Interpretations - Mechanical Code
North Carolina Department of Insurance / Office of State Fire Marshall (Engineering)
302.5.2 Flexible Air Duct in Garage of Single Family Dwellings
303.3 Vanity Room Exhaust Fan
303.4 Protection of Appliances from Damage
303.8 Heating Requirements for Sunrooms
304.1 Compatible Properly Matched Partial Replacement of a
Split System Heat Pump or Air Conditioner
304.10.3 Masonry Used as a Mechanical Equipment Support
304.11 Guard Requirements for Rooftop HVAC Equipment
306.5 Access for Commercial Kitchen Roof Top Exhaust Fans
307.2.3 Auxilliary and Secondary Drain Systems
307.2.3(1) Auxilliary Drain Pan Size Requirements
308.6 Listed Type I Hood Clearance to Combustibles
312.1 Load Calculations
313 Carbon Monoxide Alarms in One-and-Two-Family Dwellings and Townhouses
401.4 Propane Regulator Vent Locations
402.1 Building Envelope Air Sealing - Utility Penetrations
403.1 Make-up Air to Gang Toilet Rooms
403.2 Make-up Ventilation Air Source Requirements
403.2.2 Duct Tightness Testing Requirement - Replacement Ductwork
403.3 Hookah Lounge Ventilation
403.3 Vapor Lounge or Bar Ventilation
403.3 Ventilation Rate Requirements
501.2.1 Propane Regulator Vent Locations
501.4 Bathroom Exhaust Duct Material for Dwellings and Townhouses
504.2 Dryer Duct Rated Assembly Membrane Penetrations
507.1 Listed Type I Hood Clearance to Combustibles
507.2.1 Type I Hoods - Finishing Ovens
507.9 Listed Type 1 Hood Clearance to Combustibles
507.16 Performance Test Requirements for Type I Hoods
507.16.2 Commercial Hood Certification
601.2 Make-up Air to Exit Access Corridors
601.3 Exit Enclosure Ventilation Systems
601.4 Exhaust Ducts in Plenum Spaces
602.1 Plenums Versus Habitable Rooms
602.2.1 Materials Exposed in Plenums of Dwellings and Townhouses
603.4 Bathroom Exhaust Duct Material for Dwellings and Townhouses
603.5 Bathroom Exhaust Duct Material for Dwellings and Townhouses
603.6 Clarification of Flexible Air Duct and Flexible Air Connector
603.9 Internal Sealants and Factory-Installed Gaskets
603.10 Installation of Factory-Made Flexible Duct on Ceiling Joists
603.10 Support of Flexible Factory-Made Air Duct
603.14 Flexible Air Duct and Air Connector Ground Clearance
603.18 Number of Returns for a Forced Air Heating or Cooling System
603.18 Return Air Requirements for Multi-Story Dwelling Unit
606.2.2 Smoke Detector for Common Supply and Return Air Systems
607.4 Fire Damper Access Requirements
607.6.2 Dryer Duct Rated Assemlby Membrane Penetrations
917.2 Commercial Range in Dwelling
917.3 Commercial Range in Dwelling
1101.1 Garage Heating and Cooling for a Dwelling
1101.1.3 Energy Requirements - Heating/Cooling Existing Screened and
Enclosed Porches and Decks with Mini Split System
1103.1.1 Programmable Thermostats
1103.6.2 Compatible Properly Matched Partial Replacement of a
Split System Heat Pump or Air Conditioner
1103.6.2 Partial Replacement of a Split System Heat Pump or Air Conditioner
302.5.2 Flexible Air Duct in Garage of Single Family Dwellings
303.3 Vanity Room Exhaust Fan
303.4 Protection of Appliances from Damage
303.8 Heating Requirements for Sunrooms
304.1 Compatible Properly Matched Partial Replacement of a
Split System Heat Pump or Air Conditioner
304.10.3 Masonry Used as a Mechanical Equipment Support
304.11 Guard Requirements for Rooftop HVAC Equipment
306.5 Access for Commercial Kitchen Roof Top Exhaust Fans
307.2.3 Auxilliary and Secondary Drain Systems
307.2.3(1) Auxilliary Drain Pan Size Requirements
308.6 Listed Type I Hood Clearance to Combustibles
312.1 Load Calculations
313 Carbon Monoxide Alarms in One-and-Two-Family Dwellings and Townhouses
401.4 Propane Regulator Vent Locations
402.1 Building Envelope Air Sealing - Utility Penetrations
403.1 Make-up Air to Gang Toilet Rooms
403.2 Make-up Ventilation Air Source Requirements
403.2.2 Duct Tightness Testing Requirement - Replacement Ductwork
403.3 Hookah Lounge Ventilation
403.3 Vapor Lounge or Bar Ventilation
403.3 Ventilation Rate Requirements
501.2.1 Propane Regulator Vent Locations
501.4 Bathroom Exhaust Duct Material for Dwellings and Townhouses
504.2 Dryer Duct Rated Assembly Membrane Penetrations
507.1 Listed Type I Hood Clearance to Combustibles
507.2.1 Type I Hoods - Finishing Ovens
507.9 Listed Type 1 Hood Clearance to Combustibles
507.16 Performance Test Requirements for Type I Hoods
507.16.2 Commercial Hood Certification
601.2 Make-up Air to Exit Access Corridors
601.3 Exit Enclosure Ventilation Systems
601.4 Exhaust Ducts in Plenum Spaces
602.1 Plenums Versus Habitable Rooms
602.2.1 Materials Exposed in Plenums of Dwellings and Townhouses
603.4 Bathroom Exhaust Duct Material for Dwellings and Townhouses
603.5 Bathroom Exhaust Duct Material for Dwellings and Townhouses
603.6 Clarification of Flexible Air Duct and Flexible Air Connector
603.9 Internal Sealants and Factory-Installed Gaskets
603.10 Installation of Factory-Made Flexible Duct on Ceiling Joists
603.10 Support of Flexible Factory-Made Air Duct
603.14 Flexible Air Duct and Air Connector Ground Clearance
603.18 Number of Returns for a Forced Air Heating or Cooling System
603.18 Return Air Requirements for Multi-Story Dwelling Unit
606.2.2 Smoke Detector for Common Supply and Return Air Systems
607.4 Fire Damper Access Requirements
607.6.2 Dryer Duct Rated Assemlby Membrane Penetrations
917.2 Commercial Range in Dwelling
917.3 Commercial Range in Dwelling
1101.1 Garage Heating and Cooling for a Dwelling
1101.1.3 Energy Requirements - Heating/Cooling Existing Screened and
Enclosed Porches and Decks with Mini Split System
1103.1.1 Programmable Thermostats
1103.6.2 Compatible Properly Matched Partial Replacement of a
Split System Heat Pump or Air Conditioner
1103.6.2 Partial Replacement of a Split System Heat Pump or Air Conditioner