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New MVHR question DIY install


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Hi everyone!! Merry Christmas!

So I (finally, after a lot of help from this group) managed to finish my DIY install of a ventaxia sentinel b MVHR and switched it on. (Now I’ve just read you shouldn’t do this because of dirt as we’re not yet finished so I won’t do it again).

It does work BUT when I put a tissue next to the plenums (without valves in place yet) some are very strong and pull or push it strongly whilst some others you can barely feel the tissue moving. Is this to be expected?? I have had to use 4 distribution boxes due to the layout but the ones from the distribution boxes near to the unit to supply/extract one side of the house seem to be much stronger than from the far side of the house. I am keen to work out if there is a problem before we plaster it all up!

Could it be an air leak somewhere?

Thanks for all your help!

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3 hours ago, AppleQueen said:

Now I’ve just read you shouldn’t do this because of dirt as we’re not yet finished so I won’t do it again).

 

Don't! You'll fill the ducts with dust! 

 

Jamb a cloth in the terminals or stretch a rubber gloves over them. 

 

3 hours ago, AppleQueen said:

does work BUT when I put a tissue next to the plenums (without valves in place yet) some are very strong and pull or push it strongly whilst some others you can barely feel the tissue moving. Is this to be expected??

 

Yes. 

 

Completely normal until you fit valves and balance them 

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