SIST EN 1859:2009/kFprA1:2012

Overview - EN 1859:2009/FprA1 (Chimneys - Metal chimneys - Test methods)

EN 1859:2009/FprA1 is a CEN draft amendment to the European standard EN 1859:2009 that specifies test methods for metal chimney products. Prepared by Technical Committee CEN/TC 166 (secretariat ASI), the FprA1 text clarifies normative referencing and adds specific test details and figures for temperature and weight measurement. The amendment was issued in English/French/German and is intended for adoption by CEN members; it was prepared under a mandate from the European Commission and EFTA.

Key topics and technical requirements

• Scope: Describes test methods applicable to metal chimneys and related fittings (ICS 91.060.40).
• Normative references: Revised wording clarifies that dated references apply as cited and undated references use the latest edition (including amendments).
• Weight measurement: Adds requirements to determine the increase in weight of fittings to an accuracy of ±5 g, and to record the increase in weight of sections and fittings during tests.
• Temperature measurement for insulated penetrations: Specifies additional thermocouple locations for insulated penetrations without enclosure in Zone B: a row of five thermocouples placed 300 mm above the first-floor penetration floor, spaced 50 mm ± 2.0 mm, beginning 100 mm ± 2.0 mm from the corner.
• Figures and test assembly clarity: Adds/renumbers figures (E.2 → E.3), inserts a new Figure E.2 showing surface temperature locations, and requires figure annotations such as "Dimensions in millimetres". Example test assembly configurations are described for flue gas, surface and ambient temperatures.

Practical applications - who uses this standard

• Chimney and flue manufacturers: For type testing and verification of metal chimney systems and components.
• Test laboratories and certification bodies: To perform repeatable test procedures, record weight changes and temperature distributions, and support product certification.
• Product designers and R&D teams: To validate performance of insulated penetrations, fittings and assemblies under standardized conditions.
• Regulators and specifiers: To reference harmonized test methods in procurement, safety assessments and compliance documentation.
• Installers and inspectors: To understand test-based performance limits and guidance derived from standardized tests.

Related standards and context

• EN 1859:2009/FprA1 complements the family of CEN chimney and flue standards by specifying test methods rather than performance criteria. Users should consult other CEN chimney standards for classification, performance requirements and installation rules.

Keywords: EN 1859, metal chimneys, test methods, CEN, chimney testing, thermocouples, insulated penetrations, weight measurement, product certification.