41. Boiler NOx emissions NOx emissions for gas-fired boilers should stay within predefined emission levels. To fulfill this criterion, the accommodation should install a gas-fired class 5 boiler (as per standard EN 297 prA3).

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1. Definition: The boiler should be class 5 of the EN 297 prA3 no...
2. Focus: The norm EN 297 prA3 is related to Gas-fired centr...
3. Additional focus
4. Implementation: Step 1: Identify if the boiler already installed i...
5. How to document the criteria: Prepare a copy of the technical booklet or a decla...

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