Page 49 - 20250602 EEA QM Edition 6.0

Quality Requirements Edition 6.0 European Enamel Association

7.12. QUALITY REQUIREMENTS FOR PORCELAIN AND VITREOUS ENAMELLED HOT WATER TANKS (BOILERS)

7.12.1 Application area

These requirements are applicable for enamelled steel hot water stock tanks (boilers) in which water is heated that is also meant for consumption, with an operating
principle according to CEE publication 11, part II, section E (2nd edition, November 1996), and that may be equipped or not with a magnesium anode.

GENERAL: THE PRODUCTS MEANT FROM THIS GROUP NEED TO MEET THE REQUIREMENTS AS DESCRIBED IN THE DIN 4753

7.12.2 Test methods

Item Name Applicable standards
steel quality EN 10025, EN 10204, EN 10209, DIN 50049, DIN 4753
general requirements – construction DIN 4753
general requirements – enamelling DIN 4753
4.3 measurement of the thickness of the enamel coating EN ISO 2178, EN ISO 2360, EN ISO 1463
4.4 determination of the resistance to chemical corrosion by citric acid or other acids EN ISO 28706-1/9
at room temperature
4.8 specification and determination of the release of toxic elements UBA-guideline + national laws + DIN 4753-3
4.9 determination of the impact resistance EN ISO 4532
4.10 determination of the adherence of the enamel to the substrate EN 10209 Annex C
4.30 identification of defects for hot water tanks (non-destructive - visual only) DIN 4753-3; BS 3831 Appendix A; IVE Atlas of Defects
4.31 determination and measurement of protective current requirements for hot water DIN 4753-3
4.32 determination and control of release elements for hot water tanks UBA-guideline + national laws (see also clause 4.8) + DIN 4753-3
4.37 determination of the resistance to long-term chemical corrosion exposure to boiling water EN ISO 28706-2/6, DIN 4753
4.40 determination of thermal shock resistance of enamelled articles into water EEA Specification 8.6.4

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