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Correspondence Dan Nelson From: Tom Hochstatter Sent: Monday,January 09, 2017 8:45 AM To: Dan Nelson Subject: FW: Burnham &Ash unit bath fans Attachments: ASHRAE-62_1-2010.pdf Importance: High From: Dan Nelson Sent:Wednesday,January 4, 2017 1:59 PM To:Tom Hochstatter<TomH@tigard-or.gov> Subject: FW: Burnham &Ash unit bath fans Importance: High From: Brian Shea [mailto:brian©americanheating.net] Sent: Wednesday, January 04, 2017 1:16 PM To: Dan Nelson Subject: Burnham &Ash unit bath fans Importance: High Dan, Here is the information regarding the bath exhaust fan operation. OMSC 2014 401.1 Scope, last sentence: r cc. /v—.? ASHRAE Standard 62.1-2010 is attached.Table 6-4(page 20) establishes the exhaust rates/control requirements. For Private toilets, it calls out 25/50 CFM (25 continuous or 50 otherwise per note E). Does not require humidistats or timers. Please give me a call to review or if you need any additional information. Thanks, Brian Shea American Heating Inc. 5035 SE 24th Ave. Portland, OR 97202 1 (503)-239-4600 (503)-239-7038 (503)-572-9004 Visit us on the web at www.americanheating.net DISCLAIMER: E-mails sent or received by City of Tigard employees are subject to public record laws. If requested, e-mail may be disclosed to another party unless exempt from disclosure under Oregon Public Records Law. E-mails are retained by the City of Tigard in compliance with the Oregon Administrative Rules"City General Records Retention Schedule." 2 �`` ©American Society of Heating,Refrigerating and Air-Conditioning Engineers,Inc.(www.ashrae.org). For personal use only. Additional reproduction,distribution,or transmission in either print or digital form is not permitted without ASHRAE's prior written permission. or portions of rooms,without direct openings to the outdoors 6.6 Design Documentation Procedures. Design criteria are ventilated through adjoining rooms,the opening between and assumptions shall be documented and should be made rooms shall be permanently unobstructed and have a free area available for operation of the system within a reasonable time of not less than 8%of the area of the interior room nor less after installation. See Sections 4.3, 5.1.3, 5.16.4, 6.2.7.1.5, than 25 ft2(2.3 m2). and 6.3.6 regarding assumptions that should be detailed in the 6.4.3 Control and Accessibility. The means to open documentation. required operable openings shall be readily accessible to building occupants whenever the space is occupied.Controls 7- CONSTRUCTION AND SYSTEM START-UP shall be designed to properly coordinate operation of the nat- 7.1 Construction Phase ural and mechanical ventilation systems. 7.1.1 Application.The requirements of this section apply 6.5 Exhaust Ventilation.The design exhaust airflow shall be to ventilation systems and the spaces they serve in new build- determined in accordance with the requirements in Table 6-4. ings and additions to or alterations in existing buildings. Exhaust makeup air may be any combination of outdoor air, 7.1.2 Filters. Systems designed with particle filters shall recirculated air,and transfer air. not be operated without filters in place. TABLE 6-4 Minimum Exhaust Rates Exhaust Rate, Exhaust Rate, Exhaust Rate, Exhaust Rate, Air Occupancy Category cfm/unit cfm/ft2 Notes Lis-unit L/s•m2 Class Arenas - 0.50 B - - 1 Art classrooms 0.70 - 3.5 2 Auto repair rooms 1.50 A - 7.5 2 Barber shops - 0.50 - 2.5 2 Beauty and nail salons - 0.60 - 3.0 2 Cells with toilet - 1.00 - 5.0 2 Copy,printing rooms - 0.50 - 2.5 2 Darkrooms - 1.00 - 5.0 2 Educational science laboratories - 1.00 - 5.0 2 Janitor closets,trash rooms,recycling - 1.00 - 5.0 3 Kitchenettes - 0.30 - 1.5 2 Kitchens-commercial - 0.70 - 3.5 2 Locker/dressing rooms - 0.25 - 1.25 2 Locker rooms - 0.50 - 2.5 2 Paint spray booths - - F - 4 Parking garages - 0.75 C - 3.7 2 Pet shops(animal areas) - 0.90 - 4.5 2 Refrigerating machinery rooms - F - - 3 Residential kitchens 50/100 - G 25/50 - 2 Soiled laundry storage rooms - 1.00 F - 5.0 3 Storage rooms,chemical 1.50 F - 7.5 4 Toilets-private 25/50 - E 12.5/25 - 2 Toilets-public 50/70 - D 25/35 - 2 Woodwork shop/classrooms 0.50 - 2.5 2 A Stands where engines are run shall have exhaust systems that directly connect to the engine exhaust and prevent escape of fumes. B When combustion equipment is intended to be used on the playing surface additional dilution ventilation and/or source control shall be provided. C Exhaust not required if two or more sides comprise walls that are at least 50%open to the outside. D Rate is per water closet and/or urinal.Provide the higher rate where periods of heavy use are expected to occur,e.g.,toilets in theatres,schools,and sports facilities.The lower rate may be used otherwise. E Rate is for a toilet room intended to be occupied by one person at a time.For continuous system operation during normal hours of use,the lower rate may be used.Otherwise use the higher rate. F See other applicable standards for exhaust rate. G For continuous system operation,the lower rate may be used.Otherwise use the higher rate. Copyright ASHRAE Provided by IHS under license with ASHRAE Licensee=Syska Hennessy Group/5965547004,User-Kucma,lanil/ASHRAE Standard 62.1-2010 No reproduction or networking permitted without license from IHS Not for Resale,09/10/2013 15:16:56 MDT