Issue link: https://hi.iaq.net/i/655416
Energy Savings Plus Health | INDOOR AIR QUALITY GUIDELINES FOR MULTIFAMILY BUILDING UPGRADES 96 19.0 Mechanical Ventilation for Multiple Dwelling Units Using Central Exhaust (continued) Assessment Protocol and Action Verification Complete N/A NOTES EA 19.1 Air sealed the central exhaust system's ventilation shaft with a spray seal system (aerosol or fluid applied). Ensured that the ductwork sealing required under Minimum Actions (roof curb connections, lateral connections and connections behind exhaust grilles) was completed before air sealing the ventilation shaft. EA 19.2 For nonresidential spaces that are included in the scope of service, in locations where the ambient outdoor air exceeds national standards for particulate matter (PM 2.5 , PM 10 ) or ozone, ensured that the outdoor air filtration and air-cleaning requirements of ASHRAE Standard 189.1-2014 are met for mechanical ventilation systems. 20.0 Natural (Not Fan-Powered) Ventilation Assessment Protocol and Action Verification Complete N/A NOTES AP 20.1 Determined whether dwelling units are served by natural ventilation systems. For other outdoor air ventilation configurations, referred to Priority Issues 18.0 and 19.0. AP 20.2 Determined whether the dwelling units and/or building meet the exceptions to the whole-building mechanical ventilation requirement in ASHRAE Standard 62.2-2013, Section 4.1.1. AP 20.3 Determined whether ventilation provided to corridors and nonresidential spaces, as applicable, meets the requirements of ASHRAE Standard 62.1-2013. AP 20.4 Identified the locations of outdoor air intakes for all ventilation systems and assessed their distances from outdoor pollutant sources. MA 20.1 Converted the natural ventilation system to a fan-powered system if the dwelling unit served by natural ventilation does not meet the exceptions to the whole-building mechanical ventilation requirement in ASHRAE Standard 62.2-2013. MA 20.2 Repaired or upgraded ventilation systems serving corridors and nonresidential spaces, as applicable, to ensure proper operation and to meet the requirements of ASHRAE Standard 62.1-2013. If it is not possible to achieve the ASHRAE Standard 62.1-2013 minimum outdoor air ventilation rates, adjusted systems to provide the maximum amount of outdoor air ventilation possible. EA 20.1 Included requirements for advanced passive ventilation systems. The ventilation rate for each dwelling unit must be sufficient to achieve the goal of an ASHRAE Standard 62.2-2013 mechanical ventilation rate (i.e., the annual average ventilation rate shall not be less than if a mechanical system was installed according to ASHRAE Standard 62.2-2013). EA 20.2 For nonresidential spaces that are included in the scope of service, in locations where the ambient outdoor air exceeds national standards for particulate matter (PM 2.5 , PM 10 ) or ozone, ensured that the outdoor air filtration and air-cleaning requirements of ASHRAE Standard 189.1-2014 are met for mechanical ventilation systems. Color Codes Assessment Protocol (AP) Minimum Action (MA) Expanded Action (EA)