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HVAC TPC Study Guide Correct answers 2024/2025
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HVAC TPC Study Guide Correct answers 2024/2025
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Solution 2024/2025Pepper
HVAC TPC Study Guide
Cooling tower water should be regularly tested for... ANS✔✔ Legionella Bacteria
Air Handling Pg. 99 Sec. 6.36
To ensure comfort, a good A/C system must provide proper... ANS✔✔ Relative Humidity
Air Handling Pg. 6 Sec. 1.08
What is the most common cause of A/C system problems ANS✔✔ Dirty Air Filter
Air Handling Pg. 64 Sec. 4.23
What is the highest grade of filter ANS✔✔ HEPA Filter
(High Efficiency Particulate Air)
Air Handling Pg. 43 Sec. 4.21
Keeping the # of duct fitting/ connections to a min help reduce what ANS✔✔ Airflow Resistance
Air Handling Pg. 43 Sec. 3.13
What is the first thing you do before inspecting/repairing A/C fans? ANS✔✔ Always Lock out/tag out before working on
fan(s)
Air Handling Pg. 31 Sec. 2.41
Process of adding outdoor air in a space with recirculated air is called... ANS✔✔ Ventilation
Air Handling Pg. 13 Sec. 1.39
Air is set in motion due to a slight diffrenece in what? ANS✔✔ Pressure
Air Handling Pg. 9 Sec. 1.17
, Solution 2024/2025
Pepper
Where is the best place to find info for compressor replacement? ANS✔✔ Nameplate
Compressors Pg. 16 Sec. 1.49
What is the difference between a Reciprocating and a Rotary Compressor ANS✔✔ Rotary- Uses a rotors
Reciprocating- Uses pistons
Compressors Pg. 39 Sec. 3.01
What causes a seized compressor? ANS✔✔ -Lack of lubrication
-Low supply of oil
-Restricted oil return to crankcase
Compressors Pg. 103 Sec. 7.22
What is a sight glass used for in an A/C system? ANS✔✔ System with sight glass bubbles within it shows system
operating properly.
Where can hermetic compressors have service valves connected? ANS✔✔ The suction/discharge line.
Compressors Pg. 25 Sec. 2.09
What is used to connect connecting rod to piston ANS✔✔ The piston pin (wrist pin)
Compressor Pg. 25 Sec. 2.14
What is the purpose of the cylinder unloader? ANS✔✔ Draws refrigerant vapor into cylinder on down stroke, but pumps
vapor back into suction chamber of compressor without compressing.( Controls Capacity)
Compressors Pg. 30 Sec. 2.34
What type of gas are scroll and rotary compressors to cool down? ANS✔✔ Rotary- cooled by discharge gas.
Scroll- cooled by suction gas.
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