Reduce first or later

[Chris Puttick]

Hi all

Having acquired an extraction machine (iTech DC001S) to squeeze into the shed, on installation I realise the only way it will fit (and still allow access to the on/off switches) means the extraction inlet has to connect directly to a 90 degree bend. This will bring the pipe out from behind the machine to where it can be routed to the machines. The fitting the extractor was supplied with is 0 degree and y-shaped - more or less immediately dividing into 2 100mm outlets. My instinct is I would be better off (least airflow inhibition) by taping a 125mm 90 degree to the inlet before reducing to 100mm - but it might be easier (and take less horizontal space) if I went with an immediate reduction to 100mm and then using a 100mm 90 degree duct.

Related question: does anyone know of a remote switch option that would work with this extractor? Then I could turn the extractor around and just use the fitting it came with...

 

[Terry - Somerset]

Would it be possible to rotate the motor slightly (45-90 degrees??) an re-fix to the base by drilling new mounting holes.

This could avoid a 90 bend which I assume could disrupt airflow.

 

[Jake]

Is that an NVR switch? If not, then I run my extractor from a dedicated socket powered through shower pull-cord switch. The switch is mounted horizontally on an overhead joist, cord replaced with a long bit of plastic twine which runs through screw-eyes into the other overhead joists the width of the workshop past all the machines. A yank on the twine turns the extractor on and off. About the one advantage of a just over head height cellar workshop.

But any NVR would need to be bypassed to make something similar possible.