How Raychem’s HWAT helps prevent legionella

Raychem, HWAT, DHW, domestic hot water, trace heating

Pentair describes its Raychem HWAT systems as the intelligent and safe way to supply instant hot water at the tap. The single-pipe direct hot-water service incorporates a smart self-regulating heating cable to provide a proven and precise method of delivering hot water at a constant temperature throughout an entire network. It eliminates the need to recirculate water and eradicates dead legs.

With no dead legs, there are no untraced pipes where water temperatures can drop the near 37°C, with the potential for legionella to thrive.

Pipework networks can also be shorter as there is no need for recirculation pipes. The space saved could be used for thicker insulation to save energy.

The combination of HWAT-R heating cable and the HWAT-ECO controller enables a desired temperature to be selected and the temperature increased for a time for legionella prevention. As such, the HWAT-ECO controller can be programmed for a legionella-prevention cycle.

For more information on this story, click here: Dec 2016, 166
Related links:
Related articles:



modbs tv logo

CIBSE calls for comment on Guide M

The Chartered Institution of Building Services Engineers (CIBSE) is asking for comment on one of its most widely used guidance documents - Guide M: Maintenance Engineering and Management - ahead of a complete update.

ECA urges careful planning amid ongoing materials shortage

The ECA is urging its members, as well as the wider industry, to continue to exercise caution and plan as far ahead as possible on projects involving cable management systems (CMS).