Removing tankless coil from boiler and replacing with blank cover plate

[@arjunaugarow]

Thank you for making this video. I’m planning to replace my coil with a new one. This was super helpful.

[@mattmarkowicz]

My hero. I was too afraid to do this for 3 years. Now I'm going in

[@cavy95]

How did it go?

[@mattmarkowicz]

I did it. Now have oil heat for back-up and an electric water heat for the house hot water!@@cavy95

[@richardcurtis2688]

I'm doing this same thing on the same boiler this summer. I'm glad I found a video just to see what I'm up against. I know the bolts will be the hard part and I just wanted to see how it would go. Seems pretty straight forward. I stopped using my coil years ago, but have a small leak so I need to do the plate. I have lots of experience with broken bolts, but hoping I don't need it lol. Nice vid

[@arpit2131]

What is the coil used for? removal will change any performance?

[@FlukeTog]

Thank you so much !! I’m so tired of burnt out service guys in a hurry slapping a part in cursing and running every other visit. Nice but it’s never fixed. This helped me out. Thanks a lot ! Grateful for this.

[@FcDominick]

When you originally disconnected the tankless did you have to make any adjustments to the aquastat?

[@jesusc1573]

Great video and hopefully helps me as I have to do the same next week on my boiler. Question where did you order the cover plate from? Recommend the site or provide a link please

[@idothings6605]

I ordered mine from www.supplyhouse.com/Peerless-99812-X1034-Tankless-Cover-Plate-w-Gasket-Hardware-for-EC-ECT-Boilers. Good luck & thanks for watching!

[@pablosales187]

Woow when did you leave the coil? You just installed the new plate. Didn't you need the coil?

[@Orange-Jumpsuit-Time]

It's amazing how people never heard of using a propane torch to heat difficult to remove bolts. P.S. I replaced my flange gasket 2 years ago.

[@Samlol23_drrich]

Heats not good for a boiler.

[@Orange-Jumpsuit-Time]

@@Samlol23_drrich Right, who ever heard of a boiler heating up.🤣😂

[@CCROSS5882]

Amazing , you look just like Trump!

[@Rein_Ciarfella]

I'm guessing he didn't do that because the boiler was still too hot to touch (so already hot), plus if you used a torch you still couldn't shock it or you might crack the iron of the boiler itself since the screws go into that. I probably would have shot it with penetrant in both directions myself, and maybe something besides PBlaster, which although it says it's a lubricant is more of a volatile. Did you actually use a torch on yours?

[@tpeas2452]

Do you still use the boiler for baseboard heat? How did you stop using the coil - converted to water heater, etc?

[@idothings6605]

Yes, I still use the baseboard forced hot water for heat. I simply disconnected the domestic hot water coil from the boiler to stop using it as a heat source for my domestic hot water & shut the boiler off during non-heating months.

[@glenncyrus9457]

Is it good to use Anti Seize on the threads?

[@angelone211]

Just broke the acuastart well sensor can I weld it back..

[@TheMeme57]

Great video and patience!! I have a Weil McLean 668v (28 years old) and my round cover plate shows corrosion on the outside, though I have never actually observed water leaking from it. (It is just the cover, I do not have a tankless coil as I get my domestic hot water from an indirect tank). Would you proactively change out your cover plate during to visible corrosion without any active leaking? The benefit I see is to change out the plate before the bolts become too corroded and snap. The risk is that I snap the bolts in the process when my boiler was working perfectly fine! I haven’t done this work before so I would greatly appreciate your input! Thanks!!

[@idothings6605]

It's hard to tell if it's leaking or not due to the water evaporating so fast as it leaks out due to the temperature of the boiler...

[@fdalefd]

So when I got my new hot water tank I wanted to just disconnect the coil electronically because it was causing my burner to come on, I guess when it would cool off. Seemed like I was wasting oil. But when I turned my heart on for the season the burner came on, called for heat but for some reason it would not call to turn the oil gun off and kept running till the relief valve opened and we had a small flood. What am I missing?

[@ryan01832]

Great video! My question is he pulled a huge coil out, but on replacing cover - there was no coil going back in? Can someone explain that to me?

[@idothings6605]

Correct. There's no coil going back in the boiler because I no longer get my domestic hot water from the boiler which is why one is not needed.

