Oil Furnaces Exam Questions With Already Passed Answers!!

leak. - ANSWER-The answer is EXCESS ELEVATION CHANGE. Excessive elevation change is not a common oil supply line problem. A fuel filter is needed in this arrangement. All of the following are common vent connector issues on oil furnaces except A) poor connection to chimney. B) poor support. C) poor slope. D) loose fittings at plastic connections. - ANSWER-The answer is LOOSE FITTINGS AT PLASTIC CONNECTIONS. Loose fittings at plastic connections are not an issue on oil furnaces. Plastic connections would not be used on vent connectors for oil furnaces. The barometric damper for a conventional efficiency oil furnace is found on the A) heat exchanger. B) exhaust flue. C) burner. D) furnace cabinet. - ANSWER-The answer is EXHAUST FLUE. The barometric damper is on the exhaust flue. The maximum steady state efficiency for an oil burner is