Cold water running hot

linmal
linmal Forum Participant Posts: 21
edited March 2018 in Caravans #1

Hi,have a 2016 Lunar Clubman CK fitted with Alde heating system just wondering if anyone has the same problem with cold water, when turned on it tends to run really hot and have to run about a litre of water off before it runs cold, thanks in advance for any replies.

Comments

  • JCB4X4
    JCB4X4 Forum Participant Posts: 466
    100 Comments
    edited March 2017 #2

    My guess is the cold supply pipe has been run alongside/over a Hot Central Heating pipe for some distance and the heat is being transferred.  

  • Simon100
    Simon100 Club Member Posts: 666 ✭
    500 Comments 100 Likes
    edited March 2017 #3

    As suggested above, it will be because the hot and cold water pipes run alongside each other and there is heat transference. It happens in my house as well!

  • linmal
    linmal Forum Participant Posts: 21
    edited March 2017 #4

    Thanks Guys, checked the pipes and as you say both pipes fastened together was going to try putting some insulation between but too tightly fastened, Heyho!

     

  • JCB4X4
    JCB4X4 Forum Participant Posts: 466
    100 Comments
    edited March 2017 #5

    linmal,

    Would it not be possible to purchase a longer length of Cold Supply pipe and re-route it away from the heat source?

  • linmal
    linmal Forum Participant Posts: 21
    edited March 2017 #6

    Hi, problem is too much alteration could invalidate the warranty

  • JCB4X4
    JCB4X4 Forum Participant Posts: 466
    100 Comments
    edited March 2017 #7

    Plan ‘B’

    1) Disconnect the offending ‘Cold Supply Pipe’ at both ends but leave it in-sit u.

    2) Install longer, ‘Cold Supply Pipe’, re-routed away from the heat source.

    3) If a Warranty Claim situation arises

    a) Remove pipe; as in ‘2’ above

    b) Reconnect pipe: as in ‘1’ above

    Plan 'C'

    Sorry!!  but I haven't really got one, other than to  'Live with it'

     

  • commeyras
    commeyras Club Member Posts: 1,853 ✭✭✭
    1000 Comments
    edited March 2017 #8

    Why not get dealer to sort it out under warranty!

  • 19Gra40
    19Gra40 Forum Participant Posts: 49
    edited April 2017 #9

    I have the same problem. I think the water is too hot for transfer between hot an cold pipes. I notice the hot tank is fed by the cold feed via a t piece as it passes the tank to the cold taps. I think it is drawing hot water from the tank as it passes . Hope this makes sense.

  • JCB4X4
    JCB4X4 Forum Participant Posts: 466
    100 Comments
    edited April 2017 #10

    Indeed I can see the possibility of some siphoning taking place at this point and think that the occurrence would depend to some extent on the particular installation. Having looked the diagrams and parts availability for this boiler, I can see no provision for a non-return valve being fitted at cold inlet in the boiler itself. However for systems fitted with an on-board fresh water tank an Alde JG Non-Return Valve is available. 

    See:  http://www.alde.co.uk/alde-compact-products.php?itemCat=alde 3020 compact system for details.

    This indicates that in certain circumstances back-flow or siphoning can occur.

  • IanH
    IanH Forum Participant Posts: 4,708
    1000 Comments
    edited April 2017 #11

    We have the same thing in our bathroom at home.

    In the caravan, I wouldn't worry about it - never drink water from the tap and it could help with stopping pipes freezing in the winter.

  • linmal
    linmal Forum Participant Posts: 21
    edited April 2017 #12

     Thanks JCB4X4, have booked the caravan into the dealers to be checked will point this out to them to seeif non return vcalve fitted but you would have thought a company such as Alde would have foreseen this thanks again

  • Navigateur
    Navigateur Club Member Posts: 3,880 ✭✭✭✭✭
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    edited April 2017 #13

    Just use the hot water to wash you hands before doing whatever you are going to do with the cold.

  • Chacombegirl
    Chacombegirl Forum Participant Posts: 2
    edited July 2017 #14

    Hi Linmal

    did you get this sorted? We collected a new lexon 4 weeks ago and seem to have the same problem. 

    From reading thread, I understand likely to be pipes close together, but interested in what your dealer had to say?

    TIA :)

  • linmal
    linmal Forum Participant Posts: 21
    edited July 2017 #15

    Hi Chacombegirl,

       we took it to the dealer also took the prited replies and diagrams he said he could'nt understand it told him in myopinion it needed non return valve fitting picked it up later and was told the pressure switch was fitted wrong way round and that the problem seemed to be solved, however have been away twice since and it still seems to be doing it, so as it's a hour and a half round trip to drop it off another hour and half to pick it up we just have  to waste about a litre of water when we want it cold!

  • Trini
    Trini Forum Participant Posts: 429
    edited July 2017 #16

    linmal, dont let 'them win'.

    If the same dealer does the servicing for you wait until then and tell them to sort it out save time/fuel.

  • linmal
    linmal Forum Participant Posts: 21
    edited July 2017 #17

    Hi Trini,

      no it's not the same we take it to a approved workshop a couple of miles away because of the distance.

  • Chacombegirl
    Chacombegirl Forum Participant Posts: 2
    edited July 2017 #18

    Thank you Linmal. 

    We'll see what our dealer has to say and, if any different response to that which you got, will let you know.

    Happy caravanning :)

  • Merve
    Merve Forum Participant Posts: 2,333
    1000 Comments
    edited July 2017 #19

    Are these pipes not held together with zip ties? If so, cut zip ties, place insulation between pipes, replace zip ties. ......or am I missing something?

  • linmal
    linmal Forum Participant Posts: 21
    edited July 2017 #20

    Thanks Chacombegirl

  • linmal
    linmal Forum Participant Posts: 21
    edited July 2017 #21

    Hi Merve

       It's not just heat transference it's really boiling hot I think it's back syphoning out of the heater explained this to dealer and suggested fitting non return valve but hey what do we caravanners know???

     

  • hitchglitch
    hitchglitch Forum Participant Posts: 3,007
    1000 Comments
    edited July 2017 #22

    Given the size of the pipes and the length that they are touching it seems highly unlikely to me that the close proximity is causing the problem. One litre of water is a heck of a lot to have to drain off. I suspect a more fundamental problem with back flow or similar.

  • linmal
    linmal Forum Participant Posts: 21
    edited July 2017 #23

    Hi Hitchglitch,

      Isuggested this to the dealer also to fit non return valve but he did'nt listen  or thought he knew better.

     

  • crusader
    crusader Forum Participant Posts: 299
    100 Comments
    edited July 2017 #24

    Here is a off the cuff idea use the heat reflective foil like the type you put behind a domestic radiator cut into strips and insert between the pipes refective side towards the hot water pipe or you could try tin foil shinny side towards the hot water pipe. It's worth a try, although I must say,  I don't think seperating the pipes a little would affect the warranty as you would'nt be disconnecting  them

  • linmal
    linmal Forum Participant Posts: 21
    edited July 2017 #25

    As i said before it is not heat transference from the hot pipe, the water is boiling hot not just warm.

  • linmal
    linmal Forum Participant Posts: 21
    edited March 2018 #26

     Hi Chacombegirl

        Hope you get this post re. cold water, finally got the dealer to fit a nonreturn valve been away this last weekend and Hey Presto problem solved, had to explain to them that the valve needed fitting in the cold water inlet pipe to the heater  just before the drain tap otherwise the heater tank would not drain, hope you find this helpful and anyone else having the same problem.

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