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Hi we have a 2011 Unicorn Valencia an currently getting a big draft coming into the van from the top of the fridge is there any way of  closing the outside vents to stop the draft, I've had a look but can't workout how it would open or close.

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The vents don't close but you can get Winter covers that fit over the outside of the vents, expensive for what they are.

Caravan fridges should be sealed against external drafts but many aren't.

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The external fridge vents are not adjustable by design - the fridge needs to draw cool air in through the bottom vent and expel the air it warms through the top vent.

 

 

‘Winter’ covers are available to reduce the vent openings when in outside temperatures are very low - depths of winter caravanning but they should not be used otherwise*.  The fridge operation will be impaired.

 

The draught you are getting is an undesirable by-product for which the simple answer is to put a draught excluder on the top of a fridge.  A rolled tea towel does the job.

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Get sorted - if u use on gas - carbon monoxide can seep in potentially 👍

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In theory the fridge should have a foam seal around the fridge towards the back of the fridge.

But if the fridge has been out for any reason it might of been disturbed.

You need a draft at the back of the fridge for cooling purposes.

On our mark 1 Valencia I put tape around the fridge( between the fridge and the wood work to reduce the draft.

Try taking the top vent off out side when it’s dark with the caravan lights on, if you can see light that’s where your draft is getting in.

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The fridge does not appear to be fully sealed and the draught will not be part of the ventilation system. You simply need to block the area where the draught is coming from. 

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17 hours ago, djadria said:

Get sorted - if u use on gas - carbon monoxide can seep in potentially 👍

 

That's a common misconception.

 

The fridge gas burner and flue are a sealed unit that runs through the space at the rear of the fridge and usually exits as a small part of the top vent which is not covered by the winter cover. The risk of CO entering the van from there is similar to the risk from the boiler and/or space heater when they are running on gas. 

Caravans have holes under every gas appliance to allow the heavier than air gases to escape in case of leaks. So, especially when there are high winds and cold temperatures there will be draughts. In this particular case the winter covers would reduce it substantially and a towel over over the top of the fridge would help it dissipate.  

I've got nothing to do on this hot afternoon

but to settle down and write you a line.

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1 hour ago, Steamdrivenandy said:

 

That's a common misconception.

 

The fridge gas burner and flue are a sealed unit that runs through the space at the rear of the fridge and usually exits as a small part of the top vent which is not covered by the winter cover. The risk of CO entering the van from there is similar to the risk from the boiler and/or space heater when they are running on gas. 

Caravans have holes under every gas appliance to allow the heavier than air gases to escape in case of leaks. So, especially when there are high winds and cold temperatures there will be draughts. In this particular case the winter covers would reduce it substantially and a towel over over the top of the fridge would help it dissipate.  

That's true of older vans...... newer fridges e.g. dometic / thetford - have the flue just sitting inside the fridge rear cavity - and the flow of air out of the grille takes the gas fumes out this way (indeed my latest fridge from dometic says do not fit winter cover to top vent if working on van).  Any inward draft through the rear vent into your van can bring in gas fumes.  This might be ok if burning ok - similar to having a gas ring on the stove - but if there's an issue - e.g. dirty burner in fridge you could have carbon monoxide in the van - these are not sealed units like the gas boiler.  Just make sure you have your carbon monoxide alarm working for safety - carbon monoxide is colourless and odourless and deadly - just being cautious.

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I would need to see a photo of your setup to understand what you mean by "rear vent".

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Just the grille on the outside of van

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Lots if Talk of gas exhaust fumes entering the caravan, when you use the gas rings on your cooker where do you think the gas fumes go?

In the caravan hence the ventilation holes aided by drafts!!

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Posted (edited)
1 hour ago, tanisla2 said:

Lots if Talk of gas exhaust fumes entering the caravan, when you use the gas rings on your cooker where do you think the gas fumes go?

In the caravan hence the ventilation holes aided by .

Edited by djadria
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1 hour ago, tanisla2 said:

Lots if Talk of gas exhaust fumes entering the caravan, when you use the gas rings on your cooker where do you think the gas fumes go?

In the caravan hence the ventilation holes aided by drafts!!

May I refer you to p6.....

 

https://caravanfridges.co.uk/pdf-manuals/rm-rms-rml-installation-manual.pdf

 

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