Vaillant geoTHERM VWS Installation Instructions Manual

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

Contents

Vaillant geoTHERM VWS Installation Instructions Manual Manual pdf 21 page image

21Installation instructions geoTHERM VWS 0020046310_014.13 Fitting the VRC DCF outside temperaturesensorFit the sensor in accordance with the enclosed installati-on manual.4.14 Fitting the VR 90 remote control unitIf you install several heating circuits, you can connect aseparate VR 90 remote control unit for each of the firstsix circuits. It allows the operating mode and targetroom temperature to be set, and takes into account theactual room temperature measured by the built-in roomsensor, if necessary.It is also possible to adjust the parameters for the asso-ciated heating circuit (timer programme, heating curveetc.) and to select the special functions (party, etc.).In addition, it is possible to query the heating circuit andto display service and fault messages.For assembly of the VR 90 remote control unit, see itsenclosed installation instructions. Regarding installationsee Chapter 6.8.1.4.15 Installing the VR 60 mixer moduleWith the mixer module, you can expand the control sys-tem of the heating installation by two mixer circuits.You can connect a maximum of six mixer modules.A unique bus address is set on the mixer module bymeans of a rotary switch. The setting of the heatingprogramme and all the required parameters is carriedout from the operating console. All heating circuit con-nections (sensors and pumps) are made directly on themixer module using a ProE plug.For assembly of the VR 60 mixer module, see its enc-losed installation instructions. Regarding installation seeChapter 6.8.2.5 Filling the heating and heat sourcesystemsThe heating circuit and the brine circuit must be filledbefore the heat pump can be put into operation.h Note!The heat pump cladding sections areonly fitted after the filling and subse-quent bleeding of the heating circuit.5.1 Filling the heating circuita Caution!Malfunction!Fill the heating circuit via the integratedfilling and draining valve, so that the he-ating circuit is completely bled.If there is a DHW cylinder connected,make sure that the 3-way valve is in thecentre position.• If there is a DHW cylinder connected, set the 3-wayvalve (see Fig. 2.6, Item 16) to the centre position.• Open all the thermostatic valves in the heating sys-tem.• Connect a filling hose to a water tap.• Attach the free end of the filling hose to the fillingvalve (see Fig. 2.6, Item 8).• Open the filling valve.• Turn the water tap on slowly and fill with water untilthe pressure gauge indicates a system pressure of ap-prox. 1.5 bar.• Close the filling valve and detach the hose.• Bleed the system again at the points provided.• Re-check the water pressure in the system (repeat thefilling process if necessary).5.2 Filling the brine circuitThe brine fluid consists of water mixed with a heattransfer fluid concentrate. As an additive we recom-mend propylene glycol (alternative: ethylene glycol)with corrosion-inhibiting additives. A DN 40 collectorhose has a capacity of approx. 1 litre per continuousmetre.The brine fluids that may be used differ greatly from re-gion to region. Please find out about this from the aut-horities responsible.Only the following brine media are authorised by Vail-lant for operation of the heat pump:– max. 30 % ethylene glycol/water– max. 33 % propylene glycol/water– potassium carbonate/water– max. 60 % ethanol/waterAssembly and installation 4Filling the heating and heat source systems 5