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Directbns-In wder to determine the makeup alr,Table 501.4.1 must be fllled out(see below).For most new instaNatfons,column A wfll be appropriate,howevar,ff <br /> atmospherkally vented appliances or solid fuel appllanca arc Insbped,use the approprlate column. Please note,if the makeup ak quantity Is neaative,no additlonal makeup afr <br /> will be rcqulred for ventilatbn,lf the wlue Is pasltive refer to Table 501.4.2 and size the opmf�.Transfer the cfm,size of opening and type(round,rectangular,flex w rigfd)to <br /> the last line of sectbn D. <br /> Table 501.4.1 <br /> PROCEDURE TO DETERMINE MAKEUP AIR QUANITY FOR EXHAUST EQUIPMENT IN�WELLINGS <br /> Additional combustan alr wNl be Wred far rnmbustion a liances see KAIR method ta cakulations <br /> One or muftiple power One or mukfple fan- One atmospherically vent Multiple atmospherkal- <br /> vent or direct vent ap-pliances assisted applknees and power gas or oi)appltance or one solld ly vented gas w NI applfarrces <br /> or no combus-Hon applia�es vent w direct vent appllances fuel appliance or solid fuel appliances <br /> Cdumn D <br /> Lolumn A Column B Column C <br /> 1• 0.15 0.09 0.06 0.03 <br /> a)prasure factor <br /> (cfm/s� <br /> b)eonditiwrod floor area(s�(induding 4068 <br /> unfinished buemeots) <br /> Estimated Haue Inflltradon(cfm):(la 6,)O <br /> x ibj <br /> 2.Exhaust Capadty <br /> a)continuous exhaust-onty vmdlatlon system E RV - 0 <br /> (cfm);(not appliwble to ba-Ianced ventilatb� <br /> systems such as HRV) <br /> b�clothes dryer(cfm) 135 135 135 135 <br /> c)80%ot largest exhaust ndnQ(dml, <br /> '�'��^h���'N 240 <br /> (not appliceble if recfrculadry{system w if <br /> powered makeup air is electrlcally interlocked <br /> d)80%of next largat exhaust rating Not <br /> (cim);bath fan typicairy Applicable <br /> (not applipble if recirculatirq{system w if <br /> powered makeup afr is electrically fMalocked <br /> Total Exhaust Gpacfty(cim); <br /> [2a+2b+2c+Zd] 375 <br /> 3.Makeup Air Quantfty(cfm) <br /> a)Wtal exhaust upadty(from above) 375 <br /> b)esdmated house inflftraUon(hom 610 <br /> above) <br /> Makeup Air quantity(cfm); <br /> [3a-3b) -235 <br /> (N value is neaaUve,no mskeup sir is needed) <br /> 4.For makeup Air OpeninQ Siting,refer <br /> toTable501.4.2 NOT REQ. <br /> A Use thls column if there are other tl�an fan-assisted w atmospherkally veMad gas w oil appliance or ff thero are no combustion applianca.(Power vent and direct vent <br /> applWnces may be used.) <br /> B.Use this column if Mere Is one fan-assisted appliance per v�tina system.(Appliances other than adn�pherlcally vented appllances may ako be included.) <br /> C.Use this column ff there fs onc atmospherically vented(other than farrassisted)gas or dl appliance per venting system w one solid fuel appliance. <br /> D.Use this cdumn if there are muftfple atmaspherlcally vented Qas or oil appUanca usinQ a common veM w H there are atrnospherically ve�ted Qas or oil appllances and solid <br /> fuk appliances. <br />