Michigan NEED ADVICE

Discussion in 'Maintenance and Troubleshooting' started by KENTON COLLING, May 28, 2021.

  1. KENTON COLLING

    KENTON COLLING New Member

    Need some advice.
    I have backflushed my Waterfurnace now that the heating season is done. I used three gallons of 5% white vinegar pH = 4. Ran 1/4 Hp, 16 GPM pump for one hour, then shut down for 1 hr. Only small amount of discoloration of vinegar. Restarted and pumped for 3 hrs. Purged heat exchanger with water. Back flush effluent showed some darkening compared to clean water. A few particles of black scale in bottom of pail. Looked like iron.
    Question: Do I need to use a stronger acid like Muriatic or pump longer with vinegar. I had expected more black deposits, my well tests for iron at 0.1 mg/L.
    Any advice is appreciated.
    Ken
     
  2. SShaw

    SShaw Member Forum Leader

    I don't know what flushing solution you should use. Based on your other post it doesn't sound like you have much of a problem though. The water flow and delta-t look about right for that size unit. You mentioned a 20% increase in electricity, but that could be due to the weather, being at home more this year, etc.
     

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