HRAI worksheets, as identified below, are available in PDF format and can be downloaded and printed at no charge. The worksheets are intended to be used only by HRAI certified individuals. 1.0 Heat Loss & Heat Gain Residential Heat Loss & Heat Gain Walkout Basement Calculation RHLG Manual Addendum - CSA F280-12 June 2018 Update (for 5th 2014 Edition Only) HRAI Digest (2017 Ed) Addendum - CSA F280-12 June 2018 Update Small Commercial Heat Loss and Heat Gain 2.0 Air System Design Residential Air System Design Small Commercial Air System Design 3.0 Mechanical Ventilation Design Residential Mechanical Ventilation Design – Ontario Building Code Residential Mechanical Ventilation Design – Ontario Building Code 2024 Residential Mechanical Ventilation Design – National Building Code 2010 Residential Mechanical Ventilation Design – National Building Code 2015 Residential Mechanical Ventilation Design – National Building Code 2020 Residential Mechanical Ventilation Design – British Columbia Building Code Residential Mechanical Ventilation Record – CSA F326 (W2) 3.1 Additional Ventilation Worksheets Ontario Building Code Principal Duct Sizing Sheet Ontario Building Code Supplement Duct Sizing Sheet National Building Code Single Duct Sizing Sheet National Building Code Branch Duct Sizing Sheet British Columbia Building Code Single Duct Sizing Sheet British Columbia Building Code Branch Duct Sizing Sheet CSA F326 Conceptual Design Plan (W-0) CSA F326 IMBALANCE @ TVCC for Systems with More Exhaust than Supply (W-3A) CSA F326 IMBALANCE @ CEC for Systems with Spillage Susceptible Combustion Appliances @ CEC (W-3C) CSA F326 HRV Airflow Adjustment (W-4A) Depressurization Test Report CSA F326 Complete Mechanical Ventilation Design Package (Including Design plan, Duct Sizing and Equipment Selection) 4.0 Additional Forms HRV/ERV Balancing Report Airflow Label – HRV/ERV (Single Label) Airflow Label – HRV/ERV (Multi-Label) This can be printed on the standard Avery Label #05168 5.0 Hydronic System Design Residential Radiant Hydronics Design Package 6.0 Commissioning Residential Commissioning
