Vaillant geoTHERM VWS Installation Instructions Manual

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Vaillant geoTHERM VWS Installation Instructions Manual Manual pdf 20 page image

Installation instructions geoTHERM VWS 0020046310_01204.12.1 Assembly of the heating systema Caution!Risk of damage!In order to be able to clear any possibleoverpressure, the heat pump must beconnected to an expansion vessel and anexpansion relief valve, at least DN 20with a maximum opening pressure of3 bar (not supplied).H Danger!Risk of scalding!The blow-off line on the expansion reliefvalve must be the size of the valve'soutlet aperture and be installed in afrost-free environment. It must remainconstantly open. It must be fitted insuch a way that persons are not endan-gered by hot water or steam when itblows off.We recommend the installation of aVaillant safety group and a tundish.• Fit the heating flow and return lines with all compo-nents.• Insulate all the pipes.4.12.2 Assembly, brine circuit• Install the heat source pipes and all their associatedcomponents.4961496158576542a5858K 33Fig. 4.13 VWS heat source circuitKey to Fig. 4.1333 Air separator/Dirt filter42a Expansion relief valve49 Flow rate adjuster57 Brine expansion tank58 Filling and drainage tap61 Brine circuit65 Brine collecting tankK Collector42a57 651Fig. 4.14 Fitting the brine expansion tankh Note!The brine expansion tank has a capacityof approx. 6 litres and is thus adequatefor brine circuits up to a maximum of1900 litres.a Caution!Material damage resulting from escapingbrine!The screw couplings on the brine expan-sion tank must be sealed with hemp.Sealing with, e.g., teflon tape can lead toleaks in the brine circuit.• Fit the bracket for the brine expansion tank to thewall using the wall plug and the screw.• Unfasten the pre-assembled connection pieces fromthe brine expansion tank (57).• Wind hemp into the outer threads of the connectionpieces.• Fit the first connection piece to the 3 bar expansionrelief valve (42a) enclosed with the heat pump.• Using the second connection piece, fit the brine ex-pansion tank (57) from the accessory kit to the pipe(1) running from the heat source to the heat pump.• Fix the brine expansion tank with the bracket.• Fit the connection piece with the expansion reliefvalve to the brine expansion tank.• Fit the brine collecting tank (65) to the expansion reli-ef valve (42a) at zero pressure.The brine collecting tank must not be completelyclosed, as otherwise the functioning of the expansionrelief valve is not guaranteed.• Provide all the pipes with vapour-proof thermal insula-tion. The accessory kit contains the insulating matprovided for the thermal insulation of the connectionplate.4 Assembly and installation