[@MrIzzypro11]

Hi great video and well explained! I just installed a hybrid hot water heater, I love it. My plumber turned off the water going in and out of the boiler, he did nothing with the coil. What was he supposed to do? Ty

[@idothings6605]

If you're still using the boiler it needs access to water. Perhaps he just turned off the water to the domestic coil?

[@TheLousot69]

Nice job planning on doing this in the summer months how do you keep the boiler from turning on to make hot water do I need to do anything to the aquastat

[@idothings6605]

I just turned the Lo setting way down ( to around 130 degrees Fahrenheit) and then during the warmer months I shut the boiler burner power supply off to save on fuel consumption. You could also install a different Aquastat that doesn't have a Lo setting. Thank you!

[@Orange-Jumpsuit-Time]

Luis, all boilers have a main Off switch, try it, you have my personal guarantee the boiler won't make hot water.

[@dreamer6508]

There is a white wire in the aqua stat remove it from the circuit board and that’s it but cover the end of the wire, it took me a lot of research to find this information when I did mine

[@albertl6963]

Can coil be left in without using?

[@DharamSookram]

Can you show hpw you re-routed the pipes to your new DWH tank? I need to do this because my oil bill is killing me but im not sure how to reroute it properly without affecting the heating system for the house.

[@cavy95]

I put my Hybrid water heater next to my oil boiler and ran a copper water line into my new water heater. I had to run New Romex from the breaker board for electricity with its own breaker. Now my water is heated with a heat pump, which uses little electricity. Yes, my oil bill was killing me. I don’t know how the elderly lady that sold me the house was affording it.

[@chrisE815]

So once the aquastat is removed, there is no input to the controls therefore no need to work about removing/disconnecting any control wiring?

[@chrisE815]

Basically my question is if I want to stop using the coil but still use the boiler for heating, what steps should I take?

[@idothings6605]

@@chrisE815 If you have a triple Aquastat (like I do) you could turn to LO setting down as low as it can go, that's what I did on mine. Alternatively , you could buy a different Aquastat made to run boilers without a LO setting.

[@Ciocebaseball]

Hi I have slant fin blueray thermodynamic III Boiler. If I use separate indirect hot water tank can I close both water lines going into coil?

[@idothings6605]

I wouldn't close them off by putting a cap on them because pressure could build up. However, you should be fine just cutting both ends and leaving them uncapped.

[@HB-yq8gy]

My did you stop using the furnace for hot water? We have the same type of oil furnace with a coil due to the high oil cost is shutting of an oil furnace a good idea? We only started doing it this Spring in warmer weather. Otherwise, always burning oil to keep the coil hot for hot water?

[@idothings6605]

I stopped using the boiler for domestic hot water due to high operating costs. Some older boilers that have always been 'hot' may leak when you shut them off - mine did not leak.

[@Obelix516]

I see that coil is completely covered in soot. Is it because it is being exposed directly to the flame? If that's the case, the home heating part of the boiler needs not be drained?

[@idothings6605]

The outside of the coil was touching the boiler water & that water is likely dirty and corroded the copper over many years. The copper pipe never touches the flame.

[@baccoop3255]

What was the torque spec on the cover bolts plate .

[@idothings6605]

I believe I did 25 ft-lbs., but I'm not certain. Thanks for watching!

[@Rein_Ciarfella]

That was going to be my question as well! I was going to guess, just by the length of torque wrench and the force he was using, around 25-35 ftlbs. I wonder if there's a spec for that which comes with the new boiler for the installer.

[@AnthonyCelata]

Hey where did you buy this plat? Mine just sprung a leak I see the part number but cant seem to find it.

[@idothings6605]

www.supplyhouse.com/Peerless-99812-X1034-Tankless-Cover-Plate-w-Gasket-Hardware-for-EC-ECT-Boilers

[@hjets5387]

Where did you get the cover?

[@georgegerhard7126]

did you need to reinstall that aquastat since your hot water comes from another source?

[@idothings6605]

Yes, I re-installed the Aquastat. I used the same Aquastat (LB8124) that I used before removing the coil, I just turned the Lo setting way down and then during the warmer months I shut the boiler power supply off to save on fuel. Thanks!

