5Instructions for installation and servicing ecoTEC / 839592_09increase the flexibility. If desired, an inhibitor may beused in the system. Guidance on the use of inhibitors iscontained in these instructions.All boilers have a built in diagnostic system which indi-cates the operational status of the boiler. This featureprovides key information to aid commissioning and faultfinding. The data badge is fitted to the underside of theboiler. See text of General Requirements for installationrequirements or notes.The Valliant ecoTEC are state-of-the-art applianceswhich have been constructed in accordance with recog-nised safety regulations. Nevertheless, danger to the lifeand limb of the user or third parties can still occur orthe appliance or other material assets be damaged inthe event of improper use.The appliance is designed to generate heat for connect-ing to hot water central heating systems and for instan-taneous hot water supply (ecoTEC combination boilersonly). Any other use or extended use is considered to beuse other than intended. The manufacturer/supplier isnot liable for any resulting damage.Intended use includes the observance of the operatingand installation manual and the adherence to the inspec-tion and maintenance conditions.Danger!Any incorrect use is forbidden.The appliances must be installed by a competent person,who is responsible for adhering to the existing regula-tions, rules and guidelines.1.4 CE markingThe CE marking shows that the appliances complywith the basic requirements of the following direc-tives:- Gas appliances directive (90/396/EEC)- Electromagnetic compatibility directive with thresholdclass B (89/336/EEC)- Low voltage directive (73/23/EEC)The appliances satisfy the basic requirements of the effi-ciency directive (92/42/EEC) as condensing appliance.- The Gas Applaince (Safety) Regulations 1992- The boiler (Efficiency) Regulations 1993Vaillant Ltd. supports the Benchmark initiative.At the rear of this guide, you will find aBenchmark gas boiler commissioning checklist.It is very important that this is completed cor-rectly at the time of installation, commission-ing and hand over to the user.1.5 Gas council numbersApplaince Gas council numbersecoTEC pro 24 47-044-36ecoTEC pro 28 47-044-30ecoTEC plus 824 47-044-31ecoTEC plus 831 47-044-32ecoTEC plus 831 Propane 47-044-34ecoTEC plus 837 47-044-33ecoTEC plus 612 41-044-44ecoTEC plus 615 41-044-45ecoTEC plus 618 41-044-46ecoTEC plus 618 Propane 41-044-51ecoTEC plus 624 41-044-47ecoTEC plus 630 41-044-48ecoTEC plus 630 Propane 41-044-50ecoTEC plus 637 41-044-49Table 1.1 Gas council numbersIntroduction 1