Burnham V11

Unknown

Where in the boiler are you seeing this? At the cleanout plates or at the canopy? Is it possible that the boiler is seeing lower than normal return temperatures for prolonged periods of time and you have some condensing going on? Also, is this boiler set up for positive pressure over fire and through the boiler to the breech damper?

Glenn Stanton

Manager of Training

Burnham Hydronics

U.S. Boiler Co., Inc.

michael terry

Burnham V11

I had a look at some V11 gas fired boilers today.
Im used to seeing soot from oil, but what is the light dusting of white that I saw on the pins today.? does it affect heat transfer a great deal. do I need to brush the boilers out? might be a dumb question , but I have not seen this stuff in firetube boilers.
thanks
Mike

Unknown

Unknown

Sounds like

ash from dust being picked up and burned in the chamber . I have an oil boiler and see the whitish ash in there too .

michael terry

I am seeing this at the clean out plates on the side of the boilers. there are 2 13 section V11 units and a larger boiler I think its 17 sections. all the boilers have this accumulation. as for pressure over the fire , I dont know what they are supposed to be running, I have not actually checked over the fire,but at the breech they are all running about -.01 so they are probably + over the fire they are tied to a common stack, which I dont much care for, they lost a section on one boiler (cracked) for some reason they replaced 4 sections. they said the water side was all gunked up. right now they are making up 85 gallons of water a day. ( this is getting better all the time huh? ) another dumb question. Is there only supposed to be refractory on one side of the combustion chamber?
these boilers are under fired and running lean
one boiler has an input of about 750,000 btuh on low fire
that a little shy of the 1.3 million on the minimum input on the burner nameplate. all the burners are gordon-piatt
these are nice boilers I just want to get them dialed in
better than they are. theres not much I can do about the leaking underground pipes. I did propose the idea of a heat exchanger to keep all that make up water from eating the boilers. but I guess that cost too much.
thank you
mike terry

Unknown

Mike

Are these hot water boilers or steam boilers? Making up 85 galons of water a day is way beyond the limits if these are steam boilers. If they are hot water boilers there should be no makeup water. Based on the lost sections, it sounds as if you are dealing with some some serious "system" problems here that have to be dealt with immediately if not sooner.

These boilers are pressure fire boilers that should be running positive pressure all the way through the boiler to the outlet breech damper. After that outlet damper you will have negative draft like normal boilers. My advice here would be to have a qualified service agency take a close look at these if you are not sure how to deal with them. This is a serious investment in heating equipment and they need to be properly set up and serviced on an annual basis. Hope this helps.


Glenn Stanton

Manager of Training

Burnham Hydronics

U.S. Boiler Co., Inc.