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Norm
ÖNORM EN 257
Issue date: 1996 10 01
Mechanical thermostats for gas-burning appliances
This European Standard specifies safety, constructional and performance requirements for mechanical thermostats for gas applications. It also establishes concepts, test c...
Withdrawn: 2010 08 01
§ Legal References
Publisher:
Austrian Standards International
Format:
Digital | 27 Pages
Language:
German
| English
Currently valid:
Optionally co-design standards:
ICS
This European Standard specifies safety, constructional and performance requirements for mechanical thermostats for gas applications. It also establishes concepts, test conditions
and marking. It applies to mechanical thermostats that control the gas flow directly or indirectly through an integral gas valve, and
that do not require external electrical energy for their operation.
The requirements specified here apply to thermostats for all gas appliances, for heating or cooling, which are suitable for one or more of the fuel gases of the 1st, 2nd and 3rd families and for the associated gas pressures. This standard only covers thermostats used with gas appliances which are not installed outdoors. Mechanical thermostats dealt with in this standard are intended for control functions.
ÖNORM M 7421-2
1980 09 01
Combinations of controls for gas appliances; temperature regulators and temperature limiters in comb...
Norm
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Issue date :
1994 05 12
Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances and designation
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Issue date :
1981 04 01
Carbon steel tubes suitable for screwing in accordance with ISO 7-1
Norm
Issue date :
1982 04 01
Pipe threads where pressure-tight joints are not made on the threads — Part 1: Designation, dimensions and tolerances
Norm
Issue date :
1973 04 01
ISO general purpose metric screw threads — Selected sizes for screws, bolts and nuts
Norm
Issue date :
1985 03 07
Rubber, vulcanized — Determination of the effect of liquids
