A gradual increase in stack temperature is an indication of:
a. Correct burner operation
b. Poor operator skill
c. A defective stack thermometer
d. Boiler corrosion
e. Unclean heating surfaces
Answer: E
A gradual increase in stack temperature is an indication of:
a. Correct burner operation
b. Poor operator skill
c. A defective stack thermometer
d. Boiler corrosion
e. Unclean heating surfaces
Answer: E