A. High amount/current of combustion air
B. Low amount/current of combustion air
C. Preheated secondary air
D. Very little excess air
Correct Answer: High amount/current of combustion air ✔
Last Updated: March 08, 2019
A. High amount/current of combustion air
B. Low amount/current of combustion air
C. Preheated secondary air
D. Very little excess air
Correct Answer: High amount/current of combustion air ✔
Last Updated: March 08, 2019