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Will Glycol cause problems in my Boiler

Will Glycol cause problems in my Boiler

Will Glycol cause problems in my Boiler

(OP)
I have a boiler that provides hot water to two jackets of my kettles. I also have a chiller feeding chilled water to the same two jackets of these kettles. I would like to add glycol to the system for freeze protection, but worried this might cause problems to my boiler.
Any thoughts or suggestions.

RE: Will Glycol cause problems in my Boiler

Is this boiler in storage during the cold months?

RE: Will Glycol cause problems in my Boiler

(OP)
No, the boiler is operational during the cold months. The boiler is stored inside whereas the chiller is outside.

RE: Will Glycol cause problems in my Boiler

one more question- is boiler water directly heating the jackets or do you have indirect heating of the jackets?

RE: Will Glycol cause problems in my Boiler

presuming hot water boiler . . .
if the temp of glycol exceeds upper temp limits (depending upon mfg and concentration), then the glycol can convert into carbon, thus degrade the fluid in boiler.  this temp is usually around 450°F.  however, if circulation in boiler is not that good, film temps can easily exceed the 450°F temp limit if exposed directly to radiant heat from burner.
good luck!
-pmover

RE: Will Glycol cause problems in my Boiler

You know,if the kettles are used for food prep. this may not be permitted by Code.

Even so....don't think I would,a pinhole could do wonders for allot of folks.

RE: Will Glycol cause problems in my Boiler

you say boiler, is really a vapor phase boiler.  Look up dowtherm glycol based systems.

If you turely only need say 300 F heat medium, then a pressureized glycol will work.  As for food, usa propylene glycol like my local brewery uses.

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