Furnace efficiency is - Study guides, Class notes & Summaries

Green Awareness Final Test Review Questions with Complete Solutions A "Heat Load Calculation" Uses the R values of building materials,Is used to properly size heating and cooling systems,Uses indoor and outdoor design temperatures for geographic location, All of the above A Bourdon tube is often found in a pressure gauge A condensing boiler condenses moisture from the flue gases A faucet water flow restriction device which adds air to the volume of water is the aerator A fauc...

Furnace efficiency is Correct Answer the difference between the heat input and the actual heat output, expressed as a percentage Furnace efficiency is calculated by Correct Answer useful output divided by input Combustion efficiency is Correct Answer an index of the useful heat obtained from the gas being burned AFUE (Annual Fuel Utilization Efficiency) is Correct Answer a percentage of the annual average efficiency of a furnace as determined by laboratory tests All furnaces manufact...

Home Inspector Test Questions and Answers Already Passed What does a thermal imaging camera help identify during an inspection? A thermal imaging camera helps identify temperature variations that may indicate moisture intrusion, insulation gaps, or electrical problems. What are the potential risks of neglecting a home’s exterior? Neglecting a home's exterior can lead to water damage, pest infestations, and structural deterioration due to inadequate maintenance. Why is checki...

1 millivolt is equal to - 1/1000 of a volt A clothes dryer utilizing gas or propane is considered to be apart of what system - Mechanical A cylinder relief valve must discharge at - 375 PSIG A depressurization test will determine - Potential for pressure induced backdrafting in the house A diode - Allows current to only flow in one direction A draft hood will prevent what? - A down draft from entering an appliance A Fan Control is a: - Normally Open Temperature Control that Closes on Tempe...

HVAC Gas Heat Exam (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A Q: Why is specific gravity of a gas important? Answer: It affects the gas flow through the piping and through the orifice of the furnace. Q: What is an orifice and a spud? Answer: An orifice is a precisely sized hole in a gas fitting which gas flows from the manifold to the burners. A spud is another name for a gas fitting. Q: If both a light gas and a heavy gas are at...

Journeyman Oil Maine Fuel Board RulesJourneyman Oil Maine Fuel Board RulesJourneyman Oil Maine Fuel Board RulesJourneyman Oil Maine Fuel Board RulesJourneyman Oil Maine Fuel Board RulesWhat must you do if you notice code violations in a homeowners house? - ANSWER-Notify them and recommend ways to address them What must be done when performing an annual tune-up on a heating system? - ANSWER-A combustion efficiency test and a copy must be posted on site Whenever a furnace, direct fired hot w...

Journeyman Oil Maine Fuel Board Rules-Latest Update 2025!Journeyman Oil Maine Fuel Board Rules-Latest Update 2025!Journeyman Oil Maine Fuel Board Rules-Latest Update 2025!Journeyman Oil Maine Fuel Board Rules-Latest Update 2025! What must you do if you notice code violations in a homeowners house? - ANSWER-Notify them and recommend ways to address them What must be done when performing an annual tune-up on a heating system? - ANSWER-A combustion efficiency test and a copy must be posted on s...

______ draft is produced by a fan located between the boiler and the chimney - Answer induced _______ gauge glasses are used on boilers with precious exceeding 250 psi - Answer flat _______ is caused by allowing sudden extreme changes of temperature in a furnace - Answer spalling ________ boilers can operate at higher pressures than fire tube boilers - Answer water tube _________ are necessary for complete combustion - Answer time, temperature, mixture, and atomization _________ is alw...

G2 Gas Technician Module 19 Revised Questions Rated A If the venting on a high efficiency furnace runs through unheated spaces, what must be done? Insulate piping to prevent Condensation and freezing What is condensate drain piping used for? Dispose Liquid waste Once the furnace is installed, what are the gas technician's responsibilities to the user? To instruct the the user in the safe and correct operation of all appliances and equipment - clause 4.3.2 Which furnace type is the most popu...

b (heat exchanger) - Answer In a modern gas furnace, the component that separates the combustion gases from the supply air is the ______. a. gas valve b. heat exchanger c. inducer fan d. plenum box a (Gravity) - Answer What type of furnace moves warm air through the conditioned space without a fan? a. Gravity b. Horizontal c. Lowboy d. Upflow d (steel) - Answer Furnace heat exchangers generally are made of ______. a. ceramic b. copper c. plastic d. steel b (Annual Fuel...