I have a DIY solar heater I'm trying to get working, I'm using 1/2" piping and taking it up on the garage roof that has a total lift off about 15-20 feet (to the top of the ring), I'm estimating there since I didn't have time to measure. I'm using the intex pump that came with my pool which is a SF80110 (according to my manual, it's a 1600 GPH pump).
My problem is that I can't seem to get any flow from it since I put it on the roof. When it was on the ground I had no issues, now on the roof I can sometimes get a trickle but most of the time I can't get any flow at all even with the bypass completely closed forcing all the pump flow through the heater.
Does this pump just not have enough head pressure to pump it that high or is it more of a prime issue. If it is just likely not priming, how would I go about getting it to prime? I've included pictures of my setup for reference, thanks in advance! 20160822_073949.jpg20160822_073936.jpg
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