Water Heater Vent Cover

[Spanda]

We have a Truma combined space and water heater. The Owners Manual, and everything else we have read, says it is vital to take the cover off the outside vent when using gas to heat the water. Which we always do. But the Owners Manual doesn't say why it is so important. Can someone enlighten us ?

 

[FJmike]

Simple put its a flue not a vent so needs to let all the carbon monoxide out

 

[Kevan]

It will melt and prob cause a fire if you don't.

 

[Spanda]

It will melt and prob cause a fire if you don't.

Now that makes sense lol

 

[Spanda]

Simple put its a flue not a vent so needs to let all the carbon monoxide out

As does that !

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[Bill_OR]

If it's anything like our Truma water heater then it will simply not light unless the flue cover has been removed - you'll get a red light on the control panel!

 

[EX51SSS]

Ours won't even start with cover in place which I found out many years ago on a freezing cold night and reading and reading instructions

 

[DanielFord]

If it's anything like our Truma water heater then it will simply not light unless the flue cover has been removed - you'll get a red light on the control panel!

You beat me to it
It should be pointed out, you only need the cover off when heating the water with gas, on electric it can stay on.

 

[faraway]

If you are parked for a few days, can you simply leave the cover off until you pack up to move off again?

 

[Sheddy]

Yes.
Cheers
Ed

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[EX51SSS]

If you are parked for a few days, can you simply leave the cover off until you pack up to move off again?

Assuming that you are in the Moho and you are running gas appliances then you need it off. Whether you replace as you travel is your choice. Personally, I leave mine off until I winterise as we're not fortunate to have months away at present.

 

[Techno]

It lets air in so the gas will light as well as letting combustion fumes out
With the cover on it won't ignite as there is insufficient oxygen

 

[faraway]

Mmm, thanks. When you say "Assuming that you are in the Moho and you are running gas appliances then you need it off." do you include the fridge when running on gas or just the boiler? That's all I have that runs on gas.

 

[Techno]

It is not related to the fridge

 

[faraway]

Thanks, I didn't think so but was a bit worried there for a moment!

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[EX51SSS]

Mmm, thanks. When you say "Assuming that you are in the Moho and you are running gas appliances then you need it off." do you include the fridge when running on gas or just the boiler? That's all I have that runs on gas.

Well fridge is a different system but basically hot water, boiler, heating etc. Oven and cooker are similar to fridge. Gas burns when in contact with air as such and if you have boiler cover on then there is no air for gas. I appreciate I said appliances but heating water etc

 

[faraway]

Thank you very much.

 

[jockaneezer]

Serious question, why are they fitted, is it just to stop spiders etc finding their way in when you're not using it ?

 

[Techno]

I suspect to keep driving rain out on the move

 

[chaser]

Serious question, why are they fitted, is it just to stop spiders etc finding their way in when you're not using it ?

As @EX51SSS said , we never put ours on after the first run of the year, till it gets put back in the shed for winter, hasn't come to any harm yet

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[gus-lopez]

Serious question, why are they fitted, is it just to stop spiders etc finding their way in when you're not using it ?

As well as @Techno reply dust . Leave it off here & the amount that gets in is unbelievable.One I removed two years ago had half a cup of dusty earth in it. The burner was so blocked that If I hadn't had the nephew travelling with me when we used it for hot water I would have assumed I had been dreaming that it had actually worked.

 

[weebill]

We have a 2010 Burster Aviano from new and never had a cover on the Truma. Van is fully serviced every year and no mention has been made of any heater problems so, i ave to ask, is a cover really necessary ?

cheers
Bill

 

[Techno]

We have a 2010 Burster Aviano from new and never had a cover on the Truma. Van is fully serviced every year and no mention has been made of any heater problems so, i ave to ask, is a cover really necessary ?

cheers
Bill

I think the Burstner has the circular vent that does not have cover
Like mine

 

[weebill]

Thanks Andy, thats exactly like mine so query answered

cheers
Bill

 

[Larrynwin]

Had me guessing for a moment , but mine is a circular one so I assume no cover.

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[Techno]

Thanks Andy, thats exactly like mine so query answered

cheers
Bill

Aye it's the vertical rectangular ones that have a cover

 

[gus-lopez]

I think the Burstner has the circular vent that does not have cover
Like mine
View attachment 139084

yes , they are the ones that @ianthebuilder uses for shredding German awnings.

 

[keith]

Serious question, why are they fitted, is it just to stop spiders etc finding their way in when you're not using it ?

It protects the very small pipes used to heat the water which will freeze if it gets very cold. Some who visit very cold climates insulate further to stop this happening except when using the heater.

 

[Bart]

yes , they are the ones that @ianthebuilder uses for shredding German awnings.

I remember that post , funny as hell , it could only happen to Ian

 

[Pilote87]

I think the Burstner has the circular vent that does not have cover
Like mine
View attachment 139084

I have a cover for the circular vent on our Pilote, although I only put it on when I remember. That is usually when we arrive home and I look in the "junk" holder next to the gear lever, below the radio, etc.

J