559 Journeyman Mechanical Exam HVAC Complete Questions and Answers

Which Type of air-conditoning system is most likely to leak refrigerant into a structure? Direct, Indirect, Evaporative or Split? - CORRECT ANSWER-Direct : 2015 IMC 1103.3.2 When mechanical equipment is located on a flat roof that is more than 30 inches above grade, how far from the roofs edge must the equipment be located before a guard rail is not needed? less than 6', 9', 4' or more than 10'? - CORRECT ANSWER-More than 10' - 2015 IMC 304.11 A mall bathroom exhaust outlet shall terminate a minimum height of ____ feet above an adjoining sidewalk? - CORRECT ANSWER-10 feet above adjoining grade - 2015 IMC 501.3.1 A room that measures 10x20x8 contains a 35,000 BTU wood burning stove in a building classified as unusually tight construction, what size combustions air openings will be required if they are installed directly in a side wall? - CORRECT ANSWER-8.7 square inches (1 square inch per 4,000 BTU) - 2015 IFGC 304.6.1 How many BTUs in one ton of refrigeration? - CORRECT ANSWER-12,000 BTUS - 2015 IMC Definitions p. 17 'Refrigeration Capacity Rating.' Which refrigerant is not classified as a flammable refrigerant? - CORRECT ANSWERClass 1 - 2015 IMC Definitions p. 13 'Flammability Classifications' Grounded circuit conductor shall be identified by a covering or marking by which of the following colors: A) White or Gray B) Green, C) Black or D) Red? - CORRECT ANSWER-White or Gray - 2014 NEC 200.6 What is the minimum distance to a property line that a supply air intake can be located