Mechanical Engineering Unit 47 Unit Review Questions Answer Keygo Back Index Why Important Properly Plan The

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UNIT 47 REVIEW QUESTIONS ANSWER KEY GO BACK TO INDEX

47-1) Why it is important to properly plan the installation of a residential split

system air conditioner?

47-2) What should a technician reference before installing a system?

457-3) What is the industry standard for determining the heat gain of a

residential structure?

47-4) What happens if a system is oversized for its application?

47-5) What is the minimum SEER rating for new systems?

47-6) What is the name of the outdoor rated, water tight, flexible electrical

cable connecting the system’s disconnect to the condensing unit?

47-7) What gauge thermostat wire is typically used on residential systems?

47-8) Where should an outdoor condensing unit not be located?

47-9) Normally what is the maximum length a line set can be run on many

residential spilt system air conditioners?

47-10) How should a technician determine the diameter of the line set to use?

47-11) Why are sections of tubing that are to be fitted together sometimes

swaged?

47-12) What micron level should be achieved when evacuating a system?

47-13) What are the three main types of over current protection devices that

can be used on a condensing unit?

47-14) At what height should a thermostat be mounted above the floor?

47-15) What diameter condensate line is typically run from the drain pan of the

evaporator?

47-16) What is the purpose of the secondary drain line?

47-17) What is the required airflow across the evaporator of a residential split

system air conditioner?

47-18) What two methods can be used to measure the airflow across an

evaporator?

47-19) For a system using a non-TEV metering device such as a fixed orifice,

what method can be used to determine if the refrigerant charge is

adequate?

47-20) When the installation is complete what should a technician do before leaving

the job?