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HVAC Journeyman License Study Guide
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HVAC Journeyman License Study Guide
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HVAC Journeyman License Study GuideAppliance Type Correct Ans-High heat appliance
- Any appliance in which the products of combustion at the point of entrance to the flue under
normal operating conditions have a temperature greater than 2000 F
Low heat appliance (residential appliance)
- Any appliance in which the products of combustion at the point of entrance to the flue under
normal operating conditions have a temperature of 1000 F or less
Medium heat appliance
- Any appliance in which the products of combustion at the point of entrance to the flue under
normal operating conditions have a temperature more than 1000 F, but not greater than 2000 F
Brazing Correct Ans-A metal joining process wherein coalescence is produced by the use of a
nonferrous filler metal having a melting point above 1000 F but lower than that of the base
metal being joined. The filler material is distributed between the closely fitted surfaces of the
joint by capillary attraction.
BTU Correct Ans-The abbreviation for British thermal unit, a unit of heat energy, which is
defined as the amount of heat required to raise the temperature of one pound of water by one
degree Fahrenheit.
Combustable Liquid Correct Ans-A liquid having a closed cup flash point at or above 100°F.
Class II
- Liquids having a close cup flash point at or above 100F and below 140F
Class IIIA
- Liquids having a close cup flash point at or above 140F and below 200F
Class IIIB
- Liquids having a close cup flash point at or above 200F
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