The new Hayward H100ID1 has been successfully installed and tested on a limited basis today. I have a few questions:
1) I assume the rather low-tech thermostat runs on the principle that when it's on a low setting, the heater shuts down after the incoming pool water reaches a modest gain, and at a higher setting it continues to run until the incoming water is much warmer -- not that setting the thermostat controls the intensity of how much the water is being heated (if that makes any sense). It's either on and heating as much as it can and then off, not varying how much it is heating the water as it passes through.
2) In theory, my pump is supposed to be flowing 50 gpm and the heater is rated for 20-70 gpm (if memory serves). Is the efficiency of the heating process at all like the solar, whereby only a certain flow rate will hit its sweet spot, much like with the solar panels, or do I just divert all the water through the heater and assume that is the most efficient way to heat the water? My pressure at the filter rose only a little more than 2 psi with the bypass valve fully closed, thus running all return water through the heater.
3) Anything else I need to be looking for to get the most out of my Hayward heater?