Gone for a header

Jrock

Had a William son 200 ,000 boiler installed the contractor undersized the line coming out of the top of the boiler & also under sized the equalizing line . Now the boiler is overfilling w/ the auto feeder on & shutting down on LoW water w/ it off the boiler glass g. Water is surging 3" up & down in the first 2-4 min of firing . -----I looked at specs the proper size is 3" & min. 1 1/2. My q. Is I only have 2" stock for threading pipe is there a way to pipe it w/ two lines both 2" out the top of boiler to fix problem ( and no I can't find contractor anymore ) to have him repair it . Thanks

Mark N

Supply Piping

No. It needs to be done in 3 inch pipe. The diagram shown in the manual is the bare minimum. Better would be 2 - 3 inch risers into a 3 inch header. This will produce very dry steam. Also boiler will need to cleaned and skimmed to clean the water and produce a stable water line.

Mark N

Return Line

Looking at your pictures in seems that you have a return that runs along your wall. That pipe looks now to be above the water line of your boiler. This is no good. The "A" dimension needs to be 28". This needs to be addressed as it looks like steam can now get into this return line and cause water hammer.

Hap_Hazzard

Which model do you have?

I don't see a reducer on that riser, and it doesn't look like there's room for a bushing. Can you explain exactly how this is piped?



I'd also like to see some more pictures of the return piping. Am I seeing a return coming from behind the water heater at about the height of the boiler? Was your previous boiler much taller than this one?



It looks like you may have a long horizontal return run that's about a foot or so above the current water level, and that's going to cause all kinds of problems with getting steam out of the boiler and condensate back in.

Hap_Hazzard

Not just water hammer.

It can cause exactly the problem he is experiencing.

Steamhead

I think it's bushed down

you just can't see it. This is basically the same boiler as the Weil-McLain EG series. We see very few of these installed correctly. 

Charlie from wmass

You can buy the dies I am selling

you can buy pre cut pipe and fittings too.

Paul48

Closer

I think if you look closer, that's a step in the foundation, not a horizontal pipe.

I'll correct myself....you are right, the pipe goes to the right.

Jrock

Dry return

Old boiler was never a problem with that same Dry return. New boiler is a Williamson gsa200 nsp

Jrock

Gsa200nps

Williamson gsa200nsp

Jrock

Sorry bad picture

Yes it is a curb in foundation But the 1" dry return is running full lea nth of house on that ledge back too boiler ........ Worked fine for 20 years that way thanks for any help !

Jrock

Reducer in jacket

Reducer in jacket & I knw the boiler manual calls for 3" rise & header w/ min. 1 1/2 eq line

Paul48

Measure

Check dimension "A". Measure from the bottom of the floor joists to the normal water line of the boiler, then check it at the point it drops to return and make sure it is 28" minimum above the NWL.

Paul48

Dry Returns

They must also be pitched, or you wind up with condensate in contact with steam.

Hap_Hazzard

It can't be.

It's lower than the header, which should be at least 24". (Looks like about 30".) I'd guess the part we can see is about 12-14" above the normal water line. It should be at least 28" above the MAXIMUM water level.

Hap_Hazzard

3" pipe

You can build your header with pre-cut threaded nipples. You can go with the lengths that are already there. The fittings might be slightly longer, but it shouldn't be critical. If nobody sells them locally you can get them online.

JStar

Header

Where are you located?



I make custom nipples when needed.

Jrock

Thanks

That may be a good option if I can't find a shop closer iam in rock away N.Y. Queens SSS. Super storm sandy Took may old willy Mac boiler .

Jrock

Checked out

It close 28 dimemention A Is 271/2 " above nwl

Hap_Hazzard

You mean like the header

is close to 3"?

Paul48

Jrock

I can't explain why it seemed to work with the old boiler. Each boiler and system can have its own peculiarities.That horizontal run slightly above the water line is causing your dancing water line. It provides a place for the water to go as the pressure begins to rise in the boiler.The boiler pressure is normally higher than the pressure at the end of the system. What puts the lost pressure back at the end of the system is that 28" column of water. It adds 1 psi back.Without that, you don't get condensate back into the boiler.Your setup has created a water column much less than the 28", and the system is struggling to equalize. Get the near-boiler piping corrected, and drop that return and you'll be much better off.