Navien NFB-399C (Commercial Boiler Install) #2 

That's 80 to 100 k job.nice job , the owner deserves that beautiful job .That's why he paid for. Congratulations.

Great job. clean & professional. 👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍

Respect to the trade brother. I build commercial boiler systems in the Yellowstone Club.

You absolutely do the nicest installs I’ve ever seen . 15 year plumber 👍NY

Very nice install. Very clean. Props for not using press. With those closely spaced tees on the primary, you actually don't need to reverse return the boilers.

I Love this guy. The best plumber on RU-vid Hands Down! I wish I could hire him in the States. 😊

When i got plastic pipe for drain on the ground where you can walk on it i like putting them in a metal bigger one screwed at the floor 👍clean job !

Another fantastic install👍

Wow great job. Only question is the cast iron used for pressure relief valve. That's not permitted in my area. I guess the thinking is rust could build up inside pipe and prevent relief valve from doing its job. Love your quality of work.

What’s with the sprinkler fittings? Your allowed to use sprinkler fittings on a heating system?