firing rate vs nozzle rate

Live/Learn

Hi wallies! doing my annual cleaning and adjusting my boiler and bock hot water heater. I have a beckett on my burnham V83 and I'm firing the unit with a .85- 60 degree A nozzle. I get good readings with air set @ 6-1/2 but flame looks pulled back (not filling the firebox). I get a better flame by cutting the air back but this messes up my readings. Would I do better by using a low firing rate baffle in this unit? Live/Learn

Al Letellier_9

firing rate

What's wrong with a "pulled back looking" fire if the readings are OK and efficient. You don't have to fill the firebox to have an efficient flame. Install the specified nozzle for the unit, adjust to peak efficiency and let it be.

Ron Schroeder

The flame should not touch the firebox at all.

Bob Harper_2

eyeballing

it can be dangerous. You should set it to mfrs. spec then perform combustion analysis and make adjustments within mfrs. specs.

burnerman_2

i agree

yes the flame is more contained if u will over the past ten years i noticed the angle go .85 80 b to 85 45 b now .85 60 a and the boiler seems to start smoother and run better as the others said if u got the #,s letter b there r two levers lever a and lever b if it ain't broke royboy

Live/Learn

Thanks all!

I guess I was used to seeing the flame from older burners where the fire was larger due to different setup on air and pump pressure. I'll stick with the manufacturtors requirements and be done with it. thanks Live/Learn

mtfallsmikey

But...

Back in the day, L/L, we wanted the flame to fill the whole area...back before the everyday use of combustion analyzers,cheap high-sulfur fuel oil...so you were not entirely off-base, just in the wrong century!