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Dlrettlons-!n order ta defermine the makeup alr,Table 501.3.1 musi be f!!!ed oui(see beJawJ. For most new installaxlons,coJumn A <br /> w!!!be approprlate,howevei,!f ptmospherically vented appllances orsolid fuel appliances are Tnsta!led,use the ppproprlate column. <br /> for existing dwellJngs,see IMC 50t.3.3. Please note,!j the mpkeup a1�quantity!s negative,na addltional makeup a!r wlll be re- <br /> quired for ventl/atlon,!j the value Is posltive refer to Table 501.3.2 and sTza the openlnq. Transfer fhe cfm,size of'opening and type <br /> (round,rectangular,flex or rigldJ to the last flne of sectian D. The make-up aJr supply must be Jnsta!!ed per fMC 501.3.2.3. <br /> Tabie 501.3.1 <br /> PROCEDURE TO DETERMINE MAKEUP AIR QUANITIf FOR EXHAUST EQUIPMEM'IN DWELUNGS <br /> (AddiUonal combustion air will be raquired for rnmbustlon a Ilances,see KAIR method for caiculaUons <br /> One or multiple power � One or multiple fan- One etmaspherfcalty veM Multiple atmospherical- <br /> vent or dkea vent ap- asslsted appliantes a�d gax or oil appliance or ly vented gas or vil <br /> � pUances o�na combus- power vent or dlrect vent one so8d fuel appliance appliances or soNd fuel <br /> Uon appitanccs appliancas appliances <br /> Column C Column D <br /> Column A ColUmn 8 • <br /> 1. <br /> a)pressure factar 0.15 0.09 0,06 0.03 <br /> dm/ <br /> b)wndiHoned floor area{s�(Including <br /> u�fln(shed bascmenu �� <br /> Fstimated House Inflltntlon(dm):(la <br /> x ib <br /> 2.Exhaust Capadty - <br /> a)conUnuous exhaust-onlyvendlaGon <br /> system(cfmJ;(nat appilcabie ta ba- //l'1 <br /> lanced ventllation systems such as `( ��� <br /> HR <br /> b)dothes dryer(dm) 13S 13S 135 135 <br /> c)6076 of iargest exhaust raNng(cfm); <br /> Kkchen hood typlcally � / <br /> (not applicable ft redreulating system �--� <br /> or H powered makeup air is ekctHcally � <br /> interlodced and match to exhau <br /> dj 809G of nrx!largest exhausi rottng <br /> (cfm); baYh tan typlcally Not <br /> (nat ap�fkable iF recirculating system <br /> or if powered makeup air is clecMcally Appltcable <br /> inte�lodced and metehed to exbaust <br /> Totai Fad�aust Capaclty(dm); �� <br /> (2a+2b+2c*2d) <br /> 3.Makeup Air Quantity(dmj <br /> a)wtal exhaust capacity((com above) ��� <br /> b)estimated house iniiltratlon{from G 3 <br /> above <br /> Makeup Air Quandiy(dm); <br /> [3a—3b) /���� <br /> (if value is negative,no makcup air Is 6� <br /> needed <br /> 4.Far makeup Afr Opening Sltfag,refcr <br /> to Table 5o1.a.z <br /> _ <br /> _ _...._._...... _. <br /> ----h: -��•---- sei Ts•oo umn if ere 8re other than fan-assisteci or atmospherltally veoicd gas or oil apphanee or ii�fiere are no combustfon appllances.(Powet veet <br /> and direct vent appltances may be used,) ' <br /> B. Use.lhls column I(there is one fan•assisted appliance per venting system.(Appliances other than atmo;phericaliy vented appilances may alw be M- <br /> cluded.) <br /> C, Use this colum�if there is one atmospherically vented{other than fanassfsLed)gas or di apptlance per vendng system or one solid fuel appliance. <br /> D. Use this column H there are muttlple atmosphe�ically ventad gas or otl appliancea using a common vent or If there a�e atmospherkelly vented gas or oll <br /> appl{ences and solld fuel appllances. <br />