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Legionaires Kills at Sheraton in Atlanta.
Bob Boan
You can choose to do what you want, but you cannot choose the consequences.
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Albert Einstein
You can choose to do what you want, but you cannot choose the consequences.
That's WAY too low!
Albert Einstein
Attorneys are now specializing in legionella cases, down to the facility you may have contacted it at.
trainer for Caleffi NA
The magic is in hydronics, and hydronics is in me
"Spartan Bioscience, creator of the world’s first on-site Legionella DNA test, today announced a partnership with LiquiTech, a leader in Legionella prevention for the health care, commercial, and hospitality industries. Through this strategic partnership, LiquiTech will integrate Spartan’s innovative environmental DNA testing platform to provide a new approach to detecting Legionella contamination. With Spartan’s test, Liquitech can detect Legionella contamination in real-time and provide immediate remediation using their multi-barrier approach to dramatically improve patient and guest safety. This will provide unparalleled control of Legionnaires’ disease in health care and hospitality environments."
HeatingHelp.com
trainer for Caleffi NA
The magic is in hydronics, and hydronics is in me
> I’m working on it. According to them their inspectors require 105 minimum and 120 maximum at the outlets of the faucets / showers. So they all set their storage tanks and supply to ~110.
>
> really the only way to cover both bases is install point of use ASSE 1017 valves at every single faucet, set at 110, then run the tank up to 140F or higher.
The several that keep their storage tanks 140 or above use a master mixing valve in the boiler room to send 110 out to the building. I know that’s not the right way to do it but that’s how everyone does it around here.
You should have seen this one retirement home I ran a service call to. Different than the ones I’m talking about here. They used domestic hot water to heat the building. 4 inch copper pipes of domestic hot water leaving the boiler room at 120 degrees. Bronze floor mounted end suction pumps. Pipe to each room went to an air handler and their sinks / showers.
"Reducing our country's energy consumption, one system at a time"
Steam, Vapor & Hot-Water Heating Specialists
Oil & Gas Burner Service
Baltimore, MD (USA) and consulting anywhere.
https://heatinghelp.com/find-a-contractor/detail/all-steamed-up-inc
> You should have seen this one retirement home I ran a service call to. Different than the ones I’m talking about here. They used domestic hot water to heat the building. 4 inch copper pipes of domestic hot water leaving the boiler room at 120 degrees. Bronze floor mounted end suction pumps. Pipe to each room went to an air handler and their sinks / showers.
>
> That's a disaster and lawsuit waiting to happen.
WOW!
Minnich Hydronic Consulting & Design
I suppose it could be argued they are safer as all the HW piping is circulated all the time. Coil purge timers and valve assure even the small fluid capacity in the HX coils get flushed daily. Small potential for dead legs in un-used sections of the building.
A plate DWHX would separate the building from the public supply for protection of the other water customers.
trainer for Caleffi NA
The magic is in hydronics, and hydronics is in me
That is what I did in my house, but I send 120F (not 110F) to the building. The reason I did that was that while I would have been delighted to send 140F to the dishwasher, and put a mixing valve at the other delivery points, all the pipes are buried in the concrete slab where my heating pipes are also buried. And everything else is in the walls (ceramic tile in the bathroom) and behind kitchen cabinets and stuff. So there are two that I could not put a mixing valve in, and several others, but those mixing valves are too expensive.
The actual outlet temperature from my indirect hot water heater is in the range of 140F to almost 160F. I have a dial thermometer in the hot supply to my mixing valve, and another in the delivery line from the mixer to the house.
trainer for Caleffi NA
The magic is in hydronics, and hydronics is in me