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ES+H Multifamily Building Upgrades_508c_02 09 2016

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Energy Savings Plus Health | INDOOR AIR QUALITY GUIDELINES FOR MULTIFAMILY BUILDING UPGRADES 53 PRIORITY ISSUE 19.0 MECHANICAL VENTILATION FOR MULTIPLE DWELLING UNITS USING CENTRAL EXHAUST (continued) ASSESSMENT PROTOCOLS (AP) MINIMUM ACTIONS (MA) EXPANDED ACTIONS (EA) requirement of 0.06 cfm per square foot of floor area. If nonresidential spaces (e.g., exercise rooms, lobbies, mailrooms, commercial/ retail spaces) are included in the scope of service, determine whether the ventilation in these spaces meets the requirements of ASHRAE Standard 62.1-2013. AP 19.4 Identify and Assess Outdoor Air Intakes Identify the location of outdoor air intakes and assess their distances from outdoor pollutant sources (e.g., vehicle exhaust, plumbing vents, exhaust discharges). • Compartmentalize to reduce make-up air coming from adjacent units. Refer to Priority Issue 16.0. o If make-up air is provided by pressurized corridors, do not apply weather stripping to unit entry doors; restore or repair make-up air system as needed. o If make-up air is not provided by pressurized corridor systems, provide outdoor make-up air in each dwelling unit (e.g., trickle vents) and do not install pressurized corridor make-up air systems. o Advise the building owner or property manager to implement a preventative maintenance plan to inspect exhaust grilles in all dwelling units at least once per year. • Ensure outdoor air intakes that are part of ventilation systems for dwelling units are located a minimum distance of 10 feet from contaminant sources including plumbing stacks, vents, exhaust hood discharges or vehicle exhaust (see ASHRAE Standard 62.2-2013). • If mechanical exhaust systems serve several areas, ensure the backdraft dampers are installed as required by local codes and ASHRAE Standard 62.2-2013. MA 19.2 Repair, Adjust and Upgrade Ventilation Systems in Common Corridors and Nonresidential Spaces As Needed Ensure common corridors in the building meet the ASHRAE Standard 62.1-2013 minimum outdoor air ventilation rate requirement of 0.06 cfm per square foot of floor area. If included in the scope of service, ensure nonresidential spaces in the building meet the ventilation 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, adjust systems to provide the maximum amount of outdoor air ventilation possible. References for Priority Issue 19.0 Mechanical Ventilation for Multiple Dwelling Units Using Central Exhaust: ASHRAE Standard 62.1-2013 – Ventilation for Acceptable Indoor Air Quality ASHRAE Standard 62.2-2013 – Ventilation and Acceptable Indoor Air Quality in Low-Rise Residential Buildings ASHRAE Standard 189.1-2014, Standard for the Design of High-Performance Green Buildings, Section Filtration and Air Cleaner Requirement EPA: National Ambient Air Quality Standards NCHH: Improving Ventilation in Existing or New Buildings With Central Roof Exhaust New York State Energy Research and Development Authority (NYSERDA): Improving Central Exhaust Systems for Multifamily Buildings Appendix B: Property Management and Occupant Education

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