Is this ready for welding ?

joseluisheating

Good evening guys,

How do the pictures below look? Is everything correctly shaped and positioned? Am I missing anything, or does everything look fine for welding?

Thanks for any help.

Mad Dog_2

You'll be soldering those joints, not welding. Is everything fluxed? Looks nice & neat. Are you following a diagram? Mad Dog

SuperTech

Welding? I really hope you are not seriously considering trying to weld copper tubing.

AndythePlumber

he must mean soldering. Maybe English is a second language? If it’s fluxed and cleaned. You’re ready for sweaty. The piping is arranged properly for a single zone radiant heat set up. The boiler is hydraulically separated from the secondary loop. “Which is nice”-B. Murray

Mad Dog_2

No worries...Its not just a "language" misnomer. People not in the trade often call soldering, welding. Mad Dog

SuperTech

I see a lot of guys referring to brazing as welding. It seems to be more common down south.

joseluisheating

Thanks so much for your responses, @Mad Dog_2, @SuperTech, and @AndythePlumber.

As mentioned earlier, I plan to solder, not weld. In Spanish, we use just one word for both processes, so I didn’t realize they were different until now. I’ve learned that soldering involves a torch, solder wire, and flux, while welding is a separate metalworking process. Apologies for the confusion—I was definitely referring to soldering.

The comments above suggest that everything looks good and nothing is missing, but I just want to double-check one thing. Is the pump in the correct position? I’ve heard that it only functions properly if the shaft is positioned a certain way. Can someone confirm this before I proceed with soldering?

Thanks again for the collaboration—I really appreciate your help!

hot_rod

If you cut that tube with a tubing cutter, you want to ream the burrs out. A pic below of what that burr can do to flow stream.

The closely spaced tees are on the bottom run? Flow is clockwise?

It's a combi boiler and you used the tankless ball iso valves to connect? That's fine and gives you a good purge point for the boiler loop.

There is a pump inside the unit I guess if it is a combi?

Screenshot 2024-12-05 at 7.42.14 PM.png

joseluisheating

Thanks for your response @hot_rod I appreciate.

Indeed, I would make sure pipe is well clear and remaining would be remove must possible to achieve good flow stream.

Yes, those are closely spaced tees in the botton run, the first image give it a better view. I don't understand what your mean by clockwise. The supply is running from the left to the right side, and return from the right to the left.

Indeed it is a combi boiler (Naiven). It does have isolation valve with drain/purge and pressure relief. However, I would try to add a tee and a hose valve at the lower part of the return, to purge the air in the system.

Yes, there is a pump inside the combi boiler.

SuperTech

The work you did looks great. Very neat and it should work well for you. I wish you didn't use a Navien, that's a shame. When that boiler inevitably fails at least you have some nice piping and good components to install on the replacement boiler.

psb75

Good eye for the Navien SuperTech. Also good advice to the original poster.