Gas Furnaces
These are the two fuel sources of a gas-fired furnace
What are L.P. and Natural Gas
This is where the heat from a heat pump is gathered
What is outdoors
This energizes electric heaters
What is sequencer or contractor
If voltage is read across a fuse, what does this indicate
What is the fuse is blown
Within a voltage doubling circuit, this component is used to stop A/C
What is a Diode
When fuel is burned, it produces this harmful gas
What is Carbon Monoxide
This component makes a heat pump a heat pump
What is Reversing Valve
When the heat being added to the structure, matches the heat that is being lost
What is balance point for heating
How could a technician determine if a heat pump reversing valve is defective
What are temperature differences (on true suction)
On an electric range, this switch energized the elements.
What is Infinite Switch
This removes the flue gas from the heat exchanger chamber
What is induced draft
Design temperatures for a heat pump in the heat mode
What are 70°F indoor and 45°F outdoor
When utilizing an electric furnace this component must be altered
What is the thermostat
An abnormally low suction pressure in the heating mode of a heat pump operation could indicate
What is dirty outdoor coil.
On a gas dryer, this switch is in series with the thermal fuse but i parallel to the main coil
What is Radiant Sensor
This component shuts the furnace off in the event of over-heating
What is the High Temperature Switch
When is the reversing valve energized
What is depends on the manufacturer
Can an electric heater be re-strung
What is yes
If a gas furnace starts, runs for a few seconds, shuts down, and repeats this process, the problem is most likely
What is defective flame sensor/rectification.
This much current is needed to energize a gas valve on a stove
What is 3 Amps
The manifold pressure of an L.P. fired furnace
What is 11 inches of water column
This causes the reversing valve to shift
What is pressure
When is an electric heater referenced as an emergency heater
What is when the heat pump has failed
Given a three ton A/C system operating normally, the delta T should be
What is 18-22
This was the first manufacturer of a top load dryer.
what is Fisher/Paykel