UNIT 83 REVIEW QUESTIONS ANSWER KEY GO BACK TO INDEX
83-1) When would a steam boiler be preferable over a hot-water-type boiler?
83-2) What water temperatures do most hot water boilers heat up to?
83-3) What water temperature do radiant floor heating systems typically operate?
83-4) What is the typical return water temperature for a gas fired boiler?
83-5) What is the working pressure for a low pressure boiler?
83-6) What is the heating input for a low pressure residential boiler?
83-7) What is the working pressure for medium and high pressure boilers?
83-8) What materials are boilers commonly made from?
83-9) What are some of the accessories required for a hot water boiler?
83-10) What can be done to treat steel piping to help keep it from rusting?
83-11) Where should air vents be located in a hot water heating system?
83-12) Why is it recommended to never put an air vent on a closed type expansion
tank?
83-13) What is a diaphragm type of expansion tank?
83-14) What could be the cause of a weeping relief valve on a hot water boiler?
83-15) What can happen if a boiler runs out of water?
83-16) What pressure is the relief valve typically set at on a residential or small
commercial system?
83-17) Can a hot water boiler pressure relief vale be tested?
83-18) What is the function of an aquastat?
83-19) What is a low water cut out?
83-20) Where do high-pressure steam safety valves vent to?