ICC M3 flashcards
ICC M3 · Build recall with a focused review session.
32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- Permit exemption
- Ordinary repairs and routine maintenance that do not alter the mechanical system's size, location, or type generally do not require a mechanical permit.
- Construction documents
- Scaled drawings and specifications submitted with a permit application that show the size, location, type, and details of the mechanical equipment and distribution systems.
- Rough-in inspection
- An inspection performed after the mechanical system is installed but before concealment by building finishes, verifying compliance before work is covered.
- Stop-work order
- A written notice issued by the code official that halts work on a project because the work is unsafe, noncompliant, or proceeding without required permits.
- Listed material
- Equipment or material included in a published list by an approved agency that maintains periodic inspection of production and certifies compliance with a standard.
- Board of appeals
- A body established by the adopting jurisdiction that hears and decides appeals of decisions made by the code official under the mechanical code.
- Garage appliance ignition height
- Ignition sources of appliances installed in private garages must be elevated at least 18 inches above the floor unless the appliance is listed for garage installation.
- Equipment working clearance
- A clear working space of at least 30 inches wide and 30 inches deep is generally required in front of heating and cooling equipment, or the larger manufacturer clearance.
- Condensate drain trap
- A trap on a cooling coil drain that prevents air from being drawn through the drain line, with discharge to an approved receptor.
- Secondary drain protection
- A secondary drain line or an overflow pan equipped with a switch that shuts off the unit when condensate accumulates, protecting the building from water damage.
- Return air prohibition
- Return air must not be drawn from bathrooms, kitchens, closets, or from one dwelling unit to serve another dwelling unit.
- Attic appliance access
- Appliances installed in attics require a permanently installed walkway or service platform and a lighting outlet near the service access point.
- Outdoor unit clearance
- Outdoor condensing units must be installed with airflow and service clearances specified by the manufacturer's listed instructions.
- Bathroom exhaust discharge
- Exhaust from bathrooms and toilet rooms must terminate outdoors and must not discharge into attics, crawl spaces, or other interior areas.
- Dryer duct fasteners
- Screws or fasteners that penetrate the interior of a clothes dryer exhaust duct are prohibited because they can collect lint and block airflow.
- Dryer duct termination
- Clothes dryer exhaust ducts must terminate outdoors with a backdraft damper and within the developed length limits established by the manufacturer and code.
- Type I hood
- A commercial kitchen hood designed to capture grease and smoke, requiring grease duct enclosure, clearance to combustibles, and a fire suppression system.
- Type II hood
- A commercial kitchen hood for capturing heat, moisture, and odors without grease or smoke, and it does not require grease duct protection.
- Makeup air
- Air supplied to replace air removed by exhaust systems, provided in quantities that maintain required pressure relationships and safe appliance draft.
- Hazardous exhaust separation
- Exhaust ducts conveying hazardous or noxious contaminants must not connect to other exhaust systems and must discharge where building openings are protected.
- Duct insulation vapor retarder
- Ducts in unconditioned spaces require insulation to the specified R-value with a vapor retarder on the exterior to limit condensation.
- Flexible duct support
- Factory-made flexible duct must be supported at intervals not exceeding 4 feet and installed without sharp bends or compression that restricts airflow.
- Fire damper
- A listed device installed in a duct penetration of a fire-rated assembly that closes on fire exposure to maintain the assembly's fire resistance rating.
- Outdoor combustion air openings
- Two permanent openings to outdoors are sized using the code's free-area ratio applied to the total Btu/h input rating of appliances in the space.
- Indoor combustion air volume
- Where combustion air is drawn from indoors, the space must meet the minimum volume per Btu/h of appliance input or be provided with outdoor air.
- Duct sealing
- Duct joints, seams, and connections must be sealed with approved materials, and tapes and mastics must be listed for the application.
- Vent connector slope
- A vent connector must slope upward toward the chimney at the code-required rate and must not be smaller than the appliance flue collar.
- Category I appliance
- A gas appliance that operates with negative vent pressure and produces flue gases that stay above the dew point, vented through a properly sized vertical vent.
- Category IV appliance
- A gas appliance that operates under positive vent pressure and produces corrosive condensate, requiring listed positive-pressure venting.
- Vent termination height
- The required height of a vent termination above the roof is determined by the roof pitch and its proximity to walls, dormers, and air intakes.
- Refrigerant safety group
- A classification of refrigerants by toxicity and flammability that determines allowable charge quantities and required safety provisions in occupied spaces.
- Refrigeration machinery room
- A room containing refrigeration equipment that must meet ventilation, refrigerant detection, and access requirements based on refrigerant class and charge.