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Posted by Dave on October 18, 2007, 11:55 pm
>I have a Panasonic bathroom fan, about 75 CFM. I want to put a
> backdraft damper at the end of the exhaust pipe to reduce cold air
> coming in the bathroom. It is one of those spring loaded jobs and
> says only needs .04 in W.G. pressure to open. I was going to put at
> the end of pipe to the sophet for ease of installation, rather than
> inline. Comments, or suggestions? I was also considering a eave vent
> with dampers by deflecto white plastic, dual side dampers flush mount
> to sophet. Anyone use one?
>
Do you mean .04 PSI?
Is W.G. = Waveguide?
Is sophet = soffit?
What is deflecto?
If you're using a waveguide pressure relief valve, its meant for a dry air
system. Such a valve runs offline, not inline with the waveguide, a burp
valve if you will. Such dry air isn't coming from bathroom vent.
Dave
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