Gas Furnaces
Heat Pumps
Electric Heaters
Troubleshooting
Appliances
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
Within a voltage doubling circuit, this component is used to stop A/C
Diode
200
When fuel is burnt, it produces this harmful gas
Carbon Monoxide
200
What componant makes a heat pump a heat pump?
Reversing valve
200
What is balance point for heating?
When the heat being added to the structure, matches the heat that is being lost
200
How could a technician determine if a heat pump reversing valve is defective
Temperature differences (on true suction)
200
On an electric range, what switch energizes your elements
Infinite switch
300
Removes the flue gas from the heat exchanger chamber.
Induced draft
300
Design temperatures for a heat pump in the heat mode
Indoor 70F. Outdoor 45F
300
When utilizing a elecctric furnace this component must be altered
Thermostat
300
A abnormally low suction pressure in the heating mode of heat pump operation could indicate _________
Dirty outdoor coil
300
On a gas dryer, what switch is in series with the thermal fuse but in parallel to the main coil?
Radiant Sensor
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-strung
Yes
400
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
400
How much current is needed to energize a gas valve on a stove?
3 Amps
500
The manifold pressure of a L.P. fired furnace
11" w.c.
500
What causes the reversing valve to shift
Pressure
500
When is an electric heater referenced as a emergency heater
When the heat pump has failed
500
Given a three ton A/C system operating normally, the delta T should be
18-22
500
Who was the first manufacture of a top load dryer?
Fisher/Paykel
M
e
n
u