Best Of
Re: Gorton #2 or Hoffman 75
Assuming a single riser is on the short main, if it was my system, I'd move the Hoffman 75 to the top of the riser. I'd then put a Barnes & Jones Big Mouth at the end of the 90 foot main. If you don't like the Barnes & Jones Big Mouth (some folks don't) I'd use 1 or 2 Gorton #2 at the end of the 90 foot main. I don't like to burn fuel just to push air out of the system through main vents that are more restrictive than they need to be.
Vent flow characteristics in this document.
https://heatinghelp.com/assets/documents/Balancing-Steam-Systems-Using-a-Vent-Capacity-Chart-1.pdf
109A_5
Re: Any pointers when doing a homerun type system?
I was just going to suggest that. This will save a lot of cutting. Some profiles even have a chase for the return pipe. The pipe is typically against the back side where the louvers cover it anyways so won't effect output. Adding a vent/bleed elbow on the return will make it much easier to get the air out.
Kaos
Re: American Standard Aqua Seal Faucet
a faucet seat tool is ideal, sometimes an EZ out type if the hex is damaged
hot_rod
Re: Replace homemade recessed radiator covers
That looks much nicer and will work great.
Re: Warm Morning VR50MA B Propane Heater Question
Did you find replacement bricks? I’m looking for them as well. Or a way to clean them.
mcmicko
Re: Post for feedback
.Not to worry about that ∆. The delta is always moving a bit until you reach thermal equilibrium. The point when temperature has stabilized, not increasing or decreasing across the loop. At that point you should be at design ∆. Probably most systems never are, as @Kaos suggested. It is rare that an installer checks these numbers. It could take hours, days, for a large concrete slab to reach thermal equilibrium on cold start up.
Lower delta= higher heat transfer rates. It does cost a small bit more pumping, and you want to stay below 5 fps velocity to keep things quiet.
Here is the rational for the increased output:
You would need to get up around 8 gpm in 3/4 M copper to exceed 5 fps
Idronics 23 is a good read for understanding heat transfer in Hydronic systems
Lots or residential insyallers that want to know or check flow rates install Quicksetters as you do not need a $3000.00 B&G delta P meter to read them :)
hot_rod
