Best Of
Re: Flame Retention Head for Weil Mclane Boiler
Sadly that oil burner was manufactured by Weil Mclain in an unsuccessful attempt to make a "BETTER" oil burner. And this particular part 643-900-110 no longer shows up on any supply house inventory searches and no longer shows up on the Weil McLain Parts Finder. You are SOL trying to find that thing. You will most likely need to replace it with a Beckett or Carlin or Riello burner that is approved for that boiler. I even looked on eBay for the part. NADA!
Sorry for the bad news, but your contractor is correct, you can not operate that burner without that part. My son is currently operating that particular burner in his Buderus boiler. I can ask him if he may have one in his junk oil burner pile.
Re: Correcting my 2 Zone Monoloop System (Need Help)
You are correct. His system has the diverter T's on the "supply" side, which is counter to the recommendations. However, it is correct and the system should function properly. Of course, the arrow on the supply side will be opposite to the direction of flow.
Since it is piped correctly based upon the T's, the problem remains. It simply cannot be attributed to the circulators on the return. That's not sufficient to cause the issues that he has.
To the JW:
There is no benefit to repipe the system to flow the opposite direction. The system was originally designed properly, although a bit unconventional. Ed is correct.
LRCCBJ
Re: Viessmann cast iron boiler replacement.
I believe that is a Verticell indirect water heater
GGross
Re: ISO a very accurate thermometer to be certain my large steam heated Hse is properly heated
There will always be a +/- rating on any temp sensor. The accuracy that you are looking for can be found in more process control type sensors. Depending on how elaborate you want to get you can use a power supply/ 4-20mA sensor and a display to make a custom one. Here is a link to a website that should have what you are looking for. Tekmar also makes some controls for steam systems.
Re: Our emergency steam boiler replacement in Brooklyn last week looked like this:
Nice looking project. Love the drop header
Re: Our emergency steam boiler replacement in Brooklyn last week looked like this:
Beautiful heavy work, John. You should be proud to be doing work that nice after so many years at it!
Now that's one fine wrench. Probably cost more than my truck.
Love the press fittings.
Re: Control assistance
Back draft may happen ONLY if that new duct causes a negative pressure in the room. So if the wood stove room has the doors shut and any supply register are sealed off, then that room may have a negative pressure. However I see the wood stove room as one that has the entry way from the rest of the house always open, with an open floor plan to the rest of the house. There is most likely no closable door to that space. But that is just my thoughts on that matter. @SuperTech, you are correct to point that out, just in case I am wrong about my floor plan assumptions.
Re: Measuring heat loss for a properly sized Combi
My mistake, I got the EK Ascent and Resolute mixed up.
Re: Measuring heat loss for a properly sized Combi
It's not cast iron, it's steel and better than any cast iron boiler. Energy Kinetics makes a version of the System 2000 that has the boiler above a small storage tank. With their plate heat exchanger it produces plenty of hot water. With the Carlin EZ gas burner you will get over 85% AFUE and you don't have to deal any condensate or modulating equipment, much more appropriate for baseboard heating than a combi in my opinion. I've seen these boilers fit in tight closets nicely.
EK also has the Resolute boiler that is designed to replace tankless coil boilers, although I am not sure if they are available with the Carlin EZ gas burner, I've only seen them with oil burners.