Antifreeze

Discussion in 'Motorhome Chat' started by Glynn, Oct 15, 2010.

  1. Glynn

    Glynn Read Only Funster

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    Hi,
    Which type of antifreeze is suitable for winterizing the MH, I want it for the truma heater/boiler and the hot/cold water etc.
     
  2. wivvy's dad

    wivvy's dad Read Only Funster

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    Try boat chandlers - anti-freeze for boats
     
  3. scotjimland

    scotjimland Funster Life Member

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    Why not drain down ?
     
  4. Glynn

    Glynn Read Only Funster

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    I prefer to antifreeze it.
     
  5. scotjimland

    scotjimland Funster Life Member

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    well, there are special antifreeze for water systems, but frankly, I think it would be unwise to put any anti freeze into drinking water systems..

    It will be difficult to remove every last drop without blowing out and flushing several times.. more work than simply draining down ..
     
  6. Glynn

    Glynn Read Only Funster

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    How do you go about draining the truma boiler then ?.
     
  7. scotjimland

    scotjimland Funster Life Member

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    They normally have an automatic frost protection drain valve on the fill line under the boiler that drains it when the ambient drops to about + 3c .

    It can operate manually by lifting the knob, to keep it open use a clothes peg.
     
  8. lunarman

    lunarman Funster

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    There should be a valve that looks like the attached picture in the water inlet ( It may be some distance fro the boiler). Lift the lever and the boiler will drain.

    Lunarman
     

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  9. nifty fifty

    nifty fifty Funster

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    how thats for coincedence. names glyn [just one n ] and i have a 705 allso !! and you dont see to many do you ?

    re draindown all we do is open both the tank drain valve and lift the hot water drain tap in same compartment.i have found that opening the taps in centre position allows air in and allows all water to drain out. havent had any problems doing it this way
     
  10. Sundowners

    Sundowners Funster Life Member

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    Hi
    We were discussing this in an RV shop---------They do not like antifreeze in the boiler as it (should have) an annode rod inside, the antifreeze is corrosive and will attack it--------so, drain boiler and isolate it, then antifreeze rest of system if you wish (RV potable antifreeze)
    Nigel
     
  11. pappajohn

    pappajohn Funster Life Member

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    agreed Nigel...you can buy a boiler bypass system (fitted for life) which is a series of valves/taps and pipes to temporarily bypass the boiler for winterizing.
     
  12. Geo

    Geo Trader - Funster

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    Slight correction if I may
    The auto valves normally Push Down to drain and Drop Down when freezing is imminent +3c and cant be re set untill the temp reaches +8c
    The peg trick is to stop it dropping, ie hold it up in the closed position when you don't want it to drain automatically
    At least all those ive come across work that way
    Geo
     
  13. hilldweller

    hilldweller Funster Life Member

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    Add that to LunarMan's lift up valve and that's what we have.

    Glad of this thread, I drained down and had forgotten the manual lift up valve. Now sorted.
     
  14. scotjimland

    scotjimland Funster Life Member

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    senior moment .. :Doh: thanks Geo..
     
  15. Glynn

    Glynn Read Only Funster

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    Where exactly will it drain to ?.
     
  16. scotjimland

    scotjimland Funster Life Member

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    with any luck, ... onto the ground under the van :thumb:
     
  17. Glynn

    Glynn Read Only Funster

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    So I take it there must be a drain pipe going through the floor.
     
  18. scotjimland

    scotjimland Funster Life Member

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    yes, if you look under the van below the valve you should be able to see it ..
     
  19. Glynn

    Glynn Read Only Funster

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    And draining the taps etc ? any good tips.
     
  20. JockandRita

    JockandRita Funster Life Member

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    Yes Glynn,

    Switch off the 12v power to the pump, and then open the taps as previously mentioned, to allow air in and water out. Once all water is drained from the system, close the taps, then you can operate the 12 sytem again, without burning out the pump.

    Some systems have inline drain taps to asisst with draining off.

    I wouldn't recommend the use of an antifreezing agent either.

    Regards,

    Jock.
     

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