Wiring
What is the color of your ground wire
Green
What is a high-limit switch?
This safety switch shuts down a furnace if it overheats.
What is the evaporator coil?
Absorbs heat from the air
What is soft copper?
Its flexible and easy to bend
What are straight snips
sheet metal tool is commonly used to cut straight lines in ductwork material.
what color is the line power to a unit
Black
What is natural gas?
A fuel that is used most commonly in residential areas.
What is condensation?
refrigeration process rejects heat from the system into the outdoor air or water.
What is a tubing cutter?
Used to cut copper pipe
What is a brake
machine bends sheet metal into precise angles for duct construction
technicians often use this tool to check continuity and voltage.
Multi meter
What is AFUE
Annual Fuel Efficiency
What is a TXV
The metering device controls the amount of refrigerant entering the evaporator based on load conditions.
What is moisture
contaminant inside copper refrigeration lines can damage compressors and metering devices.
What is gauge
Sheet metal thickness is commonly measured using this system.
What is a circuit breaker
It protects the wiring from excessive current draw
What is emergency heat?
The thermostat setting temporarily energizes auxiliary electric heat on a heat pump system.
What is the condenser?
changes refrigerant vapor into a liquid.
What is a coupling
copper fitting that allows two sections of tubing to be joined together in a straight line.
What is an elbow
This round duct fitting changes direction in an airflow system.
What is a wiring splice
Wiring connection is made by twisting conductors together and covering them with a wire connector.
What is the heat exchanger?
The part of a gas furnace transfers heat from combustion gases to the air moving through the home.
What is the expansion device?
Refrigerant changes from a high-pressure liquid to a low-pressure
What is the brazing temperature range
1100-1500F
Galvanized is a much thicker piece of metal and is a lot stronger