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re flushing geo loop
zepfan
Member Posts: 406
in Geothermal
Is it recommended that a geo loop field be re flushed periodically? Even if the system has not been open for a repair such as a leak repair or pump replacement? I had heard somewhere that this is recommended to be done ever five years. Thanks to all
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Water or Glycol?zepfan said:Is it recommended that a geo loop field be re flushed periodically? Even if the system has not been open for a repair such as a leak repair or pump replacement? I had heard somewhere that this is recommended to be done ever five years. Thanks to all
Straight water unless a lot of makeup is used, I don't see a need.
Glycol does break down over time so it's possible.1 -
Is it plain water, glycol, or methanol?
Take a sample and smell it. What does it look like. Glycols tend to go dark when they breakdown.
Most all of the chemical suppliers will do a fluid test if you send a sample.Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
Thanks to all that responded. The loop has methanol in it. The piping comes out of the ground is the black flex able piping ( I forget the name) then it coverts over to schedule 40 PVC that goes to the units0
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I would put an air test over the fluid that is in the system. You don’t want to flush away all that GEO fluid. Nor do you want to lose it through a leak in a loop somewhere.
If it has a prebuilt pump station, there is usually isolation valves and often a test port to add a gauge and fill fluid or air testBob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream1
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