DTU 68.3 standard
Ventilation: function and challenges

DTU 68.3 has been in force since 1^er September 2013 for private contracts, and since 1^er October 2013 for public contracts. Its wording has been brought into line with European standards.

The standard NF DTU 68.3 is not a compilation of DTU 68.1 and 68.2.

In this new standard, design, dimensioning, implementation and commissioning are covered in Part 1-1. This part is divided by type of mechanical ventilation system:

• general rules ;

• Self-adjusting single-flow CMV ;

• gas-fired CMV ;

• double-flow CMV.

Part 1-2 sets out the general criteria for selecting materials for ventilation systems.

Administrative clauses, from design to installation, are covered in part 2 of NF DTU 68.3.

DTU 68.3 defines the rules...