Line E Draft Systems

Question 1

Referring to the figure below, what type of actuator is used to drive the vent damper?

Answer 1

Linear

Question 2

Referring to the figure below, what type of actuator is used to drive the vent damper?

Answer 2

Rotary

Question 3

When an automatic flue damper used on an appliance equipped with direct-spark ignition falls fully open upon loss of driving medium, the fuel supply to the appliance needs to be shut off.

Answer 3

False

Question 4

What type of tubing is used to connect a differential pressure transducer used to control a damper actuator to the flue stack probe?

Answer 4

Silicon

Question 5

What is the typical maximum distance a differential pressure transducer used to control a damper actuator should be connected to the flue stack probe?

Answer 5

6 feet

Question 6

Referring to the figure below, What should distance ‘A’ be to improve accuracy?

Answer 6

3 times the vent diameter

Question 7

If a CO sensor is used in a boiler room, how high above the floor should the sensor be mounted?

Answer 7

4 to 6 feet

Question 8

When CO sensors are installed in an 28,250 ft2 boiler room, a total of how many sensors are required?

Answer 8

4 (7500sqft per)