Exhaust fan % when venting outside

Bambu Lab X Series Bambu Lab X2D
1

I need to print a little bit of ASA, so I have hooked up my X2D exhaust fan to a cloudline S4 fan that pulls and vents the fumes outside, that part works well.

For those who have had a similar setup, what % of exhaust fan and filter fan do you run to avoid excessive cooling of the chamber, avoid warping, etc.

(Not interested in discussions about growth tents, secondary enclosures, etc, that’s a separate topic if I need to print more ASA later)

2

I think it was discussed in other similar topics that around 20% fan should be enough. As to have a bit of negative pressure so the fumes will not go into the room.

Now if on your place I will try to test it visually with some steam or smoke. And see how much is enough. Then check if the heating will be affected too much.