Best Of
Re: When to NOT use sharkbite? A question
Yes there are a lot of water shut-off devices on the market now. From mild to wild. I've heard some insurance providers give you a deduction if you have one installed?
Certainly some additional piece of mind. Regardless of the type of fitting or connection.
hot_rod
Re: Confused - Hydronic air handler VS heat pump VS heat pump plus furnance
Houses get dry in the winter because air contains much less moisture when it's cold, and inside air leaking out and being replaced by outside air means the house loses humidity. All other things being equal, a house with forced air will lose more air to leakage than one with hydronic heat, because the forced air requires that parts of the house be pressurized and other parts depressurized in order for the air to flow.
The tighter the house is the less of a factor this is. If you are putting on an addition and building it to modern standards — actually following the letter of the current IRC and IEEC — this should be a non-issue. Building to modern standards addresses many of the comfort issues with heating, a lot of the conventional wisdom dates from a time when houses were much leakier and more poorly insulated.
Tight, well-insulated houses are just more comfortable. I like to say an ounce of insulation is worth a pound of hydronics.
Re: Simple effective addition of AC to dome home?
"Framing is done, it would be a lot of work to redo at this point so hoping to find an effective solution for the space that I have."
Disabuse yourself of that notion. Framing is the quickest, easiest part of the job. Rework is done all the time. It's just nuts to try to work your mechanical system around how a closet has already been framed.
Re: Your favorite Heating Help questions
"Should I run one pipe or two pipe (for oil)?
"Should I install a Tiger Loop"
LRCCBJ
Re: building a pasteurizer
This is what you want to design:
Instead of a big HX to the boiler only, you have a large one between the fluid coming in and returning (recovery hx in the picture). This captures the heat from the pasturised fluid and uses it to pre-heat the cold supply. This then goes the boiler HX where the pasteurization happens. You'll need a length of tube after this to allow time for pasteurization.
If the recovery HX is efficient enough (that is approach temp at your flow rates/temps), you need very little boiler power and chiller at the end.
Kaos
Re: Help with hydronic piping to reduce hammer from circ pump
I don't know of any spring return ZV that breaks the end switch instantly. Either a cam has to move off the micro switch, or the magnet away from the reed switch in the Caleffi. But no more that a few seconds for that to happen, during maybe a 7 second to complete close off.
I know PABs work, but I'll see if they work with ∆P circs. As a zone valve closes, the PAB bypass opens, so the circ may think another zone is opening and speed up, not slow down??
I would think the expansion tank behaves like a water hammer trapped air space. The only difference is the water hammer arrester could be right at the ZV.
But it shouldn't take this much technology!
hot_rod
Re: New Home Laars Combi Boiler
The intake screen could be clogged on the unit. Check that next. Mad Dog
Re: My proposed Install
nope, it is just in series with the two other circs, doubling the head
One circ after the air sep and two zone valves is another option
A delta P circ would modulate flow as the zv open and close
hot_rod
Re: Wrestit wrench
Retired guy. When I need to get a really tight screw fitting off a loose piece of pipe with no Ridgid Tristand around, I'll lay a wrench in it's back like that and then scissor bite the joint.
Alot of times, the wrench on its back will move or fall over. This white wrench with the Wings is perfect for this. Mad Dog
Re: Wrestit wrench
Rap wrench is just a chunky bossing you can Whale on with a lump hammer. This white wrench looks like it has "wings" that allow the wrench to stand up on it's own so you can use the opposing wrench in a scissor bite. I love it..Yes..Ridgid tool should definitely offer this....Mad Dog