Combi Boiler Piping Explained

[@harrycastro592]

Finally, someone took his priceless time to explain these themes in a simple language to an apprentice like me. It was really much appreciated

[@JerseyMikeHVAC]

You're welcome. Thanks.

[@carllinton]

Thank you Mike for simplifying how a combi boiler works.

[@trevorburgess2643]

Awesome video thank you so much! Two years in the trade mostly doing maintenance on oil and gas boilers. And this makes more sense to me than anything someone has tried to explain …🙏

[@brianmcdermott1718]

A very good example. Thank you Mike.👍👍👍👍👍👍👍👍👍.

[@JerseyMikeHVAC]

Very welcome

[@jakekostogiannis]

This guy did a great job. More people need to dumb it down like this for us guys tryna learn. If you explain it like your talking to an engineer people wil not retain the information. Boilers and hydronics usually go way over my head but this made it simpler to understand. 👍

[@JohnDoe-ej1lw]

Big thanks mike for explaining everything in a simple understandable way... ... love your channel 🤙

[@JerseyMikeHVAC]

I appreciate that!

[@imanabedini2897]

That's a comprehensive detailed description. Thank you👍

[@JerseyMikeHVAC]

You're welcome!

[@brandoncoffee8044]

Thanks Mike. This really helped me understand those close spaced Tee setups.

[@JerseyMikeHVAC]

Awesome. Glad it helped you out.

[@nicorizzo3607]

Awesome thank you!! Getting ready to hook up my system with raddiant heat in the concrete in my new garge . Found your video very helpful!! Never did this before!!

[@yidala6905]

Finally found someone that could explain things so my dumb head could understand

[@JerseyMikeHVAC]

Many times it's on the person teaching... "If you can't explain it simply, you don't know it well enough" ~ Albert Einstein

[@AWhite_]

You are great man. Really appreciated.

[@davek5529]

He did an excellent job of explaining how this system works. When you have time, would you be able to put a video together how a turndown boiler operates?

[@joepier5498]

Great video and concise explanation.

[@danherring5676]

Excellent! Thanks a lot for that. Really clears up a lot of specifics.

[@PatrickDeschamps]

Thank you so much. It finally explained this nonsense to mee.

[@alexandrostapantaola191]

Thank you so much learning a lot from you

[@sfischer9703]

Great explanation.. thank you

[@johnnybgoode5598]

Can you do some vids on troubleshooting combi's and heat only wall hungs? Not much on the net about them. Anything would help. Love ur vids. Very detailed and informative. Thanks for your work!

[@JerseyMikeHVAC]

I'll certainly try. Thanks!

[@eddieroman3629]

thanks im a diy and that was alot of info i learned

[@JerseyMikeHVAC]

Glad I could help

[@jdogar1]

Interesting Mike. thinking at its Finest...

[@BeeBombard]

100% awesome video

[@aaronhall4361]

Thank you so much!

[@JerseyMikeHVAC]

You're welcome!

[@jasonjokiel7188]

Thank you !!!

[@JosephSaeteros-r9j]

Hello i have a question i installed a navien combi boiler 3/4 baseboard but i main lines is 1/2 pex you think that's a problem

[@aaronhall4361]

Does it matter if the flow direction of the primary loop matches the flow direction of the secondary loop?

[@JerseyMikeHVAC]

Ideally you would want your heated supply water from the internal pump to inject into the main loop and flow away from the suction side of the internal pump. Going the other way will allow hot water injected into the main loop to be drawn directly back into the internal loop and you'll have shorter cycling of the burners on limit controls.

[@Jason-qe4tp]

Hey Mike, I need help with zone damper troubleshooting and conversion guns troubleshooting and repairs....If you could help me out, I would greatly appreciate it. You explain things great and I retain it easily. Thanks for that seriously

[@JerseyMikeHVAC]

Conversion guns?

[@Jason-qe4tp]

@JerseyMikeHVAC Riello and Carlin oil to gas conversion gun. And i saw video on zone dampers too, it helped me out too, but still need help on some of the older ones. Thanks for responding your the man!

[@AWhite_]

I live in NJ. Would you be able to help me with the paperwork if i diy the system.

[@eda8673]

Hi any idea how to bleed the baseboard radiators? I have a navien combi boiler

[@JerseyMikeHVAC]

Unless there is a manual valve piped in for it, I've sometimes resorted to bleeding out through relief valves. Only thing about that is sometimes these relief valves don't like to completely reseat.

[@brandoncoffee8044]

Is this method used only on larger homes with a lot of piping, or can it be used on smaller houses with very little piping as well??

[@JerseyMikeHVAC]

It's always on larger, multi-zone systems, but not exclusive to it. This design can be applied to any circumstance and often is, as the alternative requires very detailed design skills that are not so common.

[@mattkaramccarthy677]

@@JerseyMikeHVAC perfect answer right there. I know few contractors that could actually compute the correct pressure drops and pipe size for a direct flow system. Even explaining residual head for the internal pump is a struggle most days.

[@jdogar1]

i worked as a plant operator for about 10 years. I used to get thoughts like this while plant is running itself...

[@JerseyMikeHVAC]

Power plant? I used to run a coal fired supercritical and later a combined cycle. Impressive how these things work.

[@jdogar1]

@@JerseyMikeHVAC No at oilsands refinery. At fort mcmurray AB. Also i worked at Data Centres. Are you in from Canada or USA? Yes its is impressive...

[@JerseyMikeHVAC]

USA

[@John-771]

This isn't true. I've seen dumb plumbers hook these up without the primary loop and use the system circulator to push the water directly through the zones. The purpose of the primary loop is to mix the cold water coming in from a cold zone so it doesn't shock the boiler. If you have 2 zones and the 1st one calls the boiler will fire and get up to temp say about 180°f. If that zone is satisfied and the boiler is still at 180° and a cold zone calls the cold water not mixing and just coming directly into the boiler can cause damage. Personally I use low loss headers instead of closely spaced tee's.

[@omargarcia9083]

Thanks for your videos, you are the best.🫡🙏🏼

[@JerseyMikeHVAC]

Thank you too!

[@Talentman18]

Thank you!!!