Trying to fine tune Navien NCB-240...

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IslandMan54

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Greetings,
I had this boiler installed last year by someone who I thought knew what he was doing. Did not look at my home heating at all, which is a mixture of convectors and fin tube radiators. I've had to replace the gas valve, wasn't a full port valve, replace the expansion tank, was the old one of my old boiler and not big enough, replaced the circulators which were way over-pumping the system, added an additional 34 ft. of fin tube to the basement loop which is my office. New circulators are Taco VT2218 currently set on fixed speed 1.
I have this set up per some instructions from Dana who is on this forum but met him on another forum.
I have outdoor reset on, running Low Mass Radiant Curve, Low Outdoor set to -4, High outdoor to 96. All the rest of the settings are pretty much factory. I'm a data acquisition "engineer" by trade so I have this setup monitored. Please see attached image of the current operation this morning when I set this all up again. Any comments or idea's would be greatly appreciated.
Thanks,
Dave
 

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