I mentioned (recharge) on the 5 gallon bladder tank when I ment PRECHARGE, my bad. I just installed a Grundfos 6sqf3 with such a scheme. It lifts 480 ft. vertically and a whopping 3000 feet horizontally at 5+ GPM . Seems to work great BTW if anyone with an sqflex is trouble shooting a cu200, it can be easily bypassed by moving the right hand pump power plug and inserting it on the left side which will bypass the cu200 altogether. If the pump works, in that mode the cu200 may have issues. The sqflex will pump with no controls but of course you won’t know what is going on without external instrumentation. The above installation power consumed is 770 watts, amazing those progressive sqflex pumps.
Not much happening here, yet.