3Installation instructions 0020230764_00Notes on the documentationen2a a1.3 General safety information1.3.1 Risk caused by inadequatequalificationsApplicability: Not for RussiaThe following work must only be carried out by com-petent persons who are sufficiently qualified to doso:Applicability: RussiaThe following work must only be carried out byVaillant-certified competent persons who are suffi-ciently qualified to do so:- Set-up- Dismantling- Installation- Start-up- Inspection and maintenance- Repair- Decommissioning> Observe all instructions that are included with theproduct.> Proceed in accordance with the current technol-ogy.> Observe all applicable directives, standards, lawsand other regulations.1.3.2 Risk of being burned or scalded byhot components> Only carry out work on these components oncethey have cooled down.1.3.3 Risk of material damage caused byfrost> Do not install the product in rooms prone to frost.1.3.4 Risk of material damage caused byusing an unsuitable tool> Use the correct tool to tighten or loosen screwconnections.1.3.5 Regulations (directives, laws,standards)> Observe the national regulations, standards,guidelines and laws.2 Notes on the documentation2.1 Observing other applicabledocuments> You must observe all the operating and installa-tion instructions included with the system compo-nents.2.2 Storing documents> Pass these instructions and all other applicabledocuments on to the system operator.2.3 Validity of the instructionsThese instructions apply only to:- Safety group: 305827