Laserfiche WebLink
Catie Peck—Long Ext691 (8/11 ) 02/24/2015 02:41 : 50 PM —0600 <br /> Directions-fn order to determine the makeup air, Table 501.3.1 must be filled out(see below). For most new tristaliorlons,column A <br /> will be appropriate,however,if atmospherically vented appliances or solid fuel appliances are installed,use the appropriate column. <br /> For existing dwellings,see IMC 501.3.3. Please note.,if the rnakeup air quantity is negative,no additional makeup air will be re- <br /> quired for ventilation,if the value is Posithee refer to Table 501.3.2 and size the opening. Transfer the cfm,size of opening and type <br /> (round,rectangular, lex orrigid)to the last line ofsectionD. 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 QUAN17Y FOR EXHAUST EQUIPMENT IN DWELLINGS <br /> (Additional cornbtistion iii,will be required for combustion appliancus,see KAIR method for calculation!;) <br /> —---------- ................ <br /> One or multiple power One or Multiple fan- Oricatmospherically vent Multipleatmosphencal- <br /> vent or direct vent ap- assisted appliances and gas or oil appliance or ly vented gas or oil <br /> pliances or no combus- power vent or direct vent one.solid fuel appliance appliances or solid fuel <br /> tion appliances appliances appliances <br /> Column C COlUrTin D <br /> Column A Column B <br /> a)pressure factor D-03 <br /> b)conditioned floor area(sf)(including <br /> unfinished basements) <br /> Estimated House infiltration(cfm):(la <br /> x1.6) J .._..._.—_.._•... <br /> ........................ .......... <br /> 2.Exhaust Capacity <br /> a)continuous exhaust-only venthlatlon <br /> system(cfm);(not applicable to ba. <br /> lanced ventilation systerns.r.uch as <br /> b)clothes dryer(cfm) 135 135 135 135 <br /> c)80%of largest.exhaust rating(cfryl); <br /> Kitchen hood typically <br /> (not applicable if recirculating systprn <br /> or if powered makeup air is electrically <br /> interlocked and match to exhaust) <br /> ............. .......................... <br /> next largest exhaust rating <br /> (cfm); bath fan typically Not <br /> {not applicable if recirculating system <br /> or if powered makeup air is electrically Applicable <br /> interlocked and matched to exhaust) <br /> ........... <br /> Total <br /> Fxha ust Ca Pad ty(cfm); <br /> I Makeup Air Quantity(cfm) <br /> a)total exhaust capacity(from above) <br /> ..................... <br /> estimate(l hr3uw infiftf ation(frorn <br /> above) <br /> ............. ...................... <br /> Makeup Air Quantity 11 <br /> Da­3b] <br /> (If vi,41up is negative,rin ririakotupair is <br /> needed) <br /> 4-For makeup Air op.en.irg <br /> sizing,refer <br /> ......L <br /> A. Use this colurnn if there are other than fan--assisted or atmospherically vented gas or oil appliance or if there are no combustion appliances.(Power vent <br /> and direct vent appliances may be usecl.) <br /> B. Use this col urnri if there is one fan assisted appliance per venting system,(Appliances other than atmospherically vented appliances may also be in- <br /> duded.) <br /> C Use this column if there is one @tiriosphei 1(.ally vented(other duan fan-dsslsted)gas err oil appliance per venting system or one solid fuel appliance!. <br /> D. Use this column it there are rrr.flliple.atmosp hericaliV vented gas or oil appliances using a common vent or if there are, atmosphertcaliy vented gas or oil <br /> appliances and solid fuel appliance.5. <br /> Pap 3 of 6 <br />