Constructive thoughts please.

moberg

I'm getting conflicting answers wether or not this is piped properly. It seems to be working just fine. It is a three zone system, with pumps on the feed.

Jamie Hall

Can't really tell -- but

If it's working just fine... I am fond of saying "if it ain't broke, don't fix it".

STEVEusaPA

If it ain't broke, you can't fix it
What conflicting answers are you getting? If it's suppose to be p/s, maybe you're t's are too far apart.
Is the main primary loop sized big enough for maximum btu's needed?

BBros

Looks to me like you have returns piped in upstream of the supply for 2 out of the three. That would mean the pump (zone) on the left of the photo would have quite cool water if both of the other zones were calling. The middle zone would be affected similarly to a lesser degree. Perhaps that's what others are worried about.

I'm not a pro though, so hopefully someone else will chime in.

Zman

That setup will probably work just fine. Pretty sure you won't find it in the manual.
I have never understood why you would set it up so that each zone gets cooler water than the one before.
Chances are the main loop is moving so fast it won't matter.

njtommy

It's not wrong, but as stated above you could get cooler water going into the supply's piped like that. I probably wouldn't of piped it like that due to the extra copper cost, but I'm sure you will be fine.

Sometimes it's hard to stand there and visualize how to pipe something from scratch and then make a decision and stick with a design.

delta T

It will work, really not quite best practice, though I won't go so far as to say its wrong. The problem is as others have outlined, you have cooler and cooler water successively feeding each zone. Doubt it will be an issue. They tied the feed water in at an odd place, but that won't really cause an issue, you have valves in all the right places to easily purge out any air.

Can't fault the workmanship at all, looks sharp!

GW

Those pumps are on the return? I tend to push the water than pull it.

The "one zone feeds the next" is only bad if the zones are indeed the same design or temp requirements. If its bb first then a few panel rads then some floor heating, it's brilliant piping design

hot_rod

I assume there is a primary pump inside the boiler?

Pumping into a P/S loop is not the best practice. Without knowing the pressure drop in those secondary, it is hard to predict the ∆P.

What temperature does the system run?
High temperature and low pressure could coax some cavitation.

Pumping Away never forget that concept

GW

The condensate drain is a bit rough

moberg

Thanks guys. There is an internal pump on Primary loop. My secondary pumps are on the feed. Also the loop is 11/4. Thank you for your feed back. Greatly appreciated. If I pipe another one I'll do things a little different.

njtommy

@moberg just google wall mount boilers and click images. There's a ton of pictures on line to give you ideas.

lchmb

Did one that way once. Customer who is very fussy has never complained...we all learn as we go...:)

Gordy

The idronics package is very educational.

hot_rod

Consider a hydroseperator on the next one. It cleans up the piping and performs 4 functions.