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  1. T

    Safe pH range in central heating water

    In my case it's not about the cost because the I am not paying. It's all about having the job done properly resulting in this expensive system being in a safe condition not subject to corrosion.
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    Safe pH range in central heating water

    Brambles, your input is most welcome. Helps me understand the issues and decide what to do next. I think I will phone Innasol as you suggest.
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    Safe pH range in central heating water

    Quote below from the warranty section of the user manual. But, it was mentioned in this thread that in the UK softened water is not commonly used? "Water is the intended heat-transfer medium. For special anti-frost requirements, up to 30% glycol may be added. Softened water is required for...
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    Safe pH range in central heating water

    Please see ... Dropbox - ETA HACK_User_Manual_2012-02.pdf - Simplify your life Dropbox - ETA Hack service manual.pdf - Simplify your life
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    Safe pH range in central heating water

    The original commissioning was overseen by an expert from the UK sole importers of ETA boilers, so I assumed that it had all been done properly. As far as I am aware only standard mains water was used which is relatively hard in my area. Plus Trade-Chem inhibitor.
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    Safe pH range in central heating water

    Brambles, your post has prompted me to look at the ETA Hack 70 user manual. I am not sure how relevant it is to my topic? Page attached.
  7. ETA HACK_User_Manual_page 37.jpg

    ETA HACK_User_Manual_page 37.jpg

  8. T

    Safe pH range in central heating water

    Brambles, thanks very much for your comprehensive input. Just to be sure we are taking about the same boiler, my boiler is an ETA Hack 70, not an ETI. ETA HACK 70 to 90 kW - ETA Heiztechnik GmbH
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    Safe pH range in central heating water

    The problem prior to the power flush cleaning was the colour of the water - dirty brown, brown sediment in the bottom of the sample jar when left to settle, and a pH of 4.73. When the two Fernox TF1 filters were flushed the contents were dark black. The problem now is that the pH is 6.0...
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    Safe pH range in central heating water

    The cleaner was run with heat for around 2-3 hours. The current problem is that I can't obtain the information as to how long the manufacturer recommends the cleaner should be run for (see above). The power flush cleaning and refilling of the system with inhibitor was done by the original...
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    Safe pH range in central heating water

    There are no steel press fit pipes in the system.
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    Safe pH range in central heating water

    Throughout my threads I have never said that it is a normal domestic system. It is a biomass 70kW ETA boiler system burning woodchips. Please read.
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    Safe pH range in central heating water

    The suggestion is that one day was not long enough for the power flush cleaner to do its work. Plus the time it takes to thoroughly flush out the residues.
  14. T

    Safe pH range in central heating water

    It's a biomass system with a 650 litre buffer tank and 100 metres of underground pipe to two properties. The circuit in question is separate to any radiator circuits, that is separated by heat exchangers.
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    Safe pH range in central heating water

    It has been suggested to me that a thorough power flush of a dirty system with cleaner can't be done in one day. Maybe more like several days to a week?
  16. T

    Safe pH range in central heating water

    Well, I have a situation this week that 50 litres of C100+ inhibitor added to fresh mains water of 6.7pH, tests at 6.0pH. To me that suggests that the system may not have been completely flushed clean after using C600 power flush? Prior to the power flush the water was visibily brown rusty with...
  17. T

    Safe pH range in central heating water

    At this point I don't even know if the Trade-Chem C100+ inhibitor is alkaline or acidic.
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    Safe pH range in central heating water

    Unfortunately I am constrained by the choice of chemicals already made by the supplier/installer of my biomass heating system. I am suspecting that the power flush conducted this week may not have been done properly, so I want to research both the power flush and inhibitor as thoroughly as...
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    Safe pH range in central heating water

    Yes, point blank refused. Apparently the Trade-Chem policy is to only supply such information to their existing customers. Why the secrecy?
  20. T

    Safe pH range in central heating water

    Does anyone have access to the data sheets for Trade-Chem C100+ (C100S) inhibitor and Trade-Chem C600 power flush please? Also Trade-Chem step by step instructions on how to use the C600 power flush? I have been refused.
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