Combustion air for gas appliances should be A) Recycled by ...

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Combustion air for gas appliances should be
 
  A) Recycled by piping the vent gasses back into the combustion air intake
  B) 10 cubic feet of combustion air per 1000 BTU of firing rate
  C) 14 to 15 cubic feet of combustion air per 1000 BTU of firing rate
  D) 1 cubic foot of combustion air for every cubic foot of gas

Question 2

What type of drive would move the driven device at the same speed as the motor?
 
  A) Belt drive B) Direct drive C) Overdrive D) Gear drive

[ms_sulzle]

Answer to Question 1

C

Answer to Question 2

B

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TY

[ms_sulzle]

You're welcome