Flow rate needed

[jamesdiyer]

21 minutes ago, dpmiller said:

sort that knot of restrictive elbows at the back of the outdoor unit and your issues will disappear, I reckon. No calculator needed.

Would you propose using a Flexi to exit the back then? As we need to make a 90deg to enter the building. 

 

Perhaps just bend 35mm plastic 

Edited yesterday at 08:26 by jamesdiyer

[dpmiller]

Flexis are recommended regardless, but yes either a formed bend or a radiussed bend fitting instead of those elbows. Personally I'd try to minimise the number of those pressed fittings used where possible as their ID can be surprisingly small...

[jamesdiyer]

9 minutes ago, dpmiller said:

Personally I'd try to minimise the number of those pressed fittings used where possible as their ID can be surprisingly small...

 

Yes! Exactly.