An open door switch on a gas furnace will cause: A) A complete ...

[B]

An open door switch on a gas furnace will cause:
 
  A) A complete system shutdownno system operation at all.
  B) The combustion process to shut down, but will not affect the indoor blower.
  C) The door open alarm to sound, but will not affect system operation.
  D) The indoor blower to shut down, but will not affect the combustion process.

Question 2

Static pressure readings are taken on a duct system by:
 
  A) Pointing the pressure-sensing tube perpendicular to the air stream.
  B) Subtracting the velocity pressure from the total pressure.
  C) Subtracting the total pressure from the velocity pressure.
  D) Pointing the pressure-sensing tube into the airstream.

[makaylafy]

Answer to Question 1

A

Answer to Question 2

A

[B]

Wow, this really help

[Bigfoot1984]

Excellent