Another efm 520 family member

 
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Rob R.
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Post by Rob R. » Sat. Sep. 19, 2020 8:52 pm

I don't think it makes any difference.


 
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coalkirk
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Post by coalkirk » Sun. Sep. 20, 2020 8:35 am

I bought a foil faced insulation kit for a water heater at the big orange store. It worked fine and fits under the covers.

 
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Canaan coal man
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Post by Canaan coal man » Mon. Sep. 21, 2020 5:00 am

Ok thank you all for the info.
Hopefully I’ll have a rainy weekend within the next few weeks to install the insulation.
I’m wondering how much it will save me on coal. Hopefully a few hundred lbs.

 
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coalkirk
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Post by coalkirk » Mon. Sep. 21, 2020 5:48 am

For me it wasn't about saving coal as the boiler is in my basement. Heat "loss" in the basement isn't a loss in my mind. It was about lowering the temperature in my boiler room and in the family room directly above the boiler room.

 
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Canaan coal man
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Post by Canaan coal man » Fri. Oct. 16, 2020 7:42 am

We are getting close to lighting the boiler for the season up here in northwest CT.
The Glenwood #6 is keeping fall at bay in the mean time.

One project I want to get done in the next few weeks is plumbing in the domestic hot water coil to my electric hot water tank.

I plan to divert cold incoming water from pressure tank to coil then back out to the cold side of the hot water tank.
I’ll need to add Clean out Ts with garden hose thread Somewhere in the circuit to clean the dhw coil once a year.
After the hot water tank I’ll need to add a mix valve.
Am I missing anything?

Do you guys think I should dump into hot water tank or run the boiler coil right to house?.

If I use the tank and leave it on it will help with any time the boiler can’t keep up.
while I feel plumbing will be simpler if I feed the House dhw directly From the boiler. I’ll have to turn ehw heater off and drain it so there is no bacteria growth. Witch isn’t a problem and forces me to clean the tank once a year of sediment, but I like The idea of having the extra insurance of 50gals if water on hand if needed?

What do you guys think?

 
Holdencoal
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Post by Holdencoal » Fri. Oct. 16, 2020 8:19 am

Canaan coal man wrote:
Tue. Feb. 11, 2020 6:43 pm
Ya
C, the off gassing of oil is a common issue with larger boilers. The easiest way to eliminate this is with pre and post purge control and a solenoid valve.

https://www.beckettcorp.com/support/tech-bulletin ... re-useful/

https://www.beckettcorp.com/wp-content/uploads/61 ... -Sheet.pdf

 
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Rob R.
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Post by Rob R. » Mon. Oct. 19, 2020 8:21 am

Canaan coal man wrote:
Fri. Oct. 16, 2020 7:42 am
One project I want to get done in the next few weeks is plumbing in the domestic hot water coil to my electric hot water tank.

I plan to divert cold incoming water from pressure tank to coil then back out to the cold side of the hot water tank.
I’ll need to add Clean out Ts with garden hose thread Somewhere in the circuit to clean the dhw coil once a year.
After the hot water tank I’ll need to add a mix valve.
Am I missing anything?

Do you guys think I should dump into hot water tank or run the boiler coil right to house?.

If I use the tank and leave it on it will help with any time the boiler can’t keep up.
while I feel plumbing will be simpler if I feed the House dhw directly From the boiler. I’ll have to turn ehw heater off and drain it so there is no bacteria growth. Witch isn’t a problem and forces me to clean the tank once a year of sediment, but I like The idea of having the extra insurance of 50gals if water on hand if needed?

What do you guys think?
There are many people that are happy with the real-time DHW production of an EFM 520 and the tankless coil. Piping the system so you can use the coil by itself gives you flexibility. As you pointed out, the EWH should be drained once per year anyway - and in the event you need to change an element or the tank springs a leak, being able to run the EFM by itself would be nice. The opposite is true also, it is great to have a EWH to use while you service the EFM.

You are correct that the EWH will give you extra capacity - but unless you want to fill a big tub quickly (or do something else that needs a high flow rate of hot water), the extra 50 gallons likely isn't needed.


 
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Canaan coal man
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Post by Canaan coal man » Mon. Oct. 19, 2020 11:38 am

Thank you Rob.
I guess it’s dose not matter which route I take As far as service goes.
There are multiple times where one of us is taking the shower. The laundry is running and hot water is being drawn from sink in the kitchen for washing dishes.

I’m leaning to having the tankless coil plumed into the cold side of ehw
Based on usage. And usage will only
Go up as the boys Grow.

 
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Rob R.
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Post by Rob R. » Mon. Oct. 19, 2020 12:03 pm

There are pros and cons to each approach.

One downside to having the coil piped in series with the EWH is that all of the hot water flow has to go through the coil, which is only 1/2" copper. If using multiple fixtures like you described, the coil may be restrictive. If your house is piped in 1/2" copper already, you won't notice.

 
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Canaan coal man
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Post by Canaan coal man » Thu. Dec. 17, 2020 6:21 pm

I’m a little late to the party but hello 20-21 heating season.
fired the boiler Thanksgiving weekend it’s been running Great the last few weeks.
Today we finally got the domestic hot water coil hooked up so far it’s running great finally won’t be paying the electric man for a hot shower anymore at least for six months out of the year. We’re running Coldwell water into the coil out the coil into a mixing valve then the mixing valve goes into the cold side of the hot water tank leaving the hot water tank on but it’s pretty much a straightforward simple install it will be interesting to see what the electric bill goes down for the month of January.

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swyman
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Post by swyman » Thu. Dec. 17, 2020 6:48 pm

Nice work, I love copper!

 
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Canaan coal man
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Post by Canaan coal man » Thu. Dec. 17, 2020 7:32 pm

Thank you all though I can’t take credit for the insulation, it still came out clean...
I had the same outfit who plumbed and wired the boiler to the dhw.

 
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Post by StokerDon » Thu. Dec. 17, 2020 7:40 pm

Canaan coal man wrote:
Thu. Dec. 17, 2020 7:32 pm
Thank you all though I can’t take credit for the insulation, it still came out clean...
I had the same outfit who plumbed and wired the boiler to the dhw.
WOW! That is some nice looking Copper work!

You will love the coal fired hot water. In Winter, my electric bill drops to just about nothing because of the coal fired radiant heat and the coal fired hot water. Most people's electric bills go up in Winter. :yes:

-Don

 
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Rob R.
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Post by Rob R. » Thu. Dec. 17, 2020 8:28 pm

StokerDon wrote:
Thu. Dec. 17, 2020 7:40 pm
WOW! That is some nice looking Copper work!
It sure is. Pro-press fittings are very expensive for DIY work, but if you are hiring out the work the labor savings pays for the fittings.

 
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Canaan coal man
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Post by Canaan coal man » Sun. Mar. 21, 2021 6:32 am

image.jpg
.JPG | 751.5KB | image.jpg
It’s been a while since I have been on here. I have to say up until this morning this Efm has been running like a Swiss watch.
I did have a question. It appears the
love-joy Set screw on the gear box side loosened up.
I aligned the bushing so the set screw so it was over the key way and re tightened it.

I currently have it running again so the house can finish it’s heat call. Once that’s done I’m gonna take it apart and slide the gear box back to inspect the damage on the shaft.

My question dose the new style love-joy use a key in the shaft on the gear box side? Or dose Efm want to use the set screw as a key?
Last edited by Canaan coal man on Sun. Mar. 21, 2021 6:37 am, edited 1 time in total.


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