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• 1322.1I04 RESIDENTIAL ENEAGY CODE 34 4p01-4S00 }20/b0 135/68 150175 165/83 )80/90 195/98 450]-5000 ]30/65 145/73 1 G0/80 l 7SJ l90l95 205/]d3 5401-5500 J40170 155/78 � 170185 l85/93 2Q0/100 215/108 SSdI-6000z l SOJ75 ]65/83 I 80/90 195/98 2]U/105 225I1 l3 ' Conditioned space includes the basement. ? If conditioned space exceeds bOQO sq. fl. ar there are more than 6 bedrooms,s�se Equation ]I-1 from Secfion NI 104.2 to c�lculate total ventilation rate. N1104.3 Ventilation system requirements. The mechanical ventilation system shap be one of three types: exhaust according to Section N]]04.3.1; balanced�and HRV/ERV according to Secdon N l]04.3.2; or other method according to Section N 1104.3.3. Ai1104.3.] Exhansi systems. Fans used to comply with the continuous ventilation part of the mechanical ventilation system shall: I. meef the minimum continuous ventilation rate in Section N]]04.2.1 at the pnint flf discbarge; 2. be designed and certified by the equipment manufacturer as capable of continuous operation a1 the rated cfm; , 3. have a maximum i.0 sone per HVI Standard 4l5 far 5urface mounted fans; 4. be permitted to use a required overcurrent protecdon device es a disconnect per the National Electric Code,incorporated by reference in Minnesota Rules,ch�pter 13 t5;and 5. comply with the Minnesoia Mechanical Code, chapter 1346�which may require additional make-up air. Fans used to eomply with the intermittent ventilation part af the mechanic�l ventilation syslem shall have a maximum 2.5 sone per HVl Standazd 915. Nl1�1.3.2 Balanced, and HRV/ERV systems. A heat recovery ventilator(HR� or energy recovery ventilatar(ERV)shall meet either: 1. the rec�uirements of NVl Standard 420,72 hours minus l3 degrees Fahrenheit cold weather test; or 2. cenified by a registered professional engineer and installeti per manufacturer's instaflation inswctions. An HRV or ERV intended to comply with both ihe continuous and total ventilation rate requiren�ents shall meet the rated design tapacity ot the continuous ventilation rate in Section N 1104.2.1 under low capacity and meet the total ventilation rate in Seciion Nl 104.2.2 under high capacity. Exception: The balanced, and HRV/ERV system may inciude eachaust fans to meet the intermittent ventilation rate. Surface mounted fans shall have a maximum 2.5 sones per HVI Standard 915. N1104.3.3 Other methods. Any mechanical ventilation system consisting of exhaust fans, supply fans, or a combination of both� complying with Section N]104, shal� be allowed. A mechanica]veniilation system specifically identified in Section NI 1Q4.3.1 orN]I04.3.2 shall not confiict with Sections Idl]04.3.1 and N1104.3.2. For fhe purposes of this section,the delivered Copyright m2009 by the Revisor of Statutes,State of Minnesota. All Rights Reserved.