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Mixing Sentinel X100 and Fernox F1

Discussion in 'Plumbing and Central Heating' started by creative101, 8 Apr 2011.

  1. creative101

    creative101

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    Hi, I have a one bottle of Sentinel X100 and one Fernox F1 (both superconcentrates). Question: Do i only need one or can i put both in (mix them) in my system via a rad? IF i only need one, which one is better?
     
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  3. mogget

    mogget

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    How many you need depends on the size of your system.

    How many radiators do you have?
     
  4. creative101

    creative101

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    7 in total.
     
  5. mogget

    mogget

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    One should be plenty.

    I use X100 myself, but the F1 would do just as well probably.
     
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  6. creative101

    creative101

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    Thanks. Got a question on adding the inhibitor via a towel rad in the bathroom.

    Each time i put some inhibitor through the top it keeps coming out. Ive closed both iso valve on the rad and im putting the inhibitor through the top screw. What am i going wrong / not doing?
     
  7. mickyg

    mickyg

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    DO NOT mix them .
     
  8. onlyfitidealboilers

    onlyfitidealboilers

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    drain the rad first :idea:
     
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  9. fazedup71

    fazedup71

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    Am tickled :D :D
     
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  11. expertgasman

    expertgasman

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    FFS
     
  12. creative101

    creative101

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    FFS?
     
  13. bengasman

    bengasman

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    Why is that Mick?
     
  14. mickyg

    mickyg

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    bad things can happen. Some you mix and nothing happens, but certain combinations produce some odd results. One such case was I think fernox MB1 and possibly sentinel or salamander perhaps, long time ago anyway , but what happened was some odd jelly like stuff was produced in the header tank and blocked up the cold feed and stuffed the pump. I've heard similar cases which is why you should never mix if possible, and why manufacturers advise the same as a disclaimer.
     
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  15. bengasman

    bengasman

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    Never knew this, so I'll have to keep an eye on when adding to unknown situation. I must say that I trust fellow engineers' experience more than manufacturers' "advice" in this case.

    I may be able to think of a non-technical reason why they would say that.
    ;)
     
  16. D_Hailsham

    D_Hailsham

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    He may be a boiler "expert", but his reply reminds me of one definition of an "expert": X is the unknown quantity; a "spurt" is a drip under pressure ;)

    So let's see if we can be more helpful. :)

    If you want to put the inhibitor into the system via the radiator, the water in the rad must have somewhere to go to - otherwise there will be no space for the inhibitor. By closing both rad valves you have blocked off all routes out of the rad - apart from the one you are using to insert the inhibitor - so the inhibitor cannot enter the rad. Result: a puddle of inhibitor on the floor.

    How to do it will be explained in the inhibitor instructions. Did you bother to read them??
     
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