Technical Booklet K Ventilation·Page 23·Diagram 2.1
Ventilation Systems for Dwellings without Basements
Four ventilation system types are illustrated for dwellings without basements: System 1 uses background ventilators and intermittent extract fans; System 2 uses passive stack ventilation; System 3 uses continuous mechanical extract; and System 4 uses continuous mechanical supply and extract with heat recovery.
System 1: background ventilators and intermittent extract fans
System 2: passive stack ventilation
System 3: continuous mechanical extract
System 4: continuous mechanical supply and extract with heat recovery
Stack ducts see para 2.11
Supply and extract system
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