Starting from the 'jigged' end (you can see the stop block in the top of the photo), I soldered the first 5 tee fittings, leaving the final 3 fittings loose for the next step. Likewise, I soldered the opposing 5 fittings at the other end of the assembly.Next, the partially-soldered assembly was rotated 90 degrees on the table, and the previously finished (already soldered) module was set to the left of it. Then, the stubs and a union fitting were installed between the two modules. The unsoldered fittings of the module-in-process are towards the union of the two modules, such that they can be brought into perfect alignment before proceeding. With the union in place, I soldered the remaining tee fittings on both ends, but not the union itself.Before soldering the union in place, I separated the two modules and attached Sharkbite end stop fittings at three of the corners, plus a pressure-testing assembly at the fourth corner. The module was pressurized to check for leaks. Once this was done, I removed all the Sharkbite fittings, reconnected the modules at the union fitting and soldered the union in place. Now the modules can be disassembled and reassembled to one another using the threaded union fittings.
Meanwhile, I installed insulation in the collector frames. I opted for 2" of insulation using a bottom 1" layer of XPS foam and a top layer of 1" polyisocyanurate.
To test fit the system while building the modules, I temporarily installed them as I went.
Here is a closeup showing the union fittings in place. Holes bored in the vertical frame members allow each unit to be inserted into place.
Next step- installing the heat transfer plates....
2 comments:
how did the insulation work out using the two different types? I used 2" blue poly insulation and in melted at the top during the summer in my collectors. So i m going to replace it and add the 1/2" polyiso on top of it like you did. so thats why i'm asking.
Anthony,
I haven't installed the glazing or connected the plumbing yet, so can't give you any results...but I have no doubt that the double layer insulation system will work just fine. FYI- I used 1" of XPS on the bottom and 1" of polyiso on top.
good luck,
shawn
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