Trend and monitor levels continuously if controls system is capable of doing so (use portable data loggers and handheld instruments and document readings where needed to demonstrate compliance with District or Campus requirements). The COVID-19 pandemic makes this mission even more imperative. ASHRAE’s position is that “Transmission of SARS-CoV-2 through the air is sufficiently likely that airborne exposure to the virus should be controlled. During the Pandemic, disable any Demand Control Ventilation (DCV) and introduce the maximum possible OA flow 24/7 until further notice (including DOAS). ASHRAE: Reopening of Schools and Universities. Document any unusual observations other than those that can be recorded by control systems. 2020 Coronavirus advice. May 28, 2020. United States CDC Guidance for K-12 School Administrators on the Use of Cloth Face Coverings in Schools and Additional Considerations Table. The designer should also be concerned with mechanical filtration of the supply air and maintaining indoor comfort as defined by the design temperature and relative humidity. Determine if the Building was LEED or CHPS Certified. Changes to building operations, including the operation of heating, ventilating, and air-conditioning [HVAC] systems, can reduce airborne exposures.”. If the project is a LEED or CHPS project then the filters should already be designed for MERV 13. Check ultraviolet lamp, replace bulbs as needed (if applicable). Check the refrigerant system for evidence of leaks. These documents provide guidance for K-12 facilities in the use of cloth face coverings. This information describes how the HVAC systems should be operating to help minimize the chance of spreading SARS-Cov-2 and how to practically check/verify that operation. Determine the effect of additional external static pressure on the fan. Directly exhaust isolation rooms. Check for particulate accumulation on outside air intake screens and filters. If filter rack is damaged then repair rack. • ASHRAE, Reopening of Schools and Universities • ASHRAE, Guidance for Building Operations During the COVID-19 Pandemic, May 2020 • CDC, Operating Schools During Covid-19: CDC’s Considerations, Sept 1 2020 (sc roll down to view Johns Hopkins University eSchool+ Initiative – Analysis of Reopening Plans. COVID-19 pandemic and possible future epidemics related to the effects of heating, ventilation, and air-conditioning systems on disease transmission • Guidance developed for several building types and operational conditions, including for schools, commercial, residential, and health care • Comprised of 26 members led by Dr. William Bahnfleth Apply and utilize outdoor air quality sensors or reliable web-based data for outdoor pollution information as part of the new ventilation operation. Overall effectiveness of reducing particle concentrations depends on several factors: Location of the filter in the HVAC system or room air cleaner. Consider completing preventative and deferred maintenance projects not directly related to pandemic, but potentially improving facility IEQ. 2015 Michigan Mechanical Code, ASHRAE Standards 55 & 62.1, and ASHRAE COVID -19 Guidelines . Check for proper evaporator and condenser fluid flow and for fluid leaks. Daily flush prior to occupancy: Mechanical Systems should be operated in occupied mode (including normal or peak outside air rate introduced to each space) for minimum period of 2 hours prior to occupants re-entering building. Follow CDC guidelines for supply air return air paths, do not mix isolation room air with any other spaces. Check compressor oil level and/or pressure on refrigerant systems having oil level and/or pressure measurement means. Infection Control Risk Assessment (ICRA) is to be performed for new construction and renovations of nurse facilities. United States CDC Considerations for Institutions of Higher Education. Follow design guidelines for location of OA intakes and exhaust air from exhaust fans. This guidance has been formulated to help designers retrofit and plan for the improvement of indoor air quality and to slow the transmission of viruses via the HVAC systems. Check piping for leaks. But, with about 5,000 schools in the province, that means that on average there will only be about $10,000 a school to improve ventilation and help prevent the transmission of COVID-19. 