CSIA C-DET EOC MAIN EXAMS QUESTIONS AND
ANSWERS FIRM A+
✔✔When running through an unsealed area such as an attic - ✔✔When should the
dryer exhaust duct be insulated?
✔✔If the ductwork is suspended horizontally for a length of more than 3 feet - ✔✔When
should Plumber strapping be used to secure the ductwork?
✔✔Elbows should be reinforced with metal tape - ✔✔What should the elbows be
supported with to take a load off the joint?
✔✔28 gauge - ✔✔What is the gauge vent for a type one dryer?
✔✔What is the gauge for a type two dryer? - ✔✔24 gauge
✔✔1 inch - ✔✔How much reduction does a half-inch of length cause an even?
✔✔44% - ✔✔A 1 inch reduction will reduce the overall diameter by what percent?
✔✔1 - determining the size and location of blockages
2 - determine whether the exhaust duct is properly connected
3 - determining the condition of a duck
A - if there are wet spots,
potentially causing corrosion
B - confirmation that the duct is not
crush
4 - locating points for the duct may be punctured
5 - inspecting the integrity of elbows - ✔✔What should video evaluation be used for?
✔✔1 - when the Vane Anememeter & Magnegelic gauge indicates a blockage friction
after cleaning
2 - when irregularities are found during clean
3 - when the ducting is very long
4 - to confirm that duct is clean
5 - whenever the duck is hidden behind walls and duct integrity is questionable
6 - whatever blockage or large amount of lint makes the duct suspect
7 - when the termination of the duct cannot be located - ✔✔When to video inspect
✔✔1 - Place the camera near the dryer outlet
2 - inspect after Duck has been clean
3 - use length of rods to measure distance to problem areas
4 - start the camera, use the centering device, insert into duct, and adjust lighting for
optimal viewing
, 5 - push the camera slowly through the duct
6 - carefully pass through elbows, well evaluating the condition
7 - take notes during the process and record your findings - ✔✔Procedures for using
video equipment
✔✔Four to one - ✔✔According to OSHA, what is the angle of your ladder?
✔✔Soft cream or gum-soled shoes - ✔✔What type of shoes should you wear when
walking on roofs?
✔✔True - ✔✔True or false
It is a good idea to include a ground fault circuit interrupter or GFCI, when using an
extension
✔✔Up to $500, jail, up to six months, or both - ✔✔What is the fine for violating the
migratory bird treaty act.
✔✔A blockage in the venting system will slow or stop the air from flowing out of the
system, and can result in the dryer overheating - ✔✔A blockage in the venting system
can do what?
✔✔A built-in high limit thermostat that detects unusual high temperatures - ✔✔What
does Bilton to the dryer to detect unusual high temperatures?
✔✔The built in Highland thermostat will automatically shut down the heating element or
gas burner. Once it is cold down, the heating element or gas burner will cut on only to
be shut off again and a short time. - ✔✔If the built-in, Heileman thermostats, detects,
unusual, high temperatures, what does it do?
✔✔Use the Vane Anemometer to see if you have the proper reading of 8 m/s or 15
m/min. - ✔✔What is step one and diagnosing dryer exhaust performance problems?
✔✔After eliminating the clothes dryer as the problem, check the back pressure in the
transition duck with Magnehelic gage. You should have a reading of less than .6 inches
of water column a higher reading indicates blockage in the duct system. - ✔✔What is
step two in diagnosing dryer vent performance problems?
✔✔Measure the airflow at the termination of the exhaust duct. You should get a reading
of 8 m/s or 1500 m/min. or greater with the Magnehelic gauge - ✔✔What is step three in
diagnosing dryer exhaust performance problem
✔✔Using internal evaluation equipment, such as video - ✔✔What is step four in
diagnosing dryer exhaust performance problems
ANSWERS FIRM A+
✔✔When running through an unsealed area such as an attic - ✔✔When should the
dryer exhaust duct be insulated?
✔✔If the ductwork is suspended horizontally for a length of more than 3 feet - ✔✔When
should Plumber strapping be used to secure the ductwork?
✔✔Elbows should be reinforced with metal tape - ✔✔What should the elbows be
supported with to take a load off the joint?
✔✔28 gauge - ✔✔What is the gauge vent for a type one dryer?
✔✔What is the gauge for a type two dryer? - ✔✔24 gauge
✔✔1 inch - ✔✔How much reduction does a half-inch of length cause an even?
✔✔44% - ✔✔A 1 inch reduction will reduce the overall diameter by what percent?
✔✔1 - determining the size and location of blockages
2 - determine whether the exhaust duct is properly connected
3 - determining the condition of a duck
A - if there are wet spots,
potentially causing corrosion
B - confirmation that the duct is not
crush
4 - locating points for the duct may be punctured
5 - inspecting the integrity of elbows - ✔✔What should video evaluation be used for?
✔✔1 - when the Vane Anememeter & Magnegelic gauge indicates a blockage friction
after cleaning
2 - when irregularities are found during clean
3 - when the ducting is very long
4 - to confirm that duct is clean
5 - whenever the duck is hidden behind walls and duct integrity is questionable
6 - whatever blockage or large amount of lint makes the duct suspect
7 - when the termination of the duct cannot be located - ✔✔When to video inspect
✔✔1 - Place the camera near the dryer outlet
2 - inspect after Duck has been clean
3 - use length of rods to measure distance to problem areas
4 - start the camera, use the centering device, insert into duct, and adjust lighting for
optimal viewing
, 5 - push the camera slowly through the duct
6 - carefully pass through elbows, well evaluating the condition
7 - take notes during the process and record your findings - ✔✔Procedures for using
video equipment
✔✔Four to one - ✔✔According to OSHA, what is the angle of your ladder?
✔✔Soft cream or gum-soled shoes - ✔✔What type of shoes should you wear when
walking on roofs?
✔✔True - ✔✔True or false
It is a good idea to include a ground fault circuit interrupter or GFCI, when using an
extension
✔✔Up to $500, jail, up to six months, or both - ✔✔What is the fine for violating the
migratory bird treaty act.
✔✔A blockage in the venting system will slow or stop the air from flowing out of the
system, and can result in the dryer overheating - ✔✔A blockage in the venting system
can do what?
✔✔A built-in high limit thermostat that detects unusual high temperatures - ✔✔What
does Bilton to the dryer to detect unusual high temperatures?
✔✔The built in Highland thermostat will automatically shut down the heating element or
gas burner. Once it is cold down, the heating element or gas burner will cut on only to
be shut off again and a short time. - ✔✔If the built-in, Heileman thermostats, detects,
unusual, high temperatures, what does it do?
✔✔Use the Vane Anemometer to see if you have the proper reading of 8 m/s or 15
m/min. - ✔✔What is step one and diagnosing dryer exhaust performance problems?
✔✔After eliminating the clothes dryer as the problem, check the back pressure in the
transition duck with Magnehelic gage. You should have a reading of less than .6 inches
of water column a higher reading indicates blockage in the duct system. - ✔✔What is
step two in diagnosing dryer vent performance problems?
✔✔Measure the airflow at the termination of the exhaust duct. You should get a reading
of 8 m/s or 1500 m/min. or greater with the Magnehelic gauge - ✔✔What is step three in
diagnosing dryer exhaust performance problem
✔✔Using internal evaluation equipment, such as video - ✔✔What is step four in
diagnosing dryer exhaust performance problems
