Vaillant ecoTEC plus SERIES Installation And Maintenance Instructions Manual

Also see for ecoTEC plus 612: Instructions for use Instructions for installation and servicing Instructions for use Installation and maintenance manual Instructions for installation and servicing

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Vaillant ecoTEC plus SERIES Installation And Maintenance Instructions Manual Manual pdf 30 page image

Electrical installation30 Installation and maintenance instructions ecoTEC plus 0020116700_0188.4.2 Connecting controllers to the electronicsystemb Caution.Risk of damage caused by incorrectinstallation.Connecting wires that have been strippedtoo far can cause short circuits and damagethe electronics if a strand accidentallycomes loose.> Only strip the outer sheathing of flexiblecables for a maximum of 3 cm to preventshort circuits.> Lay the lines correctly.> Use strain reliefs.b Caution.Risk of damage from incorrect installa-tion.A mains voltage at the incorrect plug termi-nals on the ProE system can destroy theelectronics.> Do not connect a mains voltage to theeBUS terminals (+/-).i Make sure that the conductors are securely fas-tened to the plug terminals of the ProE plug.> Open the electronics box (¬ section 8.2).> Lead the supply lines of the components to be connected(e.g. external controllers, external sensors) through theleft cable duct (¬ fig. 8.1, pos. 4) on the underside of theboiler.> Use the strain reliefs (1) provided.> Shorten the supply lines as necessary.> Only strip the outer sheathing of the supply lines for amaximum of 3 cm.> Ensure inner conductor insulation is not damaged duringstripping of outer sheathing.> Only strip inner conductors sufficient to make goodsound connections.> Fit the stripped ends of the conductors with crimp pinterminals to ensure a secure connection free from loosestrands to prevent short circuits.> Connect the ProE plug to the supply lines of the control-ler using a screwdriver.> Insert the ProE plug into the associated PCB slot(¬ figs. 8.3 and 8.4).> Lay the lines correctly.> Secure the cable in the electronics box using the strainreliefs.> If you do not connect a room/timer thermostat to theboiler, then bridge the input RT 24 V, if no bridge exists.> If you connect a room/timer thermostat to the boiler,then remove the bridge at input RT 24 V, if a bridgeexists.> If you connect a weather compensator or room tempera-ture controller via eBUS, then bridge input RT 24 V, if nobridge exists.> Close the electronics box (¬ section 8.1).> In order to achieve pump operating mode "Comfort"(continuously running pump) for multi-circuit controllers,change diagnosis code D.018 Pump operating mode from"Eco" (intermittent pump) to "Comfort" (¬ section 11.1.2).i Please note that the bridge at the ProE plug(Burner off) must be removed when connectinga maximum thermostat (contact thermostat) forunderfloor heating.8.5 Connecting additional componentsb Caution.Risk of damage caused by incorrectinstallation.Connecting wires that have been strippedtoo far can cause short circuits and damagethe electronics if a strand accidentallycomes loose.> Only strip the outer sheathing of flexiblecables for a maximum of 3 cm to preventshort circuits.> Lay the lines correctly.> Use strain reliefs.You can actuate an additional component with the aid ofthe auxiliary relay that is installed in the ecoTEC plus (onlyecoTEC 637/837), and two other components with the multi-functional module.The following components can be actuated:– Circulation pump– External pump– Cylinder charging pump– Extractor hood– External solenoid valve– External fault signal– Solar pump (not active)– eBUS remote control (not active)– Legionella protection pump (not active)– Solar valve (not active)8.5.1 Connecting the auxiliary relay (greyconnector on PCB) (only ecoTEC 637/837)i You can connect the additional component tothe integrated auxiliary relay using the grey plugon the PCB.> Perform the wiring in the same way as in ¬ section 8.4.