Hvacr - Study guides, Class notes & Summaries

A grain is a small measurement of weight that is used to measure water vapor in the air. How many grains are equal to one pound? - 7,000 Area measurements are used to measure: - The size of a floor in a room. For which of the following measurements is area used? - Surfaces How many grains are in a pound? - 7,000 How many ounces equal one pound? - 16 If you have a system with a 4 gallon per minute (gpm) flow rate, how many gallons will be delivered in one hour? - 240 gallons If you need t...

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HVACR gas heating ESCO Questions and Answers 100% Solved using an ohmmeter, there is 120 VAC between high speed and ground wires, this indicates ️️open if temperature rise is too high... ️️increase fan speed how many of the 3 OSHA conditions defining confined spaces must be met ️️all 3 what causes the temperature limit safety switch to shut off the burner ️️fan motor failure flashback indicates ️️the gas is flowing slower than the speed at which burn is occurring wh...

HVACR EXAM 1 QUIZZES & ANS!!

HVACR Journeyman Practice Exam with Answers A+ Graded In a (direct expansion) evaporator, liquid refrigerant must boil away as close to the end of the coil as possible in order to: - CORRECT ANSWER-Operate at High Efficiency. What is one of the main reasons that reciprocating compressors are not 100% efficient? - CORRECT ANSWER-Clearance Volume A dirty evaporator and return air filters subsequently causes low evaporator pressures which will cause - CORRECT ANSWER-High Compression Rati...

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