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Old Asbestos Containing Storage Heaters.

I repaired an old storage heater today, and after further research I found this list of storage heaters that do and do not contain asbestos.

http://www.storageheaters.com/asbestos-list.htm


Z.
  • I'm unsure about the validity of that list. I asked Dimplex about one of their storage heaters, and they assured me that it was manufactured after they stopped using asbestos, yet the model number is not in the list. Probably better to ask each manufacturer as each heater is encountered.


    F

  • Farmboy:

    I'm unsure about the validity of that list. I asked Dimplex about one of their storage heaters, and they assured me that it was manufactured after they stopped using asbestos, yet the model number is not in the list. Probably better to ask each manufacturer as each heater is encountered.


    F




    Yes better safe than sorry. I must admit that most of the storage heaters that I have installed or opened up when fault finding have had glass fibre as internal insulation, sometimes as loose sheets other times encased in a small packet. They are very dusty things when opened so a face mask is a wise precaution, because storage heaters draw in dust due to convection currents.  I once took out some warm storage heater bricks and placed them on a customer's carpet whilst replacing a long storage heater spiral element. Because the bricks were warm they "ironed" rectangular patterns into the customers carpet. The customer was not pleased at all.


    The heater that I looked at yesterday was an old Unidare model from the '70s I believe. The long spiral ni-chrome element was of very solid construction using heavy gauge wire, much beefier than others that I have see like Dimplex. There was a break at the neutral end of the element and a blob of metal where the wire had melted at the "cold tail". If the blob was of melted ni-chrome it would have had to reach a very high temperature to melt, about 1,400 deg. Celsius I believe.  I added a new cold tail using a porcelain connector. It is not so easy to obtain glass fibre sleeving these days. Screwfix does not stock it.


    Z. 


  • It is not so easy to obtain glass fibre sleeving these days. Screwfix does not stock it.



    This kind of stuff: https://uk.rs-online.com/web/p/cable-sleeves/6681245/?


       - Andy.

  • Zoomup:




    Farmboy:

    I'm unsure about the validity of that list. I asked Dimplex about one of their storage heaters, and they assured me that it was manufactured after they stopped using asbestos, yet the model number is not in the list. Probably better to ask each manufacturer as each heater is encountered.


    F




    Yes better safe than sorry. I must admit that most of the storage heaters that I have installed or opened up when fault finding have had glass fibre as internal insulation, sometimes as loose sheets other times encased in a small packet. They are very dusty things when opened so a face mask is a wise precaution, because storage heaters draw in dust due to convection currents.  I once took out some warm storage heater bricks and placed them on a customer's carpet whilst replacing a long storage heater spiral element. Because the bricks were warm they "ironed" rectangular patterns into the customers carpet. The customer was not pleased at all.


    The heater that I looked at yesterday was an old Unidare model from the '70s I believe. The long spiral ni-chrome element was of very solid construction using heavy gauge wire, much beefier than others that I have see like Dimplex. There was a break at the neutral end of the element and a blob of metal where the wire had melted at the "cold tail". If the blob was of melted ni-chrome it would have had to reach a very high temperature to melt, about 1,400 deg. Celsius I believe.  I added a new cold tail using a porcelain connector. It is not so easy to obtain glass fibre sleeving these days. Screwfix does not stock it.


    Z. 


     




    That's a downer about the carpet - couldn't help chuckling when I read it - kudos for admitting it!


    Interesting you mention the tail and porcelain connector. I asked a heater manufacturer about a modification that had been made in one of their heaters by an installer some years ago and the manufacturer said that if anything negative happened with the heater, such as a fire, they would have nothing to do with it because the heater had been changed from their original design. So, do you make a problem for yourself by adding/altering it.


    F

  •  I once took out some warm storage heater bricks and placed them on a customer's carpet whilst replacing a long storage heater spiral element. Because the bricks were warm they "ironed" rectangular patterns into the customers carpet. The customer was not pleased at all.

    Crikey, I hope you were wearing asbestos filled gloves or using industrial sized fire tongs!

    You might suggest that the client replaces the carpet with natural fibered material


    Legh


  • AJJewsbury:




    It is not so easy to obtain glass fibre sleeving these days. Screwfix does not stock it.



    This kind of stuff: https://uk.rs-online.com/web/p/cable-sleeves/6681245/?


       - Andy.

     




    Yep, that kind of stuff. I'll see if my a/c is still operative at R.S.


    Z.


  •  I asked a heater manufacturer about a modification that had been made in one of their heaters by an installer some years ago and the manufacturer said that if anything negative happened with the heater, such as a fire, they would have nothing to do with it because the heater had been changed from their original design. So, do you make a problem for yourself by adding/altering it.


     



     




    The heater is made of steel, glass fibre and bricks...all non combustible. The thermal safety cut out is still intact. I told the owner's wife to stop putting things on top of the heater to dry them. The makers have probably gone out of business. The guarantee expired about 45 years ago. I can't see much of a fire risk. I had a phone call this morning. The repaired heater is working well.


    Z.


     

  • Former Community Member
    0 Former Community Member
    LoL - go, Z - sticking it to the man, one porcelain connector at a time ?


    OMS

  • Legh Richardson:



     I once took out some warm storage heater bricks and placed them on a customer's carpet whilst replacing a long storage heater spiral element. Because the bricks were warm they "ironed" rectangular patterns into the customers carpet. The customer was not pleased at all.

    Crikey, I hope you were wearing asbestos filled gloves or using industrial sized fire tongs!

    You might suggest that the client replaces the carpet with natural fibered material


    Legh

     

     




    The storage heater and carpet owner has long gone to that warm Great Storage Heater Lounge in the sky.


    Z.


  • OMS:

    LoL - go, Z - sticking it to the man, one porcelain connector at a time ?


    OMS




    Well if a porcelain connector was good enough for the main heat resisting flex supply  connection as installed by the makers, then it's good enough for me with my repair..


    Z.