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TABLE 501.4.1 <br />PROCEDURE TO DETERMINE MAKEUP AIR QUANTITY FOR EXHAUST APPLIANCES IN DWELLING UNITS <br />A. Use this column if there are other than fan -assisted or atmospherically vented gas or oil gnpliances or ifthere are no cambustion appliances, <br />B, Use this colo= if there is one fan -assisted appliance per vendug system. Other than atmospherically vented appliances may also be inclnded. <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 oil <br />appliances and solid fuel appliances. <br />36 2015 MINNESOTA MECHANICAL CODE <br />MULTIPLEAPPLIANCES THAT <br />ONE OR MULTIPLE POWER <br />ONE OR MULTIPLE FAN- <br />ONE ATMOSPHERICALLY <br />ARE ATMOSPHERICALLY <br />VENT OR DIRECT VENT <br />ASSISTED APPLIANCES <br />VENTED GAS OR OIL <br />VENTED GAS OR CIL <br />APPLIANCES OR NC <br />COMSUSTION APPLIANCESA <br />AND POWER VENT OR <br />DIRECT VENT APPLIANCES" <br />APPLIANCE OR ONE <br />SOLID FUEL APPLIANCE° <br />APPLIANCES OR SOLID FUEL <br />APPLIANCES" <br />1. Use the Appropriate Column to Estimate House Infiltration . <br />a) pressure factor <br />0.15 <br />0.09 <br />0.06 <br />0.03. <br />(cfm/3f) <br />b) conditioned floorarea <br />(st <br />(including unfinished basements) <br />Es tirnated House <br />Infiltration (cfm): <br />— <br />— <br />[lax lb] <br />2. Exhaust Capacity <br />a) clothes dryer <br />135 <br />135 <br />135 <br />135 <br />b) 80%a of largest <br />— <br />— <br />— <br />exhaust rating (Cfm): <br />ZL <br />- <br />(uot applicable if recirculating systcra or it powered makeup air is electrically interlocked and matched to exhaust) <br />c) 80%n of next largest <br />1. . mot applicable <br />— <br />— <br />— <br />ekbaust rating (cfm): <br />(not applicable if recirculating system'arif Powered makeup air is electrically interlocked and matched to exhaust) <br />Total Exhaust Capacity <br />3515-1 <br />[2a+2b+2c] <br />3. Makeup Air Requirement <br />a} Total <br />Capacityity (from <br />-- <br />— <br />— <br />above) <br />b) Estimated House <br />Tnftl#ration (from— <br />above) <br />Makeup Aix <br />Quality (cfm). <br />[3a - 3b] <br />(if value is negative, no makeup air is needed <br />4, For Makeup Air Opening Sizing, refer to Table 501.4,2. <br />A. Use this column if there are other than fan -assisted or atmospherically vented gas or oil gnpliances or ifthere are no cambustion appliances, <br />B, Use this colo= if there is one fan -assisted appliance per vendug system. Other than atmospherically vented appliances may also be inclnded. <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 oil <br />appliances and solid fuel appliances. <br />36 2015 MINNESOTA MECHANICAL CODE <br />