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EXHAUST SYSTEMS� • <br /> d <br /> TABLE 50'E.4.2 N <br /> MAKEUP AIR OPENtNG SIZING TABLE FOR NEW AND DaST[iVG DWELLlNG UNRS p <br /> k <br /> ONE MULTIA(.E APPLIANCES H <br /> ONE OA AdlliTiPLE POYVER ONE OR MUL.7IPLE FAN- ATMOSPH�RICALLY THAT N <br /> VENT OA DIRECT VENT ASStSTEDAPPLtANCES VENTED Q�AS OR O1L AAE A7iV10SPHERICALLY M <br /> APPLIANCBS�R NO AND POWER YENT OR APPLIANCE OR ONE YENTEO OkS OR�IL PASSIVE ASAICEU?AlA ►at <br /> C�h1BUST10N , DIRECTVENT SOUD FUEL APPLIANCE3 OR SOLi� OPEAtIA1Q DUCT r <br /> 7YPE OF OPENlN4 ApP�CES" APPLIAMC6S° APPI.IANCE° WELAPPLlANCFS° DIAMETEFi4F.a p <br /> OA SYS'i'EM (cfm) (ctm) (chn) (cfm) (lnches) • N <br /> Paasivc ope�ng 1-36 1-22 • 1-15 1-9 3 ra, <br /> Paasive openin� 37�66 � 23-41 16-28 10-17 4 µ <br /> Passive openfng ' 67-109 • 42�66 29-46 1&28 5 " <br /> 4 <br /> Passivc opea}ng 110-1b3 67-100 47-69 29-42 b � <br /> Passiva opeaing 169-232 101-143 70-99 • 43-61 � M <br /> Passive opening 233-317 144-145 100-135 62-83 8 � <br /> Passive ogcnmg • � N <br /> wi�motorized 318-419 196-258 136-179 $4-120 9 " <br /> N <br /> damper N <br /> M <br /> Pessioe opcaing � N <br /> ' withmotarized 420-539 259-332 180-230 il1-142 � 10 ,"', • <br /> damper N <br /> Passive opea3ng r�, <br /> vrith motorized 540-679 333-4-19 231290 143-179 11 x� <br /> �Pa � <br /> N <br /> M <br /> PO���� N <br /> >6'19 >419 >290 >179 � applic.able M. <br /> A.Use t}t�s column if then are othea ffian fna-essisded aa atnoaphe�caIIy veated oas ar ofl nppHunces or If th�e ata ao eombwtion appltm�cu. M <br /> $.Use 9�is calumn if rLa�e is oaa fan-assisted appltanca per veating system Other than atmosphericaIIy vented appGm�cu may also be iaclnded. � <br /> C.Use this colvma if thete is oae ahmospHedcally v�nted(other thsnfsa-ass3stedj gaa a�off c�pHmice per vmffing s}�taui or one aoHd Rul appliance. � <br /> D.Use this colamn if thece am mnitiple atmosphesicaliy veated gas ar oiE appiiaruea using a common veat ar ff thera sre strnosphert�alty vcnied gas or aal M <br /> . epptfanee.e and solid;thel applfmu�a. ' . M <br /> E.An squivaleat length of 100�eet of swmd smooth metal duct 3s assnmed.SubO�act 40 fect for the e�dos hood and t�feet fos each 9adegree eibow ro � <br /> deb�nine the zam�afng Iaagth af atraight duct aIlowsble. N <br /> F.If flwcibie dactis used,incteese tha duct diameberby one inch.Flaa'ble dnet ahall be atrebehed x�itb minlmai sags. M <br /> CQ B smmet�ic dsmpers sra proh�3ited ia passive maheup atr opeafngs whe�enY a�oapheslcaIIY ventad appitanee io instaIlnd. N <br /> Ii.Pawend makeup air ahail be aleehdcaIIy intGdacked with tLe Iaigest exhaust sYs�. M <br /> • 2015 MINNES01'A MECHANICAL CODE � 37 <br />