I finally completed my project, did it just like Dave but changed a couple things around.
1. I used 1 1/2" XPS foam boards and made troughs out of them, in 4 foot lengths and 4 inches in height, I used the small cans of spray foam to assemble them. The foam acts as a sealant and an adhesive.
2. The 1" O2 barrier pex lines are a pain to deal with, even letting them warm up in the sun on a 70 degree day did nothing, so I tied a weight to then end of each one and stretched them out as far as a could to help straighten them. After a week of this they still had "memory" and coiled back up some. To separate the 2 lines i cut XPS foam into 2" strips and zip tied them together, that helped out a lot.
3. I used 10" spikes and nailed through the 2" strips, between the 2 main lines, through the troughs into the ground to center everything and to hold them in place.
4. I then zip tied the water supply line to the return line. You will see 3 lines in the photo, the supply (blue), the return and main (red). The main line is not touching anything to ensure minimal temperature loss.
5. It was 55 degrees and sunny yesterday. The touch n seal u2-600 needs to operate between 70 and 90 degrees. I stored the 2 tanks in a room with an electric heater for 3 days at 85 degrees. It is critical to keep the tanks warm before operating them. As soon as I was ready I took the tanks out, hopped in the trench and started spraying. My neighbor moved the tanks as I was spraying. I took 3 passes on everything. Its an 80 foot trench and the troughs are 4" deep. You have a 30 second window before the nozzle starts drying, but they give you plenty of nozzles. You can not spray 4 inches at once, they advise you to make passes. They were correct because I noticed if I tried to spray a second layer on right away it blew the first layer off. This stuff dries in 30 seconds.
6. The troughs did save me on a few things, to make sure the lines were centered, to hold everything down, and to minimize on the spray foam. The sections of trough should be close together as possible but the ends don't need to be glued, I had a couple turns and pitches to make. The foam kit sealed everything together.
I had to do it this way because I could not get a spray foam contractor to come out, nobody would return my calls or emails. The pex lines, the xps boards, the foam kit, and other misc items came out to about $1,100. I was able to insulate the lines, parts of the boiler, and I have about 1/4 left in the tanks to do some areas in the basement. Doing it this way I was able to run a new water supply line to the shop that will be used for the boiler as well. The boiler has a float in the top that will automatically turn the water on and off as needed, just like a toilet tank. Down the road a may get a sealed system, which is why I bought the oxygen barrier lines.
I am very happy how everything turned out. I would highly recommend this kit, covers 600 linear feet and is easy to work with. Much thanks to Dave and to my neighbor who sold me the boiler and helped me as well.