Author Question: The first step in selecting commercial refrigeration equipment for a new installation is: A) ... (Read 71 times)

justinmsk · **on:** Jul 24, 2018

The first step in selecting commercial refrigeration equipment for a new installation is:

A) Compile a list of components already in inventory so that you can see what you will have to choose from.
B) Perform a heat load calculation to determine the required BTU capacity of the system.
C) Compile a list of component prices in order to determine how large a system you can afford.
D) Select the compressor because all other components will be sized to match it.

Question 2

Why are standard low-efficiency furnaces no longer manufactured?

A) The thermocouple flame safety devices they use have not been thoroughly field tested.
B) They cannot provide the minimum 80 percent AFUE required by DOT.
C) The standing pilot flame safety devices were deemed too hazardous after several technicians were electrocuted while changing a thermocouple.
D) Thermocouples proved to be an unreliable technology.