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Advantage of a closed loop heat pump system
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Name four types of gas burners.
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Describe a Split-Phase motor:
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A condensing gas furnace uses__________ from a condenser type heat exchanger to improve the furnace efficiency
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A process where the combustion blower motor runs for a specified time period before the furnace lights to ensure safe ignition is called:
Low voltage controls are used for which of the following reasons?
The major components of closed loop heat pump systems
What is smart valve system?
A common unit of electrical power is?
It takes approximately____________ cubic feet of air to produce 2 cubic feet of oxygen to mix with 1 cubic foot of natural gas to produce 1,050 Btu when burned.
______ load is when a space is to Hot
Describe the function of a multi poise or multipositional furnace.
What is the function of the servo pressure regulator in a modern combination gas valve?
define Azeotrope:
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The limit switch shuts off the unit if:
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True or Falls: an orifice measures the quantity of gas to the burner as well as direct the gas stream.
When the furnace is two stage, there are how many heat anticipator
A (n)____________ is a furnace's electronic module timed safety shutdown period which may reoccur many times.
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Electric unit heaters are usually installed:
At what rate of speed must the motor attain before the start relay disconnects the start winding and capacitor?
When there is a pilot proving device failure and both the pilot and main gas valves are shut down, there is:
