DIN EN 656/A1-2006 燃器中央供热系统.标称热值大于70kW小于300kW的B型锅炉
Gas-fired central heating boilers - Type B boilers of nominal heat input exceeding 70 kW, but not exceeding 300 kW; English version of DIN EN 656/A1:2006-12
Add to the first list of indents:
- of the standard type possibly producing condensation in certain circumstances;
- of the low-tempetature type;
Delete in the second list of indents:
- of the low-temperature type;