NATE Air Conditioning and Heat Pumps Practice Exam

A cooling anticipator in the control circuit is connected in ____ with the ____ switch of the thermostat.

1. parallel, cooling

2. parallel, heating

3. series, cooling

4. series, heating

The correct answer is: parallel, cooling

A cooling anticipator being connected in parallel with the cooling switch of the thermostat is a configuration used to improve the accuracy and efficiency of the temperature control system. The purpose of the cooling anticipator is to preemptively turn the cooling system off before the room reaches the setpoint temperature. This prevents the system from overshooting and cycling on and off too frequently, which can lead to discomfort and higher energy usage. When the anticipator is connected in parallel with the cooling switch, it allows the anticipator to influence the operation of the switch directly. As the room approaches the desired temperature, the anticipator heats up, which effectively reduces the current flowing to the cooling switch. This causes the cooling system to shut off slightly before reaching the setpoint, maintaining a more stable and comfortable indoor environment. In contrast, if the anticipator were connected in series with the heating switch, it would not provide the desired function in a cooling application. The series configuration would limit the operation of the cooling function entirely, leading to less efficient temperature control. Therefore, the connection in parallel with the cooling switch is crucial for achieving optimal performance in the cooling system.