Unit 18
Device that covers the opening of return air ductwork
Grill
Four-way directional valve that reverses the flow of refrigerant through a heat pump system
Reversing Valve
What do you call it when you tease a woman who doesn't shave?
Beating around the bush
A general guide used by qualified technicians to install residential and commercial HVAC equipment
Installation Manual
Best preventative maintenance a customer can perform
Air Filter
Distance discharged air flows from a register or diffuser
Throw
A mechanical procedure used to temporarily reverse the refrigerant flow in a heat pump to melt frost or ice on an outdoor unit coil
Defrost Cycle
What's brown and sticky?
An equipment-specific guide used by qualified technicians to service residential and commercial equipment
Operation and Maintenance Manual
The two sections of a heat pump
Indoor Unit and Outdoor Unit
The sum of the static and velocity pressures in a duct system.
Total Pressure
The outdoor temperature at which the output of a heat pump equals the heat loss of a building.
Balance Point Temperature
What was the first patented service uniform in the united states?
The Playboy Bunny uniform
The ________ is behind the blower access door's observation window on the furnace
Fault Indicator Led
A chart used in the field to troubleshoot HVAC equipment
Troubleshooting Chart
Piece of flexible material placed between sheet metal collars used to isolate rigid ductwork from the vibrations of an HVAC unit
Vibration Eliminator
A long length of copper tubing that produces a pressure decrease regardless of the direction of the refrigerant flow through it.
Capillary Tube Expansion Device
What state is it legal to hunt unicorns?
Michigan
The _______ is a valuable tool for diagnosing furnace problems
Sequence of Operation
Local codes should be checked before the ______ is connected to an existing drainage system
Drain Line
A supply duct system consisting of a single duct loop that connects all outlets (registers) together and includes supply ducts.
Perimeter Loop Duct System
Refrigerant line that contains a check valve to allow refrigerant to flow in the opposite direction of an expansion device
Bypass Circuit
Golf
Keeping the _________ clear will help with getting a good seal to catch all the debris
Filter Rack
______ Must not be operated without a working drain trap or condensate pump
Air Handler