Boiler Heat Exchanger Scale Negligible After 5 Years, Santiago

Home 9 Case Studies and Results 9 Boiler Heat Exchanger Scale Negligible After 5 Years, Santiago
Key results
5 years, negligible scale
~500 ppm water hardness
Heat-transfer sections protected

Case Study from HydroFLOW Chile

Boiler heat exchanger scale is a constant risk on very hard water, and in a 140 m² home in eastern Santiago the supply had gone from below 425 ppm to around 500 ppm. The domestic boiler served three bathrooms and a kitchen, and had already run for five years before treatment. One HydroFLOW® HS38 was then installed to protect it. About five years later, when the boiler was removed after an electronics failure, its heat exchanger was opened and inspected. It showed negligible scale on the fins and negligible limescale inside the exchanger pipework.

The Challenge

  • Boiler heat exchanger scale was a persistent risk on very hard water
  • Water hardness rose from below 425 ppm to around 500 ppm
  • The boiler had already operated for five years before treatment
  • Scale could restrict heat transfer and internal flow
  • One boiler supplied three bathrooms and a kitchen

The Solution

    • Unit installed: one HydroFLOW® HS38 (now known as HydroFLOW® Pearl)
    • Protected equipment: the domestic boiler and its internal waterways
    • Water: around 500 ppm hardness, up from below 425 ppm
    • Monitoring period: about five years, then an internal inspection

    The HS38 (HydroFLOW Pearl) was installed to protect the domestic boiler from boiler heat exchanger scale, and it ran for about five years as the supply hardened towards 500 ppm. When the boiler was later removed following an electronics failure, the heat exchanger was opened so that the fins and the internal pipework could be inspected directly.

    Key Outcomes

    R

    Negligible scale after about 5 years

    R

    Negligible scale on the heat exchanger fins

    R

    Operating water hardness around 500 ppm

    R

    Heat-transfer sections protected

    Independent Verification

    All results in this study were measured and verified by third-party facilities managers and technical staff.

    Summary

    After about five years with HydroFLOW®, the opened boiler heat exchanger showed negligible scale on the fins and inside the pipework, on water at around 500 ppm. For a homeowner on very hard water, the useful point is that this was an internal inspection of the exchanger itself rather than an estimate from outside. There was no inspection before treatment to compare against, so the result is the condition found at five years.

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