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Replacing Floor Heat Glycol
- Thread starter Rudy
- Start date
2Biz
Thread Killer!
From what I've read, you need to test the Ph of your Glycol. Do you know if its Propylene or Ethylene? The Ph should be between 7.5 and 9.0 for Propylene. Anything outside this range becomes Acidic and is corrosive to your equipment.
I used NoBurst HD from Noble to fill my new system. They sell an additive in a pint bottle called Inhibitor Boost that you can add to your glycol to Boost Corrosion Resistance if it becomes acidic. They recommend testing it yearly with Ph test strips and adding this solution if needed. 1 pt treats 20 gallons of Propylene glycol.
I used NoBurst HD from Noble to fill my new system. They sell an additive in a pint bottle called Inhibitor Boost that you can add to your glycol to Boost Corrosion Resistance if it becomes acidic. They recommend testing it yearly with Ph test strips and adding this solution if needed. 1 pt treats 20 gallons of Propylene glycol.
I gave a brief call to Huron Valley today. If I have it correctly....it depends upon whether propylene or ethylene glycol was used in my system. Since my system is older, it probably has the ethylene variety.
The ethylene, although toxic to animals, is more stable. I was told that there's many older systems (mine included) with the original fluid running fine even after 20 years.
My next step though is to test the ph.
Is there anything special, or can any ph tester work?
The ethylene, although toxic to animals, is more stable. I was told that there's many older systems (mine included) with the original fluid running fine even after 20 years.
My next step though is to test the ph.
Is there anything special, or can any ph tester work?
2Biz
Thread Killer!
I haven't tested mine yet...Its brand new and my mix ratio is 40°, so I won't be testing it till next winter. I think any Ph test strips will work???
My old system had Ethylene glycol...The green stuff. The system was over 25years old and I doubt the glycol had ever been changed. When cutting the copper tubes out of the old boiler, I didn't see any signs of internal corrosion. Just on the outside because of the acidic condensation.
I think I'll keep a closer eye on the Propylene Glycol since I know more about it now. I'll also need to get a Refractometer Tester to test the glycols strength...
My old system had Ethylene glycol...The green stuff. The system was over 25years old and I doubt the glycol had ever been changed. When cutting the copper tubes out of the old boiler, I didn't see any signs of internal corrosion. Just on the outside because of the acidic condensation.
I think I'll keep a closer eye on the Propylene Glycol since I know more about it now. I'll also need to get a Refractometer Tester to test the glycols strength...
