Why should gauges be installed only after there is evidence that they are needed? A head pressure of 260 psig with R-22 corresponds to a temperature of ________. (Use the temperature/pressure...

Why should gauges be installed only after there is

evidence that they are needed?

A head pressure of 260 psig with R-22 corresponds to a

temperature of ________.

(Use the temperature/pressure relationship chart, Figure 3.15.)

A. 100°F

B. 110°F

C. 120°F

D. 130°F