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DISCO4.COM > Camping, Caravanning and Holidays

Alde central heating
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NickJ
 


Member Since: 11 Oct 2010
Location: there's no f in point
Posts: 2137

2006 Discovery 3 TDV6 S Auto Zambezi SilverDiscovery 3
Alde central heating

Apparently the antifreeze in Alde wet central heating needs to be replaced (two years or five years depending upon which one has been fitted). Anyone done it themselves and have a satisfactory way of doing it?  
Post #171062725th Sep 2016 9:29 am
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sputnixb51
 


Member Since: 23 Apr 2013
Location: Morayshire
Posts: 833

Scotland 2014 Discovery 4 3.0 SDV6 SE Tech Auto Corris GreyDiscovery 4

If you have a specific gravity tester then measure it see what protection levels your getting, or a friend/plumber with a spectrograph meter and if good leave it in.If it's the older column Type then drain it from the drainers and blow it through catch the fluid so that you have an idea of the quantity and condition the heat exchanger on the Column type can rot out badly because it is just ferrous metal. Then you need to find the bleed vents on the system usual hidden behind one panel or another if you don't find them then it's virtually impossible to refill the system even though it's open vented in effect. The more modern under seat ones are similar but made of better stuff and usually easier to re prime but you will still need to find the bleed vents.  
Post #171067925th Sep 2016 11:54 am
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Mids Walsall
Posts: 873

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Bonatti GreyDiscovery 3

I've got the same system in our old vanroyce tourer
It is a nightmare to re prime Censored I fitted a grunfos central heating pump in to the radiator system, now I just fill the system switch it on and the pump pushes it round all of it
I go round and bleed the valves done made it a lot easier for me draining it  
Post #171070025th Sep 2016 1:25 pm
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NickJ
 


Member Since: 11 Oct 2010
Location: there's no f in point
Posts: 2137

2006 Discovery 3 TDV6 S Auto Zambezi SilverDiscovery 3

I've read on a caravan forum to pump the antifreeze out with a transfer pump, but a bit concerned about airlocks, not getting it all out etc  
Post #171074825th Sep 2016 3:37 pm
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Dazz360
 


Member Since: 03 Sep 2016
Location: West Mids Walsall
Posts: 873

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Bonatti GreyDiscovery 3



I think this is the pump you mean






This is what I've found for my alde  
Post #171085825th Sep 2016 6:23 pm
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