Hymer S820/740 heating

[oldieish]

Two questions:

a) can the underfloor heating be on whilst driving (presumably on electric, not gas)

b) does the blown air heater boiler require water in it when being used solely as a space heater

 

[paddymcc]

a) yes - if you have an automatic crash shut off valve on the gas system in the van it can be used on gas. I doubt it you can use it on electric as it will take 800w or 1600w. This generally requires hook up. This is assuming you have a Truma system If you have Alde the someone else may help.
b) the Truma. apparently doesn't require a full hot water boiler for the blown air to work. (having blown air suggests the system is Truma not Alde by the way)

 

[CazPaul]

You mean Truma Aquatherm wet system, we didn't use it much it's not as effective as an Alde and lots of reports of it being complicated and difficult to repair.
A. No
B.No
Great built vans those though.

 

[oldieish]

Could it be run from an inverter? Two leisure batteries recharging from solar and engine whilst driving.

 

[CazPaul]

Could it be run from an inverter? Two leisure batteries recharging from solar and engine whilst driving.

Possibly a big inverter, not sure why you would want to though, we never felt the need. Just stick the Truma blown air on when you arrive it soon warms up, you need a few hours for the Truma Aquatherm to get warm.
Ours often tripped the EHU the wet Aquatherm system as I say we didn't use it much at all.
Which one do you have S820 or 740?

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[oldieish]

Seen half-a-dozen this year, mixture of 830s and 740s. Some good at a realistic price, sell quickly; some less good. Off to see another this weekend. Impressive vans. I would want to take full,advantage of their special features. Truma blown-air is a universal heater. Other makes (Carthago, N&B, Burstner, Rapido) use the Alde system. Unsure which way to go. I've a a B644G at present, so it'll be a sophisticated upgrade.

 

[CazPaul]

Seen half-a-dozen this year, mixture of 830s and 740s. Some good at a realistic price, sell quickly; some less good. Off to see another this weekend. Impressive vans. I would want to take full,advantage of their special features. Truma blown-air is a universal heater. Other makes (Carthago, N&B, Burstner, Rapido) use the Alde system. Unsure which way to go. I've a a B644G at present, so it'll be a sophisticated upgrade.

Just remember, the 6 tonne version is the one you want as not enough payload on the 416.

Also the Mercedes 2.7 cdi 156bhp is not powerful enough on anything but downhill to power it. Full auto is desirable, they didn't do the Sprintshift on the 6 tonne so all autos will be full torque converter auto.

 

[oldieish]

This weekend's is a 740/616 with a manual box. Also interested in an early 2000s N&B Flair.

 

[CazPaul]

This weekend's is a 740/616 with a manual box. Also interested in an early 2000s N&B Flair.

I would prefer the Flair if on an Iveco, although both great build quality.
The Flair will have the Alde system too.

 

[oldieish]

Iveco manual. I would prefer an auto, however they seem rather rare. What van have you?

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[funflair]

Iveco manual. I would prefer an auto, however they seem rather rare. What van have you?

The IVECO Agile auto box is quite rare on pre 2007 vans and does not have the best reputation, given the choice I would have manual.

Martin

 

[CazPaul]

Iveco manual. I would prefer an auto, however they seem rather rare. What van have you?

We have a 6.5metre Concorde A class now, 2005 Iveco 3 litre manual, 4900kg just uprated it, same running gear as @funflair, the power is incredible goes uphill in 6th.

 

[oldieish]

Friends have a Concorde Concerto, nigh on 8 metres. Excellent van. I'd happily have a Concorde, although a little shorter would be fine. Apropos the Mercedes 2.7, can they be remapped to give better torque/power?

 

[CazPaul]

Friends have a Concorde Concerto, nigh on 8 metres. Excellent van. I'd happily have a Concorde, although a little shorter would be fine. Apropos the Mercedes 2.7, can they be remapped to give better torque/power?[/QUOTE


Ours is a Concerto but smaller model, yes the Merc can be remapped.

 

[jongood]

Could it be run from an inverter? Two leisure batteries recharging from solar and engine whilst driving.

If you want this feature, you need something fitted with alde with a heat exchanger. We have it on our arto, brilliant in winter. Flairs and most Concorde should have it.

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[oldieish]

I have the impression that while the Hymer Truma Aquatherm is good most contributors feel the Alde system is better.

 

[Vic. Parsons.]

I have the impression that while the Hymer Truma Aquatherm is good most contributors feel the Alde system is better.

I can't speak for the Alde system but we have had no problems with our Aquatherm in our S740 (on a 616 ?), it takes between 30 to 45 minutes for the room to start heating but barefoot is possible after 25 minutes.
It wasn't that efficient when we first bought the van because the previous owner - owners never renewed the 50/50 mix of glycol/distilled water. After I replaced it, it worked a charm.