NS-EN 257:2022+A1:2023
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01-12-2023
EN 13611:2019, Clause 1 applies with the following modificåtion and addition: Modificåtion: The 1st paragraph of EN 13611:2019, Clause 1 is replaced by: This document specifies the safety, design, construction, and performance requirements and testing for mechanical thermostats intended for use with gas appliances and similar use, hereafter referred to as “thermostats”.
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