DIN EN 303-7-2007 加热锅炉.第7部分:用标称热输出功率小于1000 kW的强排风燃炉装备的燃气中央加热锅炉
Heating boilers - Part 7: Gas-fired central heating boilers equipped with a forced draught burner of nominal heat output not exceeding 1 000 kW; English version of DIN EN 303-7:2006-05
This European Standard specifies the requirements and test methods for the contruction,the safety and the rational energy usage for gas-fired standard and low temperature central heating boilers equipped with a forced draught burner.
These boilers comprise a boiler body and a forced draught gas burner brought together at the producer's assembly facility,the whole being disigned and marketed as a complete boiler.
This standard does not apply to the case of the assembly of a boiler body and a forced draught gas burner designed and marketed separately.In this case,EN 303-3 applies.
This European Standard applies to type B boilers with a nominal heat output not exceeding 100 kw with a water temperature at normal operation not exceeding 105°C and with a maximum water-side operating pressure not exceeding 8 bar.
This European Standard does not contain all the necessary requirements for:
- condensing boilers and combination boilers;
- boilers intended to be installed in the open;
- boilers permanently fitted with more than one flue outlet;
- boilers intended to be connected to a common flue having mechanical extraction;
- boilers equipped with several combustion chambers.
This European Standard does not apply to living-space dedicated boilers(see 3.6).
This European Standard only covers type testing.