IAPMO published the 2021 Uniform Plumbing Code (UPC) and the 2021 Uniform Mechanical Code (UMC) in March. The codes were improved with safety provisions for the protection from legionellosis, safe installation of alkaline water treatment devices, and protecting homes with the inclusion of requirements for leak detection, just to list a few.
ASSE 1014-2020, Performance Requirements for Backflow Prevention Devices for Hand-held Showers; ASSE 1020-2020, Performance Requirements for Pressure Vacuum Breaker Assemblies; and ASSE 1069-2020, Performance Requirements for Automatic Temperature Control Mixing Valves, have been designated as American National Standards by the American National Standards Institute (ANSI) and are now available for purchase.
I’m a solar engineer – not a mechanical one. That’s one reason that I found out the hard way that designing domestic hot water (DHW) production and distribution systems for multifamily buildings is a lot harder than designing a single-family residential system.
Every year, in the United States, thousands of people suffer serious scald injuries in showers or tub-showers after the hot water system temperature has been adjusted. These injuries can be prevented with the proper controls and adjustments of the maximum temperature limit-stop on each shower valve.
The group is now accepting applications as it reforms to develop a new white paper concerning recommended installation practices for residential tankless/on-demand water heaters to reduce the danger of scalds.