Heating boilers - Part 4: Heating boilers with forced drought burners - Special requirements for boilers with forced draught oil burners with outputs up to 70 kW and maximum operating pressure of 3 bar - Terminology, special requirements, testing and

This document establishes specific technical requirements for heating boilers equipped with forced-draft burners, utilizing liquid fuels with power ratings not exceeding 70 kW and a maximum working pressure of 3 bar. Issued by the national standards body of Latvia in alignment with European harmonization efforts, the text defines essential terminology, core safety specifications, test procedures, and identification marks necessary for compliance. The scope covers the design and manufacturing phases, ensuring operational safety and efficiency under defined conditions. Key provisions address the interaction between the burner system and the boiler vessel, emphasizing pressure management and fuel combustion stability. Detailed inspection methods are outlined to verify adherence to the established criteria, while labeling guidelines ensure clear communication of technical specifications on the final equipment. The framework supports uniformity in the assessment of such appliances across the regional market, facilitating trade and safety assurance without compromising the integrity of the manufacturing process. All referenced parameters are designed to maintain consistent performance standards for residential and commercial heating applications within the specified operational limits.