If HW supply temperature is 160°F and CW incoming is 100°F, the rise is:

If HW supply temperature is 160°F and CW incoming is 100°F, the rise is:

• A. 60°F
• B. 50°F
• C. 120°F
• D. 40°F

Answer: (A)

Temperature rise is found by subtracting the inlet temperature from the supply temperature. Here, the hot water supply is 160°F and the cold water entering is 100°F. 160 − 100 = 60°F, so the rise is 60°F. The other numbers would come from different inputs or a reversal of the order, which isn’t how the rise is calculated in this setup.

Temperature rise is found by subtracting the inlet temperature from the supply temperature. Here, the hot water supply is 160°F and the cold water entering is 100°F. 160 − 100 = 60°F, so the rise is 60°F. The other numbers would come from different inputs or a reversal of the order, which isn’t how the rise is calculated in this setup.