Ky Hvac Journeyman Test Prep

Ozone cabinets and ozone gas-generator rooms for systems having a maximum ozone generating capacity of 1/2 pound (0.23 kg) or more over a 24-hour period shall be mechanically ventilated at a rate of not less than ______ air changes per hour: a: 5 b: 6 c: 10 d: 12 {Ans: b: 6 Refer: IMC Code 509.9.9}The termination point of exhaust outlets and ducts discharging explosive or flammable vapors, fumes or dusts to the outdoors shall be located with _______ from property lines a: 18 feet b: 24 feet c: 15 feet d: 30 feet {Ans: d: 30 feet Refer: IMC Code 501.3.1}Underground Ducts shall have a minimum slope of _______ per foot to allow drainage to a point provided with access: a: 1/2 inch b: 1/6 inch c: 1/4 inch d: 1/8 inch {Ans: d: 1/8 inch Refer: IMC Code 603.8.1}Commercial cloth dryer ducts shall have a minimum clearance of _____ to combustible materials: a: 9 inches b: 12 inches c: 8 inches d: 6 inches {Ans: d: 6 inches Refer: IMC Code 504.7}Where the vent vertical termination is located below an adjacent roof structure, the termination point of mechanical draft system shall be located at