HEATING
What is the first step of the order of operation?(HEAT)
Thermostat sending a call for heat
What does BTU stand for?
British Thermal Unit
What are the 4 most common types of copper?
M, L, K, DWV
What does PPE stand for?
Personal Protective Equipment
What does 9/36 simplify to?
1/4
What is sensible heat?
Heat energy that results in the change of temperature of a substance. (Sensor)
What does refrigerant turn into when it comes out the compressor?
High pressure Vapor
How much solder is used in a pipe less than 3 inches in diameter?
Double the amount of the diameter
How many steps should you leave above you on a ladder when on one
2 steps
What is the color of the ground wire in electrical?
Green
What are the lungs of a gas furnace?
Inducer motor and blower motor
What is the yellow wire for on the thermostat?
Cooling
What does PEX stand for?
Cross - Linked Polyethylene
What is a class F fire extinguisher used for?
Cooking oils and fats.
On an analog clock. The small hand is on 4. The long hand is on 6, What time is it?
4:30
What is a hydronic system with an example as well.
Its a water system (boilers)
What is job does the refrigerant solenoid have?
It is like a ball valve it allows refrigerant to flow through when proper voltage is provided.
What do we measure pipes in when plumbing ID or OD?
ID (Inside Diameter)
How far do material have to be away form breakers per code?
What does the red arrow on the clock represent
Seconds
What is thermodynamics?
How energy and heat moves/works and the study of it.
Draw the refrigeration cycle on the board. (Break down high and low side. label lines, and components.)
Answer on the board.
What is Capillary Attraction?
liquid attraction between two materials
Is food and drinks allowed in shops?
YES
Why is oil used for black iron?
To prevent rust and maintain a non-stick seasoning layer.