A steam boiler must be equipped with two low water fuel cut-off devices when the boiler:
a. Has over 47 m² of heating surface
b. Has dual fuels
c. Is not continuously attended
d. Uses coal as fuel
e. Has two burners
Answer: C
A steam boiler must be equipped with two low water fuel cut-off devices when the boiler:
a. Has over 47 m² of heating surface
b. Has dual fuels
c. Is not continuously attended
d. Uses coal as fuel
e. Has two burners
Answer: C