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Makeup Air Opening Table for New and Existing Dwelling <br /> Table 501.3.2 <br /> One or multi le power One or multiple fan- One atmospherically Multiple atmospherically <br /> vent,directvent ap- assisted appliances and • vented gas or oil ap- vented gas or oil op- Duct di- <br /> oneness,or rho combus- power vent or direct pllance or one solid fuel piiances or solid fuel ameter <br /> tion appliances vent appliances appliance appliances <br /> iI Column A Column B Column C Column D <br /> Passive oplening 1-36 1-22 1-15 1-9 3 <br /> l <br /> Passiveopening37-66 I 23-41 16-28 10-17 4 <br /> Passive opening 67-109 t 42-66 29-46 18-28 5 <br /> 1 <br /> Passive opening 110-163 1 67-100 47-69 29-42 6 <br /> Passive opening164-232 101-143 70-99 43-61 7 <br /> Passive opening 233-317 1 144-195 100-135 62-83 8 - <br /> Passive opening 318-419 1 196-258 136-179 84-110 9 <br /> w/motorized damper 1 <br /> Passive opening 420—539 259—332 180—230 111-142 10 <br /> w/motorized damper <br /> Passive opening 540-679 333-419 231-290 143-179 11 <br /> w/motorized damper <br /> Powered mekeup air >679 1 >419 >290 >179 . ' NA <br /> Notes: <br /> A. An equivalent length of 100 fee of round smooth metal duct is assumed.Subtract 40 feet for the exterior hood and ten feet for each 90-degree elbow to <br /> determine the remaining length of straight uct allowable. <br /> B. If flexible duct is used,Increase a duct diameter by one inch.Flexible duct shall be stretched with minimal sags.Compressed duct shall not be accepted. <br /> C. Barometric dampers are prohibl ed in passive makeup air openings when any atmospherically vented appliance is Installed. <br /> D. Powered makeup air shall be eleetricaity interlocked with the largest exhaust system. <br /> . <br /> Sections F <br /> r i <br /> Combustion air <br /> t required per mechanical code(No atmospheric or power vented appliances) <br /> 7 <br /> Passive(see INC Appendix 8,Worksheet 8.1) Size and type I <br /> Other,describe: I <br /> Explanation-If no atmospheric or power vented appliances are Installed,check the appropriate box,not required. if a power vented <br /> or atmospherically vented appliance installed,use iFGCAppendix E, Worksheet E-1(see below). Please enter size and type. Combus- <br /> tion air vent supplies must communicate with the appliance or appliances that require the combustion air. <br /> Section F calculations follow on the next 2 pages. <br /> RcI.CIV GU <br /> Page4of6 <br /> OCT 2 0 2016 <br /> CITY OF ORONO <br />