A trap in the condensate line prevents D. All of the above.
It should be noted that the idea of the condensate drain trap is to use the weight of the water to stop the flow of air.
Based on the information given, all the options are correct. Therefore, the correct option is D.
a. air and foreign material from being drawn up into the drain line
b. additional cooling load from warm air drawn up into the air handler
c. insect invasion of the system
d. all of the above
Learn more about cooling on:
brainly.com/question/13748261
#SPJ12
