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EVS-EN 257:2022+A1:2023

Gaasiseadmete mehaanilised termostaadid

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Kehtiv alates 29.12.2023
Alusdokumendid
EN 257:2022+A1:2023
Tegevusala (ICS grupid)
27.060.20 Gaasipõletid
Direktiivid või määrused
puuduvad

Standardi ajalugu

Staatus
Kuupäev
Tüüp
Nimetus
29.12.2023
Põhitekst + muudatus
01.11.2022
Põhitekst
EN 13611:2019, Clause 1 applies with the following modification and addition:
Modification:
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”.
This document is applicable to thermostats with declared maximum inlet pressures up to and including 50 kPa and of nominal connection sizes up to and including DN 50 for use with one or more fuel gases.
Addition:
This document is applicable to thermostats controlling the gas flow directly or indirectly through an integral gas valve. This document applies to thermostats used with gas appliances which are not installed in the open air.
Thermostats dealt with in this document are intended for control functions.
This document is not applicable to:
a)  controls which use auxiliary energy (e.g. electrical energy supplied externally);
b)  an assessment of the control regarding Performance Level (PL) and Safety Integrity Level (SIL).
The 4th paragraph of EN 13611:2019, Clause 1 is removed.
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