Heat pump work - Study guides, Class notes & Summaries

Local 94 School - 475 terms to know for the RMO written exam with Answers How do automatic expansion valves work? - ANS Evaporator pressure closes the valve and spring pressure opens the valve. When will a faulty check valve cause the most damage? - ANS On startup. What will happen if a TEV'S sensing bulb insulation wears off of the suction line in an 85 F Degree room? - ANS You will flood the evaporator. What can a clogged pump strainer cause? - ANS A reduction or loss in ...

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...

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 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 2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel! 1 | P a g e | G r a d e A + | 2 0 24 / 2 0 2 5 C: Defrost mode D: Emergency he...

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 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 2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel! 1 | P a g e | G r a d e A + | 2 0 24 / 2 0 2 5 B: Cooling mode C: Defrost mode D: Emergency h...

NATE Air Conditioning and Heat Pump Exam Questions and Answers Updated (GRADED A+) The maximum sensible cooling capacity of a heat pump should be within ______% of the calculated sensible heat gain of a structure with a large heating load. - ANSWER- +25% The combined output of a heatpump and its auxiliary heat should not exceed the calculated heat loss of a home by more than ____%. - ANSWER-15% What amount of auxiliary electronic heat is needed when the output of a heat pump on a design d...

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...

a ________ is used to measure the amount of CO2 in the flue product - CO2/O2 indicator a 14-gauge soild copper wire would require____amp circuit protection - 15 amps a 50/50 solder is a combination of lead and - tin a bourdon tube is often found in a - pressure gauge a day-ton of refartion is the amount of the refrigeration produced by melting 1 ton of ice at temperature of 32 degrees F in 24 hours? - true a fusible plug is made from - a metal alloy that will burn when overheated a gas la...

An instrument that measures potential differences between 2 points in an electrical circuit is called? A. potentiometer B. thermistor C. ohmeter D. voltmeter - 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 - Answer-thermostatic expansion valve when installing a reversing valve on a heat pump, how many br...

NATE Air Conditioning and Heat Pump Exam Questions and Answers Updated (GRADED A+) The maximum sensible cooling capacity of a heat pump should be within ______% of the calculated sensible heat gain of a structure with a large heating load. - ANSWER- +25% The combined output of a heatpump and its auxiliary heat should not exceed the calculated heat loss of a home by more than ____%. - ANSWER-15% What amount of auxiliary electronic heat is needed when the output of a heat pump on a design d...

An instrument that measures potential differences between 2 points in an electrical circuit is called? A. potentiometer B. thermistor C. ohmeter D. voltmeter : 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 : thermostatic expansion valve 2 | P a g e when installing a reversing valve on a heat pump, how man...