Best Of
Re: Replumbing: Solder or Threads for Ball Valves
Galvanized in cold water is still in usable shape after 60 or 70 years, 100 years out of soldered copper is reasonable. I'm not convinced about the o-rings in propress either although it is crimped in such a way that there is a lot less reliance on it remaining pliable.
mattmia2
Re: Utica now offering 12 year warranties, longest in industry
The steam comes out sideways across the surface of the water rather than straight up off the surface so it is easier for it to pick up the water droplets that emerge with the steam. With a top outlet boiler physics are more in your favor for keeping the water in the boiler and separating the water from the steam.
mattmia2
Re: Increase ΔT to 15K with ASHP
To elaborate further:
Let's say that to meet your heating load your emitters need to have an average temperature of 110F. You can meet that by sending water at 115F and returning at 105F, or sending at 120F and returning at 100F, or sending at 125F and returning at 95F. It the first case the delta will be 10F, the second 20F, the third 30F. Since the BTU output is the same in every case the flow will be half the first in the second case, and one third in the third case.
While the BTU output is the same, the COP will be lower in the second and third cases because the delivered water temperature will be higher. The total energy usage will be lowest in the first case, with the smallest delta.
Re: Replumbing: Solder or Threads for Ball Valves
Nah. I'd call that pretty reasonable- at least with our water.
Re: Utica now offering 12 year warranties, longest in industry
If that were the case wouldn't lengthening the warranty coverage period just cost Utica more money?
GGross
Re: Utica now offering 12 year warranties, longest in industry
They are ok for hot water although still more awkward to pipe.
mattmia2
Re: Experience I had with a boiler tech and what I learned along the way.
Read, read and read some more. The older publications are the best. Many technicians haven't read since high school and with the poor training in many careers, have only learned the bad habits of their "mentors".
Re: 1972 HB Smith OHB13W-7T 7 Section Combustion Chamber Replacement
That looks like the same boiler as the Dunkirk 1352. The Quickie 2 will work fine.
HVACNUT
Re: Utica now offering 12 year warranties, longest in industry
Not a fan of side outlet boilers. Ever
