HVAC journeyman prep test Exam Guide 2024 Questions and Answers

HVAC journeyman prep test Exam Guide 2024 Questions and Answers A listed smoke damper designed to resist the passage of smoke shall be provided at each point in a duct or air transfer opening penetrates a: (A)smoke barrier wall (B)fire rated wall (C)interior wall (D)corridor wall - CORRECT ANSWER-Corridor wall (IMC 607.5.4) Flexible air duct may be what length? (A)10' (B)2' (C)14' (D)6' - CORRECT ANSWER14' (IMC 603.6.1.1) The maximum vertical distance between the front lower lip of a canopy Type 1 hood and the appliance surface shall be ____ feet: (A)5' (B)3' (C)6' (D)4' - CORRECT ANSWER4' (IMC 507.4.1) 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 BTU or rated capacity of the furnace? (A)3" (B)1" (C)4" (D)2" - CORRECT ANSWER-2" (Fuel Gas Code 9.3.3.2) The existing terminals of a mechanical draft system shall not be less than ___ feet above finished ground level where located adjacent to public walkways: (A)7' (B)2' (C)8' (D)5' - CORRECT ANSWER-7' (IMC 804.3.4 #1) What device is installed to prevent a back draft occurring in an appliance? (A)Power draft vent (B)Vent cap (C)Saftey relief valve (D)Draft hood - CORRECT ANSWER-Draft hood (Fuel Gas Code, 3.3.33) Minimum distance between the lowest edge of a grease filter and the cooking surface with exposed flame or burners is: (A)42" (B)6" (C)48" (D)24" - CORRECT ANSWER-24" (IMC Table 507.2.8) Non-metallic ducts shall have a flame spread index of ___ or less and a smokedevolped index of ___ or less: (A)100,200 (B)84,723 (C)50,100 (D)25,50 - CORRECT ANSWER-25,50 (IMC 602.2.1) A blower fan used for the purpose of distributing supply air to a room, space, or area is a: (A)Air-handling unit (B)Return fan (C)Make-up fan (D)Exhaust fan - CORRECT ANSWER-Air handling unit (IMC Chapter #2) Maximum flame spread distance of ___ feet for combustable electrical wires, cables, and optical fiber cables exposed within a plenum: (A)30' (B)3' (C)70' (D)5' - CORRECT ANSWER-5' (IMC 602.2.1.1) Where all combustion air is provided by a mechanical air supply system, the combustion air shall be supplied from outdoors at the minimum rate of: (A)100ft3/1000BTU/hr (B)0.35ft3/1000BTU/hr (C) 25ft3/1000BTU/hr (D)50ft/1000BTU/hr - CORRECT ANSWER-0.35ft3/1000BTU/hr (Fuel Gas Code, 9.3.6) A chimney for a residential type or low-heat appliances shall exceed at least ___ feet above the highest point where it passes through the roof of a building? (A)5' (B)2' (C)10' (D)3' - CORRECT ANSWER-3' (Fuel Gas Code, 12.6.2.1) A chimney for a low heat appliance must withstand a continuous flue gas temperature not exceeding ___: (A)1000 (B)1800 (C)800 (D)1200 - CORRECT ANSWER-1000 (IMC 202 Appliance Type) When running flue gas pipe, any angle greater than ___ from the vertical is considered to be horizontal: (A)30 (B)60 (C)45 (D)90 - CORRECT ANSWER-45 (Fuel Gas Code, 12.7.3.2) A direct vent appliance with an input over 50,000BTU/hr, shall have at least ___ inches from any air opening into a building: (A)12 (B)6 (C)18 (D)9 - CORRECT ANSWER-12 (Fuel code 12.9.3) Unless otherwise specified by the designer, that sealing requirements do not contain provisions to: withstanding temperatures higher than ___ degrees F, or lower than ___ degrees F: (A)120, 40 (B)175, -30 (C)40,120 (D)212, 32 - CORRECT ANSWER-120, 40 (SMACNA S1.9 e. 4. )