Minnesota Administrative Rules
Agency 151 - Labor and Industry Department
Chapter 1346 - MINNESOTA MECHANICAL AND FUEL GAS CODES
MINNESOTA MECHANICAL CODE
Part 1346.0603 - SECTION 603 DUCT CONSTRUCTION AND INSTALLATION

Universal Citation: MN Rules 1346.0603

Current through Register Vol. 49, No. 13, September 23, 2024

Subpart 1. [Repealed, 34 SR 537 44 SR 1085]

Subp. 2. [Repealed, 44 SR 1085]

Subp. 2a. [Repealed, 44 SR 1085]

Subp. 3. [Repealed, 44 SR 1085]

Subp. 4. [Repealed, 44 SR 1085]

Subp. 5. [Repealed, 44 SR 1085]

Subp. 6. [Repealed, 44 SR 1085]

Subp. 7. [Repealed, 44 SR 1085]

Subp. 8. Section 603.8.

IMC Section 603.8 is amended by adding a subsection to read as follows:

603.8.4 Drainage and insulation.

Underground ducts shall be insulated in accordance with amended IMC Section 604.1 and provided with drain tile around the perimeter of the duct system to prevent water intrusion. The top of the drain tile shall be installed at an elevation lower than the bottom of the underground duct system. The building official may approve an alternate drainage system if soil conditions are adequate.

Subp. 9.

[Repealed, 44 SR 1085]

Subp. 10. Section 603.18.

IMC section 603.18 is amended by adding a subsection to read as follows:

603.18.3 Adjustment of volume dampers. Volume dampers shall be adjusted to the required airflow of the system and locked in place. In finished or inaccessible locations, a friction-type register box may be used.

Statutory Authority: MS s 16B.59; 16B.61; 16B.64; 326B.02; 326B.101; 326B.106; 326B.13

Disclaimer: These regulations may not be the most recent version. Minnesota may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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