Vaillant geoTHERM VWS Installation Instructions Manual

Also see for geoTHERM VWS: Operating manual Installation instructions Operating manual

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Vaillant geoTHERM VWS Installation Instructions Manual Manual pdf 24 page image

Installation instructions geoTHERM VWS/VWW 0020051574_01246 Electrical installation6.1 Safety and installation informatione Danger!Risk of electric shock!Always switch off the power supply be-fore carrying out any electrical installa-tion work. Make sure that it is securedagainst inadvertent switching on again.a Caution!Risk of damage!The electrical connection must beequipped with a customer-supplied isola-tion device having a contact separationof at least 3 mm on all lines (e.g. a lineprotection switch).It makes sense to fit this isolation device in the immedi-ate vicinity of the heat pump.a Caution!Risk of damage!The electrical installation may only beundertaken by an authorised engineer.a Caution!Risk of short circuits!When connecting conductors carrying230 V to the ProE plug, do not strip theinsulation back by more than 30 mm forsafety reasons.If you strip back by more than this,there is a risk of short circuits to thePCB if the conductors are not correctlyattached in the plug.a Caution!Risk of malfunction!The lines for the outside temperaturesensor and the room thermostat carrysmall, weak currents. Interference fromthe environment can have an effect onthe sensor lines and transmit incorrectinformation to the heat pump controller,and for this reason the sensor linesmust be run absolutely correctly.Low current lines must be run at an ade-quate distance from high current lines. Iflow and high current lines are run in par-allel, a minimum distance of 25 cm ap-plies for lengths greater than 10 m.At start-up, the controller automatically checks for thecorrect phase sequence. Switch two phases over if thereis an error message.Furthermore, take note:- For power, connect the heat pump to a 400 V three-phase mains supply with one neutral and one earthconductor. Fuse this connection as specified in thetechnical data.- Install the heat pump with a fixed mains connection.- The required conductor cross sections must be deter-mined by a qualified technician, using the values spec-ified in the technical data for the maximum rated out-put. In any case, take into account the on-site installa-tion conditions.- If the local power company stipulates that the heatpump should be controlled by a blocking signal, fit anappropriate contact switch, as specified by the powercompany, and connect it to the heat pump with a two-core cable.6.2 Regulations pertaining to electricalinstallationsThe maximum sensor cable length of 50 m may not beexceeded.Where lengths are greater than 10 m, route the connec-tion cables carrying 230 V/400 V separately from thesensor or bus cables.Do not use free terminals on the appliance as supportterminals for other wiring.6 Electrical installation