Best Of
Re: Softwood flooring over low temperature radiant?
This came up the other day with a customer in Moraga who had a wall of double-glazed glass and an open floor plan with nowhere to install radiators. He said one of my competitors was feeling nervous about keeping the room warm at design conditions and I agreed. Sometimes you're cornered and don't have an easy solution and what rises to the top may be the only solution which would be to use best quality plates or Ultra-Fin which would keep the area warm on most days and then to fire up the fireplace when it gets very cold. Set up the system for constant circulation as well.
Re: using a boiler in my shop. can I use PEX?
I see several of the B pex now approve expansion fittings. Sioux Chief and Zurn are two.
hot_rod
Re: Steam Repiping Help
Possibly steam colliding with water and water hammer, possibly issues with steam taking the return to get to a vent and closing the vent before the air gets out of the main so some of it doesn't heat or is slow to heat.
Your current issue is that the reductions in the horizontal have the drip on the high side of the reduction so that the condensate can never get out of the bottom of the main and to the drip/return then the steam hits that pool of condensate and collapses and causes water hammer.
mattmia2
Re: The Result of Using Non Barrier PEX
I know the Rhomar products have a O2 scavenger included in the blend. As In recall sodium sulfite.
The other important ingrediant ia a film provider. After the system is cleaned the 922 or 925 puts a thin coating on the metals. This helps ptotect them from corrosion. Similar to a rust coating on exposed metal, or anodized aluminum.
You can buy stand alone O2 scavengers, like the OWF manufacturers provide. It may be less $$ but doesn't include the ph buffer, film provider, etc.
If you have any aluminun in the system it takes a specific conditioner.
However if the ThermoCon is in the hydronic loop? it will take a lot of cleaner and conditioner.
The fill water quality is part of the equation also. If it is hard or high TDS, maybe get a DI cartridge to fill through.
Axiom has a few different cartridge sizes.
hot_rod
Re: Long-term project to update old hydronic -- let's start with the Mercoid switch!
If it were me, I'd pitch the bladder and go with an old school compression tank
and add an Airtrol fitting to the tank.
Re: Long-term project to update old hydronic -- let's start with the Mercoid switch!
I would guess the EX tank is too small as well.
Re: What does "Wet Steam" mean to you?
Can, if they collect somewhere.. Primary for that would be surging which I don't call wet steam, and there's a perfectly good word for that- surging.
Re: What does "Wet Steam" mean to you?
Again. mostly by effect. Sloshing, banging etc. To get real data, you'll have to do what @dabrakeman suggests.
Re: What does "Wet Steam" mean to you?
If this were a purely scientific discussion @ethicalpaul, my vote would be different. I would vote #4: All residential steam is WET steam because it is at the saturation temperature of water. For steam to be really "DRY" it must be superheated at least one degree above the saturation temperature. At that point there can be not water in the steam. As long as the steam is at the saturation temperature, then it can contain some water vapor or actual liquid water condensate.
But I stand by my answer in this forum because we refer to wet steam as any steam that also entrains water as a result of the boiling process or as a result of the velocity of the steam traveling thru the piping system that reaches the main piping that is well above the water line of the boiler.
Wet steam in this context is relative the the industry. You can see wet steam in the videos you post and the video of the Weil McLain boiler with the glass piping.
When your system is in normal operation, there may be a little condensation on the glass pipe sections but you don't see that water moving up into the main piping. When you do some of those tests you do then the water surges past the glass pipe.
So WET steam in our world is actual water surging into the main. while saturated steam is considered Less that Wet Steam. (but not really Dry Steam)
That's my story and I'm sticking to it!
Re: Outside of combustion chamber red hot
Who was able to have the knowhow to install a brand new burner, but not have the knowhow to see what was 6 inches away from their face? Consider yourself lucky.
HVACNUT