Vaillant geoTHERM VWS Installation Instructions Manual

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Vaillant geoTHERM VWS Installation Instructions Manual Manual pdf 7 page image

7Installation instructions geoTHERM VWS 0020046310_01These different temperatures are produced in the coo-lant circuit by means of a compressor (2) and an expan-sion valve (4), which are situated between the evapora-tor and the condenser. The coolant flows in vapour formfrom the evaporator into the compressor, where it iscompressed. This causes the pressure and temperatureof the coolant vapour to rise sharply. The coolant thenflows through the condenser, where it releases its heatto the heating water by means of condensation. It flowsas a liquid to the expansion valve, where it expands sig-nificantly and in so doing loses much of its pressure andtemperature. This temperature is now lower than thebrine/water flowing through the evaporator. The coo-lant can thus take up more heat in the evaporator, tur-ning into vapour in the process and flowing to the com-pressor. The cycle starts again.If required, the electric auxiliary heating can be swit-ched in by means of the integrated controller.To prevent the formation of condensate in the interiorof the unit, the pipes of the heat source circuit and thecoolant circuit are insulated. If condensate forms, thiscollects in a pan (see Fig. 2.6, Item 11) and is led awayunder the unit. Drop formation under the unit is thuspossible.2.3 Design of the heat pumpThe Vaillant geoTHERM heat pump is available in thefollowing models. The heat pump are, above all, diffe-rent from each other in their output.Type name Heating output (kW)Brine water heat pumps (S0/W35)VWS 61/2 230 V 6.0VWS 81/2 230 V 8,1VWS 101/2 230 V 10.5Table 2.2 Type summaryYou can read the type designation of the heat pumpfrom the sticker (see Fig. 2.4, Item 1) on the pillar frame.The heat pump is designed to implement all currentelectrical supply tariffs.231Fig. 2.4 Front viewKey to Fig. 2.41 Label with heat pump type designation2 Operating panel3 vrnetDIALOG mounting plate (behind the pillar cladding)Description of the appliance 2