Sheet Metal Journeymen's Test (Answers 100% correct) 2026/2027

Sheet Metal Journeymen's Test (Answers 100% correct) 2026/2027 Horizontal 1 1/4" copper tubing shall be supported at what MAXIMUM distances? 6 ft The return air duct to a blower type warm air furnace is being replaced, how many sq. inches of free air are required per 1,000 BTUH of rated capacity of the furnace? 2" What device is installed to prevent a back draft occurring in an appliance? Draft Hood GIVEN: A machinery room ventilation system is to be installed. It terminates on the roof. An outside grille is serving an air conditioning system in the penthouse. What is the MINIMUM clearance between the discharge outlet for the vent system and the intake for the air conditioning system? 20' A chimney for residential type or low-heat appliances shall exceed at least __________ feet above the highest point where it passes through a roof of a building. 3 A pair of strap hangers at 2.2m spacing for a 1000 x 1000 mm duct should be __________ . 25.4 x 1.31 A chimney for a low-heat appliance must withstand a continuous flue gas temperature not exceeding __________ F°. 1000 A chimney for a medium-heat appliance shall extend at least __________ feet higher than any portion of any building within __________ feet. 10, 25 The termination point for a duct intended to exhaust flammable vapors shall be located a minimum of __________ feet from any property line. 30 At least __________feet of clearance shall be available between the access opening and the edge of the roof