Could some one help me out on the appropriate mixture for radiant floor protection. I am using Cryo Tek 100. I am a little confused if i should be protecting the system down to the maximum freeze temp, the burst temp or the minimum flow temp. I have attached the spec sheet for Cryo Tek below. I live in MN where the lowest we ever see is about -20 to -30. My system is a closed system in a slab floor for a woodworking shop and my goal would be to protect the tubing and the boiler components even if i didn’t use the system for a winter.
http://www.herchem.com/specs/cryoteck.pdf
Thanks
Aaron
Replies
Provide freeze protection for the lowest expected temperature that you will expect to see. The other numbers, minimu flow and bust protection temperatures, that are substantially lower than the freeze protection number. Based on the ASHRAE climatic data (for Mankato) I would recommend freeze protection to -15 or -20, depending on where in MN you live.
Thanks for the info, near Minneapolis so that should work. thanks again.
Then all you need is the burst protection rating. Who cares if it slushes up, if you aren't heating?
Now, if you want to be able to come in during the middle of January and start up your stone cold slab, then you want the freeze protection rating.
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