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Ventilation, Makeup and Combustion Air Calculations Submittal Form For New Dwelling I,�g,.,a These blank submittal forms and instructions are available at the City of Chanhassen website and at Citi Mail.4Th co lEf�Orm-must be submit- ted in duplicate at the time of application of a mechanical permit for new construction. Additional forms Matllifr ow�ded and printed at: http://www.ci.chanhossen.mn.us,lservlbuild.html. Site address Date [, s Contractor Completed Q� B Section A Ventilation Quantity (Determine quantity by using Table N1104.2 or Equation I1-1) Square feet(Conditioned area Including p Basement—finished or unfinished) Total required ventilation Number of bedrooms Continuous ventilation Q Directions-Determine the total and continuous ventilation rate by either using Table N1104.2 or equation 11-1. The table and equation ore below. Table N1104.2 Total and Continuous Ventilation Rates in cfm) Number of Bedrooms 1 2 3 4 5 6 Conditioned space(in Total/ Total/ Total/ Total/ Total/ Total/ sq.ft.) continuous continuous continuous continuous continuous continuous 1000-1500 60/40 75/40 90/45 105/53 120/60 135/68 1501-2000 70/40 85/43 100/50 115/58 130/65 145/73 2001-2500 80/40 95/48 110/55 125/63 140/70 155/78 2501-3000 90/45 105/53 120/60 135/68 150/75 165/83 3001-3500 100/50 115/58 130/65 145/73 160/80 175/88 3501-4000 110/55 125/63 140/70 155/78 170/85 185/93 4001-4500 120/60 135/68 150/75 165/83 180/90 195/98 4501-5000 130/65 145/73 160/80 175/88 190/95 205/103 5001-5500 140/70 155/78 170/85 185/93 200/100 215/108 5501-6000 1 150/75 165/83 180/90 195/98 210/105 225/113 Equation 11-1 (0.02 x square feet of conditioned space)+[15 x(number of bedrooms+1)]=Total ventilation rate(cfm) Total ventilation—The mechanical ventilation system shall provide sufficient outdoor air to equal the total ventilation rate average, for each one-hour period according to the above table or equation. For heat recovery ventilators(HRV)and energy recovery ventila- tors(ERV)the average hourly ventilation capacity must be determined in consideration of any reduction of exhaust or out outdoor air intake,or both,for defrost or other equipment cycling. Continuous ventilation-A minimum of 50 percent of the total ventilation rate,but not less than 40 cfm,shall be provided,on a con- tinuous rate average for each one-hour period. The portion of the mechanical ventilation system intended to be continuous may have automatic cycling controls providing the average flow rate for each hour is met. G:\SAFETY\JK\Vent-makeup-comb air submittal(2).docx Page 1 of 6