HVAC CONTRACTOR EXAM|VERIFIED WITH GUARANTEED ACCURATE ANSWERS
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HVAC CONTRACTOR
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HVAC CONTRACTOR
HVAC CONTRACTOR EXAM
HVAC CONTRACTOR EXAM|VERIFIED WITH GUARANTEED ACCURATE ANSWERS
A 100,000 BTU/h, Category IV has furnace using 100% outside air provided by mechanical means requires how many cubic feet of combustion air? - Accurate Answer35.
Which of the following could be the resu...
HVAC CONTRACTOR EXAM
HVAC CONTRACTOR EXAM|VERIFIED WITH GUARANTEED ACCURATE ANSWERS A 100,000 BTU/h, Category IV has furnace using 100% outside air provided by mechanical means requires how many cubic feet of combustion air? - Accurate Answer ✅✅35.
Which of the following could be the results of an insufficient amount of combustion air? - Accurate Answer✅✅Burner flames with yellow tips.
Using the duct size calculator provided, what would be the approximate Air Quantity I. CFM given the following variables?
-14- inch by 14 inch rectangular duct
-1000 FPM velocity - Accurate Answer ✅✅1300
Combustion is a chemical process of rapid oxidation in which fuel and oxygen produce - Accurate Answer✅✅Heat and light.
Apply the "cfm" formula to solve the following: A duct measures 40 inches by 22 inches and the air velocity is 1,500 fpm - Accurate Answer ✅✅9,167 cfm.
An R-19 insulated wall needs approximately ___________ of mineral wool. - Accurate Answer ✅✅6 inches.
A technician is working on an exterior wall doing some notching. This wall is of nominal 2"x6" wood stud.
This means this wall must be notched every _________ - Accurate Answer ✅✅1-3/8 inches.
Incomplete combustion occurs when a flame does not receive enough oxygen to finish the combustion process. A result is incomplete combustion would be _________, which is colorless, odorless, and highly toxic. - Accurate Answer ✅✅Carbon monoxide.
Copper or brass pipe joints of iron pipe size shall be of approved threaded, flanged, or brazed types. The tubing joints and connections shall be approved flared, lapped, swaged, or brazed joints, but shall NOT be of _________ type. - Accurate Answer ✅✅Compression.
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