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ES+H Multifamily Building Upgrades_508c_02 09 2016

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56 Energy Savings Plus Health | INDOOR AIR QUALITY GUIDELINES FOR MULTIFAMILY BUILDING UPGRADES PRIORITY ISSUE 21.0 LOCAL EXHAUST VENTILATION ASSESSMENT PROTOCOLS (AP) MINIMUM ACTIONS (MA) EXPANDED ACTIONS (EA) AP 21.1 Identify Contaminant Sources That Require Exhaust Ventilation Identify rooms or areas with localized contaminant sources that require exhaust ventilation such as bathrooms, kitchens, garages and other spaces with strong pollutant sources. To the extent possible, include nonresidential spaces in the building (e.g., retail spaces, fitness facilities, beauty and nail salons), which may require collaboration with the building owner, property manager, and other tenants and occupants within the building. AP 21.2 Assess Dwelling Units for Local Exhaust and Compliance with ASHRAE Standard 62.2-2013 Determine whether dwelling units in the building have local exhaust ventilation, particularly in kitchens and bathrooms. Determine whether the dwelling units comply with the local exhaust requirements for kitchens and bathrooms of ASHRAE Standard 62.2-2013, including the standard's Appendix A for existing buildings, as applicable. Determine kitchen and bathroom exhaust flow rates and whether exhaust is vented directly to the outdoors. AP 21.3 Assess Clothes Dryer Exhausts Determine whether clothes dryers exhaust directly to the outdoors. Condensing dryers piped to a drain are exempt. Inspect or verify that clothes dryer exhaust duct(s) do not discharge into crawlspaces or attics or within walls. Inspect clothes dryer vents for restrictions and lint buildup. AP 21.4 Determine Whether Spaces Outside Dwelling Units Comply With Applicable Local Exhaust Requirements Determine whether spaces outside dwelling units in the building comply with the exhaust requirements of ASHRAE Standard 62.1-2013, Table 6.5, as applicable. To the extent possible, include nonresidential spaces in the building (e.g., retail spaces, fitness facilities, beauty and nail salons, parking garages), which may require collaboration with the building owner, property manager and other tenants. MA 21.1 Install, Repair or Replace Local Exhaust Ventilation in Dwelling Units If ASHRAE Standard 62.2-2013 requirements for kitchen and bathroom exhausts are not met, install, repair or replace local exhaust ventilation in dwelling units to meet the requirements. Ensure ducts are sized and installed properly and exhausted directly to the outdoors. In dwelling units where local exhaust ventilation is deficient and cannot be corrected with exhaust fans, increase the whole-building ventilation airflow that applies to the dwelling unit to compensate using the alternative compliance method (Appendix A of Standard 62.2-2013). Ensure that, if provided, kitchen and bath exhaust fans are operational, vented directly to the outdoors, and meet the continuous or intermittent exhaust rate requirements of ASHRAE Standard 62.2-2013. Advise building management and occupants about the need to use exhaust fans in kitchens and bathrooms during activities that generate pollutants and moisture (e.g., cooking and showering). MA 21.2 Ensure Proper Venting of Clothes Dryers Ensure that all clothes dryers exhaust directly to the outdoors and cannot be readily diverted indoors by occupants. Condensing dryers piped to a drain are exempt. MA 21.3 Meet Exhaust Requirements for Spaces Outside Dwelling Units Install, repair or replace exhaust ventilation in spaces outside dwelling units to meet the minimum exhaust rates specified in ASHRAE Standard 62.1-2013, Table 6.5. This may include, for example, janitor closets, trash storage areas, laundry facilities and parking garages. To the extent possible, work with the building owner, property manager and other building tenants to ensure retail and other nonresidential spaces have exhaust ventilation that meets the applicable requirements of ASHRAE Standard 62.1-2013, Table 6.5. MA 21.4 Implement Minimum Actions for Compartmentalization to Supplement Exhaust Ventilation Follow the Minimum Actions under Priority Issue 16.0 Compartmentalization to enhance the effectiveness of exhaust ventilation and reduce odor migration and unwanted airflow from adjacent spaces. EA 21.1 Upgrade Kitchen and Bath Exhausts Ensure kitchen and bath exhausts meet requirements of ASHRAE Standard 62.2- 2013, without the need to use the alternative compliance path (Appendix A of ASHRAE Standard 62.2-2013). EA 21.2 Use Strategies in Bathrooms to Control Local Exhaust Fan Use one or more of the following strategies in bathrooms to control the use of the local exhaust fan: • An occupancy/motion sensor. • An automatic humidistat controller. • An automatic timer to operate the fan for 20 minutes or more after an occupant leaves the room. • A continuously operating exhaust fan. EA 21.3 Install Additional Local Exhaust Ventilation For spaces outside dwelling units with strong, localized pollutant sources (e.g., arts and crafts rooms, exercise rooms, cleaning supply closets), consider installing dedicated local exhaust ventilation. EA 21.4 Implement Expanded Actions for Compartmentalization to Supplement Exhaust Ventilation Follow the Expanded Actions under Priority Issue 16.0 to further enhance the effectiveness of exhaust ventilation and reduce odor migration and unwanted airflow from adjacent spaces. References for Priority Issue 21.0 Local Exhaust Ventilation: 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 Appendix B: Property Management and Occupant Education

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