Vaillant auroSTOR VIH S GB 300/3 BES Installation And Maintenance Instructions Manual

Also see for auroSTOR VIH S GB 200/3 BES: Installation and maintenance instructions Installation and maintenance instructions Installation and maintenance instructions

Contents

8 Troubleshooting16 Installation and maintenance instructions auroSTOR 0020221298_028 Troubleshooting8.1 Detecting and rectifying faults▶ If problems occur whilst operating the product, checkcertain points with the aid of the table in the appendix.Detecting and rectifying faults (→ Page 17)8.2 Procuring spare partsThe original components of the product were also certifiedby the manufacturer as part of the declaration of conformity.If you use other, non-certified or unauthorised parts duringmaintenance or repair work, this may void the conformity ofthe product and it will therefore no longer comply with theapplicable standards.We strongly recommend that you use original spare partsfrom the manufacturer as this guarantees fault-free and safeoperation of the product. To receive information about theavailable original spare parts, contact the contact addressprovided on the reverse of these instructions.▶ If you require spare parts for maintenance or repairwork, use only the spare parts that are permitted for theproduct.9 Inspection and maintenance9.1 Observing inspection and maintenanceintervalsAdhere to the minimum inspection and maintenance inter-vals. The inspection may require maintenance to be carriedout earlier, depending on the results.Inspection and maintenance work – Overview (→ Page 17)The immersion heater can be removed in order to inspectthe inside of the cylinder.9.2 Draining the product1. Close the cold water draw-off valve.2. Secure a hose to the drain valve.3. Position the hose at a suitable outflow.4. Open the highest hot water valve in the system.5. Open the drain valve and drain the product completely.6. Close the hot water valve and the drain valve.7. Remove the hose.9.3 Checking the safety group's expansionrelief valve and the cylinder's expansionrelief valve1. Open all expansion relief valves by turning the plug.2. Check whether the water is flowing into the tundish.3. Check that the expansion relief valves are in the correctposition and then check the pressure.9.4 Checking the pre-charge pressure of theexpansion vessel1. Drain the product. (→ Page 16)2. Measure the pre-charge pressure of the expansion ves-sel at the vessel valve.Conditions: Pressure <0.3 MPa (0.3 bar)▶ Top up the expansion vessel in accordance with thestatic height of the heating installation, ideally with ni-trogen, otherwise with air.3. If water escapes from the valve of the expansion ves-sel, you must replace the expansion vessel.4. Fill and purge the product. (→ Page 15)10 Decommissioning the product▶ Switch off the heat generator.▶ Unplug the domestic hot water cylinder's mains plug.▶ Close the cold water stop cock.▶ Drain the product. (→ Page 16)▶ Remove the hydraulic connections and the temperaturesensor.▶ Remove the cables for the temperature sensor from theheat generator, controller or multi-functional module.11 Customer serviceTo ensure regular servicing, it is strongly recommendedthat arrangements are made for a Maintenance Agreement.Please contact Vaillant Service Solutions for further details:Telephone: 0330 100 3461