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Pentair warms up schools across Glasgow

07 June 2017

More than 10.6km of Pentair’s Raychem hot water (HWAT) maintenance systems and self-regulating cables have been installed as part of large-scale renovation project of 16 schools across Glasgow.

Designed to provide continuous, energy-efficient hot water temperature maintenance, without the need for a recirculation system, the installations aimed to maximize comfort and safety for both students and staff.

When considering the available hot water systems for the school renovations, there were strict requirements around the protection offered by the products, particularly in relation to minimizing legionella risks by inhibiting bacterial growth.

The chosen system also needed to provide an energy-efficient solution that was easy to install and avoided an extensive network of pipes, as well as delivering an immediate water supply.

The Raychem single-pipe HWAT solution from Pentair was selected to meet these needs. By adjusting their power output to compensate for variations in water and ambient temperatures, the Raychem HWAT-R electric heat-tracing cables replace supply-pipe heat losses at the point where the loss occurs.

The result is a solution that provides continuous, energy-efficient hot water temperature maintenance, 50% reduction in pipework compared with a conventional recirculation system and substantial energy as well as cost savings.

“Our Raychem HWAT system was the ideal solution for this project as it ensures the highest level of user comfort and safety, and reduces energy consumption to a minimum due to its intelligent self-regulating operation,” comments Andrew McGrath - Sales Manager, UK and Ireland at Pentair.

“This system now keeps hot water at the right temperature across 16 schools, reducing tapping times and water consumption.”

For additional energy savings and increased flexibility, 120 responsive HWAT-ECO controllers were also specified to monitor the boiler and reduce the operating temperature during hours of low use.

McGrath continued: “The controllers interface seamlessly with the building management system, further simplifying the installation process as well as maintenance procedures.

"By using smart control technology, the schools can ensure that power consumption is kept to a minimum in the safest and most sustainable way possible.“


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