Laserfiche WebLink
Directions-in arderto determine the makeup air,Table 501.3.1 must be filled out(see below). For most new installations,column <br /> A will be appropriate,however,if atmospherically vented appliances orsolidfuel appliances are installed,use the appropriate <br /> column.Far existhzg dwellings,see IMCBOLL 3 Please note,+f the makeup air quantity is negative,no additional makeup air will <br /> be required for ventilation,if the value is positive refer to Table 501.3.2 and size the opening. Transfer the cfm,size of opening and <br /> type(round,rectangular,flexor rigid)to the last line of section D. The make-up air supply must be installed per 1114C 5013.2.3. <br /> Table 501.3.1 <br /> PROCEDURE TO DETERMINE MAKEUP AIR QUANTTY FOR EXHAUST EQUIPMENT IN DWELLINGS <br /> (Additional combustion air will be required for combustion appliances,see KAIR method for calculations) <br /> One or multiple power One or multiple fan- One atmosphercallyvent Multiple atmospherically <br /> vent or direct vent assisted appliances and so or oil appliance or vented gas or oil <br /> appliances or no power vent or direct vent one solid fuel appliance appliances or sold fuel <br /> combustion appliances appliances appliances <br /> Column C Column D <br /> Column A Column 8 <br /> 1. <br /> a)pressure factor 0.15 0.09 0.06 0.03 <br /> (cfm/sf) <br /> b)conditioned floor area(NF)(including l op6g <br /> unfinished basements) a <br /> Estimated House infiltration(dm):(la /09p <br /> 2.Exhaust Capacity <br /> a)continuous exhaust-only ventilation A/A <br /> system(cfm);(not applicable to <br /> balanced ventilation systems such as <br /> HRV) <br /> b)clothes dryer(dm) 135 135 135 135 <br /> c)80%of largest exhaust rating(dm): 600 <br /> Kitchen hood typically <br /> (not applicable if redneuleting system <br /> or if powered makeup air is electrically ei(+ <br /> interlocked end match to exhaust) O� <br /> dl 80%of next brgast exhaust rating <br /> (cfm): bath fan typically Not <br /> (not app blelfreclrcuiatmg system Applicable <br /> or if powered makeup alr is electrically <br /> Interlocked and matched to exhaust) <br /> Total Exhaust Capadty(din); <br /> (2a+2b+lc+2d) 615 <br /> 3.Makeup Air Quantity(dm) L�!�s <br /> a)total exhaust capacity(from above) <br /> b)esestimated house Infiltration(fromabe) /O IV <br /> Makeup Air Quantity(dim); <br /> (3a-3b) <br /> (if value Is negative,no makeup air Is /15-needed) <br /> a.ser n+.eeeup war Op.nk a Signa,a A <br /> �/ <br /> to Table 501.4.2 �(/ <br /> A. Use this column Wthere are other than fan-assisted or atnt spherically vented gas or oil appliance or if there am no combustion appliances.(Power vent and <br /> dtieavant appliances maybe used.) <br /> B. Wet*column If there is one fan-assisted appliance perventing system.(Appliances other than atmospherically vented appliances may also be Included.) <br /> C. use this column if there is one atmospherrcalyvented(ado-than fan-assisted)gas oroll appliance perventing system or one solid fuel appliance. <br /> D. Use this column if there are multiple atmospherically vented gas or oil appliances using a common vent or of there are atmospherically vented gas or oil <br /> appliances and solid fuel appliances. <br /> :\formsWventMakupLombi►lri als04lsu.dooc Page 3 of 6 <br />