Why did the development of 80 percent efficient furnaces using ...

[khang]

Why did the development of 80 percent efficient furnaces using draft-inducer fans present a problem for venting tables?
 
  A) The inducer fan cooled the air, and a smaller vent was required to prevent condensation.
  B) The use of natural-draft and draft-induced furnaces had little impact on venting tables.
  C) The draft-inducer fans required the use of a larger vent.
  D) The fan heated the air too much for standard venting.

Question 2

The most likely result of field design modifications to equipment is:
 
  A) Improved performance and efficiency. B) Reduced performance.
  C) Lower operating cost. D) Increased equipment life.

[stallen]

Answer to Question 1

A

Answer to Question 2

B

[khang]

Thanks

[stallen]

Welcome