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Directions-In order to determine the mpkeup air,Table 501.3.1 must be filfed out(see below). For mosr new installarions,column A <br /> wi11 be appropriate,however,if atmosphericaJly vented applivnces or solid fuel applionces are rnstaped,use the appropriate column. <br /> For existing dwellJngs,see 1Mt 501.3.3 Please note,i�the mokeup air quaniity is negarive,no additiona!makeup air wili be re- <br /> quired for veniilation,if the value is positive refer to Table 501.3.2 and size the opening. Transfer the cfm,size of opening and type <br /> (round,rectangular,flex or rigidJ fo ihe lost line of section D. The make-up air supply must be irtstalled per IMC 501.3.23. � <br /> I <br /> � <br /> Table 501.3.1 � <br /> PROCEDURE TO�ETERMfNE MAKEUP AtR QUANITY FOR EXHAUST EQUIPMENT 1N DWELLINGS i <br /> (Addittonal tombustion airwifl be required forcombustion appliances,see KAIR method forcalculatio�ss} <br /> One or muitiple power One or mulUple fan- One atmaspheRcaily vent Multlple atmosphericaf- � <br /> veM or dir¢ct vent ap- assisted appliances and gas or oil appl'iance or lyvented gas or oil i <br /> pliances or no combus- power veM or direcc vent one sblid fuef appfiance appliances or solid fuel � <br /> tion appifances apptiances appliances � <br /> Column C Column 0 � <br /> Cotumn A Column B � <br /> L I <br /> a)pressure factor <br /> 0•!5 0.09 0.06 0.03 ' <br /> (cfm/sfl � <br /> b)cond'rtioned floor area(sf�(including /� j <br /> unfrnlsfied basemeMs S (y � + <br /> Estimated House InfUt2tion(cfm):(1a � � ) � <br /> x 1bJ ( <br /> 2.Exhaust C�paaty ' <br /> al��tinuous exhauu-oniy ventllaclon <br /> system(cfm);(not appliobie to ba- I <br /> lanced veMilaGon systems such az � <br /> HRV} � <br /> b)clothes dryer(dm) �35 135 135 I35 I <br /> c)80%of largest exhaust rovng(cfm); � <br /> K'Rchen hood typip8y L� �� � <br /> (not applitabte if retirculating system <br /> or ff powered makeup air is electriplly � <br /> tnieriocked and match to exhaust) i <br /> �809L of next latgest exhaust roting � <br /> (cfm): bath fert typitally NOt � <br /> {notappliwbJe if recirculating rystem j <br /> orifpoweredmakeupatrlselecir3caly Appliqble � <br /> irrterlodced and matci�ed to exhaust}. ' <br /> Total Exhaust Capacity(cfm); i <br /> (2af 26+2c+2� � � <br /> s <br /> 3.MakQup Air QuaMity(tfm) : , <br /> a)toLai exhaust capaaty(from above) �j � i <br /> b)estimated hoine infiltrdtion(from �j � <br /> aboveJ v �j I <br /> Makeup Air Quantity(cfm}; ! <br /> [3a-3bJ /' • <br /> {if value Is negative,no makeup ai�is 1 � 3 rj i <br /> needed} i <br /> 4.Fpr makeup A]rOpening Sizing,refer i <br /> t0 TabM SOL4.7 ; <br /> A. ttse this cnlumn if there,are other than fan-assisted or atmospherically venied gas or o3f appliance or if there are no mmbusilon appiiances.(Power vent f <br /> and drectvent appliances may be used.) ' � <br /> 8. Use this column if there is one fan-assisted appliance per venting system.(Appliances other than atmosphericatlyventerl appliances may also be in- <br /> cluded.} i <br /> G Use ihis coiumn if there is one atmospheriplly vented(oiher than fan-assiste�gas or oil appfrance perveMing system or one soifd fuel appliance. <br /> D. Use this cotumn if there are�muftiple atmospheriwlty venied gas or oil appiiances using a common vent or Hihere are atmospfieripllyvented gas or oil <br /> appGances and solid fuel applfances. <br /> { <br /> 1 <br /> Page 3 of 6 <br /> �. ., �. . ,x��--,�z,���� w.,: �,�z.�:-,v�-�..-.�rt:�-��.�-c .�.-��.,�,_,.,-.-�,�--�-..-.,.-,., �:x..,.n �., a.. .. ._ -�., ., _.�-- ._�. _ ._r ...... .. _ .�. _ <br />