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Section E <br /> Make-up air <br /> Passive (determined from calculations from Table 501.3.1) <br /> El Powered(determined from calculations from Table 501.3.1) <br /> n Interlocked with exhaust device(determined from calculation from Table 501.3.1) <br /> Other,describe: None needed <br /> Location of duct or system ventilation make-up air: Determined from make-up air opening table <br /> Cfm Size and type(round,rectangular,flex or rigid) <br /> Directions -In order to determine the makeup air, Table 501.3.1 must be filled out(see below). For most new <br /> installations, column A will be appropriate, however, if atmospherically vented appliances or solid fuel appliances are <br /> installed, use the appropriate column. For existing dwellings,see IMC 501.3.3. Please note, if the makeup air quantity <br /> is negative, no additional makeup air will be re-quired for ventilation, if the value is positive refer to Table 501.3.2 and <br /> size the opening. Transfer the cfm, size of opening and type (round, rectangular, flex or rigid) to the last line of section D. <br /> The make-up air supply must be installed per IMC 501.3.2.3. <br /> Table 501.3.1 <br /> PROCEDURE TO DETERMINE MAKEUP AIR QUANITY 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 atmospherically vent Multiple atmospherically <br /> vent or direct vent assisted appliances and gas or oil appliance or vented gas or oil appliances <br /> appliances or no power vent or direct one solid fuel appliance or solid fuel appliances <br /> combustion appliances vent appliances <br /> Column A Column B Column C Column D <br /> 1. 0.15 0.09 0.06 0.03 <br /> a)pressure factor(cfm/sf) <br /> b)conditioned floor area(sf) 8221 <br /> (including unfinished basements) <br /> Estimated House Infiltration(cfm): 1 233 <br /> [1a x 1b] <br /> 2.Exhaust Capacity <br /> a)continuous exhaust-only N/A <br /> ventilation system(cfm);(not <br /> applicable to balanced ventilation <br /> systems such as HRV) <br /> b)clothes dryer(cfm) 135 135 135 135 <br /> c)80%of largest exhaust rating(cfm); <br /> Kitchen hood typically(not applicable .8X600=480 <br /> if recirculating system or if powered <br /> makeup air is electrically interlocked <br /> and match to exhaust) <br /> d)80%of next largest exhaust rating <br /> (cfm); bath fan typically(not Not <br /> applicable if recirculating system or if <br /> powered makeup air is electrically Applicable <br /> interlocked and matched to exhaust) <br /> Total Exhaust Capacity(cfm); 515 <br /> [2a+2b+2c+2d] <br /> 3.Makeup Air Quantity(cfm) 515 <br /> a)total exhaust capacity(from above) <br /> b)estimated house infiltration(from 1233 <br /> above) <br /> Makeup Air Quantity(cfm); _� <br /> [3a—3b](if value is negative,no <br /> makeup air is needed) <br /> 4.For makeup Air Opening Sizing, None needed <br /> refer to Table 501.4.2 <br /> A. Use this column if there are other than fan-assisted or atmospherically vented gas or oil appliance or if there are no combustion appliances.(Power <br /> vent and direct vent appliances may be used.) <br /> B. Use this column if there is one fan-assisted appliance per venting system.(Appliances other than atmospherically vented appliances may be included.) <br /> C. Use this column if there is one atmospherically vented(other than fan-assisted)gas or oil appliance per venting 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 if there are atmospherically vented gas or <br /> oil appliances and solid fuel appliances. <br /> 3 <br />