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CSLB C20 Trade Tougher Questions & Answers. 100% verified. Graded A

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CSLB C20 Trade Tougher Questions & Answers. 100% verified. Graded A Duct systems should be installed according to ____ Standards - ✔✔-SMACNA The type of flue pipe used on gas 80% standard furn... ace venting systems serving gas fired systems - ✔✔- Type B-Vent Which type of gauge would you use for very high vacuums? - ✔✔-McLeod type gauge How many BTUs are equal to one kilowatt hour - ✔✔-3,414 BTU When adjusting gas fired furnaces above 2000 feet, the BTU per hour input should be reduced 4% for each _____ feet above sea level. - ✔✔-4% for every 1,000 feet How are residential furnace blower motors classified - ✔✔-by starting method What is the equation for determining heat loss through a material - ✔✔-Q = U times A times TD What is the overfire rating on a small draft hood - ✔✔-0.02 inches what is the equation for determining minimum size air supply for a blower type furnace - ✔✔-2 divided by 1000 times the BTU of the furnace what is the equation for determining minimum size air supply for a gravity type furnace - ✔✔-7 divided by 1000 times the BTU of the gravity furnace the type of bub that measures evaporative cooling - ✔✔-wet bulb the heating value of natural gas is - ✔✔-1100 BTU per cubic foot Silver solder starts to flow at or above - ✔✔-1150 degrees fahrenheit how high must a 12"diameter flue pipe project above a pitched roof line - ✔✔-2 feet Ducts conveying flammable dusts must have a clearance from combustible materials of not less than how many inches - ✔✔-18 inche [Show More]

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