SR EN 257:2011

Mechanical thermostats for gas-burning appliances

This European Standard specifies the safety, construction and performance requirements for mechanical thermostats intended for use with gas appliances and similar use, hereafter referred to as ‘thermostats’. This European Standard applies to thermostats with declared maximum inlet pressures up to and including 50 kPa (500 mbar) of nominal connection sizes up to and including DN 50 for use with one or more fuel gases in accordance with EN 437. This European Standard applies to thermostats controlling the gas flow directly or indirectly through an integral gas valve, and which do not require external electrical energy for their operation. This European Standard only applies to thermostats used with gas appliances which are not installed in the open air. Thermostats dealt with in this European Standard are intended for control functions.

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General information

Status : Withdrawn
Approval date : 3/31/2011
Withdrawal date : 11/29/2022
Number of pages : 36
ICS : 27.060.20 Gas fuel burners
Technical Committee : 305 - Household appliances using gaseous fuels

Relations with other standards:

Replaces SR EN 257:2002/A1:2002
Replaces SR EN 257:2002
Normative reference SR EN 13611:2008
Replaced by SR EN 257:2022