Directly from their installations instructions...
"Use outdoor and waterproof connection cable rated more than 300V for the
connection between indoor and outdoor unit. (For example, Type SJO-WA)"
That's not standard 18/4 thermostat wire!
That's one of the reason's you need to hire a competent HVAC technician to
install your mini-split system!
My point is that being a low voltage circuit to the blower unit makes it a
simple installation, more so than having to run a line voltage and control
circuit. It's still an 18/4 cable albeit not CL-2. Truth of the matter is
the installation I saw was done by a large union "HVAC professional"
The reason I post here is to try to give useful advice to homeowners and
do-it-yourself folks that request it. I do this as a seasoned professional
in my particular field, as do many others. Since your advice to folks seems
to be to call a professional, why exactly do you post here?
Well RBM, since you mentioned it, posting to folks to use 18 ga. for this
application is incorrect. I post *once in awhile* to help folks as well. I
would not recommend that DIY's do air conditioning and refrigeration work,
since it is hazardous. It can kill. That's why you don't usually find HVAC
equipment available at your local Home DIY center. It is a silent killer if
not properly installed. And yes, I have the training, the certificiations
and the degrees. And yes, I'm in the trade. Have been for 36 years going
And yes, people can get hurt if you choose to install a device that,
utilizes inductive motors with windings that if not properly grounded can
kill. Particularly with the presence of water. Particularly with under
So if anyone's interested in a ductless unit, if you purchase and want to
install the equipment youself - please by all means read the instructions,
and when in doubt, call a professional.
Just what kind of BULLSHIT are you trying to pass here?
You come in here and asked a question about installing a mini-split system.
Now, you want us to believe that you're a seasoned professional????
Yeah, and I bet you have some land in FL for sale, right?
The fact is, you want to install something which you don't have the training
to do. You come in here and asked a question. You didn't get the answer you
was looking for, then you try and side-step your shit and now act like a
professional. Yet you want to disregard the manufacture's installation
instructions. Sorry, that just doesn't fly.
You're just another dumb-ass homeowner that wants it done CHEAP!!!
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