Vaillant ecoMAX 665 Installation And Maintenance Manual

Also see for ecoMAX 665: Instructions for use Installation and maintenance manual

Vaillant ecoMAX 665 Installation And Maintenance Manual Manual pdf 16 page image

16 Installation and maintenance manual ecoMAX 665 / 0020020159_034.8.1 Mains connectiona Caution!Supplying power to the wrong plug terminals ofthe Pro E system can destroy the electronics.Only connect the 230 Vac live supply to boilerterminal connections marked LNE.The rated voltage of the mains must be 230 V; at ratedvoltages above 253 V and under 190 V, damage may occur.The mains supply must be connected via a fixed connec-tion and a separator with a contact opening of at least3 mm (e.g. fuses, circuit breakers).4.8.2 Connecting controllersMounting is to be carried out as stated in the relevant instal-lation manual. The necessary connections to the boiler‘selectronics (e.g. when using external controllers, externalsensors or similar devices) are to be performed as follows:• Remove the front casing of the appliance and lowerthe electronics box (1) forward.• Unclip the back cover (2) of the electronic box fromits fixings (3) and lift it up (see fig. 4.9).• Pass the connecting cables of each of the componentsto be connected through the grommets (4) located onthe bottom of the appliance to the left.• Then insert the connecting cables (5) into the elec-tronics box and cut them to length (see fig. 4.9).• Strip the connecting cable by about 2-3 cm and barethe wires (see fig. 4.10).• Connect the connecting cables as shown by fig. 4.10/4.11to the corresponding ProE plugs or slots of the electronics.Vaillant controllers are intended to be plugged into thefront of the appliance without the need for additionalwiring. If a remote wall mounted controller is requiredthen the patress box provided can be used Additionalwiring will be required as described.a Caution!Do not connect 230 V mains to terminals 7, 8,or 9. The electronics could be destroyed by this!• If no room/clock thermostat is in place, provide a jum-per between terminals 3 and 4 if not already present.Remove the jumper if a room/clock thermostat is con-nected to terminals 3 and 4.• Close the rear cover of the electronics box and pressit in until you hear it click into place.• Lift the electronics box up and press it by the two clipson its left and right against the lateral appliance cas-ings until you hear the clips click into place.• Attach the front casing.• In order to attain pump mode I (continuous pump) forthe multicircuit controller (e.g. VRC 630), increase thepump over-run time to 15-20 minutes (diagnosis pointd.1, see chapter 6.2).43Fig. 4.11 Opening the rear of the electronics box4.8.3 Connecting accessories and external systemcomponentsL N230V5Fig. 4.12 Example of cable insertionThe Vaillant ProE plug in terminal system facilitatesa quick and trouble-free connection of accessories andexternal system components to the appliance electron-ics. Proceed with the wiring up as follows:• Take off the front casing of the appliance and lift theelectronics box forward.• Unclip the back cover of the electronics box (1) fromits fixings (2) and lift it up.4 Installation