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• <br /> M <br /> N <br /> M <br /> N TABLE 501.4.1 <br /> H PROCEDURE TO DETERMINE MAKEUP AIR QUANTITY FOR EXHAUST APPLIANCES IN DWELLING UNITS <br /> M <br /> NMULTIPLE APPLIANCES THAT <br /> N - ONE OR MULTIPLE POWER ONE OR MULTIPLE FAN- ONE ATMOSPHERICALLY ARE ATMOSPHERICALLY <br /> VENT OR DIRECT VENT ASSISTED APPLIANCES VENTED GAS OR OIL VENTED GAS OR OIL <br /> M APPLIANCES OR NO AND POWER VENT OR APPLIANCE OR ONE APPLIANCES OR SOLID FUEL <br /> N COMBUSTION APPLIANCES" DIRECT VENT APPLIANCES'? SOLID FUEL APPLIANCE` APPLIANCES° <br /> ,41 1.Use the Appropriate Column to Estimate House Infiltration <br /> . . <br /> M a)pressure factor 0.15 <br /> N ( - 0.09 0.06 0.03. <br /> M <br /> M b)conditioned floor _34Zr <br /> N area(sf) — <br /> M <br /> M (including unfinished basements) <br /> M Estimated House <br /> M Infiltration(cfm): — �.[�(,� — _ <br /> N [la x Ib] • (�(f <br /> M , <br /> l',,,,' 2.Exhaust Capacity - <br /> .M a)clothes dryer 135 135 135 <br /> M b)80%of largest <br /> 135 <br /> M exhaust rating(cfm): — 4C61D — — — <br /> N <br /> M (not applicable if recirculating system or if powered makeup air is electrically interlocked and matched to exhaust) <br /> M c)80%of next largest <br /> M exhaust rating(Lau): not applicable 1t. ,•r - - — <br /> M (not applicable if recirculating system or if powered makeup air is electrically interlocked and matched to exhaust) <br /> N <br /> M Total Exhaust Capacity <br /> N . . <br /> M [2a+2b+2c]m (cfm): 6 - a,:(F, <br /> Al <br /> M 3.Makeup Air Requirement <br /> N • <br /> M a)Total Exhaust t5- .M Capacity(from ( — <br /> N — — <br /> M above) • <br /> N b)Estimated House <br /> M Infiltration(from `� — _ <br /> N <br /> M above) — <br /> M Makeup Air <br /> M Quality(cfm): -fl-- <br /> l _ — — — <br /> M [3a 3b] j / <br /> N <br /> M (if value is negative,no makeup air is needed . <br /> M 4.For Makeup Air Opening Sizing,refer to Table 501.4.2. <br /> N . <br /> til <br /> A.Use this column if there are other than fan-assisted or atmospherically vented gas or oil appliances or if there are no combustion appliances. <br /> M B.Use this column if there is one fan-assisted appliance per venting system.Other than atmospherically vented appliances may also be included. <br /> aN+ C.Use this column if there is one atmospherically vented(other than fan-assiited)gas or oil appliance per venting system or one solid fuel appliance. <br /> N 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 /> N appliances and solid fuel appliances. <br /> 36 2015 MINNESOTA MECHANICAL CODE <br /> • <br /> J <br />