supply not interrupted by any automatic temperature or time control, to enable the pump overrun (and the frost protection facility) to operate. Failure to operate this procedure will result in nuisance overheat thermostat operation. The internal wiring of the boiler control box is shown in Frame 15. Wiring should be in four core PVC insulated cable, not less than 0.75mm2 (24/0.2mm). All fuses must be ASTA approved to BS. 1362. The length of the conductor between the cord anchorage and the terminals must be such that the current carrying conductors become taut before the earthing conductor, if the cable or cord slips out of the cord anchorage. The boiler can be controlled either by volt-free external contacts connected between terminals X1 and X2 or by a switched live supply brought to X2 (after removal of the factory-fitted link between X1 and X2), accompanied in each case by a permanent live supply to terminal L1. If a separate frost thermostat is fitted it must be wired across the time switch contacts and if frost is likely the system should be turned off using the time switch settings -all other controls including the boiler thermostat knob should be in the normal running position. The earth connections MUST NEVER be omitted. Wire the earths as shown in Frame 13. All wiring between entry at the rear of the boiler and the connection box must be secured neatly under the cable clips provided. Wiring must never be allowed to come into contact with the hot boiler body. If a flow switch is fitted, it should be wired between F1 and F2 on the terminal plug-in connection on the bottom box at the rear of the control box. Do not wire these connections in conduit up to the boiler as this will make it impossible to remove the control box for servicing or maintenance. Finally, fit the casing top panel and push down to locate. Con 1907.. INSTALLATION Concord CXSi/H -Installation & Servicing INSTALLATION INSTALLATION 15 INTERNAL WIRING LEGEND b blue br brown y yellow y/g yellow/green v violet bk black r red w white or orange pk pink TEMPERATURE CONTROL ON/OFF SWITCH T7335B1051THERMISTOR Note: Diagrammatic VOLT-FREE BOARD (OPTION)missing pin on boardblanking pin in female halfN ON ON O/H O/HL/O L/O S4561B1047W4115AIC1020 GV2HIGH BOILER ON VOLT FREE CONTACTS L4NL3NN/O DET OVERHEAT THERMOSTAT2 3 PINK PUMPFACTORY FITTED LINKS EXTERNALCONTROLSTTB N L2T1 T1L1 X2 N SUPPLY F1C F2X1 LOCKOUT OVERHEAT L5 1 N BR BR BR B Y/G Y/G N/C GV1LOW WHITE RED BR DETECTION ELECTRODE SPARK GEN CONTACT REMOVED AND FITTED TO MATING HALF 2 X VIOLET 2 X RED 2 X YELLOW DETECTION LEAD YELLOW YELLOW RED RED RED RED BLACK WHITE ORANGE BK GREY BLUE ORANGE ORANGE VIOLET VIOLETYELLOWREDBLUE WHITE BLUE WHITE BROWN BLUE ORANGE YELLOW BLUE PINK RESETBBKBBRBBRBBR L/OO/H ON NF HI HD PL PLN PUMP SL HDPL L/OHL1 HL...
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