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Exam 16: Residential Air 252dconditioning Control Systems

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The compressor is the smallest electric load in an air-conditioning system.

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Question 2

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The ____________________ is a refrigeration system that reverses the refrigerant flow to effectively heat a structure in the winter.

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A(n) ____________________ heat pump system uses air to transfer the heat to the conditioned space and water as the heat transfer medium for the heat exchanger used as the condenser in the cooling cycle and the evaporator in the heating cycle.

Why are defrost controls used?

The most widely used types of packaged units in residential air-conditioning applications that use air to remove the heat from the condenser are ____________________ packaged units.

A split system is designed in two sections: a condensing unit and a device that is used for the air flow in the system and the heat source if it is not a heat pump.

What is a zone control system?

The air flow on most structures that use a fossil fuel for a heat source have a(n) ____________________ that would be used as an air supply.

List four elements of the air-conditioning system that the total system control module must supervise.

Most safety controls used in residential control systems are connected in ____________________ with the contactor coil.

The cooling cycle of the heat pump is the same as an air-conditioning system.

The ____________________ is the portion of a split air-conditioning system that is mounted outside and generally contains the compressor, the condenser, the condenser fan motor, and the necessary devices to control these components.

The condensing unit is used to remove the heat from the refrigeration system that had been absorbed by the evaporator.

What is field wiring?

Heat pump control systems and air-conditioning control systems are similar in many ways.

The evaporator fan motor is controlled by an indoor fan relay controlled by the ____________________.

In early control systems, almost all components necessary for the operation of the air-conditioning system were mounted on the wall near the condensing unit.

The first basic circuit of almost any residential control system is the device that stops and starts a compressor.

The ____________________ heat pump uses air as the heat transfer medium in both the indoor and outdoor coils.

What is a function of a reversing valve?