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Directions-In order to determine the makeup air,Table 501.4.1 must be filled out(see below).For most new installationa,column A will be approp►fete,however,H <br /> atmospherfalty vented apptlances or solid fuel appliances arc insblled,use the approprfate�lum�. Plase note,if the makeup air quantity k negative,no additional makeup afr <br /> will be required for veMflation,H the value is positive refer to Table 501.4.2 and size the openf�.Transfer the cfm,s@e of opening and type(round,rectangular,flex or riQld�to <br /> the last line of sectton D. <br /> Table 501.4.1 <br /> PROCEOURE TO DETERMINE MAKEUP AIR QUANITY fOR EXHAUST EQUIPMENT IN DWELLINGS <br /> Additional canbustlon alr wHl be rc uired for combustion a Iisnces see KAIR method fw akulatbns <br /> One or mukiple power One or muRiple hn- One atmospherically vent Mukiple atmospherkal- <br /> veM ar dlreet veM ap-plianca assisted appllances and power gas w oil appllance or one solid ly vented gas w oil applianca <br /> a no combus-tion applianca vent or direct vent appllances fuel applfanco or soUd fuel applqnces <br /> Column D <br /> Cdumn A Column B Column C <br /> 1• 0.15 0.09 0.06 0.03 <br /> e)prasure fador <br /> (cfm/s� <br /> b)conditbncd floor srea(s�(inciuding <br /> unflnished basements) 4382 <br /> Estimated House InffltraUon(cfm):[ia <br /> x lb 657 <br /> 2.Exhaust CaWcitl/ <br /> a)continuous exhaust-only ventflaUon system E RV - 0 <br /> (dm);(not appliwble to ba-lanced veMllation <br /> systems such as MRV� <br /> b)clothes dryer(cFm) 135 135 135 135 <br /> c)80%of largest exhaust ndnQ(dml: <br /> Kkehen hood typkally 240 <br /> (�rot applicabla if rmcirculating system w if <br /> powered makeup air is electrially Interlocked <br /> d)SO%of next IarQest e�aust ra0ng NOt <br /> (crm);bath fan typically Applicabie <br /> (not applicable if recirculatin�systtem or tf � <br /> powered makeup alr is electrically iMerbcked <br /> otal Exhaust Gpaciry(cfm); <br /> ��+2b,2�.�a� 375 <br /> 3.Makeup Air Qwntfty(dm) 375 <br /> a)wtal exhaust capacky 4from above) <br /> b)estimated house infikrotion(fran 657 <br /> above) <br /> Makeup Air Quantity(cfm); <br /> [3a-3b� ^^^ <br /> �H value is negative,no makeup alr is needed) -L�L <br /> .For makeup Nr Openina ShUa,refer <br /> toTable501.4.2 NOT REQ. <br /> A Use this column If therc are other than fan-assisted or atmosphe►kaUy vetrted gas or ofl appliance or if thde are no combuatfon appllances.(Power vent and direct vent <br /> appllanca may be used,) <br /> B.Use this column If there k one fan-auirted appNance pa vmtir�system.(Appliances other Uian atm�pherleally vented appllances may also be included.i <br /> C.Use this column H there is one atmospherically vented(otha than farrassisted)Qas or oil appliance per vendt�system w one solid fuel appNance. <br /> D.Use tfiis column M thero ue mukiple atmospheriwlry veMed gas or oil apptia�ces usinQ a common vent or N there are atrnospherkal�y vented gas w oll applfances and solid <br /> fuk appliances. <br />