I hope someone can help me with few questions I have regarding solar heating.
I have a pretty simple set up right now - pump, filter and the pool The flow is about 52-55 GPM for the pump on high (measured by flowmeter, confirmed by filter gauge and pump vacuum gauge). I'm thinking 8 Aquasol 4x10 panels. They will be located right next to the pump/filter on the same level, so their head loss will be minimal. Looking at the panel tech sheet and my pump curve, I expect the flowrate to drop jsut a bit resulting in about 6GPM flow thru each panel (48 GPM, 8 panels) or maybe 5.5GPM.
The tech sheet says 4GPM is ideal flow, 10GPM is max. Should I bother with bypass to lower the pressure in the panels??
What is the simplest way to control solar? My pump run time is fixed and all I want is to open solar when sun shines and close it when it's not. I assume I can't get away with just a three way valve, actuator and temp sensor, I will still need a controller, right? Is Hayward GL-235 the simplest one for this purpose?
And the last Q. The panels will be mounted at about 40 degree angle. Is it ok to keep the top headers align horizontally without any tilt and simply put a vacuum breaker on the opposite side of the solar exit? The tile is recommended to prevent a possibility of air lock, but I wonder if have vacuum breaker on one top corner and solar exit on opposite would be enough for that purpose?
On this pic the problem is shown for panels tilted the wrong way. I think placing the breaker in the location omarked with an arrow would solve the problem. Especially if panels are not tilted at all.