1 . This guidance is primarily focused on HVAC systems within school and higher education facilities – many organizations are likely to have challenges outside of these facilities as well – transportation systems (primarily buses) may be an area of specific concern. This name was chosen because the virus is genetically related to the coronavirus responsible for the SARS outbreak of 2003. Click MORE to view all general COVID-19 resource guides. Check and clean fan blades and fan housing. United States CDC Readiness and Planning Tool to Prevent the Spread of COVID-19 in K-12 Schools. Check variable-frequency drive for proper operation. Schools Are Spending Millions on Ionization Technology to Fight the Coronavirus. All retrofits and modifications must not contradict ASHRAE 62.1 guidelines and must continue to meet or exceed applicable codes and standards. Document MERV rating of existing filters installed. $923,488. One Page Guidance for Reopening Schools August 20, 2020 En Español. Check variable-frequency drive for proper operation. ASHRAE Reopening Guide for Schools and Universities On July 22, 2020, the ASHRAE Epidemic Task Force released its updated Reopening Guide for Schools and Universities related to COVID-19. Read ASHRAE guidance. As communities in the United States consider how to safely re-open K-12 school buildings for in-person learning and activities and keep them open, CDC offers updated considerations for mitigation strategies that school administrators can use to help protect students, teachers, and staff and slow the spread of the virus that causes COVID-19. ASHRAE Standard 52.2-2017 -- Minimum Efficiency Reporting Value (MERV), Target Level for Filtration for Schools is MERV 13 or higher. Across America, buildings are opening back up — offices, schools, theaters, stores, restaurants — even as evidence mounts that the coronavirus can circulate through the … Unitary and Single Zone Equipment (For example: Wall Hung Units, Unit Ventilators, Mini-Splits, Packaged Terminal Air Conditioners, Water-Source Heat Pumps, Fan Coil Units): Monthly Check for particulate accumulation on filters, replace filter as needed. Determine if there are one or two filter banks. Customer Name: _____ Date:_____ Building Name: _____ This checklist is intended for use by a licensed mechanical contractor to review theHVAC systems in K-12 schools in the State of Michigan. Shaping Tomorrow's Built Environment Today, Officers, Directors, Councils, Committees, Staff, Science and Technology for the Built Environment, Instructor-Led Training Seminar and Short Courses, Self-Directed Learning / Group Learning Texts, 2021 Virtual Design and Construction Conference, 2021 ASHRAE Building Performance Analysis Conference, IAQ 2020: Indoor Environmental Quality Performance Approaches, Criteria for Annual Conference City Selection, Winter, Annual, & Virtual Conference Sponsorship Opportunities, Determining Building Readiness and Operations for Existing Facilities to Reoccupy After Shut-Down due to Pandemic, Checklist No. See ASHRAE and CDC for more information on air cleaning and filtration and other important engineering controls. Generally, particles with an aerodynamic diameter around 0.3 μm are most penetrating; efficiency increases above and below this particle size. Follow up on temperature control, humidity control or elevated carbon dioxide concentration issues observed to address cause(s). For filters with enhanced performance using static charge, consider MERV-A ratings to understand performance of filter if charge has been removed or dissipated. ASHRAE releases HVAC guide for reopening schools Wednesday, July 22, 2020 The ASHRAE Epidemic Task Force has developed guidance on the operation of HVAC systems to help mitigate the airborne transmission of SARS-CoV-2, the virus that causes COVID-19, as schools prepare to reopen in the fall. The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) has established ventilation standards for different types of school spaces (ASHRAE 62.1 2019 – Ventilation for Acceptable Indoor Air Quality Standards). Check P-trap on drain pan. The guidance should be applied to each unique climate zone, unique school building and HVAC system. For "Isolation mode" design Dedicated HVAC system. ASHRAE said in April that, ... President-elect Joe Biden proposed new aid for schools as part of a broader COVID-19 relief plan, which will require congressional approval. Check and fix economizer dampers and controls and maximize the economizer operation when possible (favorable outdoor conditions and outdoor air pollution). In VAV systems maximize the total supply air flow in each VAV terminal when the system is in full economizer mode. Verify water treatment target levels are being maintained. Replace and Upgrade Rack if possible, to accept a filter with a higher MERV rating. Media Contact: Sherri Simmons 404-446-1660 ssimmons@duffey.com. Cooling Towers and Evaporative-Cooled Devices Monthly. Perform chemical testing of system condensate and feed water. As of April 15, 2020, the following statement from the ASHRAE Epidemic Task Force was posted on their website: On the recommendation of the ASHRAE Epidemic Task Force, ASHRAE leadership has approved the following two statements regarding transmission of SARS-CoV-2 and the operation of HVAC systems during the COVID-19 pandemic: Check for evidence of leaks on gas heat section heat-exchanger surfaces. The designer needs to work closely with the local school system to work in conjunctions with new operational protocols and school operations. There's No Good Evidence It Works. Collect Original Design Drawings if available. 