NHIE and AHIT Exam Questions + Flashcards and Answers with complete solutions | Graded A+

NHIE and AHIT Exam Questions + Flashcards and Answers with complete solutions | Graded A+ This type of water heater ventilation system uses the natural upward movement of airflow to filter exhaust gases up and out of the home. - atmospheric ventilation system The shutoff valve for a gas water heater's supply line may not be more than _____ feet from the water heater. - 6 Water heaters must be installed in a location that has a level working space that is at least _____ inches long and _____ inches wide. - 30, 30 Water heaters that use a gas fuel source may not be located in a room with _____ machinery. - air-handling Chimney Cap - mounted above the crown, preventing water, birds, small animals, and debris from getting inside the chimney while allowing smoke and gas to escape. Chimney Crown - the top level of the chimney, with a sloped surface directing much of the water away from the chimney Spark arrestor - mesh covering that stops sparks and embers from leaving the chimney. Irrigation systems conserve water by the use ___ ____ or ___ ___ sensors (SMS). - rain sensors, soil moisture What 2 components are in a zone for a sprinkler system? - valve, sprinkler head