I bought a small (9k BTU) Daikin inverter mini-split and am installing it myself. It appears to be quite simple to setup and the only item I will ask my local HVAC to do is the condenser evacuation and lineset purge. Since the 410a is preloaded in outside unit and I will use the preset length (yes, measured it) of 15ft, there should be no other changes.

I've identified the location on wall, brackets are up but before I proceed any further, is this really all there is to it or any last words of wisdom before I proceed further?

For the outside unit, I poured a small concrete pad and located it under house soffit so it's a little more protected from rain but it will get a bit of sunshine during the midday overhead exposure.

Drilling hole through wall was not a problem either, just punched a 3" hole into concrete block wall. Is the 3" a very precise measurement or is it actually required a bit larger for the drain and connecting lines?

Finally, any comments from other Daikin owners? Any issues with these units?

 

happy to report installation was simple and unit runs nicely and quietly

 

I have a ductless split in my office, a Bryant, Ive also installed quite a few LG's and Misubishis, only problem Ive ever found with them is sometimes you can get water to drip down the wall from a plugged drain line....

 

I am curious as to your total time it took to install. I am looking at buying one for a Florida room I am getting new windows and insulation in, and am trying to see how much someone would charge to install.

 

last one I did , tubing had flare connections to condenser and evaporator, pre insullated line set, electrical was ready so about 2.5 hours maybe a hair more..

 

I am about to install a 1 Ton mini-split and wonder if anyone has ever used a Venturi Air Pump (uses 90 psi shop air) to evacuate the lines?

 

An air operated vacuum pump is not able to achieve a low enough vacuum to perform its intended function in a refrigeration system.
They are falsely advertised by some makers as being suitable for a/c use but are not.
A suitable pump and micron gauge need to be used which makes the cost impractical for limited use.

You are likely aware and I will point it out for those that do not know that diy sealed system work is not permitted unless you are certified and qualified.
This site does not offer or promote advice on diy installs