Alde heating concern (1 Viewer)

Lanerboy

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Aug 3, 2016
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1st time in the new carthago and been traveling for 2 hrs with heating running through the heat exchanger just parked up and lounge,area really warm but bathroom and bedroom area not very warm.

I have just put the heating on via gas whilst parked up but bedroom only Luke warm ours has the high twin beds at the rear and the Alde has a pipe running all the way around the bed with vents but not much heat coming through the vents

On my Rapido we had a separate heating thermostat for the bedroom but can't find one on this vehicle does anyone know if there is one anywhere.

What could be the issue with the rear not getting as warm as the front could the system need bleeding it's not an issue now but could be next winter especially if we are in Scotland or abroad somewhere cold
 

icantremember

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Our Hymer has an underfloor fan which helps circulate warm air to the rear of the moho. This is controlled by a manual switch, which in our case is on the side of one of the single beds.
 
Last edited:

movan

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Bit dense here but just in case it helps, there is another post re Alde heating .. it might be of help to you.

Sorry if it totally different thing ..I don't understand technical bits of motorhome.

It's entitled Truma inet or something by @Russ M
 

funflair

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Does it all work as you would expect it to on gas/elec? in other words is it just on heat exchanger that you notice to issue.

Martin

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Feb 24, 2013
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this is going to sound stupidly obvious, so apologies but no offence intended

you have increased the heating thermostat? if we have driven for an hour or so, on a sunny day especially, our internal temp would be 20+ unless you have now got stat set to higher than that it will not run
 

bigtwin

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Sounds as though part of the circuit is isolated.

Ian
 
Jul 5, 2013
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Our twin bed Hymer allows us to switch off the heating in the bedroom area using a manual valve under the side of one of the beds. Seems like some people (Germans) like cold bedrooms, but not us, so it is left always on.
 
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Lanerboy

Lanerboy

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Hi all

Thanks for all your replies I have left it on full on gas for an hr and it seems to be ok now not sure if it just needed using as this is our first outing and is a new MH

Also it may be that the heat exchanger does not work as well as gas I don't know may be someone can answer that for me

On another note just left the air con on now to try it out been on for half hr and not tripped the hook up yet

Anyway it's 17 degrees now and we are sat outside on the chairs enjoying the sun on a very quiet 5 co site in Chester with huge pitches

Going to set the cadac up now and have a bbq this reminds me why I bought this MH
 
Apr 10, 2010
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Hi,
We have the same bed setup as you; the pipe around the beds is not the best heating system especially as it’s frequently covered by bedding. Most of the heat for the bedroom area seems to come from the radiator under the middle ladder. As far as I know, there is no separate isolation valve.

Regarding the heat exchanger working while driving, the Alde system will only distribute heat while its pump is running. That means either you have to put the thermostat up high, as David said above, or set the pump to run continuously through the Alde control panel.

Hope this helps!

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Jul 5, 2013
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Hi all

Thanks for all your replies I have left it on full on gas for an hr and it seems to be ok now not sure if it just needed using as this is our first outing and is a new MH

Also it may be that the heat exchanger does not work as well as gas I don't know may be someone can answer that for me

On another note just left the air con on now to try it out been on for half hr and not tripped the hook up yet

Anyway it's 17 degrees now and we are sat outside on the chairs enjoying the sun on a very quiet 5 co site in Chester with huge pitches

Going to set the cadac up now and have a bbq this reminds me why I bought this MH
The heat exchanger works like a small radiator on the engine's coolant circuit. The hot engine coolant warms up the heating fluid in the Alde circuit. It produces a lot less heat than the gas burner will.
 
R

Robert Clark

Deleted User
Another thing to consider is that the radiators are connected in serial rather than in parallel.

On our van this means that after having had the boiler running for 45 mins the radiators in the lounge, closest to the boiler are red hot but the ones in the bedroom are only just getting warm. So as such if the engine heat exchanger is fairly low output it could take even longer to heat the rear of the van.
In the winter we tend to put the heating on gas first, then switch over to the heat exchanger once warmed up
 

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