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''"`�,r <br /> � Directions-ln order to determine the mdkeup air,Table 501.4.1 must be filled out(!ee below). For most new installations,column <br /> A wili 6e appropriat�hovYever,if atmospherically vented vppliances or solid fuel appliances are installed,use the aApropriaie <br /> column.For exhtFng dwellln�s,see JMC502.4.3. Please note,if the makeup oir quqntity is negative,no additional makeup air will <br /> 6e r+equired for ventiMtlon,if the value is posltive refer to Table 3013.2 and size the opening. Tronsfer the cfm,size of opening and <br /> type{round,rectongulor,f lex or rigid)td,the last line of section D. The make-up airf+�pp�Y must be installed per IMC 501.4_23. <br /> Tabie 501.4.1 <br /> PROCEDURE 70 DETElkMINE MAICEUP AIR QUANfIY FOR EXHAUSI"EQWPMENT IN DWELUNGS <br /> AddiCwnal com ' air will be uired for o�nbustion a Ifantes see IR rnethod for c�kulations <br /> One Or muk3ple power One w multiple fan- atrnosphei�cally vent Muitiple atfiosphefiWNy <br /> vent or d'u�t vent assis[ed appiiaotes and �as or oil appiianee or v�ted gas or oil <br /> appfipnces or no po�arer vent or direct vent dne soiid fuei appltaoce appGances or solM#uel <br /> combustton appl'�a�ces applianas appNances <br /> Column C Column D <br /> Cotumn A Colum�B <br /> i.Use ti�e appropriate ootumn to <br /> astlmate housc hififiltratson 0.15 Q.09 O.Q6 OA3 <br /> a)pressure fador <br /> !�1 <br /> b)wt►ditioned floor area(sf)(induding `6J�p� <br /> unfiniahed basemen� -r7 0 <br /> Estimated House Infiluatioo(cfm):[Sa n 2 q <br /> xib �IJ 1 <br /> 2.Exhaust CaPadlY <br /> a)conttnuous ezhaust-�y ventilation //�/\ <br /> SY��l�);1noY applicaWe to /r��� ! <br /> balanced ventiWtion systems suth as � <br /> HR <br /> b)dothes dryer{cfm} 135 135 135 135 <br /> c18096 of iar8est exhaust retin�(cFm); �,p <br /> Kitthen hood typipily Q <br /> (not appllcable If recfrculeting system ��— <br /> or if powered makeup alr ls elecatceUy /��O <br /> interlocked and matd�to ext�a <br /> d)�96 of next ia+gest exhaust ratinH <br /> (cfn+l: bath fan typlcaily Not <br /> (not applicable if redmilating system Applicable <br /> or tf powereG makeup a1r is elecaically <br /> interlod�ed and matd�ed to exha <br /> T�1�►,a�c�,�c�a: �S <br /> �ia+t�+zc+wl <br /> 3.Maloeup Air Quar�ity(cfm) <br /> a)total exhaust capaolty(from above} g s S <br /> b1 estimaeea twuse ir�fUcration tfrom <br /> abrnre, ?3�?` <br /> Makeup Alr Quandt�r{dm); <br /> [3a—3b] <br /> {if aa(ue is negative,no,makeup ai�Is �/f� <br /> neodad) <br /> a,wr makaup�ur ope�ng sczjwg, 6' a�� � <br /> refertDTabte 501.4.2 <br /> c � <br /> q, U�[IUS COIUII'Iti if�lICfC 8fE pt1)Ef thHl1 fdrMaSlS[e�Of ed ro�hetically vent�d gas or oil appitance o1 If there are no cambustio�applian�s.(Power verrt end <br /> dkect�nt appiiances may be used.l <br /> 8. use this column i�there is ane fan,assisted apriiance per venting system•(App1'�ances other than ahi�oapt►eripliy vented appiiances may aiSo be induded.) <br /> C. Use this coiumn if there is one atmospher9wlly ven�ed(otMer than fan-assisted)gas or otl applhr�oe oer venN�sysDem or one solid fuel applian�_ <br /> D. U�thb Co4ann ff tllere are multiplE etmOsphlriCdliy renied gas ot o11 appHanoes t�siag a tommon vlent or if there aro atrnospherically ver�ted gas or o� <br /> appUances and�lid fuei applianoes. <br /> I <br /> I:\BWldingl�SafetYPoGdeslnformation\Gutrent�2tJ�51VentMakupCombAtrCa1s20u.doac Page 3 of 6 <br /> . . . <br />