Laserfiche WebLink
plrections•!n order io determine the makeup alr, Table 501.3.1 must be filled out(see belowJ. For most new lnstaflations,column A <br /> wi/l be approprlate,however,!f atmospherlca!!y vented appliances or so/!d fue!applJances are lnstalled,use the appropriace cofumn. <br /> For ex/sting dwellings,see IMC 301.3.3. Please note,lf the makeup afr quan[Ity ls negatJve,no addltlonal makeup a!r wl11 be re- <br /> quired for vent!!atlon,if the value!s positJve refer to Ta6le 501.3.2 and slze the opening. Transfer the cfm,slze of opening and type <br /> (round,rectungular,flex or rlgidJ to the last llne of sectlon D. The make-up alr supply must be lnstalled per 1MC 501.3.2.3. <br /> Table 501.3.1 <br /> PROCEDURE 70 DE7ERMINE MAKEUA A!R QUANIN FOR EXHAUST EQUIPMENT IN DWELLINGS <br /> Additional combustfon airwlil be re uired for combustion a Ilances,see KAIR method for calculatlons <br /> One or multlpie power One or multlple fan- One atmosphe�ically vent Multlple atmospherteat• <br /> vent or direct vent ap• assisted appliances and gas or oll appllance or lyvented gas or oll <br /> pliances or no combus- power vent or direct vent one sdlld fuei appfiance appliances or soltd fuel <br /> ilon appllances appliances appllances <br /> Column C CAlumn 0 <br /> Column A Coiumn 8 <br /> 1. <br /> a)pressure factor 0�� 4.09 0.06 0.03 <br /> cfm sf <br /> b)conditioned floor area tsf�(Includi�g ��,J �'¢ <br /> unflnished basements % F <br /> Estimated House Inflltration(cfm):(1a $ �g. �} <br /> x ib� U <br /> 2.Exhaust Capadty <br /> aJ contlnuous exhaust-only ventllatlon <br /> system(cfmJ;(not applicable to be• <br /> lanced ventilatlon syscems such as <br /> HRv) <br /> b)clothes dryer(cfm) 135 135 135 135 <br /> c)8045 of largest exhaust rating(cfm); <br /> Kitchen hood typically � �� <br /> (rwt appltcable!f recirculating rystem <br /> or if powered makeup alr is elect�tcally <br /> �tedocked and match to ext+aust <br /> d)80St of next largest exhaust rating <br /> (cfm); bath fan typically Not <br /> (not applicable if recirculating system A IfCable <br /> w If powered makeup afr is eledriealty Pp <br /> interlocked and matched to exheust) � <br /> Total Exhaust Capacity(cfmj; /'/� <br /> 2a+2b+2c+2d1 C9 <br /> 3.Makeup Air Quantity(dm) ': <br /> a)total exhaust capaciry(from above� �j f � � <br /> b)estimated house Inflltrutlon(from } Q ��� <br /> above) � t> <br /> Makeup Air Quantity(cfm); � <br /> (3a-3bJ _, ZV�•� �" <br /> (if value Is negative,no makeup air is <br /> needed � <br /> 4.For makeup Alr•Opening Slzing,refer � <br /> to Table 501.4.2 � <br /> A. Use this column if there are other than fen-assTsted or atmospheAcally vented gas or oil appllante or if there are no combustlo�appNances.(Power vent , , <br /> and direet vent appliances may be used,) <br /> 8. Use this column if there is one fan•assisted appllance per ventlng system,(Appllances other than atmosphericallyvented appliances may afso be In- <br /> cluded.) <br /> C, Use thls column if there is one atmospherically vented(other than fan-assiste�gas or oil appliance perventing system or one solid fuel appliance. <br /> D. Use this column if there are multiple atmospherically venied gas or otl appllances using a<ommon vent or If there are atmospheriCatlyvented gas or oil <br /> appliances and soAd/uel appllances. <br /> � <br /> � <br /> Page 3 of 6 <br />