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Mini-Split Control Cable

This question is about the mini-split control cable that connects the outside unit to the inside unit. The cable supplied with the mini-split is the typical 4-conductor black heavy cable, avilable everywhere. From the literature, I have been able to glean that 120 volts is carried on these wires from the outside to the inside unit (you would think it would be low voltage, but apparently not). In other words, it's not the typical control cable carrying 24 volts or whatever, that goes to your central air conditioning unit, which is always left exposed -- at least on the installations I've seen.

The instructions say to route the cable along with the refrigeration lines and the drain tube, wrap everything with tape, and just run it all through a lineset cover to the outside unit. In every Youtube video I have seen, that is exactly the way it is done. However, doing it this way means that a couple inches of this cable will be exposed.

It's a Mr. Cool unit, if that makes any difference.

In the installations you have seen, is the control cable (1) routed this way along with the refrigeration lines with a couple of inches exposed, or (2) with the refrigerant lines with a flexible conduit that reaches all the way up into the lineset cover leaving no cable exposed (which seems alright to me -- there are two knockouts on the unit), or (3) run through the flexible conduit that powers the main unit? Or, do I worry too much?

Options 1 and 2 are the easiest and prettiest. The system is not really set up for option 3. That would involve running the control cable out the side of the unit where no hole exists for that purpose. Then the cable would have to run along the wall to the point where the main power exits the wall, to the disconnect, and continue on with the main power through the flexible conduit. This seems it would require some kind of surface raceway channel that is commonly used to extend indoor wiring -- or even more conduit on the walls.

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