I have started this thread to discuss all aspects of the LG Therma V Air Source Heat Pump that I am just installing and in particular a control strategy for it.  I have the 5KW monoblock version of this unit.   But first I want to talk about water flow rate requirements.  This is an essential subject, but one completely overlooked in the installation manual, and I could not find anything searching on the internet, so feel it is time for some simple clear and concise information.