Coal Boiler Added to an Existing OB System

coal stoker · Post by **coal stoker** » Sat. Jun. 27, 2015 5:36 pm

I have a thread in the EFM heating section (EFM520)
But I am looking for some advice on the tie in of my EFM to my existing system, right now I have my OWB tied in on the return side of the header with a ball valve diverting the flow.
My thought is to repeat this on the supply side for the EFM.
I posted some pics for the experts to look at.
i welcome any feedback thanks guy's
CS

waldo lemieux · Post by **waldo lemieux** » Sat. Jun. 27, 2015 5:44 pm

Why wouldnt you just hook the efm up where the owb is now? So long as that has been satisfactory.....

coal stoker · Post by **coal stoker** » Sat. Jun. 27, 2015 5:54 pm

WL,

i want to keep the OWB tied in for now and thought that I might get more heat to the load on the boiler by using the supply header, that way I am not heating the OB first before it gets to the zone that is calling.

Regards
CS

waldo lemieux · Post by **waldo lemieux** » Sat. Jun. 27, 2015 6:01 pm

So, let me get this straight.... your gonna heat the owb with the stoker? good god man you've gotten Rabies. Go to the DR immediately and don't bite anybody

coal stoker · Post by **coal stoker** » Sat. Jun. 27, 2015 6:08 pm

Yeah,

I also have unlimited supply of coal and money.

If you look at the pics you will see some isolation valves, these are used in the summer months to isolate and burn the OB.
I can add the I.5" from the EFM to either header just looking for some advice on the best choice.
It is nothing a sawzall and a union can't fix.

Regards
CS

coal stoker · Post by **coal stoker** » Sat. Jun. 27, 2015 6:10 pm

Oh that's right I new I forgot to get that Rabies shot

waldo lemieux · Post by **waldo lemieux** » Sat. Jun. 27, 2015 6:15 pm

Im thinkin its gonna come down to where it works "cleanest" in the piping . If your the one thats done the rest of the plumbing there, Ima say you don't need any input

. dive in......

coal stoker · Post by **coal stoker** » Sat. Jun. 27, 2015 6:33 pm

A combined effort, but yes I have done some of it and a friend has done the rest, fairly new install only about 10 years old.
I am always tinkering with things I guess that why it looks a little messy.
I will be starting soon and will post some pics of progress.
1.5" supply and return with an 1.5" bypass on the coal side, Extrol 30 will be added for the additional volume, there is a 60 already on the system.
This a four zone system that is feeding 3750 sqft. 3 heating zones and an indirect DHW.

coal stoker · Post by **coal stoker** » Sat. Jun. 27, 2015 7:01 pm

Oh I forgot to mention,

I do not know if adding a Taco 007 to the loop from the coal boiler would compete with the already existing circulators.
i just don't want to have a volume of tepid water waiting for a zone call.

Any thought on this?
CS

waldo lemieux · Post by **waldo lemieux** » Sat. Jun. 27, 2015 7:32 pm

I would say that it depends on how far away the unit is. 1.5" pipe can add up fast . I have about 40' of one inch as my stoker is in the garage and I don't use a extra pump. The system doesnt act any differently when I use the propane or coal,,,,

coal stoker · Post by **coal stoker** » Sat. Jun. 27, 2015 7:43 pm

Not quite sure how to respond.
I will have about 40 linear feet of 1.5" on the extension from the coal boiler. it is amazing how that adds up when you start measuring out the runs.
Maybe just a spool piece in supply side in the run with circulator isolation valves, then if there is an issue I can slip it into the run later.
Just a little wiring to add, what do you think?

Regards,
CS

waldo lemieux · Post by **waldo lemieux** » Sat. Jun. 27, 2015 8:14 pm

That will do, but I think you should be looking for anything that might have to be done to remove the OWB as that will be next. If your gonna try to sell that thing I think you could cross windy Dave off your prospective customer list , those escaped convicts would be a more welcome sight for him

windyhill4.2 · Post by **windyhill4.2** » Sat. Jun. 27, 2015 8:30 pm

waldo lemieux wrote:That will do, but I think you should be looking for anything that might have to be done to remove the OWB as that will be next. If your gonna try to sell that thing I think you could cross windy Dave off your prospective customer list , those escaped convicts would be a more welcome sight for him

The convicts would likely be less work than the OWB, no more OWB for us,NEVER again !!

waldo lemieux · Post by **waldo lemieux** » Sat. Jun. 27, 2015 8:32 pm

windyhill4.2 wrote:
waldo lemieux wrote:That will do, but I think you should be looking for anything that might have to be done to remove the OWB as that will be next. If your gonna try to sell that thing I think you could cross windy Dave off your prospective customer list , those escaped convicts would be a more welcome sight for him
The convicts would likely be less work than the OWB, no more OWB for us,NEVER again !!

see? Told ya

Post by **Rob R.** » Sun. Jun. 28, 2015 11:45 am

You could easily put two tee's in the vertical supply riser for the EFM...but if you got rid of the OWB it would be simple to hack off that plate exchanger and connect to the two tee's in the return.

Coal Boiler Added to an Existing OB System

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