WAC 296-150C-1480. Ventilation and indoor air quality definitions

The International Mechanical Code, current edition, and the following definitions apply to the commercial coach ventilation and indoor air quality rules in this chapter. "Duct" is a conduit or passageway for conveying air to or from heating, cooling, air conditioning, or ventilation equipment, not including the plenum. "Plenum" is an air compartment that is part of an air-distributing system to which one or more ducts are connected. "Vent connector" is a pipe for conveying products of combustion from a fuel-burning appliance to a vent. "Water heater" is an appliance for heating water for domestic purposes other than for space heating.