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EN 257:2010

Mechanical thermostats for gas-burning appliances

Oct 19, 2010

General information

90.93 Standard confirmed   Jan 19, 2015

CEN

CEN/TC 58 Safety and control devices for burners and appliances burning gaseous or liquid fuels

European Norm

27.060.20   Gas fuel burners

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Scope

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.

Related directives

Directives related to this standards.

90/396/EEC

Appliances burning gaseous fuels

Harmonized
2009/142/EC

Appliances burning gaseous fuels

Harmonized

Life cycle

PREVIOUSLY

Replaces
EN 257:1992

Replaces
EN 257:1992/A1:1996

NOW

PUBLISHED
EN 257:2010
90.93 Standard confirmed
Jan 19, 2015

REVISED BY

IN_DEVELOPMENT
FprEN 257