[@Orange-Jumpsuit-Time]

Sure George, just take out that aquastat and fire up that boiler, see how high you can get that temp, but first put a catch pail under the relief valve.

[@markalvarez6939]

@@Orange-Jumpsuit-Time dont be wise guy he didnt know

[@MattPado]

Do you have to make any adjustments to the electrical? Since you went to tankless electric. Does the boiler know now that it is never going to call for hot water again? Outside of your radiators.

[@idothings6605]

I just turned the LO setting down lower to save on oil.

[@vrnicastro6353]

My coil started leaking. Switching to a hybrid hot water heater. My concern is the electrical connection. Since there is no water in the coil it will sense a low temp and turn on. Did you turn off the sensor? Mine is a Weil McLain.

[@idothings6605]

Mine didn't have any sensor that senses the domestic hot water temperature, it just senses the water in the boiler temperature, which I believe is how most operate. I did turn the LO setting on the triple Aquastat down.

[@cavy95]

I was thinking about getting rid of the on demand oil hot water and installing a hybrid electric water heater. Could you show how you disconnected the water lines and what you replaced it with?

[@idothings6605]

Yes, I have been meaning to make a video showing this and also comparing the cost of operating the hybrid hot water tank versus the tankless coil.

[@stephensobierajski7110]

@@idothings6605 yes, please. I'm doing the same thing I a few weeks. Awesome video. Thanks for posting.

[@cowymccowface6332]

Hey man good job. When you stopped using the tankless system did you just leave the coil disconnected but in place for a while?

[@idothings6605]

Thank you! Yes, I left the old coil disconnected in place for several months I just cut the copper pipes off the tankless and used it like that for several months, the only reason I switched to the blank cover plate was because the old gasket had a slow leak.

[@cowymccowface6332]

@@idothings6605 ohh ok thanks man, I'm doing the exact same thing right now

[@rlogan2261]

Great job what did u do with the aquastat controller did u disable the lo limit? Im also looking to disable the coil and go to electric hot water tank

[@cavy95]

Put in a hybrid, heat pump from Rheem or ao smith.

[@or7631]

I got a Q...so removing the coil and replacing it with new plate doesnt effect the heating of the house correct? the COIL only provide hot water to the pipes where it supplies the particular place of the house? Not sure if I take my coil and just do what I saw here will work for me

[@or7631]

also I have a Weil Mclain boiler SOG Series 3

[@jamesjetson3812]

This reply is a year late, but that coil heats the house water. Thats a tankless system (they are trash), he went to a tank system for more available hot water. The heat for the radiators to heat the home are separate from this. So no, removing this coil has no effect on the heating of the home.

[@ClemZiroli]

I have pretty much the same boiler and was planning on doing this same job on Saturday. It seems pretty straight forward but you left out the part about draining the boiler which is what I am a little uncertain about. Any advice?

[@jamesjetson3812]

Im not a plumber, but if his supply to domestic hot water is properly shut off. He probably doesn’t need to drain the boiler.

[@Kuhlyedascope69]

hey man I subbed hopefully you can kinda answer this I dont know much about this besides reading/watching - I got a hot water heater installed couple years ago then had my boiler clean by a company then it started to slow leak the face plate is pretty bad is has a tiny leak nothing crazy by the top nut. Could I have someone remove the coil like you did and just replace the gasket? do I need it for my heating? not exactly sure If im providing the right info. thanks man

[@idothings6605]

Hi & thanks for subscribing! It sounds like you might have a leak from the gasket if it’s leaking around the gasket area. If that’s the case you could have someone just replace the gasket. You might need your coil to provide your domestic hot water. Without seeing it I can’t say for sure. Try contacting the company that cleaned it and have them look at it. Good luck!

[@Kuhlyedascope69]

@@idothings6605 ok. my hot water is all ran thru the indirect water heater if thats what it is. Was the coil supposed to be drained or something I dont get where the water is coming from the pipes are all clipped off from it when it was installed

[@idothings6605]

@@Kuhlyedascope69 I would need to see exactly where the water is coming from. It's possible it's leaking from either the gasket, or your old domestic coil that's been capped off has a hole in it.

