Vaillant ecoMAX pro Instructions For Use Installation And Servicing

Also see for ecoMAX pro SERIES: Instructions for use installation and servicing Instructions for use installation and servicing

Vaillant ecoMAX pro Instructions For Use Installation And Servicing Manual pdf 19 page image

Electrical Connections 12Instructions for Installation and Servicing ecoMAX pro 19Disconnect and remove the test cable from the terminalstrip and discard.Connect both the mains supply and switched live fromthe external controls (room thermostat and, if applica-ble, frost thermostat) into the marked terminals asshown in Figs. 12.2 and 15.1.Fig 12.2Connect the pump supply into the marked pump termi-nals as shown in Figs.12.2 and 15.1.(Note: the boiler incorporates a pump overun thermost-at. Only feed the pump from the marked terminals in theterminal box on the boiler, not from a separate supply).Observe all terminal markings and colour codes shownin Fig. 15.1.Ensure that all flexible cords are routed through thestrain relief cable glands on the inlet of the terminal box.Refit the terminal box to the underside of the boilerusing the two retaining screws.12.2 Electrical connections – testingCarry out preliminary electrical system checks as below;1. Test insulation resistance to earth of mains cable.2. Test the earth continuity and short circuit of cables.3. Test the polarity of the mains.12 Electrical ConnectionsWarning!This boiler must be earthed.All system components must be of an approved type.Electrical components have been tested to meet theequivalent requirement of the BEAB.Connection of the whole electrical supply must bethrough a common isolator.Isolation should preferably be by a double pole switchedfused spur box having a minimum contact separation of3mm on each pole. The fused spur box should be readi-ly accessible and preferably adjacent to the boiler. Itshould be identified as to its use. A fused three pin plugand shuttered socket outlet may be used instead of afused spur box provided that:a) They are not used in a room containing a fixed bathor shower.b) Both the plug and socket comply with the currentissue of BS1363.Do not interrupt the mains supply with a time switch orprogrammer.Warning!This appliance must be wired in accordance withthese instructions. Any fault arising fromincorrect wiring cannot be put right under theterms of the Vaillant guarantee.12.1 Mains, external controls and pump connections(mains voltage)ecoMAX pro boilers are fitted with a terminal box loca-ted at the base of the boiler into which all connectionsare made.To gain access to the terminal box remove the two retai-ning screws indicated in Fig. 12.1 and carefully lower toreveal the terminal strip inside.Fig. 12.1