Make Sure You Give Yourself Enough Time To Get That Air-con Unit Installed

When fitting a new air con unit to a property

, the installer would usually attach the indoor and out of doors units to there needed location. Assorted types and styles are available which stick to the wall or ceiling.

An electrician will install a power supply which feeds either the indoor evaporator or the outside condenser relying on model. An interconnecting wire is then installed between the 2 units which can enable the indoor unit to manage the outside unit functions.

2 copper pipes are then installed between the 2 units. Brazing is used to solder the pipe joints and not plumbers solder. In the brazing process the pipe is stuffed with oxygen free nitrogen to guarantee no scale builds up within the pipe when brazed. If scale build up happens it may break off and block the pipes or seriously damage the compressor.

Final connections of the pipes to the indoor and outdoor units are achieved using a copper flare connection, similar to those found on vehicle break pipes. The flare connection can withstand large pressures and when assembled correctly will not leak.

The pipes are now charged with oxygen free nitrogen under stress. This pressure is recorded and if it lowers over time there's a leak on the unit.

From experience we advocate the oxygen free nitrogen remains in the pipes for at least 24 hours. Any changes over this period of time can suggest just one thing a leak.

When the pipes have been proved and don't leak the nitrogen is removed. The pipes are then hooked up to a vacuum pump which removes oxygen and condensable gasses like water vapor from the pipes.

The final stage is to charge the refrigerant into the pipes and then commission the system.

So, can an air conditioning unit be installed in a day? Well, yes it can.

The primary issue with a single day installation is the time the pressure test is left for. Some miniscule leaks may not be noted unless the nitrogen is charged for no less than twenty-four hours. If there's a leak, the refrigerant will leak and finally the unit will run right out of charge.

Its efficiency will slowly degrade until it ceases to function. As the refrigerant also contains lubrication oil for the compressor, it will only be a matter of time until major compressor failure occurs. If this can be attributed to bad installation then any manufacturer warranty will be void. Some units incorporate low pressure detection and will shut the compressor down before a failure occurs but cheaper models available will not do this.

Our advice is to leave the pressure test for a minimum of twenty-four hours and use LG air-conditioning units which have proved trustworthiness.

by: Owen Nills

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