Hymer/Truma Heating

[Mark101]

Good morning.

Subscribing member but our first post. We are Mark and Nikki and we purchased a Hymer last year and are (or would like to be when we’re allowed) hooked, we love it.

We have a 1995 (white) Hymer with Truma gas heating, which is extremely efficient and quick to heat water and the van.

Quick question regarding running the heating. The only thermostat options are (hot water), or (hot water and heating). We have drained the camper down so that there is no water in the fresh water tank, taps or water heater. There is no option to just run the heating without the hot water. Now, as there is no water in the boiler - can we run the heating or will that in some way damage the boiler.

Solely gas, no electric heating.

Thank you

 

[Googlebot]

Welcome!

You can run it in mine which is a bit newer. What model Truma is it?

 

[Landy Andy]

A picture of your controls would help

 

[Lenny HB]

Need to know the model number as the earlier ones you couldn't.

 

[Mark101]

I have no idea actually, hadn’t thought about it until I wanted to run the heating the other day. I stopped myself thinking you would never run a dry kettle but then thought but there will be no element, just a burner ??? No idea at all but seems daft if I can’t run heating without being full of water. Thanks for the reply and welcome, Mark

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[Mark101]

I shall get some pics and model number next time I get to the van. Thanks

 

[63720]

In principle yes. If you're van has an automatic frost valve to dump the hot water in freezing conditions how else could you raise the temperature to enable closure without using the heating

 

[Mark101]

 

[Lenny HB]

View attachment 467519

You need to look at the model number on the boiler.

 

[BouncyBoatFolk]

View attachment 467519

The red switch would seem to indicate heating and hot water,or just hot water.
Google the manual for your model boiler, that should tell you.
Certainly on later models it's possible.
Mike

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[gwyntaxi]

Good morning.

Subscribing member but our first post. We are Mark and Nikki and we purchased a Hymer last year and are (or would like to be when we’re allowed) hooked, we love it.

We have a 1995 (white) Hymer with Truma gas heating, which is extremely efficient and quick to heat water and the van.

Quick question regarding running the heating. The only thermostat options are (hot water), or (hot water and heating). We have drained the camper down so that there is no water in the fresh water tank, taps or water heater. There is no option to just run the heating without the hot water. Now, as there is no water in the boiler - can we run the heating or will that in some way damage the boiler.

Solely gas, no electric heating.

Thank you

Hi there ,
Welcome, the Truma system is designed to be run with no water in the system & without damage to the boiler by just selecting the blown air heating option only, no problem. Also make sure that the boiler hot water mains switch is in OFF position.

 

[gwyntaxi]

Welcome!

You can run it in mine which is a bit newer. What model Truma is it?

I can run the heating in my 655 starline and it is 2005.

 

[Lenny HB]

Hi there ,
Welcome, the Truma system is designed to be run with no water in the system & without damage to the boiler by just selecting the blown air heating option only, no problem. Also make sure that the boiler hot water mains switch is in OFF position.

It depends on which model you couldn't on the early Combi's.

 

[tonyysue]

Good morning.

Subscribing member but our first post. We are Mark and Nikki and we purchased a Hymer last year and are (or would like to be when we’re allowed) hooked, we love it.

We have a 1995 (white) Hymer with Truma gas heating, which is extremely efficient and quick to heat water and the van.

Quick question regarding running the heating. The only thermostat options are (hot water), or (hot water and heating). We have drained the camper down so that there is no water in the fresh water tank, taps or water heater. There is no option to just run the heating without the hot water. Now, as there is no water in the boiler - can we run the heating or will that in some way damage the boiler.

Solely gas, no electric heating.

Thank you

I have the same year Hymer - yes you can run it without water the book says! As a matter of interest, because ours broke down a couple of years ago snd they no longer support that model so couldn’t get the part required, I modified the system and fitted a diesel heater in the heater tube that comes out behind the drivers seat ( mine is left hand drive), using this point now as the air intake for the heater - the diesel heater now blows hot air back through this tube towards the original Gas heater, and heats the water as well as the van! It’s more efficient and thrifty than the original! Bought the diesel heater complete from ebay for £90 from a newish van which had been a write off!

 

[jimbobjones]

I have the same year Hymer - yes you can run it without water the book says! As a matter of interest, because ours broke down a couple of years ago snd they no longer support that model so couldn’t get the part required, I modified the system and fitted a diesel heater in the heater tube that comes out behind the drivers seat ( mine is left hand drive), using this point now as the air intake for the heater - the diesel heater now blows hot air back through this tube towards the original Gas heater, and heats the water as well as the van! It’s more efficient and thrifty than the original! Bought the diesel heater complete from ebay for £90 from a newish van which had been a write off!

Hello, do you have a video or any photos of your installation please? Thanks!

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[jimbobjones]

I have the same year Hymer - yes you can run it without water the book says! As a matter of interest, because ours broke down a couple of years ago snd they no longer support that model so couldn’t get the part required, I modified the system and fitted a diesel heater in the heater tube that comes out behind the drivers seat ( mine is left hand drive), using this point now as the air intake for the heater - the diesel heater now blows hot air back through this tube towards the original Gas heater, and heats the water as well as the van! It’s more efficient and thrifty than the original! Bought the diesel heater complete from ebay for £90 from a newish van which had been a write off!

Hello, do you have a video or any photos of your installation please? Thanks!