I have your exact poolpilot setup except on a larger pool (~35K gallons).

As for power Waterbear is correct. The manual (page 10 start up procedures and you can download as well from autopilot) states start at power level 2 and 50%. Check level and either go up or down as needed. If you get above 75% to maintain then you need to go up to level 3 and reset to 50% and begin adjusting again. If you go below 25% then you need to drop power to 1 and reset to 50% and begin adjusting again.

Also you mention you only run 4 hours day and 4 hours night. This (along with your CYA level) obviously is also just as big a factor as setting the level and %. You need to figure out based on your pump running at high, low or combo high/low how many hours a day it takes to circulate your entire pool volume at least 1 time. This should be the minimum you run the pump and if your pool pilot is on for this entire time then you will need to adjust the power/% based on this time.

As for your number 2 & 3 questions, to the best of my knowledge the pool pilot can only control a 1 or 2 speed pump. It also can only operate at either low or high and cannot turn the system on and off if you use a two speed pump. The default is low speed for 24 hours and you set the system when to switch to high speed for up to two time slots.

Since like you I wanted to be able to turn the system on/off, control low/high and also have a polaris pump I purchased a digital 3 source timer. I use one to turn on/off the pool pilot for 12-14 hours a day depending on time of year. I use the other to control the polaris as needed.

For the 12-14 hours I have the pool pilot on I then program the pool pilot to run 4-6 hours on high during peak heat and for the remaining time it is on low. Keep in mind that when running on either high or low the system is generating chlorine based on your level/% setting.

Lastly, I obvoiusly could circulate the volume of my pool much quicker if I ran the system on high for less overall time but I have found that the system actually uses less electricity and I get better performance (ie cleaner pool) by running the pump for a longer time on low and ~4-6 hours on high. This also lets me keep the power level and % lower on the pool pilot because it is on generating cholorine for a longer period of time. Mine is currently running at level 1 around 45-55% with a temp of around 90-92 degrees. I try to keep my Chlorine level around 6-7ppm with a CYA of 50-60ppm which falls within the "Best Guess CYA Chart" published by Ben in 2003 and what I live by!

If you need any more detailed info on the the setup just let me know as when I did the installation myself both Poolsean and Waterbear helped me so I give them all the credit for a system that works great with minimal effort.