Gas burner that is controlled by a needle valve
A. Packaged boiler gas burner
B. Ring type gas burner
C. Pre-mix gas burner
D. None of the above
E. A and B
Answer: C
Gas burner that is controlled by a needle valve
A. Packaged boiler gas burner
B. Ring type gas burner
C. Pre-mix gas burner
D. None of the above
E. A and B
Answer: C