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Rirections-!n order to determine the makeup oir, Toble 501.3.1 must be filled out(see betpwj. For mast new installations, column A <br /> wi!(be oppropriate, however, if atmospherrcally venied oppliances orsolid fuet oppiiances are insialled, use the appropriote catumn. <br /> For exisiing dwelJings,see IMC 5Q1.3.3, Please npte, if rhe makeup air quontKy is negative,no additianaf makeup air wil!be re- <br /> quired for ventilation, if the value rs positive refer to Toble 501.3.2 trnd size che apening. Fransfer the cfm,size of opening and fype <br /> (round, rectongular,f/ex or rigid)to the(ast line of sectron D. The make-up arr supply must be installed per IMC 501.3.2.3. <br /> � Table 5Q1.3.1 <br /> � PROCEDURE TQ DETERMlNE MAKEUP AIR QUANITY FQR EXHAUST EQUIPMENT IN DWELLINGS <br /> (Additiona!combustion air wiil be required for combustion appliances,see KAIR method tor calculations} <br /> � � One ar multiple power One or multipie(an- One atmosphericaily vent Muitipie atmosphencal- <br /> � vent or direct vent ap assisted appliances and gas o�oii appiiance or ty vented gas or oii <br /> ( pliances or no combus- power vent or direct vent one.solid tuel appiiance appliances or soiid fuel <br /> tion appliances appiiances f appliances <br /> Column C Column D <br /> Coiumn A Column B <br /> 2. <br /> � a)pressure factor 0.15 0.�9 Q.05 Q.03 <br /> � (cfmJsf) <br /> b►ronditioned ffoor a�ea(sf)(inciuding .�,.��� <br /> unfinished baseme�ts <br /> Estimated House infittration�cfm);[la �� �� <br /> x Ibj <br /> 2.Exhaust Capacity <br /> a)continuous exhaust-oniy ventiiation /LZ r--� <br /> system(cfm);(not applicabie to ba- Z�'�'� � <br /> lanced ventifation systems such as , <br /> HRV} <br /> b}ciothes dryer(cfm� 135 13S 135 135 <br /> cj 8096 of largest exhaust rating{cfm); JJ <br /> Kitchen hood typicaily ��i^�1 <br /> L� ( <br /> (not apptfcabie if redreulating system � <br /> cr if powered makeup air is elecfrica�ly <br /> inferiocked and match to exhaust} ^ <br /> d}809'>of next Iargest exhaust rating <br /> � (cfrn); bath fan typicaliy ��� <br /> {nat appiicable if recirculating system <br /> or if powered makeup air is ele:.tricaily Applicabie <br /> interlocked and matched to exhaust) <br /> Totai Exhaust Gapacity(cfm}; —^� � <br /> [2a+2b+2c+2dj �� ( � <br /> F 3.Makeup Air Quantity(ctm) <br /> a)total exhaust capaciry(from abave} -�� � <br /> b}estimated hause intiftration(from j � <br /> above} ��' <br /> Makeup Air Quantity{dm); <br /> � (3a—3bj <br /> ' {if value is negative,na makeup air is ...... �2�j <br /> needed) <br /> 4.For makeup Air Opening Sizing,refer <br /> ` to Table 501.4.2 <br /> A. Use this column if there are other than famassisted or atmospherica�ty vented gas or oii appliance or if there are�o combustian appiiances.{Power vent <br /> and direct vent appliances may be used.) <br /> 8, Use this column if there is one fan-assis[ed appiiance per venting system.(Appliances other than atrnnsphericaily vented appiiances may also be in- <br /> cfuded.) <br /> C Use this column if there is orte atmosphencally vented(other than fan-assisted�gas or oii appGance per venting system or one solid fuel appliance. <br /> D. Use this coi�mn if there are mijlzipie atmosphericaily vented gas or oii appliances using a common vent or if there are atmosphe�iwlly vented gas or oil <br /> appliances and solid fuei appliances. <br /> Page 3 of 6 <br />