HVAC - EPA Certification Questions and Answers Solved 2023

Clean Air act - 608 EPA - Environmental Protection Agency - ANSWER-to minimize the quantity of refrigerants released to the atmosphere, and to maximize the recovery and recycling of refrigerants during the servicing and disposal of mobile and stationary air conditioning and refrigeration equipment. ozone - ANSWER-a layer in the earth's stratosphere at an altitude of about 6.2 miles (10 km) containing a high concentration of ozone, which absorbs most of the ultraviolet radiation reaching the earth from the sun. chlorine - ANSWER-the chemical element of atomic number 17, a toxic, irritant, pale green gas. freon - ANSWER-a gas at room temperature and a liquid when cooled or compressed. Freon gas is colorless, non-flammable and relatively odorless. Some Freon gases have an ether-like odor. Four categories of certification - ANSWER-1. Type I - small appliances 2. Type II - high pressure appliances 3. Type III - low pressure appliances 4. Universal - both low & high pressure and small appliances refrigeration - ANSWER-movement of heat from an area where it is not wanted to an area where it is less objectionable vapor/compression refrigeration cycle - ANSWER-may be defined as lowering the temperature of an enclosed space by removing heat from that space and transferring it elsewhere. A device that performs this function may also be called an air conditioner, refrigerator, air source heat pump, geothermal heat pump or chiller (heat pump). gauge manifold set - ANSWER-allows the HVAC technician to check central air conditioning unit operating pressures, transfer Ac refrigerant, pressure test system, purge the system with nitrogen, and perform other necessary tasks. pressure/vacuum - ANSWER-pressure as defines as the force per unit area, most often described as pounds per square inch (U.S.) Two types: A - absolute G - gauge