Best Of
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
Re: Utica now offering 12 year warranties, longest in industry
Does anyone really believe that any of the manufacturers will ever honor any of their warranties?? I have yet to see a residential boiler replaced under warranty. Warranty is certainly not going to cover installation costs. Will they give you a new block? Will they give you new controls? Will they require you to ship the damage section to them for inspection and then best case scenario they will send you a new section??
Re: Stadler radiant heat loop always circulating
Follow the flex electrical conduit to see what powers the pump. It could be as simple as a stuck relay.
Why was the burner nozzle changed? Was the boiler not keeping up with the heating load?
hot_rod
Re: Stadler radiant heat loop always circulating
my guess is the cap tube you can't find the end of goes outside somewhere for outdoor reset so the loop temp is set by the outdoor temp. the constant circulation isn't super unusual for a radiant system.
is the main loop also radiant?
i don't see why the boiler would rise to 170 from a low limit call if the low limit is at 125 unless it has the differential set very high or a heat call is bringing it there
mattmia2
Re: Seeking Engineer for Off-Grid Religious Facility Heating in the Mountain States
The beauty of gravity hot water is the energy density of the heating medium, so in theory you could heat an entire 11,000 sf building with just one properly-sized boiler and distribution system consisting mainly of water pipes of reasonable size.
By contrast, air has much less energy density, so your distribution system needs much larger cross-sectional area vs. water pipes. Very large ducts, especially since you're relying on gravity, with no blower systems. So now your ductwork is taking up quite a large amount of your interior space.
To put it in numbers, you would need over 3000 cubic feet of air to carry the same number of BTU's as 1 cubic foot of water, assuming the same delta T. That is a massive difference that has major implications for the entire interior design of the building. Assuming the same flow rate in linear feet per second, that means an air duct would need to be over 25 feet by 25 feet square , or the size of a large living room, to carry the same number of BTU's as the water in one 6-inch pipe.
And the low energy density of air also means you have very little buffering effect. As soon as you stop heating the air, interior temperature falls quickly. Whereas the thermal mass of the water holds the heat and releases it slowly, so the stored energy in the water continues heating the building for hours after the boiler stops firing.
And then you add the compexity of having to manage the firing of multiple air heating units distributed throughout the building, vs having just one boiler to manage in the case of hot water heating.
jesmed1
Re: ProFlo Press Fittings & Ridgid Press Tool
zoom lock and RLS have been making refrigeration press fittings for over 10 years.
pecmsg
Re: New Steam Boiler Installed, Water Hammer, Prematurely Turns Off, Frustrated
I will keep an eye on it, if it happens again, could this be a bad pressuretrol?
Unfortunately, this is a common failure case, but I think your adjustment is a good fix. In summary, all pressuretrols are bad, even when they do work.
The boiler will definitely need more skimming with that new piping. You can see the oil above the water in the gauge glass. It is highly likely to surge, IMO. Sounds like you are watching it, nice.
You have done the near impossible, getting a company to repair their own piping. From what I can see it is looking good.
Re: Loud radiators - first “shoulder season” night
Don't worry about the pitch, it doesn't matter as long as it's reasonable level.
But since you hear gurgling, there is likely a "settling" that has occurred in your house that has changed the pitch of the pipe under the floor that supplies that radiator. You replaced the valves which rules out another cause which is the valve's seal plate thing rusting and dropping from the valve's vertical screw.
If you hear a radiator gurgling try raising the radiator (both sides) a small amount every few days, like 1/4"-1/2" and see if the behavior is affected. If you are lucky, you will correct the pitch enough to let the condensate drain out of that section of pipe.
As it seems like you know, the reason it does this in the shoulder seasons is the trapped pool of water has time to cool off enough that it causes the steam to collapse when they come into contact. When the water is warm/hot the steam can co-exist with the water.
You can use a two-by-four and a block of wood to make a lever and you can use 1/4" pieces of plywood or whatever under the legs.