What can I do better next time? (pics!)

ratio

I'm done with the piping on a snowmelt/carwarsh heating system. Please take a look at the pics & tell me what I could've done in a better way. The manifold is crooked, I didn't realize when I was landing the ¾ PEX that it was moving. I'm not yet sure how I'm going to fix it. Bringing the PEX up underneath the boiler wasn't my idea either, but I think that part turned out ok in the end.

STEVEusaPA

It looks fine. Question, why not put the manifold over to the right, above where the pex comes out of the concrete? And move the boiler to the left a little.
I’m not a fan of expansion tanks piped that way, but I like the hydro claws.

ratio

Boiler was already mounted when I got there. I didn't run the PEX, but I also didn't tell them it was a bad idea to bring it up underneath the boiler, so that's my bad.

EdTheHeaterMan

I agree with @STEVEusaPA Looks good, but the expansion tank labels are not placed on them upsidedown. So if the label is upsidedown, the tank is upsidedown. They are strategically positioned out of view in your Photo. Not a big deal, but the tanks will last longer installed properly. like 8 years instead of 10 years ...not a big deal.

Zman

If the boiler can handle the glycol, you can eliminate the hx altogether. I have never heard that the exp tank installed that way is an issue, how can that cause premature failure? I prefer not to install them directly under the air sep as they end up with all the debris on the bladder.

EdTheHeaterMan

The diaphragm in the tank is designed to hold the weight of the water, based on the orientation of that weight. By reversing the angle of the weight on the seam where the diaphragm meets the tank, the stress is not at the optimal angle. Or maybe all the manufacturers of these tanks just don't know which end is up. I could be wrong. I only read the instructions on that part once, over 35 years ago, and followed that procedure the rest of the time I was installing them. The instructions may have changed since then.

But, I don't care anymore. I'm retired.

Respectfully Submitted
Mr. Ed

EdTheHeaterMan

Follow-up
It might have been in a seminar offered thru the supply house I was buying from. I do remember something like that, but it was long ago and it does not matter anymore because, if it is true then we all sell more tanks if we install them that way. If not then we all sell the same amount of replacement tanks. Either way, it's not going to fail until after the warranty has expired.

I just have this thing about making my jobs last longer and doing the best job I can for my customers. If you don't know what you don't know, then you can't do the best you can. My advice, to the youngin's: NEVER STOP LEARNING!

Zman

I honestly don't know for sure either. It seems to me that all floor tanks would be upside down if that was the case.

ratio

I mounted the tanks like that because there wasn't space to mount them under the Spirovents, and it would be even more piping to put them right side up. It seems like they'd be even more stressed when they're being used as a storage chamber for dirt collectors. I put a dirt leg under there, but the more I think about it the more I think that was unnecessary. It also rendered one of the valves on that nice Webstone assy redundantly duplicated.