- Messages
- 98
Makes no difference to the conclusion whether the system is vented or unvented. You would only need a 15m head if you were trying to pump water from, say, a borehole in the basement to an open tank in the roof.
If this is not obvious to you then you should subcontract the design of the system to someone who knows what they are doing. (No offense intended!)
No offense taken, you have made a very valid point, I appreciate your comments. I have some reading to do........