The scale on the dial of the pressure or altitude gauge on a hot water heating boiler shall be graduated to not more than _____ times the pressure at which the safety relief valve is set.
a. 1.5
b. 2
c. 2.5
d. 3
e. 3.5
Answer: d
The scale on the dial of the pressure or altitude gauge on a hot water heating boiler shall be graduated to not more than _____ times the pressure at which the safety relief valve is set.
a. 1.5
b. 2
c. 2.5
d. 3
e. 3.5
Answer: d