Btuh - Study guides, Class notes & Summaries

NATE Exam: Core Test Refresher Questions and Answers (Graded A) Calculate the air volume based upon these conditions: 90,000 BTUH output Return air temperature: 70F Supply air temperature: 110F a. 1,158 CFM b. 1,500 CFM c. 1,800 CFM d. 2,083 CFM - ANSWER-d (2,083 CFM)

G2 Exam Quiz Bank (2024/ 2025 Update) Questions and Verified Answers| 100% Correct| Grade A Q: The STACK EFFECT in a water heater is usually caused by Answer: Short draws of water from the heater Q: A 120v power supply for a residential electrical circuit is taken from the Answer: - Load side of one branch circuit breaker and a neutral lug Q: The minimum allowable distance to be maintained from a 50,000 btuh water heater flue outlet gas regulator Answer: 3' ...

Gas Technician G2 License Test Questions and Answers Verified 100% An inline Ammeter is connected Ans- In series with the device being checked As the length of an Electrical run increases, it may be necessary to Ans- Increase the Wire Size Fuses serving motor circuits should be of Ans- Time Delay Type Millivolt wiring should be isolated from Line Voltage Wiring because Ans- The Line Voltage will induce a voltage into the Millivolt Wiring Which tool is used to determine if t...

HVAC NATE Heat Pump Exam (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A Q: What is the absolute pressure at sea level if a gauge pressure is 35 psig? Answer: 49.7psia Q: 100,000 BTUH output furnace. Return air temp is 65F. Supply air is 135F. What is the CFM? Answer: 1323CFM Q: What is the best method of repair when a residential supply diffuser is noisy because of a loose vane? Answer: Replace the diffuser. Q: When...

Which of the following factors affects a customer's level of comfort? a. Air movement b. Humidity c. Temperature d. All of the above - Answer-d (All of the above: air movement, humidity, temperature) A cooling load calculation estimates the sensible heat gain of a structure. The maximum sensible capacity of a cooling-only system should be within ____% of this calculated value. a. ±10% b. +10% c. +15% d. +30% - Answer-c (+15%) The maximum sensible cooling capacity of a heat pump shou...

Gas Tech II Exam Questions and Answers 100% Pass 1) What is the minimum diameter of a pressure gauge needed to perform leak test on gas piping? 3" 2) Amp meter can read what? Conductor magnetic field. 3) What would be the primary voltage of a furnace? 120/1/60. 4) What is the function of an intermittent pilot? Stay on during the main burner operation. 5) What is the millivolts power output on a thermocouple closed circuit test? 10 to 15 millivolts. 6) A pilot with a lazy yellow flame woul...

Which of the following factors affects a customer's level of comfort? a. Air movement b. Humidity c. Temperature d. All of the above correct answers d (All of the above: air movement, humidity, temperature) A cooling load calculation estimates the sensible heat gain of a structure. The maximum sensible capacity of a cooling-only system should be within ____% of this calculated value. a. ±10% b. +10% c. +15% d. +30% correct answers c (+15%) The maximum sensible cooling capacit...

HVAC CONTRACTOR EXAM QUESTIONS AND ANSWERS 100% PASS An instrument that measures potential differences between 2 points in an electrical circuit is called? A. potentiometer B. thermistor C. ohmeter D. voltmeter - Correct Answer ️️ -voltmeter This device uses a thermal sensing bulb at the outlet of the evaporator to sense temperature and control superheat A. automatic expansion valve B. thermostatic expansion valve C. low side float D. schraeder valve - Correct Answer ️️ -the...

OK HVAC JOURNEYMAN TEST EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A+ C- leaky suction valve A deep vacuum is an evacuation method in which a technician uses a vacuum pump (or the systems compressor) to pull a vacuum until no moisture or other vapor remains in the system. If the compressor is used for this procedure, but CANNOT produce a deep vacuum, which of the following would be the problem? A- bad TXV B- low refrigerant C- leaky suction valve D- leaky exhaus...

Combo with NATE Heat Pump Exam and 1 other Questions And Answers Charging a heat pump with refrigerant is best accomplished in the _______ mode. A: Heating mode B: Cooling mode C: Defrost mode D: Emergency heating mode - ANS B: Cooling mode Heat pumps can provide both heating in the winter and cooling in the summer. In which mode is the heat pump more efficient? A: Heating mode B: Cooling mode C: Defrost mode D: Emergency heating mode - ANS A: Heati...