Chiller winterizing

A friend is going to leave his motor yacht in Canada this winter and is wondering how the closed loop section of the system will need to be protected from freezing.

Thanks
Walt Hoover

Some systems run glycol on the loop. I think a strong antifreeze is the best option. Tarting to drain everything will not be easy.

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Originally Posted by Pascal

Some systems run glycol on the loop. I think a strong antifreeze is the best option. Tarting to drain everything will not be easy.

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I thought glycol in the closed loop was standard practice. We use it in all of our chillers at work in central Florida.

Running straight water both on my 54 and the 116 I run. The 116 was setup that way when I took it over 3 years ago and for mine I followed the chiller manufacturer directions

As long as the loop doesn’t get below the set temp it s not going to freeze

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Originally Posted by Briankinley2004

I thought glycol in the closed loop was standard practice. We use it in all of our chillers at work in central Florida.

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You would think. King of Prussia mall in PA runs water and was bugging out over the new CHWV's we installed that don't spring return. The coil on one AHU exceeds the cost of converting to tan in a can. Go figure.

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Originally Posted by madhatter1

You would think. King of Prussia mall in PA runs water and was bugging out over the new CHWV's we installed that don't spring return. The coil on one AHU exceeds the cost of converting to tan in a can. Go figure.

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And the wait to get an AHU what more a chiller has been crazy lately.