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Catie Peck-Long Ext691 (8/10) O1/30/2015 09:04:25 AM -0600 1322.1204 Minneso�a Rule Page 2 of 9 � S-�' �� .�:, � � �:�;;�, �� -� c�� *.; � N1104.2.1.1 Ventnlation rate. The continuous ventilation system sha.11 be balanced in accordance with Section N1104.4.2. Ezception: If the local ventilation requirements according to IRC Section R303.3 are being ` met by the continuous ventilation system, it sha11 be capabie of operating at a rate not more than 100 percent greater than required by Sec#ion N1104.2.1. N1104.2.2 Intermittent ventilation. T'he difference between the total ventilation rate and the continuous ventilation rate shall be based on flow rates as designed or as installed. ' . , Table Nl 10'4.2 Total and Continuous Ventilation R.a.tes (in cfm) � Number of Bedrooms 1 2 3 4 5 6z Conditioned Total/ Total/ TotaU Total/ Tota1/ TotaU space' (in Continuous Continuous Continuous Continuous Continuous Continuous sq. ft.) 1000-1500 60/40 75/40 90/45 105/53 120/60 135/68 1501-2000 70/40 85/43 100/50 I 1 S/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/SU 115/58 130f65 145/73 160/80 175/8$ 3501-4000 110/55 I 25/63 140/70 I 55/78 170/85 1 SS/93 4001-4500 120/60 135/68 150/75 5 8 180/90 195/98 4541-5000 130/65 145/73 160/80 175/88 190/95 205/103 5001-5500 140/70 155/?8 170/85 185/93 200/100 215/10$ 5501-60002 150/75 165/83 180/90 195/98 210/105 225/113 ' Conditioned space includes the basement. 2 If conditioned space exceeds 6000 sq. ft. or there are more than 6 bedrooms, use Equation 11-1 from'Section N1104.2 to calculate tota.l ventila�ion rate. N1104.3 Ventitatiun system requirements. The mechanical ventilation system shall be one ofthree types: exhaust according to Section N1104.3.1; balanced, and HRV/ERV according to Section Nl 104.3.2; or other method according to Section N1104.3.3. N1104.3.1 Ezhanst sy�tems. Fans used to comply with the continuous ventilation part of the mechanical ventilation system shall: 1. meet the minimum continuous ventilation rate in Section Nt 104.2.1 at the point of discha.rge;