Approved Work Item
ISO/AWI 18149-1
Hydronic heating appliances for solid biofuels — Part 1: General requirements
Reference number
ISO/AWI 18149-1
ISO/AWI 18149-1
Edition 1
© ISO 2026
Approved Work Item
Abstract
This document specifies the terminology, technical requirements, testing methods, and marking requirements for hydronic heating appliances designed for solid biofuels, both manually and automatically stoked, with a nominal heat output of up to 1500 kW. The document is applicable to the design, manufacture, testing of such appliances. This document does not cover: •Hydronic heating appliances with a nominal heat output exceeding 1500 kW; •Appliances designed for fuels other than solid biofuels; •Manual stoked straw bale boilers; and •Design and construction of external fuel storage and transportation devices prior to the safety devices of the boiler.
