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Old 04-26-2007, 07:41 PM   #1
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Default Help on wiring

Has anyone wired up a Johnson Controls A19ABC-24 temperature control to a chest freezer? I don't know a thing about this stuff. Thanks for any help

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Old 04-26-2007, 07:56 PM   #2
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Nope, but I could tell you the improper way to wire in a Ranco; and then the correct way . Got any online schematics?

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Old 04-26-2007, 08:06 PM   #3
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Easy. Break the powerline in the chest freezer and attach to the Y and R terminals. These are open on low temp, close on high temp. That is, they connect the freezer back to the power source when the temp hits you upper limit.

http://cgproducts.johnsoncontrols.com/CAT_PDF/1927010.pdf


I talk a little about how I wired mine (not the exact model) in the part 1B video in my sig.

Note, if you want to use the controller for heating in the winter, you can use the other terminal since it's a close on low.

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Old 09-19-2007, 01:59 AM   #4
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This doesn't help me much as an "electrically challenged" person. I just won the same model on ebay assuming it was wired. I don't even know where to start. I got the thing open, but I imagine I need to buy another part so that I can plug the fridge in.

But then how do I get from the temp. control to the wall? I've wired an electric outlet before, so I know what the 3 different wires do, but have no idea on the names or letters associated for each wire. I essentially indentify them by color.

Any help would be greatly appreciated. Please limit the techy language. Better to begin post with "look moron, you take the black wire..."

Thanks,

Frank

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Old 09-19-2007, 04:30 AM   #5
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Look moron, you take the black wire and... Sorry couldnt resist

Seriously though, open up the the cable going to the fridge and see if they are black, white, and green. If so cut the black wire and tie the plug side of the cable to terminal Y of the controller. Then take the other side of the wire comming from the fridge and wire it to the R terminal of the controller. You may have to splice in some extra lengths of black wire to get enough room.

If you dont have black, white, and green then find the wire going to the skinny terminal of the plug, If you are looking at the plug with the pins facing towards you and the ground pin on the bottom it will be the one on the left.

I hope that clears it up for yah!

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Old 09-19-2007, 01:29 PM   #6
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The easiest way is to find the thermostat on the frige/freezer, unplug the two wires atatched to it and wire them into Y and R terminals. mount the control on the frige/freezer, not the wall. Make sure unit is unpluged first. Drill a hole through the wall of the unit, being careful not to hit any refrigeration tubing or existing wiring, and insert prbe into interior of unit.

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Old 09-19-2007, 01:30 PM   #7
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When I wired my controller I didn't cut the power cord to the freezer.

Instead, I wired the controller with an extension cord. I just plug the cord into the wall and freezer into the cord. Works the same way.

This way I can move the controller if I want to and haven't permanently modified my freezer.

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Old 09-19-2007, 11:23 PM   #8
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Thanks everyone.

brloomis,
your way sounds the most practical but I'm still a little unclear. Does this mean you take an extension cord, cut it in half, and then wire the Johnson between the male and female ends:

fridge >female end ext. cord > temp. controller > male end ext. cord > wall

???

I'm really sorry, I feel like an idiot. Does someone have pictures?

Frank

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Old 09-20-2007, 01:21 AM   #9
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Ask and ye shall receive!



Hope that helps!

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Old 09-20-2007, 01:24 AM   #10
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That makes perfect sense radicalel. Thank you all for your help.

I'll let you know how my first lager comes out.

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