Water Treatment Program for Aluminum Boilers
Choose Purified Tannins for the most efficient and simple water treatment program to treat multi-metal, closed loop hydronic systems
Water Quality Standards
Known
Standards to preserve the operating efficiency of all Patterson-Kelley condensing boilers
New Standard for pH: 8.0 - 9.0
Using TGWT's water treatment program allows you to extend the pH range in your closed loop for a complete protection: Aluminum (boiler), Mild Steel (piping) & multi-metals
Reference:
R. Gaudreault, M. Dargahi; TGWT Inc.
Purified Tannin Products Available
The Product
TG 3304 PM2
Liquid form Purified Tannin
2 gallons per 1,000 gallons (2,000 ppm)
Non Hazardous
B 3304-C-STX
Solid form Purified Tannin
3 stick per 1,000 gallons
Non Hazardous
How to Measure Purified Tannin
Simple Color Comparison Test
A simple colorimetric test is needed to measure the tannins' residual in a loop
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In case of product overfeed, closed loop system will be protected against corrosion as long as the targeted pH range is being followed.
More Accurate Colorimetric Test​
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Different test kits suited to your needs are available
To-do By Your Operators
Testing
What:
pH
Conductivity
Residual tannin
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When:
Best practice is once a week
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How:
TGWT Patterson-Kelley Closed-Loop Test Kit
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Why:
Tannin dosage and pH adjustment have to be performed to meet the targeted range
Log Book
What:
All the values have to be registered in a log book
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When:
Every time you are running some tests
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How:
By the operator in charge of the tests
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Why:
To keep a record and to make sure the program is under control​
Recirculation
On shut down systems, in summer for example, water re-circulation should be done:
At least 1 hr/day
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Why:
To ensure continuous surface protection
Water Sampling
Day One Equipment Startup
Water Samples from:
Water make-up
Each closed loop
Three Months
After the Startup
Water Samples from:
Each closed loop
For highly contaminated systems, monthly analysis are highly advised
Each Year
After the Startup
Water Samples from:
Each closed loop
Water samples should be sent to TGWT's laboratory. This will show any significant changes in the water chemistry that could impact boiler’s operating efficiency. The lab report will allow you to correct any fluctuations in the water chemistry
Laboratory
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Send it with your samples to :
TGWT
c/o Laboratory
Object: Patterson-Kelley analysis
452 Jean-Neveu Street
Longueuil, Quebec
Canada J4G 1N8
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