expiredcalxtreme posted Jun 16, 2021 09:37 PM
Item 1 of 3
Item 1 of 3
expiredcalxtreme posted Jun 16, 2021 09:37 PM
Costco Members: MRCOOL DIY 24K BTU Mini-Split Wi-Fi Air Conditioner & Heat Pump
+ Free Shipping$1,500
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I bought the 12k for the master bedroom and was so extremely impressed with how freezing ice cold it would chill the room in a matter of minutes..
It chilled it so nicely that I could tell the whole back of the house was colder when I had it on..
So I went ahead and bought the 24k for the den... Same results.. It not only blows ice cold it cooled the entire den down in just a few minutes..
I quickly realized that just running the 12k in the bedroom and the 24k in the den completely eliminated my need to ever turn on my HVAC again..
It cools the entire house down in minutes on a very hot day.. The HVAC system would run all day to barely maintain the chill in the house on a 90 degree day..
These 2 units are miracle for me.. They run at half the power and only a fraction of the time.. I predict these things will put hvac ducted systems out of business in the near future..
I was able to install both of them myself .. Purchased romex, breaker , and cut off box from amazon , ran the wires to the panel.. I had never done it before but after a few youtube videos and my desire to save a few hundred dollars the install was flawless.. I also purchased a 3 inch hole saw for my cinder block walls..
all that being said.. I dont think you will need the dual zone units if you do what i did.. place a 12k on one end of the house and a 24k on the other you will be amazed.. - oh and this is a very good deal.. i paid 1650 for my 24k from ingrams air and water.
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Here, [homedepot.com] you can get an idea by viewing various options....
https://www.youtube.com/watch?v=QykwWs3
The problem Im having with your statement is that 240 is run all the time inside the house. If your running straight lines, then yes, it must be in some sort of conduit. However NM cable is acceptable, so is BX. Depending on your location NM may need to be in conduit if exposed even on the inside, if subject to damage. But you can run NM freely in most parts of the country in wall.
External power runs need to be in conduit- but not UF. (see above).
Assuming an external run of 240, only the outside condenser is getting 240- the head unit does not receive 240v power. 120 from the condenser goes to the head unit. So technically you are not running 240V through the wall at the point of this unit.
Assuming an internal run of 240, you would normally turn it around and make an external shut off box- run a whip to the conndenser.
The area around a condenser is must certainty subjected to damage so any conductors need to be protected. The PVC your referring to for the wall penetration is not an approved raceway for conductors.
I'm not referring to 240 volt runs inside a house. This is exterior and wall penetration. What voltage do you think the head unit uses? It can't be 120 volts for sure. Even if it was (which would require an additional neutral conductor to be run from the panel) the wiring still needs the same protection.
You cannot run NM cable in a wet location (outside) even if it's in conduit.
Bought romex and breaker box to wire this thing, but ended up splicing off the A/C unit that this heat pump sit next to.
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1. Mini-split places the compressor outdoor, so it is quiet indoor. Window units are loud.
2. It is more energy efficient.
I bought the 12k for the master bedroom and was so extremely impressed with how freezing ice cold it would chill the room in a matter of minutes..
It chilled it so nicely that I could tell the whole back of the house was colder when I had it on..
So I went ahead and bought the 24k for the den... Same results.. It not only blows ice cold it cooled the entire den down in just a few minutes..
I quickly realized that just running the 12k in the bedroom and the 24k in the den completely eliminated my need to ever turn on my HVAC again..
It cools the entire house down in minutes on a very hot day.. The HVAC system would run all day to barely maintain the chill in the house on a 90 degree day..
These 2 units are miracle for me.. They run at half the power and only a fraction of the time.. I predict these things will put hvac ducted systems out of business in the near future..
I was able to install both of them myself .. Purchased romex, breaker , and cut off box from amazon , ran the wires to the panel.. I had never done it before but after a few youtube videos and my desire to save a few hundred dollars the install was flawless.. I also purchased a 3 inch hole saw for my cinder block walls..
all that being said.. I dont think you will need the dual zone units if you do what i did.. place a 12k on one end of the house and a 24k on the other you will be amazed.. - oh and this is a very good deal.. i paid 1650 for my 24k from ingrams air and water.
I'm going to outline a simple example of what could happen and why the code is there:
Let's say you install the unit using the included rubber cable to the inside unit as many are doing. Or use unprotected wiring. Along comes a gardener, gutter repairman, kid, whatever and they accidentally nick that cable. Or you nick it during installation when placing the inside unit against the wall. Now the isolation of the wires is compromised and electricity WILL flow to other things. The breaker may not trip because it's not much current. It will take routes that are bizarre and hard to understand and it will do it instantly. And it will build up carbon tracking and do it more (i,e, fire).
Now lets say sometime in the future your kid is playing outside at the other corner of the house and he touches the downspout. Well the electricity may like the path of less resistance he is providing more than the wall and flow through them and possibly killing them instantly. This doesn't need to be a piece of metal, it could be a tree or anything in the right circumstances.
This is just one of many examples. If you're going to do this yourself please submit a plan and get a permit and inspections!
I'm going to outline a simple example of what could happen and why the code is there:
Let's say you install the unit using the included rubber cable to the inside unit as many are doing. Or use unprotected wiring. Along comes a gardener, gutter repairman, kid, whatever and they accidentally nick that cable. Or you nick it during installation when placing the inside unit against the wall. Now the isolation of the wires is compromised and electricity WILL flow to other things. The breaker may not trip because it's not much current. It will take routes that are bizarre and hard to understand and it will do it instantly. And it will build up carbon tracking and do it more (i,e, fire).
Now lets say sometime in the future your kid is playing outside at the other corner of the house and he touches the downspout. Well the electricity may like the path of less resistance he is providing more than the wall and flow through them and possibly killing them instantly. This doesn't need to be a piece of metal, it could be a tree or anything in the right circumstances.
This is just one of many examples. If you're going to do this yourself please submit a plan and get a permit and inspections!
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