Boiler License Test Questions with Correct Answers

Natural draft is produced by? - Answer-difference in temperature outside chimney from inside chimney If a draft fan is located between the boiler and chimney, what type of draft system is it? - Answer-Induced draft boiler fittings are important for: - Answer-safety only thermostatic traps remove air and cool condensate: true or false - Answer-True The main purpose of testing a safety value is to: - Answer-make sure valve operates freely when testing a safety valve by hand, you must: - Answer-have at least 75% of popping pressure If a license is expired, how long can it be expired before it is null and void? - Answer-3 years What is the purpose of a check valve? - Answer-prevent reverse flow, allows flow in one direction What is a solenoid valve? - Answer-An automatic gas shutoff valve What # oil needs to be preheated with what piece of equipment? - Answer-#6 oil with a heater What type of test is a hardness test? - Answer-A titration test