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Venti[at�on, Makeup and Combustion Air Calcutatians <br /> Submittal Farm Fa►r New Dwellings <br /> These blank submittai forms and instructions are availabie at the City of Chanhassen website and at City Hap. The compfeted form must be submit- <br /> ted in duplicate at the time of application of a mechanical pe�mit for new canstruction. Additional forms may be downfoaded and printed at: <br /> hftp:j/www.ci.chanhassen.mn.us/servjbuild.h[mf. <br /> SFteaddress �����,�� ^t� Date ��� ._� <br /> �..... <br /> Contractor � Compiefed "��� � <br /> � 4 (...., 8 L.,.'�a t..��+ �../ <br /> Section A <br /> Ventilation Quantity <br /> (Determine quantity by using Table N1104.2 or Equation il-1) <br /> Square feet{Conditioned area induding .�_ � t � <br /> Basement—finished or unfinishedj ���" Y Tatai required ventilation � � <br /> Number of bedrooms � Continuous ventilation �J <br /> Direciions-Determine ffte fota!ond continuous ventilation rate by eiiher using Tab/e N1104.2 or equatiQn II-1. <br /> The ta6/e and equation ore below. <br /> Table N2104.2 <br /> Total and Continuous Ventilatian Rates(in cfm) <br /> Number of Bedraoms <br /> 1 2 3 4 5 6 <br /> Conditioned space(in Totai/ Total/ Total/ Totai/ TotalJ Tota!/ <br /> sq.ft.) continuous continuous continuous tontinuous continuous continuous <br /> 1Q00-1500 60/40 75/4Q 9�/45 105/53 220/60 135/68 <br /> 1501-2000 70/40 85/43 Zao�so 115/58 13QJ65 145/73 <br /> 2Q01-2500 80/40 95J48 110/55 125/63 140/70 155/78 <br /> 2501-3000 90/45 105/53 _�2((if���..,,, 135/68 150/75 165/83 <br /> 3001-35Q0 100/SQ 115/58 130/65 145/73 160/&0 175/88 <br /> 3501-4000 120/55 125/63 240)70 155/78 170/85 185/93 <br /> 40Q1-45Q0 120J60 135/68 150/75 165(83 180/90 195/98 <br /> 4501-SD00 130/65 145/73 160/80 175/88 190/95 2Q5/103 <br /> 5001-5500 140J70 155/78 170/85 185/93 200j1Q0 215/108 <br /> 5501-6Q00 15Q/75 165/$3 180/40 195/98 210/105 225/113 <br /> Equation il-1 <br /> (0.02 x square feet of conditioned space)i(15 x(number of bedrooms+2)]=Total ventilation rate(cfm} <br /> Totat ventilation—The methanical ventilation system shafl provide sufficient outdoor air to equal the totai ventilation rate average, <br /> for each one-hour period according to the above table or equation. For heat recovery ventilators{HRV)and energy recavery ventila- <br /> tors(ERV)the average hourly ventilation capacity must be deterrnined in consideration of any reduction of exhaust or out outdoor <br /> air intake,or both,for defrost ar other equipment cycli�g. <br /> Continuous vertilation-A minimum of 50 percent of the total ventilation rate,but not less than 40 cfm,shal!be pravided,on a con- <br /> tinuaus rate average for each one-hour period. The portion of the rrtechanical ventilation system intended to be continuous may <br /> have automatic cyciing cantrots praviding the average fiow rate for each hour is met. <br /> G:�SAFETYWK1Vent-makeup-comb air submittal(2).docx Pagg 1 Of 6 <br /> �I � <br />