Water tank drain-down for winter

Liz Daros
Liz Daros Forum Participant Posts: 4
edited October 2016 in Caravan & Motorhome Chat #1

We are new to motorhoming and so this will be the first winter where we need to drain the water tanks to avoid frost damage and bacterial build up over winter.

I have looked at 'floe' as an option but it seems quite complicated.

I wondered whether other members have used this system or, if not, what other suggestions members might have to ensure the water is fully drained and the system not damaged? 

Comments

  • Smivers
    Smivers Forum Participant Posts: 13
    edited October 2016 #2

    Hi Liz I use the floe on my caravan and it is very simple you need a 12 volt compressor and it removes about a ltr from the pipes

  • young thomas
    young thomas Forum Participant Posts: 11,356
    1000 Comments
    edited October 2016 #3

    open the fresh tank drain and empty it.

    open the hot water boiler drain and this will pump out the ten ltr in your combi's tank.

    open the kitchen, washroom and shower taps to a position between hot and cold, the remaining water will drain out, you can even lower the shower head to aid draining....

    there may also be water in the filter close to the combi, this can be emptied to avoid damage from trapped water that freezes....

    once you've done it once it will seem far more simple than it reads....Wink 

    good luck...

  • AutoAddict
    AutoAddict Forum Participant Posts: 114
    edited October 2016 #4

    Hi Liz I use the floe on my caravan and it is very simple you need a 12 volt compressor and it removes about a ltr from the pipes

    Same here, have managed to get nearly 2ltrs out of the pipes, superb bit of kit.

  • Liz Daros
    Liz Daros Forum Participant Posts: 4
    edited October 2016 #5

    Thank you everyone, very helpful!  Think I shall have to get the kit connected by a proffessional though as don't trust my DIY skills!

  • cyberyacht
    cyberyacht Forum Participant Posts: 10,218
    1000 Comments
    edited October 2016 #6

    I pump out my system by connecting my rusty, I mean trusty, footpump to the water inlet. Pump it up to about 15 psi and then open the taps sequentially. You don't need expensive kit if you already have a pump. Actually did mine yesterday.

  • young thomas
    young thomas Forum Participant Posts: 11,356
    1000 Comments
    edited October 2016 #7

    CY, the OP's MH wont have an inlet like a caravan does...the pressure for the water comes from the inline pump between the water tank and the van supply pipe...

    AFAIK, its not easy to pressurise the system in the way you describe....

    i have a separate waste tap situated at the lowest point of the van which allows the excess fresh water to drain once the tank has been drained...

  • Liz Daros
    Liz Daros Forum Participant Posts: 4
    edited October 2016 #8

    Right, that makes sense, BB.  Have looked at the video on line re floe and checked where my pump is; does not look simple. Think I will try your approach before doing anything else.

    Again, thanks for your help everyone!  

  • Wildwood
    Wildwood Club Member Posts: 3,581 ✭✭✭✭
    1000 Comments Photogenic
    edited October 2016 #9

    Personally I would drain the system on the last site you visit. Open all taps and the shower to halfway between hot and cold and blow down them to clear any water trapped in them. You then drive home with everything open and the trip should clear any remaining
    water.

  • young thomas
    young thomas Forum Participant Posts: 11,356
    1000 Comments
    edited October 2016 #10

    again, the OP has a MH which may still be carrying many, many litres of water.....not like a caravan with (apart from the aquaroll) a virtually empty system...

    yes, a MH could dump their fresh water when they dump their grey, but this would mean manouvring the van a bit to get over the CC drain with two different van outlets....

    however, when i get home, i can pull the plug on the fresh wothout anyone tutting over a MH dumping a large quantity of water...Happy

  • EasyT
    EasyT Forum Participant Posts: 16,194
    1000 Comments
    edited October 2016 #11

    Not necessarily so Wildwood. The piework on my previous van had a similar layou to present van. On site after laying van up from end of September until mid December I got on site to find no water as there was a freeze in both hot and cold pipes. Never happened
    again as I found an additional drain on both hot on cold on the pipe run. Present van does not have this and so I am more fussy to blow any water out

  • Deedlydave
    Deedlydave Forum Participant Posts: 16
    edited October 2016 #12

    Thanks to Liz for original post as a quick search has saved me asking the same thing (also new to MHing).

