Netsys is ignoring fixed duct sizes

RE: Netsys is ignoring fixed duct sizes

Craig Sawyer — Thu, 26 Oct 2017 16:05:59 GMT

That's perfect. Problem solved!

Thanks Duncan

RE: Netsys is ignoring fixed duct sizes

Duncan Brown — Thu, 26 Oct 2017 15:25:07 GMT

Craig - yes - that could also cause problems, as the pipes 'heal' to one section but have different dimensions on each part.

If you try the following, it shouldn't have too much impact on the end results.

You can click the image to make it larger

RE: Netsys is ignoring fixed duct sizes

Craig Sawyer — Thu, 26 Oct 2017 15:05:34 GMT

I did have fixed neck sizes in place which I have now un-ticked in all instances just in case but I don't think that has helped.

I have no risers as such, I am using wall mounted grilles at the same height as the system.

I think the problem may be related to duct size changes in the same section. For instance, where I have a 1400 x 200 transforming to 900 x 400, the whole section becomes 900 x 200 in the calculation. Is there a correct way of adding a reducer that I'm not using? I was considering "bodging" this by added a short branch with limited volume but hope there's a better solution!

RE: Netsys is ignoring fixed duct sizes

Duncan Brown — Thu, 26 Oct 2017 14:34:57 GMT

Hi Craig - is it possible that you've fixed the riser part of section 26 to 600x300? or the neck size of the inlet is fixed. Both of these could be overriding your fix.

Regards,