Deck 16: Residential Air 252dconditioning Control Systems

Question 1

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.

Answer 1

water-to-air packagewater to air package

Question 2

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.

Answer 2

air-cooled

Question 3

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

Answer 3

series

Question 4

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

Question 5

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

Question 6

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.

Question 7

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

Question 8

What is field wiring?

Question 9

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

Question 10

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

Question 11

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.

Question 12

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

Question 13

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

Question 14

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.

Question 15

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.

Question 16

Why are defrost controls used?

Question 17

What is a zone control system?

Question 18

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

Question 19

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

Question 20

What is a function of a reversing valve?