    My handbook instructs disconnecting pipes at HW boiler which, as a layman, I am reluctant to do as I'd consider constant tinkering every time we leave van unused for a few days over winter will loosen the seal.

    I can't find a drain on my clean water tank, which struck me as being the simplest solution to draining probem, so am also considering the floe system (the power of advertising in the magazine!).

    At moment I've run pump and drained what I can through taps/shower but know there will be a residue sitting somewhere.

    We (the van is ours, while the tinkering is my domain) have a Chausson 510 so if anyone can offer model specific idiot guidance I'd welcome that!

  • geordie01
    geordie01 Forum Participant Posts: 108
    edited October 2016 #13

    I drop remaining fresh and grey at the MH service point openthe boiler  drain and drive hame with it open and all taps in the van open this clears remaining water out of system. I the nkeep an eye on the weather when it it is storage and if it looks like it will be really cold for a time I go and remove the pump and bring it home.It only takes 5 mins to remove and replace. Done this for last  11 years no problems.

  • young thomas
    young thomas Forum Participant Posts: 11,356
    1000 Comments
    edited October 2016 #14

    Dave, i cant answer your specific question but old this thread from MMM forum highlights that certain Chausson models required unscrewing a bung underneath the tank...

    not really satisfactory, but also spme suggestions for modifications to make more user friendly...

    http://forums.outandaboutlive.co.uk/forums/Motorhomes/Motorhome-Matters/Chausson-Flash-04-freshwater-drain-tap/24878/

  • QFour
    QFour Forum Participant Posts: 442
    edited October 2016 #15

    Our last Pilote MH had a bung in the tank just like you get in a sink but smaller. Open inspection cover on top of tank and plunge hand into cold water. Swift had a tap on the tank that leaked. New Laika has a drain tap inside that lets out everything apart
    from 20 ltrs and then another one that lets out everything. Also a frost sensor for the boiler.

  • Deedlydave
    Deedlydave Forum Participant Posts: 16
    edited October 2016 #16

    Thanks for replies and for useful link - I'll now get vehicle into drive so I can crawl round underneath and see if there's any handy drain.

    For info, after my post yesterday I contacted dealer we bought from who also are listed as installers of the floe system, just to get an idea of installation costs. The chap I spoke to said they had only ever fitted one and he advised just opening the taps,
    after draining and emptying as much as you can before leaving site, and then just let the journey home shake the remainder out.

  • Lyke Wake Man
    Lyke Wake Man Forum Participant Posts: 238
    edited December 2016 #17

    I have a 7.5 c.f.m. compressor I put my blow jet on the pipe  and blow the pipes out

  • ChrisBogg
    ChrisBogg Forum Participant Posts: 3
    edited December 2016 #18

    I recently fitted Floe to my motor home, very simply done in my view. Basically a cut off valve is fitted in line between the water tank & pump. Then between the cut off valve & pump the air injector is also fitted in line. All connections are supplied & are simple push fit. A. Search on You Tube for Floe will find a 20min video which explains the fitting & how to use the product. I have only used it twice, but have been impressed with the amount of water expelled from the pipes after going through the normal drain down procedure I previously used, peace of mind is the result. In my view a worthwhile investment.

  • tamus
    tamus Forum Participant Posts: 4
    edited October 2020 #19

    https://www.amazon.co.uk/KKmoon-Universal-Connector-Adapter-Multifunction/dp/B07W1K2TDJ/ref=asc_df_B07W1K2TDJ/?tag=bingshoppinga-21&linkCode=df0&hvadid=&hvpos=&hvnetw=o&hvrand=&hvpone=&hvptwo=&hvqmt=e&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=&hvtargid=pla-4584070148770260&psc=1

    Hi, I recently purchased one of these, I attach a piece of hose, open the drain valve, then the taps one at a time and blow through to get any remaining water out the system.  This will only be compatible if you have round tap spouts, but there may be other adapters that would be compatible.  I was a little reluctant to pressurise the system using the Floe system.

     

  • Tigi
    Tigi Forum Participant Posts: 1,038
    500 Comments
    edited October 2020 #20

    I just open taps and drains prior to leaving last campsite and drive home never had a problem.

  • ABM
    ABM Forum Participant Posts: 14,578
    1000 Comments
    edited October 2020 #21

    Tigi & Tamus  the thread is from December 2016 !!