Which Heating method is most commonly used as a heat source in cold climates?
Natural Gas
Speaking well of your employer to others is an example of what?
Loyalty
Refusing to cut corners on a job is an example of?
What is the Purpose of the Condenser?
Transfers Heat from the refrigerant to the outdoors
Which device is used for energy conservation?
Heat Recovery Ventilator
Which device is used to maintain indoor Air Quality and control Bacteria growth?
Ultraviolet Light
If refrigerant is removed from a system and held in a storage tank for return to the same system, it is said to have been: Reclaimed, Recycled, Recovered or Restored?
Recovered
Poisonous
Oxygen is never used to purge an HVAC system because?
An explosion could occur under certain conditions
A substance harmful to your health is said to be what?
Noxious
A Defrost cycle is required in what type of system?
Refrigeration Systems
Development and delivery of training programs is typically a function of who?
The Manufacturer
A leak in the vent pipe of a gas furnace is a concern because it can release what?
Carbon Monoxide
Engineering assistants are most likely to be employed by who?
Equipment Manufacturers
A company that would respond to a service request for a chiller would most likely be?
Mechanical Contractor
How many classroom hours is required for instruction?
144
Local building codes are based on?
International Building Code
What is the 4 main elements of a mechanical refrigeration system?
Compressor, Evaporator, Condenser and Expansion Device
A Hydronic system circulates what?
Hot water
Phosgene gas can be produced when some refrigerants are exposed to what?
A Flame
What does the Expansion device in a mechanical refrigeration system do?
Slows the flow of refrigerant and provides a pressure drop.
An employee who works as a test technician most likely works for who?
Manufacturer
What is the purpose of the Evaporator in the Refrigeration Cycle?
Transfer Heat from the air to the Refrigerant
How many hours each year does a typical apprenticeship trainee spend in the OJL?
2,000
in order to reduce duct leakage, ducts should be sealed with?
Mastic