Best Of
Re: Help me calculate pressure drop!
With an atmospheric boiler with limited air adjustment being short of gas will give you the same combustion that his test results show….low CO2 which should be closer to 8%
Re: OT What is this metal piece found in excavation?
Did you try a magnet on it?
You could scrap lead off the sheaf if that is what it is.
Could that have been the original UG feeder to the house?
Our utility had similar cable UG feeding post street lights from the 1920's.
Won't bend easily because of the rubber insulation inside.
JUGHNE
Re: What size pex tubing do you recommend?
Thanks for your patience in dumbing it down for us addled brainers, @GroundUp.
Re: high humidity in my house
Not in a position to run all the numbers right now, but that HRV isn't helping you a bit. Consider: all the moisture it is bringing in from outside gets into your inside air unless it is taken out on the cooling coils.
You want to crank that chiller coil as low as it can safely go — and since it is water, 32 is it. Then crank up the air flow in the return (not the HRV) and the chiller power to run as much air as you can to get a discharge air temperature from the coil not higher than 40 (lower will be better)..
Re: Replacing cast iron radiator with smaller one
@EdTheHeaterMan Here is the install I did a while back. This is a pumped gravity conversion with modcon so lower temp.
Not the best picture but you can see the manifold in the wall, there are 4 parallel loops to reduce the pressure drop. Total needed was only 0.6 GPM so pressure drop is tiny as each loop is also pretty short. Flow is not an issue as delta T is less than 5F across the pipes.
The important bit (which you can just about see) the the rigid insulation installed by the rim joist sealed in place with canned foam. This type of setup won't work properly if that is not done.
This can be made to work with any setup (maybe not with a true gravity one) as long as there is a bit of upfront design.
Kaos
Re: Help: drain leak in slab under a radiant concrete overlay!
option 3: run a new line along another route. What’s the frost line (depth) for your area.
PC7060
Re: Help: drain leak in slab under a radiant concrete overlay!
Hi, I would want to know where all drain lines run, so I'd know what my options about tying into them might be. Another possibility with a kitchen sink is to call it grey water and run it out to the yard. Then simply cap the existing drain. That possibility might vary with local codes. If one section of (probably iron or steel) drain is failing, others are likely close. Can a plan be made for re-routing the lines out from under the slab? 🤔
Yours, Larry
Re: Leaking valve on water tank
This ^^^^^. Before you go to the trouble of replacing it, which would be a bore, try fixing it — which might take a few minutes…