w/m eg45

tommyoil

Just got back from a weekend excursion. With the traveling it amounted to two 18 hr days. Put in an EG 45 steam boiler. The job is done. However, as soon as I closed the door of my truck after putting the tools on and collecting the $$$ the HO hit me with his plans for an addition. The bottom line is this; I would like to install a condensate loop consisting of one 14 section Sun Rad in a porch. I have no tappings to utilize other that the 3/4" drain tapping and the 2 1/2" tapping for the returns, both on the same side of the boiler(for those not familiar with the tapping configuration)I would like to use the 3/4" tapping for my supply and provide the necessary fittings to return into the 2 1/2". It will be piped as the last return on the return side of the hartford. Of course I will set it up using Flo control valves, return to supply by-pass, thermometer to moniter the temp. at the circ,R832,L4006, ect,ect. Does anyone see a problem with the tappings being so close to one another? I am familiar with the problems associated with short circuiting the cold return water but I'm hoping that the fact that it is only one rad. will make it a non issue. Should I be overly concerned? Does anyone think the boiler will have a problem keeping this sufficiently hot. I'm trying to avoid the double tap bushing approach I cant use a tankless as the block is not set up for it. Trying to keep it as straightforward as possible My Weil rep. doesnt THINK it will be a problem. Now, I would like to hear from you guys. As always, thanks.I'm going to bed now.Catch y'all tomorrow.

Ken_8

We have done this a few times

and always regretted it - but there really is no other choice.

The BTU "flow" will probably not be adequate with two closely spaced tappings. The water will simply circulate through that tiny region of the boiler water and not have time or area on its side to pick-up adequate BTU's. You could try the right side return tapping (2.5") as a way to get cross block flow, but only you can determine the logistical problems that may entail.

There are a few untapped bosses protruding on the EG that can be drilled and tapped. I have done it out of necessity but you immediately cloud warranty issues when you do so.

Somehwere in Dan's Library is a pictorial schematic of exactly what you want to do and how to lay it out. It is more conceptual than detailed but is more than adequate for the purpose intended.

You probably already saw it or know about it anyhow.

Just trying to help.

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tommyoil

return tappings

I have done these loops on many occasions w/ great success. But I always had tappings either mid block or at least opposite side of supply. The only pic. that I have does not indicate a tapping on the right side of the block and quite frankly I have never needed to take the jacket off and look. Is there a possibilty that a return tapping exists on the right side, opposite the 3/4 boiler drain tapping? That would be a home run. Logistics are not an issue.

Ken_8

There is a 2 1/2\" tapping

on the right side. It either gets plugged or would result in a very wet basement (:-o)

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tommyoil

Many thanks Ken

I always use the left side tapping for my returns which is the one that comes open when its shipped. I never realized there was another one as EVERY schematic I have does not show the other one. It makes sense I guess as the top has two tappings. I'll chalk this one up to the wall( Ken specifically)for saving my butt again. I dont anticipate a problem now. As I said its only one rad. on the loop. And, by the way I follow Dans picture to a tee, w/ regard to the piping procedure.