Best Of
Re: When to NOT use sharkbite? A question
@JayPoorJay Shark bites are made for your situation. The homeowner do-it-your-selfer.
I have found them to be a great transition fitting and have used them myself from time to time.
Simply follow the directions on how to install them.
The first thing I would do is install a couple of valves on the hot and cold lines to isolate this area from the rest of the house. 🤔😉
Intplm.
Re: Oldest Boiler
My brother lives in an old apartment building in Oakland. The building has two-pipe steam. Not very well maintained of course.
Re: Gas hissing from water heater combustion air inlet area
I see 2 Blue spots on the very left edge of the pic.
HVACNUT
Re: 1970's Block of Flats - Honeywell - Heating System
From the 79's, it could be ceiling electric radiant too.
Any chance you took a pic of one of the stats?
ratio
Re: Understanding Plumbing Licensing Suffolk/Nassau
Pretty good list. Plumbers should show it to their customers who complain about their rates.
Re: Replace B&G 100 or use Taco 007 monoflo
Paul48
Re: Replace B&G 100 or use Taco 007 monoflo
The 007 isn't the best direct replacement for a B&G 100 in terms of flow rates, though it may be the best match for your system.
The 0010's curve is closest to the 100 and even exceeds flow just a bit. It may be overkill. I really can't tell from here, but these are the specs.
JohnNY
Re: Air in boiler feed water
One trick is to raise the boiler temperature, maybe 180 for a few hours. And also raise the fill pressure as high as possible for the same period. Boosting the system pressure basically squeezes the bubbles small and it may be enough to flush them through.
At some point the system should get to a 100% air free condition, and stay that way for years. Unless air, or fill water with air in it is being introduced.
P/S can make it harder to get all the air out. Indirect tanks sometimes suffer the same issue, the coils never flush 100% clear.
The tanks with large coils 1-1/2" for example the flow velocity can be so slow it doesn't move air with the water to the vent locations.
Purge valves are fill and start devices, you should not need to use them on a regular basis. As you do, you bring in O2 laden water.
Playing with this small piping demo. I can pump a full cylinder of air into maybe 3 gallons of water content and within minutes all the air is eliminated. At room temperature! There is no question to the 97% efficiency of microbubble air separators.
I have been building and demonstrating air elimination hands on displays for maybe 20 years now. They are always a crowd pleaser when teaching hydronic techs.
hot_rod
Re: oversized water heater
it is a tough call, legionella, or scald litigation.
Elevating the tank temperature and mixing down is one option, or a chemical romance.
It comes down to your risk aversion, in some places cold water lines can harbor legionella. Piping run through attics in hot locations, for example. Now what?
That is one argument for a chemical solution.
hot_rod