In the illustration, the temperature of the hot-water heating system is controlled by the temperature of the hot water supply and the temperature of the __________. See illustration GS-0151.
A
central station
B
room being heated
C
hot water return
D
outside air
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Question 1 / 205eccef9dbacbc34ba4d45ed4
Question 1 of 205eccef9dbacbc34ba4d45ed4
In the illustration, the temperature of the hot-water heating system is controlled by the temperature of the hot water supply and the temperature of the __________. See illustration GS-0151.
In the illustration, the temperature of the hot-water heating system is controlled by the temperature of the hot water supply and the temperature of the __________. See illustration GS-0151.