HVAC 1
Name 2 Fuel Sources for a Gas fired Furnace
L.P. & Natural Gas
Federal certification required to handle refrigerants
EPA
What causes the reversing valve to shift
Solenoid (Pressure)
he Gold piece that is on your gauges that the refrigerant flows thru is called
The Manifold
How much PSI is suppose to come across the Gas Regulator?
7-11
The Evaporator Produces...
Condensation
What is the Heart of a Heat Pump?
Reversing Valve
All Molecular motion stops at what degree Celsius?
-273 Celsius which is -460 Fahrenheit
What does the Expansion device in a mechanical refrigeration system do?
Slows the flow of refrigerant and provides a pressure drop.
Which Heating method is most commonly used as a heat source in cold climates?
Gas Heat
This removes the toxic gas from the heat exchanger chamber
Flue Draft Pipe
What device receives 24V and throws voltage when calling for Cooling
The Contactor
How are Electric Heaters Energized?
Sequencer (Relay) or Contactor
When fuel is burnt, it produces this harmful gas
Carbon Monoxide
Where is the Heat from the Heat Pump Gathered?
Outdoors
Name the 3 terminals on a Compressor
Common, Start, Run
What must be removed from the condenser unit before starting to braze?
Shrader Valve Pin
If a gas furnace starts, runs for a few seconds, shuts down, and repeats this process, the problem is most likely
Defective flame sensor/rectification
Term applied to heat absorbed above a refrigerants saturation point
Superheat
When is an electric heater referenced as a emergency heater?
The manifold pressure of a L.P. fired furnace
11" of W.C.
A "Lower Flammability" refrigerant is in what Safety Group?
A2 or A2L
If voltage is read across a fuse what does this indicate
The Fuse Is Blown
Name the 5 types of Compressors
Scroll, Rotary, Centrifugal, Scroll, & Screw
The HVAC system used for heating has a component that should be inspected for leaks, cracks, or corrosion during maintenance.
The Heat Exchanger