#Ashrae 62 breathing zone update#

The Statewide CASE Team 2019 Title 24, Part 6 Final CASE Report is available below.

Add Table 120.1 вЂ“ D: Minimum Exhaust Rates.

Add Table 120.1 вЂ“ C: Zone Air Distribution Effectiveness.

Add Table 120.1 вЂ“ B: Minimum Ventilation Rates in Breathing Zone which uses the expanded list of occupancy categories at 130 percent of 62.1-2016.

Delete Table 120.1 вЂ“ A: Minimum Ventilation Rates and add in its place the System Ventilation Efficiency table.

#Ashrae 62 breathing zone update#

Update exhaust ventilation airflow requirements.Revise Mechanical Ventilation required ventilation calculation align with 130 percent of ASHRAE 62.1-2016 and include a simplified minimum ventilation rate calculation procedure.Revise Natural Ventilation criteria to align with ASHRAE 62.1-2016.Require MERV 13 air filters for all ducted forced air system supply outdoor air or all occupancies.Replace Section 120.1(b) with the ASHRAE 62.2-2016 requirements which apply to high-rise residential buildings.The specific recommendations include the following: All of the proposed changes would impact the mandatory requirements for ventilation in Section 120.1 of Title 24, Part 6. Therefore, aligning Title 24, Part 6 with select sections in Title 24, Part 4 will concurrently align with the corresponding section in ASHRAE 62.1-2016. The ventilation requirements in 2016 Title 24, Part 4 are based on or reference ASHRAE 62.1-2013.

This measure proposes revising Title 24, Part 6 requirements using a combination of the requirements in Title 24, Part 4 (California Mechanical Code) and ASHRAE 62.1-2016: Ventilation for Acceptable Indoor Air Quality.