How to Install Multi Zone Mini Split System (Cooper&Hunter) 2020

How to Install a Ductless Single or Multi Zone Mini Split A/C. This step by step HVAC tutorial features a Cooper&Hunter Sophia Series multi split system.

HVAC Tutorial: Step by Step instructions on how to disconnect Central Air Conditioning and replace it with a Multi Zone Ductless Mini Split System. Though Mini Splits are relatively new to the U.S., they have been the popular heating and cooling solution in Europe for decades. As consumers become more aware of their many advantages, including affordability, ease of installation, and energy-efficiency, Mini Splits are gaining popularity in the American market.

Tools Needed for Multi Split Installation:
A Level
Drills
Box Cutter
A Flaring Tool
A Hammer Drill
A Nitrogen Tank
A Vacuum Pump
A Multi Meter
A Mechanical Manifold Gauge Set
Wrenches
A Wire Cutter
A Screw Driver
An Allen Key
And a Tube Bender

Cooper&Hunter Ductless Mini Split Air Conditioning Units installed:
- One 36,000 BTU/h Outdoor Unit
- Two 9,000 BTU/h Indoor Wall Mounts
- One 12,000 BTU/h Indoor Wall Mount

The Cooper&Hunter Ductless Sophia Series Split system utilizes inverter technology and offers a variety of features including Wifi control options, Anti-Corrosive GoldFin coating, Sleep mode, Timer, Refrigerant Leakage Detection, and a Self-Diagnosis Function.

Cooper&Hunter is a global manufacturer of HVAC equipment with a wide product line, ranging from Mini-Splits, TTWs, PTACs, and Portables, distributed in 50 countries worldwide. The “C&H” brand is well on its way to becoming a household name, as the mark itself has come to represent quality and innovation matched with sleek design and great prices.

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To qualify for Cooper&Hunter’s Limited Warranty, products must be installed by a licensed HVAC Technician. Warranty Registration must be completed within 60 days of installation.

[bobbyz]

That was a great overview of a multizone install. Not a lot of fluff. Good basic information. Thanks for posting this.

[sergiodoordie]

There's not a lot of content on the multi zone mini splits

[esmailkhodabande]

Nice and clean, thanks for the aducation

[richardmckrell]

Also need a micron meter and torque wrench for fittings.

[raptorms]

Except you could install zones aka electronic dampeners and control to heat or cool these zones to individual preference as well much cheaper than the 3000 dollars in equipment you'll need on a mini split. Not bashing the mini split cause I think theyre great in apartments with no ducts and not much room for thrm

[tedlane]

How did the lines get from the multiple indoor units to the outdoor compressor?

[User-pbpd]

When vacuuming, did you just use an adapter or do I need to buy a core valve removal tool?

[Troy-Moses]

Thanks for the very well explained presentation...

All that I have seen with the ductless system, so far, have been retrofits; but I am yet to see a clean installation for a new project. Bearing that in mind, the mounting walls always seem to be exterior-walls-preferred.

In new construction, mounting on an interior partition could offer more flexibility; so my question is: Is a 3" PVC pipe located in a 3-5/8" stud wall sufficient to run all those lines from each a/c head? or can each of those lines just freely run in the walls uncovered? And lastly: If then running those lines under a slab-on-grade, what diameter PVC chase would you recommend as a minimum?

I suppose that with proper planning the condensate drain line could follow is own path, or even drain to indoor plumbing.

[doc]

my air con has a humming sound that osilates up and down with only a few second intervals, what is causing that? thx. btw it is extremely annoying and I cant sleep with the air con running. Also the condensation pump makes a hell of a noise everytime it turns on.

[TomNardoneMillionaireMailman]

is A & B connected together through the compressor? Or does A have to be vacuumed separate from B? If A springs a leak, will B lose its Freon also?

[celala]

can someone help me only one indoor unit is working, the other two aren’t what did i do wrong

[paulbeltran]

Your supposed to use a torque wrench when connecting the linesets.

[chrisluciane]

are you able to pull a vacuum from each individual line (zone A, B, C ..etc) independently of the the main line before opening the refrigerant? example pull a vacuum from Zone A open the low and high pressure, then open the main line to the unit to feed the refrigerant.

[MrPaulrak]

I'm looking to replace many old window mount air conditioners with a muti-zone mini split system in a single family home. How do you select system size and the size of the units for the individual rooms? My room sizes vary greatly.

[robertm]

From the looks of it, will all three rooms need to have a separate hole drilled out to the condenser, or is it possible to stuff the three lines into one hole with a bigger diameter? If that’s okay, which is better for looks?

[tigeroswald]

It's winter here, Just finished install. Can I use the heater option before vacuuming testing and opening the valves for the a/c

[jmarasco]

Does the kit come with the connectors to re-flare the lines?

[mattysnap]

Seems like a common error even in the Kelvinator really annoying then after diagnostics and parts you have paid for a new one it's discusting.

[Quagmire]

Do the multizone condensers share the refrigerant across all zones? If you pull the vacuum from one zone, is it also drawing down on the other zones too?

[michaelcostello]

You can have a zones on a ducted unit with individual control ?? by using motorised valves. You never mentioned that in your discussion. Also these units are noisey.