TSSA unit 13 Exam Questions with Correct Answers

TSSA unit 13 Exam Questions with Correct Answers what best describes a 'Non-spillage Susceptible appliance - Answer-an appliance that has a venting system that will not reverse (backdraft) and spill flue gases in the building due to a negative air pressure of -0.2 in. w.c (5 pa) or less floor slabs, foundation, walls, roof, windows and doors are part of which component in the building system - Answer-the building envelope what is the main purpose of the building skin - Answer--to protect the underlying layers of the building envelope from damage caused by small animals and insects nesting in the insulation -to protect the underlying layers of the building envelope from the driving forces of wind, and rain if a building is pressurized, what happens to the excess air - Answer-it is forced out through any openings in the building envelope what is the problem with the supply-only systems in leaky structures - Answer-they drive moist air into wall cavities what is the best explanation of a passive depressurization test - Answer-it uses the only exhaust equipment in the building (similar to the basic venting test) what is the maximum negative building pressure that a natural draft vented appliance should be exposed to - Answer--0.02 in. w.c (5Pa)