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VAV-PRC011M-EN 13
Agency Certifications
Underwriter’s Laboratory (UL) 1995
Underwriters Laboratory is an independent testing agency that examines products and
determines if those products meet safety requirements. Equipment manufacturers strive to meet
UL guidelines and obtain listing and classifications for their products because customers recognize
UL approval as a measure of a safely designed product. VariTrane™ VAV air terminals are listed per
UL-1995, Heating and Cooling Equipment. The terminals are listed as an entire assembly.
National Fire Protection Association (NFPA)
NFPA 70
This standard is also known as the National Electrical Code (NEC). The Code gives standards for
installation of wiring and electrical equipment for most types of commercial and residential
buildings. It is often referred to in VAV air terminal specifications when fan-powered boxes, electric
heat or electric controls are included.
NFPA 90A
This standard does not speak directly to VAV air terminals but does discuss central system
considerations pertaining to a fire and/or smoke condition. The standard discusses safety
requirements in design and construction that should be followed to keep the air-handling system
from spreading a fire or smoke. The standard specifies practices that are intended to stop fire and
smoke from spreading through a duct system, keep the fire-resistive properties of certain building
structures (fire walls, etc.) intact, and minimize fire ignition sources and combustible materials.
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