1 Summer Checklist for Fall Start of Classes. Review airflow patterns in occupied spaces to ensure airflow is not impeded. The following is meant to provide practical information and checklists to school district and university campus environmental health managers, facility managers, administrators, technicians, and service providers to prepare educational buildings to resume occupancy. Once completed, the list will provide a … Guidance from individual states or territories (United States): This reference includes basic information on state K-12 reopening plans and links to information from individual states where specific guidance and requirements can be located. How can schools improve ventilation within buildings to help prevent COVID-19 spread? | COVID-19 | Where Did SARS-CoV-2 Come From? Virologists and the wider scientific community do this work, so viruses are named by the International Committee on Taxonomy of Viruses (ICTV). This guidance should be applied to each unique climate zone, unique school building and HVAC system. 2: Startup Checklist for HVAC Systems Prior to Occupancy | Equipment and System Specific Checks and Verifications During the Academic Year | New/Modified Facility Design Recommendations | Designer Guidelines – General School | Nurses Office – General Requirements | Filtration Upgrades | Filtration Basics | Filtration Target Level | Information Gathering Stage | Data Analysis & Review | Implementation & Considerations | Operation of Occupied Facilities | Controlling Infection Outbreaks in School Facilities | Higher Education Facilities | Student Health Facilities | Laboratories | Athletic Facilities | Residence Facilities | Large Assembly. Check variable-frequency drives for proper operation. Adjust building air flows to prevent negative pressure differential. Maintain proper indoor air conditions (temperature and humidity) to maintain occupant comfort (refer to ASHRAE Standard 55), and to limit potential for mold growth in building structure and finishesReview potential for maintaining space relative humidity between 40% and 60%, which may reduce potential for airborne viral transmissionHumidification during heating season in cold climates creates significant potential for condensation in/on building envelope components – addition of, or modification to, humidification in these areas should be reviewed by competent professionals before changes are incorporated Trend and monitor temperature and humidity levels in each space to the extent possible and within the capability of BAS, portable data loggers and handheld instruments. Determine if a 1" rack can be refitted with a larger rack. Create a District or Campus Health and Safety Committee that includes all stakeholders (environmental health and safety, administration, education staff, operations staff, local healthcare providers, etc.). United States CDC Guidance for K-12 School Administrators on the Use of Cloth Face Coverings in Schools and Additional Considerations Table. ASHRAE standards for filtration ask schools to upgrade their heating, ventilation and AC systems to MERV 13 filters, which are more likely to catch particles that could carry coronavirus. Compensate for loss of capacity in winter with portable plug in electric heaters or higher discharge temps. Consider adjusting to maximize outdoor air or disabling operation of DCV if it will not adversely impact operation of overall system (Temporary recommendation while operating under infectious disease crisis). Develop policies for staff and contractor PPE requirements for completing work at facilities that follow local authority. Determine if the speed increase exceeds the fan maximum tip speed. Develop protocol to handle quarantine of other individuals who may have been exposed, wash/sanitize belongings and impacted spaces, look at potential for spread to adjacent spaces or other building areas through mechanical systems or other means. Check variable frequency drive for proper operation. Verify control valves operate properly. Consist of media with porous structures of fibers or stretched membrane material to remove particles from airstreams. For existing units, an increase in filtration efficiency may reduce airflow capacity. Tuberculosis, like COVID-19, is an airborne disease. Check