Rebuild My EFM 520

Post by **Rob R.** » Sun. Apr. 17, 2016 11:44 am

What are you plans for that B&G circulator?

dave28 · Post by **dave28** » Sun. Apr. 17, 2016 11:59 am

I plan to plumb the Bell & Gossett 102206 off the return side. I'm going to have to build some type of support bracket to hold it up as it is around 30 lbs.

Post by **Rob R.** » Sun. Apr. 17, 2016 1:00 pm

I suggest swapping it with a smaller circulator, like a Taco 007. The difference in energy consumption is significant.

dave28 · Post by **dave28** » Sun. Apr. 17, 2016 6:32 pm

The Taco 007 is only good for 8.5 ft of head max. I'm needing about 12'.

hotblast1357 · Post by **hotblast1357** » Sun. Apr. 17, 2016 6:46 pm

Install two 007's, bolted together.

Post by **Rob R.** » Sun. Apr. 17, 2016 7:45 pm

dave28 wrote:The Taco 007 is only good for 8.5 ft of head max. I'm needing about 12'.

That was just an example, since I did not know your install details like length of piping. If you have already determined that the pump head is 12, something like a Grundfos 15-58 should be a good fit - it would provide about 7 gpm at that pump head on high speed.

http://www.supplyhouse.com/Grundfos-59896341-UPS15-58FC-3-Speed-Circulator-Pump-1-25-HP-115-volt-4701000-p

87 watts vs. 220 watts for the big B&G. If you plan on running the circulator all the time, the difference in power can easily be $10 per month.

dave28 · Post by **dave28** » Mon. Apr. 18, 2016 11:04 am

Rob,

Thanks for the reply. I'm my garage under my house I am running 5 runs of about 1200' of 1/2" Pex-Al-Pex. When I decided to concrete the garage my son suggested I install pex in case I ever decided I wanted to heat the garage. Best move I ever made. Well seeing the pex just sitting there I decided I wanted to heat the garage since I enjoy working in there. I picked up a used but working 50 gallon smart electric water heater to heat the floor. I'm not sure what happened but the brain on the water heater would cut down from 230v to 115v. I'm not sure if it couldn't understand the constant flow. I thought maybe the brain was bad so I purchased a new one. Same thing happened, it would start off running 230v and then cut down to 115v which made my electric bill sky rocket.

In the picture below is my current garage setup. I decided to go with an on demand water heater which has worked well but it does use a lot of electricity which is now the reason I want to get the 520 running. The first pump I used on the system was a Grundfos UPS15-58FC 1/25 HP but it seemed I could only get it flow about .2GPM on each run. I decided to go to a Grundfos UPS26-99FC 1/6 HP which flowed slightly better but not much so I'm not sure why I can get better flow. My current on demand heater is a Iheat AHS27d capable of heating at 3.62 GPM.

I just built a 12'/18' buiding next to my garage to put my 520 in. I have 2 runs of 1" ThermoPex that run approxmatley 3' underground from my shed to inside my basement. Each run 30' long and has two 1" lines. One run is for the boiler and the other run is for DHW. I am planning on running 1" pex up to my Aspen air handler which will be up on the 1st floor of my house which is approximatley 50' from where the ThermoPex enters the basement. So I'd estimate the total 1" pex run would be 90-100' from the boiler to the air handler.

Thanks,
Dave

Post by **Rob R.** » Mon. Apr. 18, 2016 12:51 pm

I think you get the award for the cleanest garage. Looks like a nice setup!

Those flow indicators on radiant manifolds are notoriously inaccurate. I would go back to the smaller pump and judge its performance based on the temperature of the floor and the garage. My brother is heating a 30x50' basement with a similar arrangement of pex tubing in the concrete, the Grundfos UPS15-58 does a fine job with it.

dave28 · Post by **dave28** » Mon. Apr. 18, 2016 1:44 pm

Rob,

Trust me, it's nowhere near that clean at the present time. I still have left over material in there from building my shed & deck, leftover metal roofing plus 2 Harleys, 1 quad and a Corvette frame.

Do you think running the B&G pump will hurt me other then a little more money in operating costs?

I am still in the learning stages of doing all of this so I am not sure if I should have the pump constantly running or have it only come on when there is demand for heat. Opinions?

Thanks,
Dave

dave28 · Post by **dave28** » Sat. Oct. 22, 2016 8:21 am

Well after a long hiatus, a few surgeries and a couple other set backs I am back at it. I believe I am about a week away from getting my 520 fired up. I have 5 tons of rice coming late this morning and thought I'd share a few pictures of my coal bin.

As far as the plumbing goes I about have that finished and praying I have no leaks. I have all the controls sitting on my bench and hope to try and figure that part out this coming week but I a SURE I will have some questions on the wiring part. I feel like a kid on Christmas waiting to see what Santa put under the tree. The wife said I better get moving as we have no heat source right now and it's getting cooler. I will share some pictures of my set up soon.

Dave

McGiever · Post by **McGiever** » Sat. Oct. 22, 2016 11:04 am

Hi Dave,
I will offer my services to help expedite your boiler control wiring. You are not that far from me and I am willing to come help you along. Baden is one of my old stomp'ln grounds as being as I was raised in Beaver County before jump'in the line into Ohio.

Reply with a PM and phone number and we will talk and make this happen.

Pacowy · Post by **Pacowy** » Sat. Oct. 22, 2016 11:34 am

Dave,

Probably too late for this delivery, but to be most useful the "cover" over the bin feed pipe should be larger to make it easier to service the auger and pipe, and should have an opening at the end to permit obstructions to be removed from the end of the auger without having to go shoveling or diving in the bin. See http://cdn.efmheating.com/DF520-Installation.pdf at pages 2-3. Figure 5 on p13 of that doc shows recommended design and dimensions. No big deal to run it this way but you might consider reworking it some time when the bin is low.

Mike

coal stoker · Post by **coal stoker** » Sat. Oct. 22, 2016 1:44 pm

Dave,

Really great to see you back at it. Hope all is well health wise.
Your shed really looks great and nice coal bin. Your so close now keep going its getting cold.
Best of luck,
CS

waldo lemieux · Post by **waldo lemieux** » Sat. Oct. 22, 2016 2:09 pm

McGiever wrote:Hi Dave,
I will offer my services to help expedite your boiler control wiring. You are not that far from me and I am willing to come help you along. Baden is one of my old stomp'ln grounds as being as I was raised in Beaver County before jump'in the line into Ohio.

Reply with a PM and phone number and we will talk and make this happen.

And that right there boys and girls is what makes the world worth being in!!!

dave28 · Post by **dave28** » Sun. Oct. 23, 2016 6:51 am

McGiever, PM sent.

Mike, I appreciate the input. I may need to change a few things in that area next year. I just went with what I thought would work. I'll keep you posted on how things work out.

Chris, It is nice to be back. Healhwise I feel a lot better but still a bit sore inside yet. Hopefully I will be back to 100%. Thanks for the compliments on the shed. Getting excited to getting this thing fired up, plus its only 64° in the hosue this morning.

waldo lemieux, I could not have said it better my self.

Rebuild My EFM 520

Attachments

Attachments