1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Legionnaire's in solar panels - a myth to deter the DIYer!

Discussion in 'General Discussion' started by RigidRaider, 7 Sep 2010.

  1. RigidRaider

    RigidRaider

    Joined:
    9 Aug 2006
    Messages:
    1,727
    Thanks Received:
    68
    Location:
    Lancashire
    Country:
    United Kingdom
    Been asking around for bits for a DIY solar panel and on three occasions now retailers have sucked their teeth and muttered "Ooooh.... Legionnaire's disease!" at me. WTF is this paranoia?

    Let's start with the primary (panel to coil) circuit: how is a bacterium supposed to enter then grow in a closed system containing ethylene glycol and antioxidant and sometimes being heated to 80 or 90 degrees C? In any case this system is completely separated from the storage cylinder.

    Next, the storage cylinder: this is fed with treated water from the header tank and the family draws off water every day, probably replacing the entire contents of the cylinder a couple of times a day with fresh. The cylinder is closed and the water heated to 60 degrees C so how is a legionnaire's bacterium supposed to get into it then grow?

    Next, the most stupid part of the argument: the pipework and shower head downstream of the cylinder: of all the millions of households where showers are in regular or even irregular use, has there ever been a proven case of a householder catching Legionnaire's from the shower? And why would solar heated water increase the risk if such a risk existed?

    Even assuming you go away for two weeks and leave tepid water at 20-30 degrees C in the cylinder, at which temperature bacteria could possibly thrive, how does the Legionnaire bug get in? Has there ever been a case of somebody getting back from holiday, taking a cool shower then catching Legionnaire's?

    As far as I can see this is another myth being pedalled by the emerging solar industry to prevent enthusiastic householders and DIYers from building then installing simple systems at a fraction of the cost of their off-the-shelf systems. And from some of the systems I've seen sold to gullible householders, I can quite understand why this "industry" would want to protect its profits.
     
    • Thanks Thanks x 1
  2. Sponsored Links
  3. foxhole

    foxhole

    Joined:
    14 Mar 2006
    Messages:
    18,014
    Thanks Received:
    2,065
    Location:
    Kent
    Country:
    United Kingdom
    Southwark park in Rotherhithe had a case of Legionnaires in the changing room shower heads of the parks sports facilities.Put down to a lack of maintenance/hygiene of the buildings water tanks.
    Would not have thought a domestic shower would suffer due to there frequent use.
     
  4. merlin50

    merlin50

    Joined:
    10 Jul 2010
    Messages:
    1,749
    Thanks Received:
    127
    Location:
    Cornwall
    Country:
    United Kingdom
    Motorists risk catching legionnaires’ disease from the water in windscreen wash bottles, the Government’s health experts are warning :eek:
     
  5. DIYDANDY

    DIYDANDY

    Joined:
    14 Aug 2010
    Messages:
    410
    Thanks Received:
    17
    Location:
    Berwickshire
    Country:
    United Kingdom
    Whilst the disease can be present in many places it can only contaminate a human if the droplets of water containing it are so small that they can be breathed directly into the lung.

    Shower heads, car water bottles and solar panels are highly unlikely to produce a mist fine enough to find its way into the lung.
     
  6. merlin50

    merlin50

    Joined:
    10 Jul 2010
    Messages:
    1,749
    Thanks Received:
    127
    Location:
    Cornwall
    Country:
    United Kingdom
  7. Mickymoody

    Mickymoody

    Joined:
    8 Mar 2010
    Messages:
    3,336
    Thanks Received:
    55
    Location:
    Manchester
    Country:
    United Kingdom
    Sounds like a surefire way of getting legionairres disease to me,
     
  8. DeltaTea

    DeltaTea

    Joined:
    7 Sep 2010
    Messages:
    15
    Thanks Received:
    2
    Location:
    Glasgow
    Country:
    United Kingdom
  9. RigidRaider

    RigidRaider

    Joined:
    9 Aug 2006
    Messages:
    1,727
    Thanks Received:
    68
    Location:
    Lancashire
    Country:
    United Kingdom
    The dangers of ill-maintained open air conditioning systems on large buildings are well understood. How can I catch Legionnaire's disease from a solar panel? I'm keen to know so that I can take precautions against it.
     
  10. Sponsored Links
  11. DeltaTea

    DeltaTea

    Joined:
    7 Sep 2010
    Messages:
    15
    Thanks Received:
    2
    Location:
    Glasgow
    Country:
    United Kingdom
    Sorry, but if you fail to understand the dangers, why are you fitting/altering a HW system. Also do you have a Part G ticket to alter your system?? People have also been killed with poorly installed HW systems, you clearly don't understand this.
     
  12. maltaron

    maltaron

    Joined:
    20 Apr 2007
    Messages:
    1,601
    Thanks Received:
    97
    Location:
    Cornwall
    Country:
    United Kingdom
    This is scaremongering again, 345 cases in a year is barely worth mentioning. You are vastly more likely to get food poisoning from poorly stored processed food .
     
  13. DeltaTea

    DeltaTea

    Joined:
    7 Sep 2010
    Messages:
    15
    Thanks Received:
    2
    Location:
    Glasgow
    Country:
    United Kingdom
    Yes well, i've tasted your wife's nosh mate & I can understand your concern. Nice new Bedroom carpet by the way!!
     
  14. RigidRaider

    RigidRaider

    Joined:
    9 Aug 2006
    Messages:
    1,727
    Thanks Received:
    68
    Location:
    Lancashire
    Country:
    United Kingdom
    Go on then, educate me. I'm just a muppet DIYer after all.
     
  15. DeltaTea

    DeltaTea

    Joined:
    7 Sep 2010
    Messages:
    15
    Thanks Received:
    2
    Location:
    Glasgow
    Country:
    United Kingdom
    I think you'll find DaftyDIYer is the term??

    Here, don't knock it mate, the DaftyDIYer keeps two of our jobbing Plumbers in a job by the way.........Kaching, Kaching!!!
    Strange though, it's always the longsuffering wife that phones up, sometimes in tears!! While dafty, is down the Pub or blaming a cowboy for the lash-up, but hey I'm not knocking it!!
     
  16. kevplumb

    kevplumb

    Joined:
    18 May 2004
    Messages:
    23,712
    Thanks Received:
    925
    Location:
    depends where i get sent
    Country:
    United Kingdom
    keep going puller the clocks ticking :LOL: :LOL:

    i notice you ducked the question (as usual)
     
  17. RigidRaider

    RigidRaider

    Joined:
    9 Aug 2006
    Messages:
    1,727
    Thanks Received:
    68
    Location:
    Lancashire
    Country:
    United Kingdom
    Come on guys, surely you're not dodging the issue? I'm keen to learn from your obvious experience; how can I catch Legionella from a solar panel please? My family's health could be at stake here.
     
Loading...

Share This Page