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, <br /> Directions-In order W determine the makeup atr,Table 501.4.1 must be fllled oirt(see bebw).For most new installatlons,column A wlll be approprlete,however,if <br /> atrnospheriulty vented sppl"wnces or solid fuel appl'�ances are Installed,use the eppropriste coiumn.P�ease note,if the msloeup sir qwndty is negatNe,rw addlUonal mekeup air <br /> wfll be rcquircd for venUletion,ff the wlue is positive refer to Table 501.4.2 and size the opening.Transfer the cfm,size of openir�end type(round,rccLrg�ular,flez or rigid)to <br /> the last Ilne of secdon D. <br /> Table 501.4.1 <br /> PROCEDURE TO DETERMINE MAKEUP AIR QUANITY FOR EXHAUST EQUIPMENT IN DWELLINGS <br /> Additlonal combusUo�sir will be uirad fo�comburtion a Ifances see KAIR method fm celeulatlons <br /> One or mukiple power One or mukiple fan- One atmospherically vent Mukiple atrnospherial- <br /> veM or direct veM a�plknxs usisted appli�nces and power gas or oil�ppliantt or orx solid ly veMed ps or oil applknces <br /> or no combus-tlon eppllencas veM or direct vent applfances fuel appikrrce or wlid fuel appliances <br /> Columa D <br /> Column A Column B Column C <br /> 1• 0.15 0.09 0.06 0.03 <br /> a)pressuro tactor <br /> (�/� <br /> b)eordkioned floor srce(s�pncludir� <br /> unflnlshed b�semeMs� 9668 <br /> Fstimeted House Infllvatlon(cfm�:[la �,450 <br /> z 1bj <br /> 2.E�ust Gpeclry <br /> a)wntinuousexhaustonlyventlletionsystem ERV=O <br /> (dm);(not appllabk to ba-knced vendlat�on <br /> rystems such as HRV) <br /> b)dothes dryer(cfm) 135 135 135 135 <br /> c)80%of lergest exMust rating(cfm); <br /> Kkchen hood typically 240 <br /> (not appllcable If redrculating rystem or if <br /> powered makeup air k ekctrla�ly Irrterlaked <br /> d)9o%of nexc larqese ezn.u:c raar� Not <br /> (cfm):bath fan typlalty <br /> (not eppliceble If rccirculadng system or If APP�icable <br /> powered makeup elr Is electrically Irrcerlxked <br /> Total Exhaust Gpscity(dm); <br /> (2a+2b+2c+2d] 375 <br /> 3.Makeup Alr QuanNty(cfm) 375 <br /> e)toLl exhaust caPedty(from above) <br /> b)estimated house Irfikrat{on�from <br /> e�� 1,450 <br /> Makeup Air Querrcity(cfm); <br /> I�-3b] -1 ,075 <br /> (If velue Is negative,no mekeup Nr is needed) <br /> 4.For makeup Air Openi�g Slzing,refer <br /> toTable501.4.2 NOT REQ'D <br /> A.Ux this column Hthere arc other than fan-assisted or atmospheAcally vented gas or oil appliance or H there arc rw combustbn applknces.(Power vent and direct veM <br /> �ppliances mey be used.) . <br /> B.Use this column Ntheie is one fan-essistad eppliance per verrcing system.(Appflances other Lhen atrnospherkally vented sppliances may alao be included.) <br /> C Use this column ff therc is one atmospherially verKed(other tfian hnassisted)gas or oil eppli�nce per ventlng system or one wlid fuel applience. <br /> D.Uu this column if theie are mukfple atmospheMcally veMed gas or oil eppliences usiry�e common vent or If Uxre arc atrnospheHcally venud gas or oil appliances and solid <br /> fule eppliances. . <br />