Hymer B654 (1990(G)) Heating

davekes

Guest
Hi,
1st post.

We are picking up a Hymer B654 (old 1990 model) in a couple of days and are planning to do some wild winter camping up in Scotland this year. We have 2 daughters aged 6 and 18 months so we need to make sure that the MH will be warm enough.
I believe that it has blown air heating, Can anyone enlighten me on the workings and efficiency of this (ie. gas? 12v?).
We hired a large RV in California last year and the heating was blown through some vents with a thermostat for control and we left it on all night.

I noticed that the Hymer has a radiator mounted next to the fridge/hob etc, Will this be a similar system and can we leave it on all night?

Oh and how warm is it?

Thanks
Dave
 
It will be gas, Truma, but not 12v. Some heaters have a 240v facility, just for use on when on hook ups on sites - no good for you. Trumas are pretty good in my experience. Can sometimes take a little while to heat the place up though.
 
Hi,

Yep I think you are right - I've done some googling and attached a photo of the heater.

So is this blown air then?? I did ask the current owner and he has assured me that it is. Does it have a fan that runs off leccy?

Can it be left on and will it keep the the van at around 18degreesC in the middle of a Scottish winter?

I have a dragon oil filled heater that we could use on site but we ideally want to be wild camping.

Thanks
Dave
 

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I'm pretty sure it would be blown air. The air is heated by gas, the distribution fan runs off 12V

Welcome to Truma Germany

I don't know the model number for that vintage. Carver also made heaters but I'm pretty sure it would be a Truma.

There are some Hymer experts around who could probably tell you straight off ;)
 
Firefox said:
I'm pretty sure it would be blown air. The air is heated by gas, the distribution fan runs off 12V

Welcome to Truma Germany

I don't know the model number for that vintage. Carver also made heaters but I'm pretty sure it would be a Truma.

There are some Hymer experts around who could probably tell you straight off ;)
Click to expand...

It is probably the Trumatic SL3002 fitted with a Trumavent kit.

I have one in my Hymer S700 at the rear and it works fine. We find we can leave it on overnight on 3 to 5 without the blowers and it is warm enough. This not only heats the area by convection but the air is blown through vents to the rest of the interior and bathroom.

This heater has a battery 2 x AA which should be replaced at the beginning of each season. It is positioned below the metal cowl to the left as you face the heater. It swings out and must be pushed firmly back to make contact. This powers the auto ignition system. The blower control is on the wall in my van near the sink and is a small brown box with a switch and light on it.

The S700 also has a heater at the front under the table as well. That is a blown air only job, a Trumatic-e 2800 which also ducts air to other parts of the van

If you have one of these beware that water can get in through the exhaust on the wall and lies in bottom of the heater (no drain fitted). This happend to me last year and we had to replace the whole unit as the burners etc were damaged by this. Joan blames me for using a hose on that area of the van when washing it without putting the winter cover on the exhaust

I replaced it with a larger version of the same heater the 4000 and that can get to hot at times.

If you need info on any of these heaters I have the manuals.

I also suppliment the heating with a 500 watt heater on the windscreen area in winter when we are on hookup.
This is a cold spot even with "Silverscreens" fitted. It stops condensation on the glass as well. I noticed a cold draft when sitting at the table with the passenger seat swung around without the heater.

I hope this helps

John
 
It's a Trumatic of some sort - a model number would help identify the heat output.

We had a Trumatic SL 5002 in our old FFB 660 which is the same sort of size as your Hymer 654, it kept us warm at -12C on our way through Europe one winter, no problem. We left it set on 1 without the fans on at night, I don't think we ever needed to set it above 3 or 4 to keep us warm. It did use up a 13kg cylinder of gas in just over a week though...

Instruction for all this type of heater here: http://www.truma.com/_anweisungen/Truma-Katalog/gb/trumatic_s/s_heiz_ues.html

AndyC
 
Last edited:
Great info there guys, thanks very much!
Looking forward to picking it up tomorrow night now!
 
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