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Swift Solution for Early Corrosion: How Aquaguard 810 Saved a New Heating System in this Education Facility in Only 4 Weeks
At a glance
A six-month-old heating system in this newly renovated school suffered from high corrosion rates. Despite high iron and low system pH, the competitor failed to correct treatment issues. Aquaguard 810 was added to the system to remove existing corrosion and protect from future corrosion issues.
Key metrics
94.6% DROP
IN DISSOLVED IRON
ONLY 6.5 L
OF CHEMICAL REQUIRED
4 WEEKS
FROM CORRODING TO PROTECTED
Why a new heating loop can corrode in its first months
A newly installed hot water heating system can look clean and still be corroding. Clear water does not mean the metal is protected. Rising iron and falling pH are the early signs that steel is dissolving inside the loop.
Left alone, that corrosion shortens the life of boilers, pumps and piping in a system that should last decades. In a school, where heating has to be reliable through the winter, early failures are expensive and disruptive.
This newly renovated school’s 3,000 L heating system, fed by two 1,500,000 Btu boilers, was six months old and already showing high iron and low pH, even with a treatment product in place since startup.
Challenges
The new 3,000 L heating system powered by two 1,500,000 Btu boilers at this school experienced rapid corrosion. Despite the water being clear, high iron and low pH levels were observed. The competitor’s corrosion shield product, in place since startup, failed to prevent these problems despite the system being only six-months old.
Solutions
Guardian Chemicals flushed the system and added 5 L of Aquaguard 810. After one week, an additional 1.5 L was added and the system monitored weekly. Regular water analysis and filter changes were performed. After four weeks and addition of only 6.5 L of treatment, the system was fully protected by Aquaguard 810.
Results
Protected from Corrosion
After Aquaguard 810 treatment, iron levels dropped from a high of 5.6 ppm to 0.3 ppm in only four weeks.
Clean System
Aquaguard 810 removed corrosion by-products, replacing them with a protective chemical film. After four weeks of treatment, filters were clean and water clear.
More Sustainable Treatment
Aquaguard 810 treats system surfaces to protect it from the water, while the competitor’s treatment was supposed to treat the water. By treating system surfaces, chemical demand is reduced.
Data
Aquaguard 810 System Cleaning EffectโPre-existing foulant removal and dissolved iron reduction. System fully cleaned and protected over 4 weeks.
Contact us to learn more about combating corrosion in your closed loop heating and cooling systems.
AQUAGUARD 810ย is an all organic treatment composed of corrosion and scale inhibitors, dispersants and buffering agents for use in closed loop systems. ย It does not suffer from issues regarding waste discharge (heavy metal) or biological control (nutrient for bacteria), unlike molybdate and nitrite based treatments.
Frequently asked questions
How much Aquaguard 810 was used?
5 L after flushing the system, then 1.5 L one week later, 6.5 L in total.
How quickly did iron levels drop?
From a high of 5.6 ppm to 0.3 ppm in four weeks.
How was the system monitored?
Weekly, with regular water analysis and filter changes.
How does Aquaguard 810 protect the system?
It forms a protective film on system surfaces and removes existing corrosion by-products. After four weeks, the filters were clean and the water clear.