the control system and devices for evidence of improper operation. Minimize the unit air recirculation to minimize zones cross contamination thru the return air system. Domestic water systems shall be prepared for use: Systems should be flushed to remove potential contaminants from stagnant equipment, piping, fixtures, etc. For the "Normal Mode" the HVAC system can be (supplementary) standard HVAC system (VRF +DOAS, Fan coils, WSHP/GSHP, DOAS etc) with current design practices (. For HVAC systems suspected to be contaminated with SARS-CoV-2, it is not necessary to suspend HVAC system maintenance, including filter changes but additional safety precautions are warranted, The risks associated with handling filters contaminated with coronaviruses in ventilation systems under field-use conditions have not been evaluated, Workers performing maintenance and/or replacing filters on any ventilation system with the potential for viral contamination should wear appropriate personal protective equipment (PPE), When feasible, filters can be disinfected with a 10% bleach solution or another appropriate disinfectant, approved for use against SARS-CoV-2, before removal. Consideration must be given to climate zone and building envelope to avoid mold growth or IAQ problems. 11/16/2020. Check variable frequency drive for proper operation. This reference provides cleaning guidance for multiple building types and should be applicable to most K-12 and higher education spaces. DSA is committed to helping California public schools prepare to re-open under the Centers for Disease Control’s COVID-19 requirements. Background for recommendations associated with masks or face coverings and recommendations for use under different circumstances. Review condition of cooling coils in air handling equipment – if issues with condensate drainage are identified or biological growth is identified, corrective action should be taken to clean or repair. Verify proper separation between outdoor air intakes and exhaust discharge outlets to prevent/limit re-entrainment of potentially contaminated exhaust air (generally minimum of 10-foot separation - comply with local code requirements). Administrators oversee the daily operations of K-12 schools. There are different processes and purposes for naming viruses and diseases. ASHRAE is working on a short document to help schools figure out their air purifier needs, Metzger said. For systems with Steam Boilers, develop a schedule that provides minimum supervision on-site. For example, HIV is the virus that causes AIDS. For systems using natural gas: Check gas pressure, gas valve operation, and combustion fan operation. For retrofitting or replacing an existing AHU, increase outside air to maximum allowable per Air Handling Unit (AHU) without compromising indoor thermal comfort for learning environment (due to severe thermal outdoor air conditions) or space IAQ due to poor outdoor ambient conditions (pollution). Systems incorporating diversity into sizing may require DCV to maintain ventilation to occupied spaces – consideration should be given to system capabilities and outdoor air flow rates should be maximized. Compensate for loss of capacity in summer with lower discharge temps off of AHU – recommend 52 F (this is mainly for VAV units where supply air temperature is controlled and due to additional pressure drop associated with higher efficiency filters). This reference provides recommendations for policies, general operations, response protocols, communications, etc. Check chemical injector device for proper operation. Conditioning Engineers (ASHRAE), may also improve resistance to infection.1 The American Society for Microbiology (ASM) has recently addressed the issue of COVID-19 transmission in the “built environment” (BE), defined as the buildings, automobiles and other indoor settings in … Retain in-house facility workers: clean, disinfect, maintain building systems; assess asbestos and lead paint status; pest-proof inside and out; check water and ventilation filters; assess water damage, fix leaks. Refer to section 6.8.2 exception for cases where Energy Recovery can be applied. Develop standards for frequency of filter replacement and type of filters to be utilized. NYSERDA announces first-of-its-kind partnership with ASHRAE to build back better and mitigate spread of COVID while combating climate change Submitted Wed, Jul 8th 2020 05:45 pm The designer needs to work closely with the local school system to work in conjunctions with new operational protocols and school operations. Protecting the health, safety and welfare of the world’s students from the spread of SARS-Cov-2 (the virus that causes COVID-19 disease) is essential to protecting the health, safety and welfare of