New Burner and stand question

[Hoosier]

I have been gathering the equipment needed for a HERMS brewstand (similar to the Morebeer 1100 and Brutus 10) and started assembling this weekend. I have 2 of the medium size 24 tip burners and I am blown away by the output. I was testing it out and found that the bottom ring of my keggle was glowing orange so i shut it down and figured I would see what you all thought. Is this normal? I was using a turkey fryer jet burner before and never had the issue. For those of you that have the same, where do you keep the throttle set?

 

[bdupree]

i built my brewstand with 1/2" rebar. I use a turkey fryer burner and the rebar is glowing bright orange the whole time. I'm sure it's normal with a nice burner.