[@federicovilche5185]

Hey I have a question. I just bought a house and it has a Utica Oil Boiler sfh3100wt that is leaking from the coil gasket. Can I do what you did and just remove the coil and put a new plate or do I have to replace just the gasket. The boiler is fairly new and I'm trying to do it myself to save me some extra bucks. Thanks in advance.

[@idothings6605]

If you are still going to use the domestic coil in the boiler you should just replace the gasket (do not remove the coil), just be aware that the bolts holding the coil in the boiler could break.

[@Mobil351]

Why did remove the tankless coil and replace it with a blank?

[@idothings6605]

The old gasket was leaking and I was no longer toying the coil for my domestic hot water.

[@johnsmith-sw7ii]

Did you change to a different type of domestic hot water system? If so why do you need the aqua stat reinstalled?

[@idothings6605]

Yes, I switched to hybrid hot water heater (heat pump). Yes, you still need an aquastat even without the domestic coil however, you could switch to a dual aquastat instead of the triple if you so choose. I kept the triple because it’s an old boiler and I want it to stay at a minimum temperature during the heating season. Thanks for watching!

[@davidknibbs9646]

Why did you empty the whole boiler for. Are you working on the heater coil

[@idothings6605]

Yes, I removed the heater coil. I drained the boiler so water wouldn’t leak everywhere during the removal process. Thanks for watching!

[@imxploring]

Very nice job and great video of the project! Well done! Thanks for posting!

[@arpit2131]

I have a leaking plate as well, I just wanted to know whats the purpose of the coil and will the performance change after just putting blank??

[@idothings6605]

The coil is for your domestic hot water. If you are using your boiler to heat your hot water you will need to keep a coil in the boiler.

[@bertpainter8385]

@@idothings6605 I just shut off my furnace for now from supplying domestic hot water, because I installed a Hybrid water heater to save money on filling my oil tank, especially during the warm weather. I spent 1100 to fill the damn tank and it's always lasted 6 months and then I had to fill it up again in the warm weather and just used for domestic hot water. (What a wasted of money when hybrid water heater will cost me around 100 maybe a bit more to heat up water during that warm season.) Made sense for me to spend more money on a super efficient water heater and not use any oil for half the year. That's 1100 plus 3/4 of what a basic water heater to heat the water would cost me. Anyway, for now I have the furnace shut off, but will need to disconnect the coil operation before I turn it back on for the cold weather. I was told pressure builds up if the Aquastat calls for the high to close and low to open or vice versa when it needs to heat the water up in the boiler for domestic hot water. And to shut off the ball valve supplying water to the coil. But they weren't sure what needed to be done to bypass the operation of the Aquastat which has a few function as the brains of the furnace. It calls for the boiler to heat up the water for heating the house and moving the circulator pump and for the domestic hot water, since the Aquastats used for domestic hot water are triple functioning device. I thought about switching the Aquastat to a Honeywell 8148A which is only used for heating the home. But still not clear on the right way. It seems you mentioned your furnace wasn't running as good after you cut the pipes and stopped using the coil for a while. My question is does anyone know how to properly disconnect the coil with or with out removing it and being certain the Aquastat is working as it should and not causing other problems after eliminating the coil function for domestic hot water? One video I watched mentioned to lower the low setting on the Aquastat to 130 to keep the furnace from turning on for domestic hot water. He also had cut the pipes and shut down the coil. That made some sense to me, but I'm no expert. From what I tried to learn is that the low setting of a Triple Aquastat (in my case a Honeywell L8124A) keeps the water temp low enough for domestic hot water with a mixing valve. And I guess keeping it low enough doesn't use as much oil in the colder months if your not using a furnace to get your drinking water and showers and wash etc with the coil.

[@MMAGUY13]

I changed my expansion tank I changed my filer I’m gonna try the coil next because I keep getting too much pressure and making my boiler spit out hot water to relieve the pressure wish me luck thank you for your video. I read online if it built up too much pressure it’s either the expansion tank filler or coil so I’ll try the coil next what do you think buddy

[@idothings6605]

Good luck, how do you know you’re getting too much pressure?

