What's Wrong With This Picture

New England SteamWorks

Weil McLain EG-75:

nicholas bonham-carter

Only one takeoff?
Rusty sections?
Not on a concrete pad?—NBC

Dave0176

Weil-McLain flipped us the bird!!! More maybe coming on that!!!!

Dave0176

Went to the 63 series myself.

New England SteamWorks

We love our Weil distributor. But not enough...

On to Peerless 63 series.

Leon82

They missed a hole

BobC

They are saving all those holes to augment the one the management has.

Bob

McSteamer22

1 hole 🤮
That water line is going to be tilted like a black diamond slope

ChrisJ

That seems a bit much to me.

My argument was EG-30 - 55 is fine with one 3" tapping.

But EG-75...........I don't think I'd want one like that. I thought they were only doing this on the smaller ones? Didn't they previously require two risers on one of these in the manual?

ch4man

pfft, a real tech would just drill and tap another one...

JK!.......

ChrisJ

ch4man said:

pfft, a real tech would just drill and tap another one...

JK!.......

I work in a machine shop and we could easily do that here without buying a $500 tap + a several hundred dollar drill.

However, I'm sure it'll still void the warranty on the block.

ethicalpaul

Was this one a surprise to you like what happened to Dave? Did you pack it back up and return it?

If they did testing and found that one performed fine compared to two it still seems like they’d want to let installers pick the side!! Of course they wouldn’t want to have to stock/track two different models for that so the answer would be to have two holes! This story writes itself!

pecmsg

So they bolted and sealed it before they realized somethings wrong?

ethicalpaul

Side question: is this a 5-section or do you count the end units also?

Gordy

I have a question, and I’m not fluent with steam, but I’ve been following the bird thread

If WM did this to save money. How much did they spend changing the installation manuals?.........


I’m not sure how the manufacturing process worked from casting section to drilling, and tapping the section. Same people? Shipped to another facility to do the machining ?

That’s a large chunk of cabbage they are saving by shipping only half as many of that casting for machining,? Let alone the cost of the process.

SeanBeans

What kind of plugs/caps are you using on that boiler? They look smooth? @New England SteamWorks

New England SteamWorks

ethicalpaul said:

Side question: is this a 5-section or do you count the end units also?

7 section

ChrisJ

Is that a HW boiler?

New England SteamWorks

> @ChrisJ said:
> Is that a HW boiler?

It could be with hot water trim. But this one has the steam trim.

Ironman

What are you gonna do with it, install it or return it?

Gsmith

I actually don't think the water line will slope that much in that boiler. EG-75 according to W-M puts out 249,000 btu/hr steam. At 970 btu/lb to evaporate water that is 256 lb/hour of water which at 8.33 lb/gallon is 30.8 gallons per hour or 1/2 gallon per minute, roughly. Without measuring or looking up the specs the steam chest (circular section running front to back) looks to be about 2 times the 3" outlet opening or about 6" in diameter. When steaming, the roughly circular boiler sections would be about 1/2 full or a water flow area of about 0.2 square feet. If all the water flowed in at the front of the boiler, was heated to steam and only exited the boiler at the back in one 3" steam outlet the water line would be depressed much less than 1/4" from front to back, just using pretty common Manning (gravity flow) equation formula for flow in a half pipe section. Think of it in common terms how much would the water line in a half 6" diameter pipe drop in the roughly 30" length front to back of the boiler if only 1/2 gallon per minute were running in that 1/2 pipe (common garden hose is about 5 gallons per minute, common faucet about 2 gallons per minute). But it is probably much less slope than that as the condensate return comes in about half way back the boiler not at the extreme opposite side to the outlet. The W-M engineers probably calculated this water line slope and found it was a very small fraction of an inch so decided to use only one outlet. Of course that doesn't eliminate the problems of piping flexibility which is eliminated with just one outlet, a valid point for installers.

Another way to think about it is: if the steam velocity for this boiler is acceptable in one 3" outlet (as far as producing dry steam--I haven't checked the tables on that as LAOSH is at home) then the steam velocity in the steam area above the water line is one half the velocity in the 3" steam outlet (if the steam chest circular area is in fact about the equivalent of a 6" diameter pipe--eyeball-o-metric measurement from the photo).

I'm not a boiler designer but have some facility with hydraulic calculations.

Maybe @Jamie Hall would like to weigh in on this.

New England SteamWorks

> @Ironman said:
> What are you gonna do with it, install it or return it?

New England SteamWorks

No choice. The old boiler had asbestos, so the abatement company removed it the prior day. So no heat when the surprise showed up.

New England SteamWorks

Of some interest: this counterflow has no drips. Instead the supplies where upsized by a factor of two. The largest main is 4”.

STEAM DOCTOR

They still have the second return tapping. 34 fps @ 1psi

ChrisJ

So.

How did it seem to run with clean water?

STEVEusaPA

Beautiful, as always. Shouldn't the smaller flue pipe from the water heater be above the larger flue pipe?...just wondering.

Fred

Oh! I guess when we see a WM installation with a boiler that size, we'll have to ask if it was installed pre or post 2018 before we gripe about the installer cheaping out on a few more fittings/nipples, to do it right.

Boiler wrestler

Keep your ears open for more information on this. Reason may prevail.