All rights reserved. Printed in the United States of America. Page 4 a word that matches the picture (Listening Comprehension standard score = 84) and generate words within a category, describe scenes, and give directions (Oral Expression standard score = 83).
The power is supplied by a transformer, and when the thermostat makes contact between the 24 volt power and one or two of the other wires, a relay back at the heating/cooling unit activates the corresponding heat/fan/cool function of the unit(s).
Energy usage is another matter. Most folks realize that the warmer we set the thermostat in the winter, the higher our heating bills will be. And the cooler we set it in the summer, the higher our cooling bills will be. In both cases were making the system run longer. Our home is our castle, but we must remember that our castle is merely a box ...