IMC Section 301: General Regulations
Scope: Covers energy utilization, plastic pipe fittings and components, third-party testing and certification, fuel gas appliances, equipment labeling, electrical and plumbing connections, fuel types, general repair, and blood hazards.
IMC Section 303: Equipment and Appliance Location
Hazard Avoidance: Regulates the placement of HVAC equipment and appliances to avoid hazards, especially in residential areas.
Subsections: Hazardous locations, prohibited locations, pit locations, equipment protection, and labeling.
IMC Section 304: Installation
Installation Requirements: Equipment and appliances must be installed as per approval terms, manufacturer’s instructions, and IMC code.
Subsections: Code conflicts, elevating ignition sources, hydrogen operations, installation in public and private garages, clearances, and guard areas.
IMC Section 305: Piping Support
Pipe Regulations: Covers different pipe materials, attachment to structures, support spacing, and protection from damage.
IMC Section 306: Access and Service Space
Accessibility: HVAC systems must be accessible for inspection, service, repair, and replacement without disabling fire resistance or removing permanent construction.
Subsections: Access in rooms, attics, under floors, on roofs, and on sloped roofs.
IMC Section 307: Condensate Disposal
Disposal Requirements: Liquid combustion by-products must be collected and discharged per manufacturer’s instructions.
Subsections: Concealed piping, drain systems, disposal discharge, pipe materials and sizes, auxiliary systems, traps, and pumps.
IMC Section 308: Clearance Reduction
Combustion Safety: Regulates clearances for chimneys, vents, kitchen exhausts, mechanical appliances, devices, and equipment.
Subsections: Listing and labeling, protective assembly, and clearance reduction methods.
IMC Section 309: Temperature Control
Heating Systems: Spaces for human occupancy must have heating systems capable of maintaining a minimum indoor temperature of 68°F.
IMC Section 310: Explosion Control
Safety Measures: Structures with explosion hazards must have explosion control measures per the International Fire Code.
IMC Section 311: Smoke and Heat Vents
Vent Installation: One-story buildings must have approved smoke and heat vents installed per the International Fire Code.
IMC Section 312: Heating and Cooling Load Calculations
Design Regulations: Additional code regulations for designing heating and cooling systems with respect to load calculations.
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