Chapter 95

Question 0

Before starting up a hot water boiler, the following must be ensured:
A) the circulator is off
B) the boiler has a valid inspection certificate
C) the low water cutoff is in the “tripped” position
D) the boiler control is in the ON position

Answer 0

B) the boiler has a valid inspection certificate

Question 1

The pressure relief valve on a hot water heating boiler should be set:
A) 25% lower than operating pressure
B) 10% lower than operating pressure
C) 25% above operating pressure
D) 20% lower than operating pressure

Answer 1

C) 25% above operating pressure

Question 2

During the warmup period of a heating boiler, the main burner goes out. The operator should:
A) shut down the boiler immediately, purge and restart
B) shut down the boiler, close the fuel valves and determine the cause of the problem
C) try to relight the burner immediately
D) check the altitude gauge to ensure there is enough water in the system

Answer 2

B) shut down the boiler, close the fuel valves and determine the cause of the problem

Question 3

The maximum operating temperature in a hot water heating boiler should never exceed:
A) 95*C
B) 121*C
C) 150*C
D) 168*C

Answer 3

B) 121*C

Question 4

The minimum temperature at which a hot water heating boiler should be operated to prevent condensation is:
A) 65*C
B) 95*C
C) 77*C
D) 88*C

Answer 4

C) 77*C