Dan Goellner | National Commercial Accounts Manager
AccuMix II™ is a winning solution. It is a higher revenue product for the wholesaler, and it is a time and money saver for the contractor when compared to adding an external mixing valve to a point-of-use heater. My guess is that to avoid the added expense and labor necessary to install mixing valves, many customers use them sparingly—such as only in schools or nursing homes. However, the reality is that 43 out of 50 states follow either UPC or IPC plumbing codes which require an ASSE 1070 mixing valve in all public lavatories. The remaining 7 states (as well as Canada) have similar stipulations at the local level.
Eemax recommends that you take a closer look at your markets to determine if you are truly utilizing AccuMix II to its fullest potential. When it comes to tackling the challenges of plumbing codes, AccuMix II has you covered.
2018 International Plumbing Code (IPC)419.5 Tempered water for public hand-washing facilities. Tempered water shall be delivered from lavatories and group wash fixtures located in public toilet facilities provided for customers, patrons and visitors. Tempered water shall be delivered through an approved water-temperature limiting device that conforms to ASSE 1070/ASME A112.1070/CSA B125.70 or CSA B125.3. Tempered water is defined as water having a temperature range between 85 °F and 110 °F.2018 Uniform Plumbing Code (UPC) 407.3 Limitation of Hot Water Temperature for Public Lavatories. Hot water delivered from public-use lavatories shall be limited to a maximum temperature of 120 °F (49 °C) by a device that complies with ASSE 1070/ASME A112.1070/CSA B125.70. The water heater thermostat shall not be considered a control for meeting this provision.
AppendixL 503.3.5 Service Water Heating System Controls. Service water heating system controls shall comply with Section L 503.3.5(1) and Section L 503.3.5(2). (1) Temperature controls shall be provided that allows for storage temperature adjustment from 120 °F (49 °C) or lower to a maximum temperature compatible with the intended use.
Exception: Where the manufacturer’s installation instructions specify a higher minimum thermostat setting to minimize condensation and resulting corrosion. [ASHRAE 90.1:184.108.40.206] (2) Temperature controlling means shall be provided to limit the maximum temperature of water delivered from lavatory faucets in public facility restrooms to
110 °F (43 °C). [ASHRAE 90.1:220.127.116.11]