Description

G4 Ventilation Acceptable Solution G4/AS1 Fifth Edition provides a compliance pathway for meeting the ventilation performance requirements of Clause G4 of the New Zealand Building Code, specifically for the ventilation of buildings and gas-fuel appliances.

The scope of the document includes natural, mechanical, and combined ventilation systems for spaces within buildings, as well as specific provisions for gas-fuel appliances and flue locations.

It is suitable for a wide range of building types, including residential and commercial buildings.

The fifth edition has been published in standalone format with improved clarity, consistent structure, and updated terminology. The acceptable solution references the Building Product Specifications for air handling systems.

The fifth edition also includes minor amendments to correct formatting, grammar, and cross-references.

Scope

This verification method can be used for commissioning ducted mechanical systems and verification of air purity in workplaces achieved by ventilation.

Items outside the scope of this document

There are no specific items outside the scope of this document.