burhnam question

joel_4

i'm looking at two messed up steam burhnams this week , one she sent a picture of. You gotta love this if i get time i'll post it. There is a 2" nipple out of the boiler that is about 3" tall , on that is an elbow and then a reducing bushing to 1.25" copper which then pitches away from the boiler before going up to the header. I think if I skim it it will be ok (ya right). Ok on to the real question I looked at one tonight that basically boils out all the water and then the feader comes on and floods it, sound familar? The boiler is 210k btu input gas a Burhnam a Pin model 542sgft of steam. It's 1 year old sorry don't have the notes as to the rest of the model#. Question should this boiler be piped with two risers? it's piped with 1 two inch now. No instructions on site just came back and i'm too tired to surf through burhnams site looking for it. somebody here has GOTTA know.

Unknown

Yes Joel

What you have there in the second case is an IN7. Definitely use both risers. I have attached some drawings depicting suggested piping both regular and dropped header. Thanks for caring enough to make these boilers right! Hope this helps.

Glenn Stanton

[Deleted User]

well, its always better

to use two risers to decrease velocity twice as much..should give drier steam at the lower velocity..we never ever use one riser just for this reason alone..if the boiler would come with three taps, we would use all of them for risers..

joel_4

right

That's assuming there are 3 taps alot of little 3 section boilers only have 1 to begin with. I guess I'm asking if Burhnam wants it that way at this BTU level cause i'm sure they will go after the plumber who did it and it can't just be my opinion it's gotta be fact.

Joel_3

Glen

Thanks very much for your help. I was told this was the 3rd boiler in 19 years. I wonder how many you guys eat under warrante for these problems. I just sold a repipe job on another one that failed in 4 years. the piping was wicked bad it cracked wide open. They replaced it last winter and repiped it the same way in copper with a 3/4 or 1" return and an 1 1/4 supply to a bullhead t it would probably only live 4 years as well. I'd post all the pics but ican never seem to shrink them right and ijust don't get the time to come on here much.

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dk_2

IN7 piping

there, ( I am newbie here)

My house has the burnham Independent IN7, but have the different piping then what you post.

1, how to set the L404A pressurtrol to get the 1 PSI operation pressure? if I set the differential subtractive at 2PSI(least on scale), the main( the scale is 2-5, then 5-10) suppose to?

2, my house is 2 story house, and around 19' X 62'(house siez) on each floor, is the 212 K btu appropreiate or too much?

3, my system sit on the middle, and has two main seperate supply pipes go to rear side and front side, acrossly one riser to one main supply, and the shorter rear side don't have the return,,is that correct setting?

Thank you very much in advance!

dk

Steamhead

To set the pressuretrol

turn the Main to 1-1/2 and the Differential to 1. This is about as low as that control will go. These settings are fine for a 1-pipe system but may be too high for Vapor.

The size of the boiler depends on how big your radiators are. Get a copy of Dan's book "E.D.R." to find out what you have.

That short rear main may be "Counterflow". You have to be real careful with these. More info can be found in Dan's book "The Lost Art of Steam Heating".

You can order these and other books on the Books and More page of this site.

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dk_2

IN7

Thank you , steamhead, there some updates here:

Actually,the two risers connected to the one piece hearder, then it goes two main supply pipes( rear and the front).

The Honeywell L404A1354 pressurtrol limit I have, the main is scaled from 2-5psi,5-10psi and 10-15psi,( I assuming that is the cut out), the 2 psi looks like the least point here. The diff subtractive has 2psi the base, then 3,4,5,6( I assuming is the cut in pressure)should that mean the half between to 2psi and the bottom of the scale is 1 psi scale?so correct me if I am wrong.

I purchased The Lost Art of Steam Heating book from Dan here few monthes ago and reading it( geat book), but I learn slow myself.

dk

Steamhead

That's correct

go for it!

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