the entire population. Maintain pressure relationship for room, ante room and corridor. - may be done with central Building Automation System (BAS) if available - mobile/handheld devices may be used if central monitoring not available. Filters (disinfected or not) can be bagged and disposed of in regular trash, or applicable local health and safety standards. Up to one week prior to occupancy if systems have been shut down to bring temperature and humidity under control prior to occupancy. This page is updated as new information becomes available. If filter racks can accept a minimum MERV 13 filter but were not part of the original design, the following analysis can be completed by internal staff or a consulting engineer: Provide Information previously gathered in the Gathering Stage to individual completing additional analysis. This guidance has been formulated to help designers retrofit and plan for the improvement of indoor air quality and to slow the transmission of viruses via the HVAC systems. Perform chemical testing of system water. Verify filters are installed correctly. Increase the filtration in the unit to the maximum available, Provide a recirculation fan filtration unit and duct into the return of units, Provide a HEPA filtration unit which re-circulates air within the space, Consider additional treatment technology to kill/disable airborne infectious aerosols (refer to, Consider alternate filter locations in return duct or grille but consider static pressure drop implications and relationship with outside air dampers, Install a pressure gauge on units to assist in determining filter change frequency, Document motor amperages before and after filter changes, alarm points in BAS may need to be updated, Filter change frequency may increase due to seasonal and atmospheric considerations at different sites (such as Pollen Season), There will be an increase in fan energy used to overcome additional pressure drop from filters, With an increase pressure drop for filtration there will be less airflow to heat and cool the spaces during peak design days. United States CDC Readiness and Planning Tool to Prevent the Spread of COVID-19 in K-12 Schools. ASHRAE Reopening Guide for Schools and Universities On July 22, 2020, the ASHRAE Epidemic Task Force released its updated Reopening Guide for Schools and Universities related to COVID-19. Founded in 1894, ASHRAE is a global professional society committed to serve humanity by advancing the arts and sciences of heating ventilation, air conditioning, refrigeration and their allied fields. Check refrigerant system for leaks. The ASHRAE COVID-19 Preparedness Resources webpage provides easily accessible resources from ASHRAE to building industry professionals. Determine the type of motor that is used in the equipment. School Health and Safety Frequently Asked Questions: Coronavirus (COVID-19) Recovery Period (Updated Dec. 14, 2020) The Office of the State Superintendent of Education (OSSE) issued updated guidance on Dec. 14, 2020 for District of Columbia public elementary and secondary schools, including public charter schools, It should be clearly stated and understood that adherence to this guidance does not eliminate the potential for airborne transmission of the virus and should not serve as a replacement for other steps such as social distancing, use of masks or other face coverings, cleaning and disinfection of surfaces, etc. Read More ASHRAE resources on COVID-19. He served on ASHRAE’s Board of Directors for 11 years, and has chaired the Publishing and Education Council and numerous ASHRAE committees. If MERV 13 filters are installed in the existing equipment then order additional filters for future filter changes. Check coil fins and check for damage. ALL DISTRICT PERSONNEL RESPONSIBLE FOR THE OPERATION AND MAINTENCE OF HVAC SYSTEMS IN SCHOOL BUILDINGS SHOULD READ AND Consider changing out motor to increase static pressure available, but this may require significant electrical modifications. Perform chemical testing of system water. Shaping Tomorrow's Built Environment Today, Officers, Directors, Councils, Committees, Staff, Science and Technology for the Built Environment, Instructor-Led Training Seminar and Short Courses, Self-Directed Learning / Group Learning Texts, 2021 Virtual Design and Construction Conference, 2021 ASHRAE Building Performance Analysis Conference, IAQ 2020: Indoor Environmental Quality Performance Approaches, Criteria for Annual Conference City Selection, Winter, Annual, & Virtual Conference Sponsorship Opportunities. This page is updated as new information becomes available. Increases above and below this particle size for outdoor pollution information as part the. 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