Definition of "Console" type AC unit

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Bagram Sparky

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Once again the question of disconnecting means, location and how many, has come up here in sunny Iraq on beautiful Camp Taji.
The best I can find on what a "Console" unit with heat is that it is of the split-type unit. It is composed of the interior console and the external unit comprised of the hermetic compressor. I have located manufacturers online with these style units titled, "Console Type Air Conditioner". As such, the disconnecting means should be limited to the manufacturers cord connector installed on the unit, per Article 440.60. I am looking for rebuttal or confirmation as my position is being questioned. Thanks
 
Are you asking if a cord and plug on the unit is sufficient as the disconnecting means?
 
Can you give us more or specific info to go on? I work HVAC everyday, and even Googling isn't helping me know what you have.

Is it a mini-split? How are the two machines connected together?

Honestly, there are arguments about if there should be a disconnect at the indoor machine, which is often powered by the outdoor machine. The only people I hear of that do this live on the Internet. I've never met an AC guy in the real world that does it. It's not anywhere in the manufacturer's instructions to interfere with their wiring design like that.

Or are you saying the outdoor unit has a cord-and-plug? This is usually an acceptable disconnecting means, especially when provided by the manufacturer. Do you have amperage/voltage data or know what plug it is?
 
Bagram Sparky said:
Once again the question of disconnecting means, location and how many, has come up here in sunny Iraq on beautiful Camp Taji.
The best I can find on what a "Console" unit with heat is that it is of the split-type unit. It is composed of the interior console and the external unit comprised of the hermetic compressor. I have located manufacturers online with these style units titled, "Console Type Air Conditioner". As such, the disconnecting means should be limited to the manufacturers cord connector installed on the unit, per Article 440.60. I am looking for rebuttal or confirmation as my position is being questioned. Thanks
Click to expand...

I looked at a couple installation instructions on these type units and both require a switch to disconnect main power.
 
MAC702 said:
Where did you find these? I haven't even confirmed existence of that description. Can you link us or quote us exactly what you found?
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https://www.inventoraircondition.gr/...n%20manual.pdf

"• Ensure that main supply connection is made through a switch that disconnects all poles, with contact gap of a least 3mm (0.118”).
• DO NOT modify the length of the power cord or use an extension cord."


Edit: Page 23
 
Could not the circuit breaker be the "switch" that fulfills that requirement? No need for it to also be the disconnect near the machine, right?

Though my assumption is that their Engrish just means a disconnect of any type.
 
Very confusing because this is a European manufacturer. I'm not seeing how the indoor unit interconnects with the outdoor unit. There is mention of signal wiring...

Line cords are implied but there is no illustration showing them. Only terminal connections which could just as well be permanent wiring. Nothing showing the connection of the implied signal wiring. How can you have line cords with signal wiring??

Yeah, I think their Engrish leaves much out of the translation. Maybe the Russian version tells you more.:roll:

I believe I have seen some manufacturers that market split systems here in the US beginning to add that style of indoor unit to their products. They install like any other split system we are familiar with.

-Hal
 
MAC702 said:
Signalling can be done at line voltage.
Click to expand...

I actually talked about that in my post above but decided not to leave it because they talk about signal wiring. If it were power line carrier current signaling how would there be signal wiring? Also, what happens with multiple units to prevent interaction? I see nothing to indicate that there are addresses for each system and how to set them.

No, this is just horribly written and for installation in some foreign Country.

-Hal
 
hbiss said:
... If it were power line carrier current signaling how would there be signal wiring? Also, what happens with multiple units to prevent interaction? I see nothing to indicate that there are addresses for each system and how to set them...
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Signalling can be done at line voltage but not through the power supply lines. Each signal wire is still dedicated between the machines that need it.

Modern mini-splits that I install do this. It's a 3-conductor TC cable between outdoor and indoor machines. Two for power supply and one for signaling, which is done at line voltage.
 
MAC702 said:
Signalling can be done at line voltage but not through the power supply lines. Each signal wire is still dedicated between the machines that need it.

Modern mini-splits that I install do this. It's a 3-conductor TC cable between outdoor and indoor machines. Two for power supply and one for signaling, which is done at line voltage.
Click to expand...

I understand that.

So how does this thing do that with line cords that are apparently on the indoor and outdoor units? Or maybe not.

• An independent circuit and single outlet must be used for this unit. DO NOT plug another appliance or charger into the same outlet.

• Ensure that main supply connection is made through a switch that disconnects all poles, with contact gap of a least 3mm (0.118”).

• DO NOT modify the length of the power cord or use an extension cord.

• Make sure that you do not cross your electrical wiring with your signal wiring, as this can cause distortion and interference.
Click to expand...

Then there is a chart on the bottom of page 25 that talks about "strong electric signal" and "weak electric signal" and the size of wire to use. :blink:

By the way, it's not Russian. They are a Greek company. So this is all Greek to me.:)

-Hal
 
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