Sep 02, 2016

Tankless Treatment

Scale inhibitor reduces corrosion from limescale in apartment complexes

A distributor provided a cost-effective alternative treatment for boiler and tankless water heater limescale protection utilizing the United Filters stainless steel vessels, polyester-pleated sediment filters and Siliphos Scale Inhibitor media. Water softeners have always been specified for this type of water treatment to protect heat exchangers against corrosion from limescale (calcium and magnesium minerals intrusion). Siliphos scale inhibitor has been used since the early 2000s as a cost-effective option with little maintenance that is friendly to the environment.

Commercial multi-tankless water heaters are now being specified for large-scale apartment buildings instead of water softeners, and they require a more finite treatment for optimum operating capabilities.

Building #1: A 29-unit apartment building with five commercial condensing tankless water heaters in parallel, feeding the hot water with a solar water heating system that is also susceptible to scale corrosion. One five-round stainless vessel system with 2-in. in-and-out ports, equipped with five 2.5-in.-by-20-in. polyester pleated sediment filters and Siliphos Scale Inhibitor for approximately 50-gpm flow rate was installed in the garage at the point of entry to the solar water heating system.

After one year, the filters have been replaced and effectively protected the tankless water heaters and solar water heating system against corrosion from limescale without compromising flow rate.

Building #2: A 78-unit apartment building with 14 commercial condensing tankless water heaters located at two areas on the roof. Two seven-round round stainless vessel systems with 2-in. in-and-out ports, equipped with seven 2.5-in.-by-20-in. polyester pleated sediment filters and Siliphos Scale Inhibitor for approximately 70-gpm flow rate for each were installed on the roof to accommodate each seven-tankless-heater rack system.

After one year, the filters have been replaced and effectively protected the tankless water heaters against corrosion from limescale without compromising flow rate.

United Filters Intl.

Contact

901 S. Grant

Amarillo, TX 79101

United States

Phone: 806.373.8386

Fax: 806.371.7783

http://www.unitedfilters.com

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