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  1. Air
  2. Increased ventilation

Increased ventilation

Features/Air/Feature 15

Increased ventilation

Intent: 

To expel internally-generated pollutants through an increased supply of outdoor air.

15: Increased ventilation
    Post Date: 05 Feb, 2018
    Status: Not Approved

    CIBSE Guide A is not accepted as an alternative to the requirements of Feature 15 Part 1. Note that the ventilation rates specified are generally not 30% above those required in ASHRAE 62.1-2013.
    Post Date: 27 Apr, 2017
    Status: Approved

    CEN Standards EN 15251:2007 and EN 16798-3:2017 may be used in lieu of ASHRAE 62.1-2013 for Feature 15, Part 1. ​​​​

    The project must meet Category I ​or II​ (described in Table 1)​ and must calculate the ventilation rate based on ​either of the below calculation methods​,​ referenced in EN 15251: 2007​, ​section B.1.3​ ""Method based on ventilation rate per person or per m² floor area​:"" ​
    ​1​) the addition of the ​occupant and building ​values ​(see section B.1.2).
    2​) the highest value (maximum of the calculated value based on per person and the value based on per m² floor area from Table B.3).

    ​Additionally, the requirements of CEN Standard EN 15251-2007 must be met and the performance requirements of CEN Standard EN 16798-3:2017 related to ventilation and room conditioning systems must be met (excluding section 7.3, Thermal Environment; section 7.6, Acoustic Environment; section A.16; and section A.17).
    Post Date: 24 Oct, 2016
    Status: Approved

    AS 1668.2 may be used in lieu of ASHRAE 62.1 for Feature 15, Part 1. Note that projects that wish to comply with AS 1668.2 must increase ventilation by 50% rather than the 30% increase required when complying with ASHRAE 62.1.