[@MMAGUY13]

@@idothings6605 The boiler is constantly throwing water into a bucket and the pressure gauge is on the red I think that’s the only thing it could be left is a bad coil

[@idothings6605]

Is there a shut-off valve to the supply side of the coil you could shut off to test your theory?

[@MMAGUY13]

@@idothings6605 I shut off the water supply to where I think it goes into the coil and the pressure still remains high does that tell you anything

[@Neighbor.From.Hell_88]

Can you tell me where you found your new gasket and cover?

[@idothings6605]

Supplyhouse.com Here’s the link to the part I purchased - www.supplyhouse.com/Peerless-99812-X1034-Tankless-Cover-Plate-w-Gasket-Hardware-for-EC-ECT-Boilers Thanks for watching!

[@stephenzies8867]

Would Be Smart To Put Grade 8 Bolts While You Have It Apart So The Never Snap

[@tomrufo3103]

The grade of the bolt isn't the issue. Grade 8 rusts just the same as grade 5. I might recommend zinc flake coated fasteners.

[@user-cj2vu4jn7v]

What was the torque spec for the bolts?

[@idothings6605]

I believe I did 25 ft-lbs., but I'm not certain. Thanks for watching!

[@oilburner9989]

You could have just left the old coil in place if you were switching to a different heating source for your domestic water. You'd have had the same result with no work at all. What was the point of removing it?

[@idothings6605]

The old gasket was leaking.

[@oilburner9989]

@@idothings6605 Oh okay. I must have missed that part somehow. I thought the coil was leaking internally. Good job then!

[@egold1006]

30 years ago I disconnected the water supply to my taco hot water coil. I did not need to remove it due to the use of steam. Simply put caps at the inlet and outlet. I doubt I could ever work those bolts out.

[@Skoot61]

- Since you removed the tankless water coil from the boiler and covered the opening with just a plate where and how are you getting your hot water from?

[@idothings6605]

I installed a heat pump water heater (hybrid hot water tank) to save on oil costs. So far it's been great.

[@andreaechevarria6725]

@@idothings6605 What kind of hybrid wh and did you diy the install? Nice video. I liked the combustion chamber vid.

[@idothings6605]

@@andreaechevarria6725 I installed a Rheem 50 gal (www.homedepot.com/p/Rheem-Performance-Platinum-50-Gal-10-Year-Hybrid-High-Efficiency-Smart-Tank-Electric-Water-Heater-XE50T10H45U0/312742081). I did do the install myself, so far the tank has been great and I would highly recommend it. My state has a instant rebate on these heat pump water tanks ($850) so the cost of the tank was only $250 for me, which is a major reason I did the conversion. Thanks!

[@CCROSS5882]

couldn't you just cap off the copper pipes coming out of the coil and be done with it?

[@slipperyjohnson7016]

Yup.

[@idothings6605]

You could cut them, but I wouldn't cap them. My boiler was leaking from around the gasket, which is why I replaced it with the plate.

[@superdutyscaler6823]

Why remove the coil?

[@idothings6605]

It was leaking around the gasket. Thanks for watching!

[@ranger178]

if the coil is still good why not just put a new gasket on flange for leak and put it back in then use the coil as a preheater for water going into new water heater? even in summer it will warm cold water from street up to room temp

[@idothings6605]

Great idea! I didn’t do that because I didn’t want the coil to condensate inside the boiler. Thanks for watching!

[@ranger178]

@@idothings6605 the boiler is full of water and so is the coil how would it condensate?

[@caddiewompis]

Hope you put anti seize on those bolts they are Way to tight it’s system hardly has any pressure on it. Makes a disaster for the next guy around

[@Rein_Ciarfella]

Yes, he did. He only showed applying anti-seize to one screw, but I assume he did the rest.

[@garagekeys]

If they snapped off while you were taking them out you would have had a project anyway because you couldn't leave them out your coil would have started leaking all over the place

[@metspride21]

If this happens you drill them and thread it

[@sparky3869]

This is the same boiler that you replaced the aquastate

[@idothings6605]

Yes it is!

[@Noelrod1975]

It’s don’t damage the boiler By removing the coil

[@idothings6605]

Correct!

[@dang3311]

Why wouldn't anyone just pull that wire that controls the low limit

[@negrilsand]

nice

[@lucillecampanale8542]

He never put the new coil in