CSLB C20

Duct systems should be installed according to ____ Standards - SMACNA The type of flue pipe used on gas 80% standard furnace 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 ...