Depending on the outside temperature and the heating habits of residents, the heating requirements of rooms, apartments and entire buildings are constantly changing. Radiator thermostats and room temperature controller systems compensate for these fluctuations.
Know how Indoor temperature controlling works in this Indoor temperature control quiz
The heater would remain energized until the fusible link melts.
The interlock switch would be de-energize the electric heater.
The unit will still heat the area, but it would take longer to do so.
Both a and b are possible.
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Technician "A" is correct. Technician "B" is correct.
Technician "A" is correct. Technician "B" is incorrect.
Technician "A" is incorrect. Technician "B" is correct.
Technician "A" is incorrect. Technician "B" is incorrect.
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Install the heater at an angle.
Cut a slot in the duct work and allow the heater to protrude 4 inches out of the duct.
Return the heater to the supply house and obtain the correct size heater.
Cut the ends of the coils off the heater and increase the fan speed.
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Copper
Nickel steel
Nickel chromium
Aluminum
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Ultraviolet rays
Infrared rays
Ionization
Refraction
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Natural draft convectors
Forced draft convectors
Forced draft conductors
Radiant heaters
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Natural draft convectors
Forced draft convectors
Forced draft conductors
Radiant heaters
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Natural draft convector
Forced draft convector
Forced draft conductor
Radiant heater
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29,319
31,062
34,130
35,875
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Start the unit if the thermostat malfunctions
Ensure that the fan stops when the unit cools down
Start the unit prematurely on a cold day
Open the circuit to the element if the furnace overheats
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Be exposed to radon gas
Be more susceptible to lung cancer
Smell the pungent odor of the radon
Both a and b
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Locating and eliminating the source of contamination
Providing adequate ventilation
Providing methods for cleaning the air
All of the above
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Ionizing sections
Charcoal filters
Pre-filters
All of the above
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Does not clog up as quickly as a standard filter
Is able to remove more dirt since the surface area is larger
Costs less than a standard filter
Both a and b
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Charcoal
Silica gel
Fiberglass
Foam rubber
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Condense
Evaporate
Be ionized
Be filtered
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Moisture
Light
Infrared
Temperature
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CO2
Electronic ions
Tri-valent oxygen
Tiny water droplets
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Electric baseboard and radiators
Evaporators and condenser
Registers and grills
Blower and damper
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Thermocouple and limit switch
Glow coil and static pressure disc
Transformer and fan relay
Stack switch and CAD cell
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The cooling requirement
The heating requirement
Either heating or cooling requirements
Both heating and cooling requirements
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Natural gas heat
Electric heat
LP gas heat
Oil heat
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Ceramic block
Carbon block
Adjustable thermistor
Adjustable wire wound
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Combination
Fixed
Adjustable thermistor
Adjustable wire wound
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In series with the original transformer
As a separate circuit
In parallel with the fan relay
In parallel with the compressor contactor
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Fungi
Bacteria
Algae
All of the above
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10
50
100
125
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20% to 40%
30% to 50%
40% to 60%
50% to 70%
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70
80
90
95
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Duct size
Fan speed
Required air volume
All of the above
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400 CFM/ton
1,200 CFM
1,200 CFM/ton
Both a and b
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Lower the thermostat setting.
Add dampers.
Insulate the duct.
Both a and c are correct.
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340
360
400
420
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The high pressure gauge will read the high side pressure and the low pressure gauge will most likely be the RETARD range
The high pressure gauge will read the high side pressure and the low pressure gauge will read the suction pressure
Both gauges will read the suction pressure
The high pressure gauge will read the suction pressure and the low pressure will read discharge pressure
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The auxiliary heater turns on to "temper" the air.
All of the dampers close automatically.
The indoor fan motor turns off.
Both a and b are correct.
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Florida
Maine
Hawaii
Mexico
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Refrigerant boiling in the coil
Pressure reduction in the condenser
Change in the action of the metering device
Low and high side pressure difference
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35° F
45° F
50° F
65° F
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Inside and outside coil outlets
Inside and outside metering devices
Compressor and the defrost relay
Compressor, accumulator, and reversing valve
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Compressor and the condenser
Reversing valve and the condenser
Reversing valve and the accumulator
Compressor and the reversing valve
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Difference of the pressure in the fan compartment and the temperature of the coil
Difference in pressure between the outdoor pressure and the fan discharge pressure
Difference in the pressure of air through the outdoor coil
Difference in pressure of the refrigerant in the condenser and the pressure in the coil
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Countersink
Parallel flow
Counter flow
Bias flow
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Steel
Aluminum
Nickel
Cupro-nickel
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Ground loops
Thermal loops
Water loops
Both a and c
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Cool down the condenser
Heat domestic water
Keep the well water from freezing
Both a and c
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Smaller diameter pipes
Ease of removing trapped air
Lower installation costs
Less antifreeze is required
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Smaller diameter pipes
Ease of removing trapped air
Simplified flow path
Higher heat transfer per foot
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10°
20°
50°
5°
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