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ISO 7241-B. Usually used for hydraulics, but they more than meet the temp and flow requirements for the glycol.

Quick disconnects showed up today:

Sure. The brewery is in a bit of a state of flux right now though. I'm in the middle of transitioning everything over to tri-clover fittings.

And mounted next to the electric brewery controller: Aside from some BCS firmware nonsense regarding a hard limit of 6 temp controlled outputs, it's ready to go once I get the remaining fittings.

Should be under 10, but you'd have to check on the specific model.

I'm putting a coil inside each conical, and heat tape wrapped around the outside for heating in the winter. I still need to insulate the conicals and have a couple rolls of 1/2" neoprene for that, but am waiting for the remaining fittings before I do that.

Got a link to his raspberrypi build? The BCS has a full web interface that's relatively easy to use. Programming it can be a bit of a pain though.

5,000 BTU A/Cs are around 5 Amps actually (page 2): http://manuals.frigidaire.com/prodinfo_pdf/Edison/FRA052XT7_0513_EN.pdf

BCS rewired:

Bingo. I suppose you could do it supply side, but then you'd be increasing the temp of the glycol slightly before it got to the conicals. Probably better to do it on the return side.

Make sure you get one of the analog A/C units if you're looking for that. Thankfully they're also the cheapest ones out there. If you open up the unit there should be a wiring diagram and you can rewire it to always be on when it's plugged in.

Hopefully in a week or two. I need to wire up the controller today or tomorrow, but other than that it's just waiting for the remaining fittings in the conicals. I need to cut the neoprene for insulating the conicals too, but I'm waiting on the fittings for that.

Inside the cooler: Waiting on a dip tube for the return line, but otherwise that should be good to go for parts. I also need to position the A/C a bit better in cooler. And in place next to the brewery:

Here's the model I bought: http://www.china-electricvalves.com/product/product32.html I got them through here: http://tf-valvefittings.com/ While it was a bit sketchy to order, at the time there was nothing in stock for motorized ball valves in the US. It took about 2 weeks for them...

Here it is from people that make glycol chillers for a living: http://www.prochiller.com/files/GLYCOLGUIDE.pdf page 4, along with a diagram.

Wiring for the ball valves is done: Cutouts for the new chassis of the BCS-460 are also done. Gotta wait for the paint to dry before I can continue.

Oh, wiring it isn't terribly difficult. I just hate drilling holes in a new chassis and then painting everything. Giant pain in the ass. Stainless brewing finally got the 1/2" tubing in stock yesterday. So, I put through the order for that. Hopefully it'll be here sometime next week. I'm...

To equalize the flow between the conicals. If you don't have that, the first conical in line gets a lot more glycol flow to it than the last one in line since there is less total pipe for the glycol to flow through. This way they should get roughly equal amounts of glycol if more than one...

So begins my least favorite part of the project... rewiring the BCS:

http://proflowdynamics.com/ has the cheapest ones I've run across.