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Norm
ÖNORM EN 656
Issue date: 2007 03 01
Gas-fired central heating boilers - Type B boilers of nominal heat input exceeding 70 kW, but not exceeding 300 kW (consolidated version)
This standard specifies the requirements and test methods concerning, in particular the construction, safety,
fitness for purpose, and rational use of energy, as well as...
Withdrawn: 2022 03 15
Publisher:
Austrian Standards International
Format:
Digital | 138 Pages
Language:
German
| English
| Download GER/ENG
Optionally co-design standards:
ICS
This standard specifies the requirements and test methods concerning, in particular the construction, safety,
fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central
heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed
burners, and are hereafter referred to as "boilers".
This standard applies to boilers of type B, as listed in 4.2:
that use one or more combustible gases of the three gas families at the pressures stated in Tables 14
and 15;
that have a nominal heat input (net CV basis) exceeding 70 kW, but not exceeding 300 kW, including
modular boilers;
where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;
where the maximum operating pressure in the water circuit does not exceed 6 bar;
of the standard type possibly producing condensation in certain circumstances;
of the low-temperature type.
The standard applies to boilers designed for sealed water systems or for open water systems.
The standard does not contain all the requirements necessary for boilers:
intended to be installed in the open or in living rooms;
permanently fitted with more than one flue outlet;
where the combustion circuit is sealed with respect to the room where the boiler is installed;
of the condensing type;
intended to be connected to a common flue having mechanical extraction;
fitted with a forced draught burner in accordance with EN 676;
producing hot water for domestic purposes.
This standard only covers type testing.
ÖNORM EN 656
2007 03 01
Gas-fired central heating boilers - Type B boilers of nominal heat input exceeding 70 kW, but not ex...
Norm
↖
ÖNORM EN 656
2000 02 01
Gas-fired central heating boilers - Type B boilers of nominal heat input exceeding 70 kW but not exc...
Norm
ÖNORM M 7444
1996 11 01
Special gas-fired boilers with atmospheric burners (except B11, B11BS, not exceeding 70 kW)
Norm
ÖNORM M 7444
1974 09 01
Gas-fired boilers for hot water heating without and with preparation of hot water (for other than he...
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