CYA due to the possibility of damage to the unit (compressor / condensor) if run under-voltage, with subsequent service calls or liability expenses?
Where was it manufactured?
While most of us (given a choice) would use higher quality equipment that could handle a 10% variance, maybe they (in the interest of saving some $ no doubt) are using components with a "fudge factor" of only 5%?
The sticker probably gives them an "out" if they're called to replace a component damaged as above. If it's in a "regular" outlet or circuit, the field serviceman can tell the owner it "wasn't installed per directions" and isn't covered under warranty service. ;(
(of course, for an additional $199, we'd be happy to repair / replace the unit... )
Re: Single Outlet Circuit?#117511 06/21/0406:24 PM06/21/0406:24 PM
Could it possibly have something to do with inrush current? Maybe Sears doesnt want the liability of someone plugging this thing into a power strip with their new computer/plasma TV/monitor.. & the A/C browning those things out.... On the end of a 14awg 15A circuit, you'd probably seem the light dim everytime this thing kicks on...
Re: Single Outlet Circuit?#117512 06/22/0405:15 AM06/22/0405:15 AM
Can't put my finger on the code section, but I think this has more to do with the fact that even a window AC unit, once installed, is not really a portable cord & plug connected load in the same sense as a lamp, radio, etc. A technical stretch maybe, but it is not terribly unlike a dishwasher that is shoved into a cabinet abd plugged in (except the obvious fact there is no water connection).
I agree that it's unrealistic for the manufacturer to presume someone is going to install a new receptacle and circuit for a 4.8 amp unit. But that's probably where the requirement comes from. If I can find the NEC article, I'll post it later.
There are 10 types of people. Those who know binary, and those who don't.
Re: Single Outlet Circuit?#117516 06/26/0406:49 PM06/26/0406:49 PM
I once had the Personell director of a company composed of engineers say "what good is an English major?"
I think that the lable is using poor English. I believe that what they meant was "install on a dedicated circuit." While this may not be a specific code requirement, the other requirements for overcurrent, wire sizing, disconnecting means, etc., are a lot easier to meet if you have a dedicated circuit!
One exception, that I am willing to entertain, is having associated equipment (filters, humidifiers, etc.) and the furnace blower on the same circuit. These are arguably part of the same system...