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Directions -In order to determine the makeup air, Table 501.4.1 must be filled out (see below(. Form ost new installations, column Awl II be appropriate, however, if <br />atmospherically vented appliances or solid fuel appliances are installed, use the appropriate column. Please note, if the makeup air quantity is negative, no additional makeup air <br />will be required for ventilation, if the value is positive refer to Table 501.4.2 and size the opening. Transfer the cfm, size of opening and type (round, rectangular, flex or rigid) to <br />the last line of section D. <br />Table 501.4.1 <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 <br />One or multiple fan- <br />One atmospherically vent <br />Multiple atmospherical - <br />vent or direct vent ap- pliances <br />assisted appliances and power <br />gas or oil appliance or one solid <br />ly vented gas or oil appliances <br />or no combus- tion appliances <br />vent or direct vent appliances <br />fuel appliance <br />or solid fuel appliances <br />Column D <br />Column A <br />Column B <br />Column C <br />1. <br />0.15 <br />0.09 <br />0.06 <br />0.03 <br />a) pressure factor <br />(cfm/sf} <br />b) conditioned floor area (sf) (including <br />4636 <br />unfinished basements) <br />Estimated Nouse Infiltration (cfm): (1a <br />69� <br />x 1b] <br />Z. Exhaust Capacity <br />a) continuous exhaust -only ventilation system <br />ERV=O <br />(cfm); (not applicable to ba- lanced ventilation <br />systems such as HRV) <br />b) clothes dryer {cfm) <br />135 <br />135 <br />135 <br />135 <br />c) 80% of largest exhaust rating (cfm); <br />720 <br />Kitchen hood typically <br />(not applicable if recirculating system or if <br />powered makeup air is electrically interlocked <br />d) 80% of next largest exhaust rating <br />Not <br />(cfm); bath fan typically <br />Applicable <br />(not applicable if recirculating system or if <br />powered makeup air is electrically interlocked <br />Total Exhaust Capacity (cfm); <br />o �� <br />[2a+2b +2c+2d] <br />V <br />3. Makeup Air Quantity (cfm) <br />855 <br />a) total exhaust capacity (from above) <br />b) estimated house infiltration (from <br />695 <br />above) <br />Makeup Air Quantity (cfm); <br />[3a —36] <br />(if value is negative, no makeup air is needed) <br />6 O <br />160 I <br />4. For makeup Air Opening Sizing, refer <br />6"Passive <br />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 vent and direct vent <br />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 also be included.) <br />C. Use this column if there is one atmospherically vented (other than fan -assisted) gas or all 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 oil appliances and solid <br />fule appliances. <br />