{Re}habitat

This topic covers information related to dampers installed as part of HVAC systems during construction. Volume control dampers can be installed inside a duct or as part of a register or diffuser. They are adjustable devices that control the volume of air provided to a specific location within a structure. Smoke and fire dampers are installed inside a duct located in a firewall. They are automated devices that close to prevent the spread of fire.

This topic covers information related to flexible ducts installed as part of HVAC systems during construction. Flexible ducts are round in shape and can be made from plastic with glass wool insulation over metal coiled wire.

This topic covers information related to HVAC fans installed as part of HVAC systems during construction. HVAC fans can be one of several types; axial, centrifugal, power ventilators or air curtains. Axial fans in construction are commonly known as ceiling fans. Centrifugal fans are commonly found in mechanical units that distribute air. Power ventilators are used to draw air from a room or portion of a structure and remove heat and/or moisture, such as attic vents and gable vents. Air curtains are stand alone devices that generate a wall of air that separates two spaces, such as an entry from the outdoors to the indoors.

This topic covers information related to air terminal units installed as part of HVAC systems during construction. Air terminal units control or modify the amount and temperature of air being distributed to a specific zone in order to achieve a desired comfort level within the space. Air terminal units are either a constant or variable volume systems.

This topic covers information related to diffusers, registers and grilles installed as part of HVAC systems during construction. Diffusers, registers and grilles are finish elements of an HVAC system where air is supplied or removed from a space or building.

This topic covers information related to kitchen hoods installed in commercial kitchens during construction. Commercial kitchen hoods exhaust air to remove contaminates, provide make-up air to ensure adequate indoor air quality and where required have an integrated fire suppression system.

This topic covers information related to heating boilers installed during construction. Boilers are sealed vessels which apply heat to water or other fluids in order to create steam or vapors. The energy used to produce heat can be from either electric, gas, oil or solid-fuels. Boiler configurations include pot, fire-tube, water-tube, flash or sectional.

This topic covers information related to electric resistance furnaces installed during construction. Electric resistance furnaces convert electricity into heat through an electrical resistor. Electrical resistance heaters can be either radiative, convection, forced convection or radiant.