How Rinnai minimises the problems of scale

Published:  08 March, 2013

DHW, water services, Rinnai, hard water, scale
Inherently easy to keep free of scale — Rinnai continuous-flow water heaters.

According to Rinnai’s Scott Humphries, its continuous-flow hot-water systems are easy to keep free of scale. He says, ‘When quoting for big installations, for example, multiple showers and numerous wash hand basins — continuous-flow systems save 30 to 35% on install and around the same on gas costs. And there is no costly messing around with salt-based conditioners.’

He adds, ‘Even where a “turnkey pack” system such as the Rinnai Infinity Plus Storage is fitted and a booster tank added, the water is unlikely to be held for 24 hours. These systems are commonly used in hotels, for example, to deal with peak demand times, and because these recover in minutes, scale is never likely to be a problem.’

Rinnai heaters also incorporate a scale-warning device that continually monitors appliances for lime-scale deposits around the heat exchanger. Once lime scale has been identified, a message is sent to the built-in interface panel on the front of the appliance to alert the end user that it is time to call a Rinnai service agent to perform a lime-scale flush.

A continuous-flow system can also be combined with zinc treatment to virtually eliminate scaling. The process gives up zinc ions that stay in the flow for a longer conditioning cycle.

The cost is as little as £200, depending on the diameter of the pipe.

Unlike calcium water softeners, zinc treatments only need attention every two to three years, which could simply be built into the maintenance contract, thereby keeping costs down.

For more information on this story, click here: March 2013, 101

comments powered by Disqus

Search

Welcome

Welcome to Modern Building Services Online, the web edition of Modern Building Services (MBS) journal and the UK's most popular Building Services engineering site. Modern Building Services covers the entire Building Services Engineering industry. This site contains archived content from the journal, plus web-specific content.

When you go to our digital edition, you can also access the archive of digital editions.
December 2017: DIGITAL EDITION
ARCHIVE OF DIGITAL EDITIONS

Modern Building services has a group
on Linkedin - join us!

Jobs

  • Intermediate / Senior Mechanical Engineer

    The Mechanical team undertake the design and specification of a range of Mechanical building services in a lead or supporting role, depending on project complexity and scale. You should demonstrate a flexible approach to design and team working and wil......

  • Senior Urban Designer

     Applicants will be Master’s Degree qualified Architects / Urban Designers, with a strong portfolio of work highlighting a variety of projects at a range of scales and types, with strong focus on regeneration, infrastructure-led projects and major develo......

  • Principal Structural Engineer

    We are currently recruiting on behalf of a global client, with a diverse range of award winning projects to their name. Their experience spans a host of market sectors, including transport, infrastructure, defence, scientific, education, high-tech and ......

more jobs »

Poll

"Is the Building Services industry lagging behind in the implementation of BIM?"