Vaillant geoTHERM VWS Installation Instructions Manual

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Vaillant geoTHERM VWS Installation Instructions Manual Manual pdf 71 page image

71Installation instructions geoTHERM VWS/VWW 0020051574_019 Inspection and maintenance9.1 General notesIn contrast to heaters based on fossil fuels, no expen-sive maintenance work is necessary for theVaillant geoTHERM heat pump. However an annual in-spection of the system by a specialist is a prerequisitefor continuing operational safety, reliability and a longworking life.To prevent damage to the heat pump during the con-struction phase, it must be protected from dust, dirt andmoisture.d Danger!Inspection and repairs may be carriedout only by an approved heating installa-tion company.Inspections/Maintenance work not car-ried out can result in damage to proper-ty and personal injury.e Danger!Risk of fatal electric shock from touch-ing live connections! Before commencingwork on the heat pump, disconnect thepower supply (circuit breaker) and se-cure it against being switched on againinadvertently.H Danger!Risk of scalding!Pipes and components of the of the heatpump system may become extremelyhot during operation. Allow the systemto cool down sufficiently before startingthe inspection and repair work.a Danger!Danger of poisoning!Combustion of the coolant produces cya-nide gas. Smoking is prohibited whencarrying out inspection and repair work.Do not carry out work on the coolant cir-cuit without emptying it beforehand. Sol-dering work on the coolant circuit mayonly be carried out by expert techniciansin a nitrogen atmosphere.a Danger!Risk of damage!Only use copper pipes according toEN 12735-1 when working on the coolantcircuit. Only use servicing devices suchas pressure gauges, hoses etc. that aresuitable for R 407 C coolant.Only genuine Vaillant replacement parts may be usedfor maintenance work, to ensure the long-term workingorder of all functions of your Vaillant appliance and toprevent changes to the approved production standard.Any spare parts which might be required are listed inthe relevant current spare parts catalogues.Information can be obtained from Vaillant CustomerService Centres.9.2 Inspection work to be performedThe heat pump is engineered in such a way that only afew inspection tasks need to be carried out:VWS and VWW:According to Article 3 of (EC) Ordinance No. 842/2006of the European Parliament and the Council of17th May 2006 regarding specific fluorinated green-house gases, the operator of heat pumps with hermeti-cally-sealed systems containing more than 6 kg of fluor-inated greenhouse gases is obliged to have the leak-tightness of the system checked by qualified personnelonce a year.• Leak-tightness test of coolant circuit for unit typesVWS/VWW 380/2 (6.7 kg coolant) and unit typesVWS/VWW 460/2 (8.6 kg coolant).• Visual inspection of all components for possible corro-sion, wear or fluid leaks.VWS only:• Manually actuate the safety groups in the brine andheating circuits at regular intervals.• Check the dirt filter in the brine circuit regularly.• Check the pressures in the brine and heating circuitsregularly.VWW only:• Manually actuate the safety groups in the heating cir-cuit at regular intervals.• Check the dirt filter in the water circuit regularly.• Check the pressure in the heating circuit regularly.9.3 Servicing and repairsThe Vaillant geoTHERM heat pump requires no servicingwork.To carry out repairs to defective parts on the inside ofthe heat pump:• Remove the heat pump cladding sections in the re-verse order to that described in Chap. 6.10.Inspection and maintenance 9