Best Of
Re: Am I crazy? Chimney company says you can reduce the flu.
And in the meantime, lock out the boiler before someone dies.
Re: Lennox Model HS24-411-1P WITH C16-41-1FF COIL
Looks like 3 tons.
Literally the first Google result.
ratio
Re: high humidity in my house
The Δ on the water is fine for now. Slowing the water down without lowering the EWT will increase the LWT (we're cooling, not heating), & will increase the AWT, & cooling will decrease. Slowing the water down along with lowering the EWT will lower the AWT & increase cooling, but simply lowering the EWT without slowing it down will increase cooling (slightly) more. Plenty of time to chase efficiency (increasing the Δ) later, once things are doing what they should.
We might be looking in the wrong direction. How confident are you (OP) that there isn't an unaccounted-for high-latent load? Lot of pets? Aquarium? Have you tried turning off the HRV to see what happens to the RH? It's my understanding that an HRV keeps the moisture in the building, making the equipment sizing even more critical for dehumidification. Is this a constant thing, or does it roughly follow outside conditions (high indoor RH when it's rainy, less high when it's drier outside)?
But cranking the water temp down low will help, at least until we can figure out what's happening. Water temp down, air speed down too. Since we don't have to worry about freezeups like we would with DX cooling, I'd crank everything down as low as I could to see how much condensation I could get.
ratio
Re: Steam system from the 1830's
The odd looking tee is either an air vent or a safety valve, or maybe some sort of ejector. Is it mounted on the steam main or the dry return? Can we get a close-up of the lettering on the side?
This system doesn't date back to the 1830s. Remember, Stephen Gold didn't patent his system until 1854. This is probably from the late 19th or early 20th century. If the building is older than that, it was retrofitted.
Re: Am I crazy? Chimney company says you can reduce the flu.
Chimney company is nuts. There are instances where you can reduce a liner size if the chimney is high enough to produce more draft. Usually with a tall chimney you can go down 1 size. Going from 8" to 5" is a joke.
The customer should call the local building/plumbing/heating inspector, and they should get a complete refund from the chimney company and then either have them (or preferably another company) to install the correct liner.
Re: heat pump manufacturers
No, we can't have pressure switches because we now have to pay for refrigerant leak sensors for refrigerant that will not sustain a fire if you hold a torch on it and pay for ECM motors and other crap that costs a bunch to replace.
Re: heat pump manufacturers
Next thing that will happen is homeowners' insurance rates will rise if you have R-32 or R454B due to flammability issues.
Insurance companies never loose
Re: Worst advertising
There is nothing wrong with the guy's thumbs. The pliers have orange-ish handles that could look like thumbs if you're not wearing your glasses, but the thumbs are clearly visible and very not AI
GroundUp
Re: OT: Underground Wiring Options
" so within a week or so we hope to have our landscaper trench out at a depth of 18" "
Deeper than 18". The top of the PVC conduit needs 18" of cover, not an 18" trench. So if you use a 1-1/2" which is the best part of 2" Outer diameter and if it is in sand, you need a deeper trench.
I would and have done three conduits;
one high current 1-1/2 or 2" (in your case not populated)
one 3/4" or 1" for low current branch circuit and
one 3/4" or 1" for low voltage or communications type stuff.
With better protection of the wire the burial depth is less.
109A_5
Re: Weil McLain Plus 80 indirect water tank
this is the vent. It appears to be a 1/4 mounted on a 1/2 adapter.
So this is on the boiler side, I just need to shut off the isolation valves on the boiler side, drain the water a few drops to relieve the pressure and then unscrew and replace right?
