prEN 489-1

District heating pipes - Bonded single and twin pipe systems for buried hot and coldwater networks - Part 1: Joint casing assemblies and thermal insulation for hot and cold-water networks with metal service pipes in accordance with EN 13941-series. prEN 489-1

Publication date:   Aug 20, 2026

Scope

This document specifies requirements and test methods for joint casing systems for single and twin pipes between adjacent factory-made pipe, and/or fitting and/or valve assemblies for buried heating and cooling water networks with rigid pipe systems with metal service pipes in accordance with EN 13941-1 [4] and EN 13941-2 [5] as well as rigid pipe systems with plastic service pipes according to series EN 17415 and flexible pipe systems with metal service pipes according to EN 15632-4 .
NOTE There are no differences in requirements for single and twin pipe joint casing systems.
For bedding materials other than those defined in 5.2.3 additional precautions are defined inEN 13941-2 [5].