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' RECEIVED , , <br /> ' i <br /> . AUG 21 �015 , "� <br /> CITY OF OROiVO <br /> Dlrectlons-In order to determine the makeup alr,Table 501.3.1 must be Jllled out(see belowJ. for most nawlnsra!latlons,column A <br /> wlll be approprlate,however,!f otmospherically vented appliantes or sofid fue/app//dnces are lnstaNed,use the appropr/ate co/umn, <br /> For exlst/nq dweqings,see/MC 501.3.3. P/eose nole,lj the makeup a1r quanHty ls negative,no addltlona/makeup alr wlU be re- <br /> qulred for veni!latlon,!f the value Is positive refer to 1'able 501.3.2 and slae the opening. Trpnsjer ihe cfm,slze of opening and type <br /> (round,rectangular,flex or rigldJ to the lost line of sectlon D, The make-up alr supply must be Instailed per IMC 501.3.2.3. <br /> Table 501.3.1 <br /> PROCEDURE 70�E7ERMINE MAKEUA AIR QUANIN FOR EXHAUST EQUIPMENT IN DWELLINGS <br /> Additlonal combustbn alr wNl be re uired forcombustion a tances,see KAIR method for calarlattons <br /> One or multiple power One or multiple fan- One atmospheAcally vent Multlpie atmospherlal- <br /> veM or dlrect vent ap• ossisted apptlances and gaa or ai appliance or lyvented gas or afl <br /> pNances or no combus- power vent or dlrect vent one sOAd fuel appllance appMances or solid fuel <br /> tb�appUances appliances appUances <br /> Column C Co�mn 0 <br /> Column A Column 8 <br /> 1. <br /> a)pressure factw 0.15 0.09 0.06 0.03 <br /> b)eonditbned fbor area�sn(induding --7 O Z� <br /> unflMahad basements �� <br /> Estlmated House Inflltration(cfm);(la <br /> xib � 1 � �� <br /> 2.Exhaust Capadty <br /> a)contlnuous exhaust-only ventllacbn <br /> system(dm);(not applkaWe to ba• <br /> latceed veiNilaqon systems such as <br /> HR <br /> b)clothes dryer(dm) 135 135 13S 135 <br /> t)8U%of tergest exhaust ratlne(cfm); r� <br /> Kltchen hood typkally ) ; �V <br /> (not applicable if retirculating system U <br /> or if powered makeup air is electrtwlly <br /> intedocked and match to exhaust <br /> d)80X of next largest exhaust reting <br /> (efm);bath fan typically Not <br /> (rat applkable it reckculating system <br /> or If powared makeup air Is elearkaly APp���able <br /> interlodted and matched to exhawt <br /> 7otal F.l�haust Capacity(dm); /'^� � <br /> +26+2c+2dJ C� <br /> 3.Makaup Alr Quaetity(dm) <br /> 6�r s � <br /> a)total exhaust capaciry(from above) <br /> b)eslimated house inflkntbn(from + S � <br /> above 1 � � <br /> Makeup Ak Quantlry(dm} <br /> (3a-3b) Ci �p <br /> pf value Is negative,no makeup eir is � a <br /> needed <br /> 4.For makeup A1rOpeMng Slzing,refer <br /> to Table 501.4.2 <br /> N. Use tht�column if there are other than fan•asskted a atmospherically veated gas or oll appitance or if there are no combustbn applisnces.(Power vent <br /> and direct vent appliances may be used.) � <br /> e. Use thls cdumn It ihere Is one(an-assisted appliance per ventMg system.(Appllances other than atmospf�erlallyvented appllances may also be In- <br /> tluded.j <br /> C. Use thls column if there Is ona atmaspherlcaUy vented(other than hn-assisted)gas or oN app8ance per venGng system or o�u sdid tuel epplianee. <br /> D. Use this column If there are multiple atmospheriwily vented gas or op appliances using a common vent or If thare are etmosphariqlly veMed ga5 Or al <br /> appliances a�xl sodd fuef apppances. <br /> ! <br /> Page 3 of 6 <br />