Installation Of Split Air Conditioner

Split Air Conditioner Installation For Dallas Homeowners

Ductless mini-split systems are also often easier to install than other types of space conditioning systems. This makes it possible to cool rooms on the front side of a building house with the compressor in a more advantageous or inconspicuous place on the outside of the building.

This video shows how to install split type air conditioner.


Installation of a split type air conditioning unit.

Step 1: Install the compressor unit, Connect the lines and pull a vacuum on the lines.

After the compressor unit is installed outside, the refrigerant lines need to be connected using a spanner. These connections are made at the blower and compressor unit. They have to be secure and tight but not so tight to damage the threading. The excess tubing can be cut and the ends re-flared to allow the nuts to be used again but in this installation, I chose to simply loop the excess tubing behind the compressor unit.

Connect the vacuum pump via the manifold Gauge to the port of the compressor and open the low-pressure Gauge valve. The low-pressure hose (blue) goes to the compressor unit. The yellow hose goes to the vacuum pump. A vacuum pull for 30 minutes is needed to evacuate all the water vapor in the copper lines. You will see bubbles in the oil sight glass of the pump and mist briefly from the discharge of the pump.

Step 2: Braze the mechanical connections with solder.

I like to use electronics grade solder to hermetically seal the nuts on the ends of the copper lines. This guarantees zero leaks and long life of the system. My propane torch was used to carefully heat the nuts and apply solder to melt into the spaces and threads.

Step 3: Apply pressure and make the electrical connections.

At this point the valve for the low pressure Guage must be closed. The liquid (thinner) line valve is the first one to be PARTIALLY allowed open using an Allen key. Next is the gas valve to fully open. The manifold Gauge will register pressure. The vacuum pump can be removed.

Carefully and quickly disconnect the manifold from the compressor unit since refrigerant and oil will spurt out. Never remove the manifold without pressure in the lines since you don’t want water vapor being sucked back into the lines. Now FULLY Open the liquid line valve.

Installing A split Air Conditioner Is Important

The installation of the split air conditioners is the most important and crucial part. If it is done properly your air conditioner will give you optimum performance, but if it is not done properly you won’t get the desired cooling effect and there may be frequent maintenance problems. Call us (214) 238-8353 for your home service and repair needs.

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