MVHR flexible sound attenuator location

[Huckleberrys]

Afternoon. I have a BPC MVHR system that I am now installing...very little instructions, that is not too much of an issue though. One question I am asking you all though is the flexible sound attenuators...I have 2 supplied...am I fixing those from the MVHR unit to the manifolds or am I fixing them from the MVHR unit to the inlet and outlet to the atmosphere? Thanks.

[IGP]

I have the same, I installed between the MVHR unit and the supply and extract distribution boxes. You want to attenuate the fan noise of the unit to the house, not the the outside to the unit - unless i'm massively mistaken!  

 

Hope that helps

[Huckleberrys]

That makes a lot of sense. Thank you