EDIT: Added pictures
My mammoth, inherited, Smith 19A, 413MBH boiler cracked a section just before christmas, and is now making someone a much better tractor weight than it ever was a boiler for me
Unfortunately, breaking when it did meant that selecting and installing a replacement wasn't the meticulously sequenced and planned process I hoped for! And more importantly, I didn't get to run my plan by you guys first!
I chose a Burnham MPO-IQ 147 with Outdoor Reset, and an installer I'd worked with before, and was happy with his work. I'm pretty happy with the install, and the heat seems more even. It's certainly quieter and much more easy to live with.
I'd be so grateful if some generous eyes could look over the install and point out any potential issues before the inspection on Monday, and anything I should ask the installer to tweak before I send the final payment and zip things up. I've included some pictures below. I can take specific pictures of anything you think is worth a second look.
My system is 4 zones and DHW.
The only significant differences I see from the piping diagram in the installation manual are:
* The boiler bypass line is piped with 3/4", rather than the 1 1/2" specified
* Flow control valves are installed on the return piping, rather than just after the circulators on the supply side
And I do have some questions:
* The boiler temp can often drop to as low as 100F between firings. When a call for heat comes, it can take up to 10 minutes to reach 130F. As near as I can measure with my infrared gun, the return temps on the manifold continue to be near 110F at that point. Should I be worried about condensate?
* The near boiler piping is 1" copper, mated to the existing 1 1/4" or 1 1/2" steel piping for the zones. Any issue with that?