Show:
Gas Furnaces
Heat Pumps
Electric Heaters
Troubleshooting
History of HVAC
100

Name two fuel source of a gas-fired furnace

L.P. & Natural Gas

100
Where the heat from a heat pump is gathered
Outdoors
100
How are electric heaters energized
Sequencer or contactor
100
If voltage is read across a fuse what does this indicate
The fuse is blown
100
First major railway distribution point in the U.S. for fresh food
Chicago
200
When fuel is burnt, it produces this harmful gas
Carbon Monoxide
200
Heart of the heat pump
Reversing valve
200

What Are heat strips made from

What is Nichrome

200

How could a technician determine if a heat pump reversing valve is defective

Temperature differences (on true suction)

200
What year was the first known artificial refrigeration system discovered
1755
300
Removes the flue gas from the heat exchanger chamber.
Draft
300
Design conditions for a heat pump
Indoor 70F. Outdoor 45F
300

Two ways to wire in electric heat strips in a heat pump

What is emergency heat and supplemental heat

300

An abnormally low suction pressure in the heat pump mode of operation could indicate _________

Dirty outdoor coil

300
The reason that the HVAC industry exists today
A quest to assist in industrial processes
400
This component shuts the furnace off in the event of over-heating
High Temperature limit
400
When is the reversing valve energized
Depends of the manufacturer
400

Can a electric heater be re-strug

Yes

400

If a gas furnace starts, lights up for a few seconds, shuts down, and repeats this process, the problem is most likely

Defective flame sensor/rectification

400
The person was considered to be the Visionary for A/C
Dr. John Gorrie
500
The manifold pressure of a L.P. fired furnace
11" w.c.
500

What causes the reversing valve to shift

24 v signal to the solenoid valve

500

When is an electric heater referenced as a emergency heater

When the heat pump has failed

500

Heat strips has volts and no amps and is not shorted to ground

What is Broken or open wire

500
In what year did Willis Carrier patent A/C and what was it first called
1908 / Apparatus for treating air