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How do we get the manual/instructions for the manifold? We did not receive a manual. Please advise. This is what we received: ABST PEX Manifold,4-Branch Stainless Steel Floor Heat Manifold Kit with 1/2" Adapters Included for Hydronic Radiant Floor Heating. Thank you

Mike: Is there an outdoor sensor? You didn't go over that. Please can you include that?

I thought this unit had DHM on it, I don't see it ?, I thought this looked just like NFC-20/175H unit, it is not right ? ,

*Mike* Would you consider making an update to your radiant heating video? I also wouldn't mind seeing a video on your other HVAC services in your home, such as air conditioning. Thank you for producing this video.

Thank you Mike. I have been looking at my system off and on for years trying to understand it. Your video has helped. Thank you. Great video!

Right you added distilled water that’s great man awesome.

I’m sorry your primary loop pipe diameter is ok I thought it was 3/4”

Closely spaced tees are supposed to be a close together as possible. The calculation is 4 pipe diameters or a close together as possible. Also try to avoid or trust everything you read in the manuals.

Nice clean job but you may want to consider increasing the pipe size of your primary loop in future projects

Excellent Video. Thank you !!

Instead of distilled water how about collected cistern rain water

also videos on them pumps say not to have elbows to close on either side of the pumps

why is the air separator mounted so low it should be at the highest point in the system as air rises

I'm building a new log home and considering a radiant floor system using heat transfer plates and PEX in the floor joists. I'm considering running the PEX myself since its labor intensive but I'll need to hire a heating contractor to install the mechanicals. How much would you suggest it should cost me to have a heating contractor install the boiler and do all of the piping etc? I'm not sure what a reasonable price would be so I'm trying to avoid being over-charged. Thx.

Hack video. Leave it to the professionals. Gas pipe way over sized. Pressure in the system way to high....must be a 4 story building. You are constantly going to be building pressure. Never ever use black iron on the discharge of a pressure relief valve... rusts shut then you have created a bomb. Learn about the science behind closely spaced tees in a primary loop. Learn about the “point of no pressure change”...cold water feed,pump,expansion tank, and air separator not even located correctly. I’m sure the pumps are not properly sized.... I know this is merica put bigger is not better. I hope you realize that you a voided any warranty you thought you had on your Navian...they well never warranty a part on the thing because you are a hack. This video is definitely not a professional video as stated at Minute 26.54Hardware stores and “nights and weekends guys” are usually out the best to get advice from.Would never put my low water cut off in that position with that air vent. Moral of this video is to teach people to leave things to the professionals. I’m not a car guy...so I do t f*** with my car.

Need a shut off before the union on the gas side... everything else looks sweet.. im going to price those webstone manifolds.. i have npe-180a and can get the h2air kit to get space heating applications out of my tankless

How loud are the pumps? I am installing one in my home, and trying to decide the best location. The sound output will be a definite factor.

Does dramatically overkill sound familiar ? And did you ever have to replace a grundfoss pomp?

Nice job apart from the soldering.

looks like the air separator is in the wrong spot. looks like you piped it in the boiler loop.

Wow! Nice work. I'm getting ready to do this myself. I'm definitely seeking pro advice but there's plenty I can do to alleviate the pain in my wallet. I've purchased nearly everything from PEX universe so, good call there. So meticulous and neat! I only hope mine will look as presentable as yours. You just acquired a new subscriber.

I cannot imagine a more complicated system , over engineered for sure

Thank you for the great details.

I have to do this but not to spend that much . btw how much did you spend ?

Another small tip you may want to keep an eye on is that those “copper” clamps might not actually be copper, but just copper colored paint. I discovered this when I built a fountain using these clamps because different metals touching each other will be subject to galvanic action, and can actually cause pin holes in copper. If you can put a small piece of rubber between the pipe and the clamp, it should be okay. You do such great work, I’m sure you think those copper colored clamps should actually be real copper. As my copper clamps were exposed to water, might have expedited the corrosion and galvanic action

Would you also install a pre tank scale inhibitor?

I appreciate everything being so neat. Really important when trying to trace lines

Very well explained! 😊

By far the best video I have seen on radiant heating... I have a couple of questions... Maybe I missed it in the video but Where are you located? Are all your floors tile or do you have wood as well? Also, what has the lowest outdoor temperature been while you used this system and what did you need to raise you water and room temperature to? You mentioned its at 104 now because its not too cold outside. Thanks for your help.

Are you still happy with the Navien unit?

nice job buddy

Nice system. I don't see mixing valves. If you are heating concrete at one temp and staple up under your joists, that would be a different temp. Buffer tanks are being recommended now to prevent short cycles on the boiler. But a very good looking system.

When you talk about the spirovent and the reason why you keep it away from the tee.....that only will happen if you use a Air scoop and not a spirovent

for the love of god please remove the valve off the pressure relief valve this goes against all codes and safety laws and turns this system into a bomb if it was ever closed

Mike, got to love some of the comments. Just curious, what determines the size of the zones? Is it the pumps?

Could you please give us an update on the efficiency and durability of this system you installed?

I'm in the process of building one of these systems myself and have a question. I have a similar manifold with the air eliminator and hose hookups for purging/filling on it. It seems like most people still put in separate purge/fill hose barbs and air eliminators above the expansion tank even though the manifold has these built in, as you did here. Why is that? Are the manifold components not adequate?

Did you consider running glycol in the system? If so, why did you decide against it?

This system is grossly over engineered.

Thank you for lots of great info. Looking to do this in my next home. One question I have, would it not be required to have a non-combustible material behind the heating unit?

What a fantastic video! You did a great job explaining things and I sure appreciate that you made it for us to use to learn whatever we can from it. Beautiful job. What a great layout on your system. I can see you are one sharp guy and care about what you do. Very professional. Thank you for sharing it and helping us.

Always put a shut off valve between a gauge and the system.

Great video!

thanks for making this video. I searched and found exactly what i was looking for! The clothes thing, YES!

Is that a shut off I see on the pressure relief piping??? Thats a huge no no!!!

nice Work, Thanks for making that video. I am about to take on the same project myself .

Cool video but dude, you have a shutoff valve after the relief?? Super dangerous if someone were to close it and obviously defeats the purpose of over pressure protection.

Hey Mike, I'm trying to do a cost analysis of a system like this. Roughly how much did your entire project cost you?

could you run the cables in the wall, then use connectors after you'd plastered it? would look a little better

why is it that plumbers have the right to spew their pipes all over the wall like someone vomited on it? Us in electrical engineering have to use a cabinet and everything has to be nice and tidy. This rule doesn't seem to apply to the plumber guys.