Title: Unit 6 Quiz
Course: HAC 241 -Building Systems and Performance Spring 2015 > Section: HAC 241 -Building Systems and Performance Spring 2015

Q: Name the four steps of the combustion safety test

Q: How do you determine if there is spillage coming from the draft diverter
- a. check to see if there is a negatice draft pressure
- b. Check to see if there is a positive draft pressure
- c. Look for visible signs of gasses venting
- d. Use a smoke generator or mirror to detect vent gasses at the draft diverter
A: d. Use a smoke generator or mirror to detect vent gasses at the draft diverter

Q: When setting up the doors for determining the worst case condition and standing in the central hallway what should the door position be on a bedroom when smoke blows out from the door into the hallway(Room is Positive pressure)
- a. open
- b. closed
- c. either opened or closed
- d. none of the above
A: b. closed

Q: When setting up the doors for determining the worst case condition and standing in the central hallway what should the door position be on a bedroom when smoke enters into the bedroom from the hallway(room negative pressure)
- a. open
- b. closed
- c.either opened or closed
- d. none of the above
A: a. open

Q: When setting up the doors for determining the worst case condition and standing in the central hallway what should the door position be on a bedroom when the smoke does not go in or out?
- a. open
- b. closed
- c. either opened or closed
- d. none of the above
A: c. either opened or closed

Q: When setting up the doors for determining the worst case condition and standing in the CAZ what should the door position be on a CAZ door when smoke blows from the main part of the house into the CAZ.(house is positive)
- a. open
- b. closed
- c. either opened or closed
- d. none of the above
A: b. closed

Q: When setting up the doors for determining the worst case condition and standing in the CAZ  what should the door position be on a CAZ door when smoke blows into the house from the CAZ(house is negative)
- a.closed
- b. open
- c. either opened or closed
A: b. open

Q: What level of CO in ambient air should be of concern to the assessor?
- a. >9ppm
- b. >35ppm
- c. >50ppm
- d. >100ppm
A: a. >9ppm

Q: How many minutes are permitted to pass before the spillage test fails
- a. 1 minute
- b. 3 minutes
- c. 5 minutes
A: b. 3 minutes

Q: What level of CO in flue gasses will cause a test failure?
- a. 9ppm
- b. 50ppm
- c. 100ppm
A: c. 100ppm

Q: When testing for flue gasses in a category I draft hood equipped appliance the test point should be:
- a. At the end of the heat exchanger before the gasses enter the draft diverter
- b. about 1 foot away from the drafthood on a piece of straight pipe away from turns and transitions
- c. About 1 foot away from the inducer motor in a straight pipe away from turns and transitions
- d. Test the gasses as they exit from the structure
A: b. about 1 foot away from the drafthood on a piece of straight pipe away from turns and transitions

Q: When testing for draft in a category I draft hood equipped appliance the test point should be:
- a. At the end of the heat exchanger before the gasses enter the draft diverter
- b. about 1 foot away from the drafthood on a piece of straight pipe away from turns and transitions
- c. About 1 foot away from the inducer motor in a straight pipe away from turns and transitions
- d. Test the gasses as they exit from the structure
A: b. about 1 foot away from the drafthood on a piece of straight pipe away from turns and transitions

Q: When testing for flue gasses in a category I fan assisted appliance the test point should be:
- a. At the end of the heat exchanger before the gasses enter the draft diverter
- b. about 1 foot away from the drafthood on a piece of straight pipe away from turns and transitions
- c. About 1 foot away from the inducer motor in a straight pipe away from turns and transitions
- d. Test the gasses as they exit from the structure
A: c. About 1 foot away from the inducer motor in a straight pipe away from turns and transitions

Q: When testing for flue gasses in a category IV condensing appliance the test point should be:
- a. At the end of the heat exchanger before the gasses enter the draft diverter
- b. about 1 foot away from the drafthood on a piece of straight pipe away from turns and transitions
- c. About 1 foot away from the inducer motor in a straight pipe away from turns and transitions
- d. Test the gasses as they exit from the structure
A: d. Test the gasses as they exit from the structure

Q: When testing for draft in a category I fan assisted appliance the test point should be:
- a. At the end of the heat exchanger before the gasses enter the draft diverter
- b. about 1 foot away from the drafthood on a piece of straight pipe away from turns and transitions
- c. About 1 foot away from the inducer motor in a straight pipe away from turns and transitions
- d. Test the gasses as they exit from the structure
A: c. About 1 foot away from the inducer motor in a straight pipe away from turns and transitions

Q: When must an HVAC contractor perform a combustion safety test?
- a. Only when doing a water heater changeout
- b. only when doing a furnace changeout
- c. anytime work is done on any HVAC applicances
- d. Mondays, Wednesday, and Fridays
A: c. anytime work is done on any HVAC applicances

Q: Which materials are approved for use in sealing duct systems
- a. duct tape
- b. butyl tape
- c. approved foil tape
- d. duct mastic
- e. B,C, D
A: e. B,C, D

Q: Duct systems outside the thermal boundary should:
- a. Air Sealed
- b. Insulated
- c. Sized properly
- d. All of the above
A: d. All of the above