CSA amends F280-12 standard, extends public review period

The public review period for recent amendments to CSA standard F280-12 has been extended to March 18, 2018.

Amendments to the standard (determining the required capacity of residential space heating and cooling appliances) include:

• Ventilation sensible heat gain calculation formula is revised
• Default SHGC values are updated to 0.47 for all low-E double-glazed windows on Table 6F
• Default SHGC values are updated to 0.40 for all low-E triple-glazed windows on Table 6G
• Annex D of the standard is updated to require designers to configure a building to have largest glazed area to face southwest, if the facing direction of the building is unknown.
• Annex E of the standard is updated to prompt designers to report SHGC for windows and skylights on the heat loss and gain calculation summary sheet.

The public can view amendments at www.publicreview.csa.ca/document/manage/2836.

Registration is required to view or comment on the draft. www.hrai.ca www.csagroup.org