subject: Fitting A New Air Conditioning Unit Into Your Home - Plan Carefully To Avoid Big Problems [print this page] When fitting a new air-conditioning unit to a property, the installer would usually attach the indoor and out of doors units to there needed location. Diverse types and styles are available which stick to the wall or ceiling.
An electrical engineer will install a power supply which feeds either the indoor evaporator or the out of doors condenser relying on model. An interconnecting cable is then installed between the 2 units which can enable the indoor unit to govern the outside unit functions.
Two copper pipes are then installed between the two units. Brazing is used to solder the pipe joints and not plumbers solder. During the brazing process the pipe is filled with oxygen free nitrogen to ensure no scale builds up inside the pipe when brazed. If scale build up occurs it may break off and block the pipes or permanently damage the compressor.
Last connections of the pipes to the indoor and outside units are achieved employing a copper flare connection, like those found on automobile break pipes. The flare connection can resist enormous pressures and when assembled properly won't leak.
The pipes are now charged with oxygen free nitrogen under pressure. This pressure is recorded and if it lowers over time there is a leak on the unit.
From experience we promote the oxygen free nitrogen remains in the pipes for at least twenty-four hours. Any changes over this period of time can suggest only 1 thing a leak.
When the pipes have been proved and do not leak the nitrogen is removed. The pipes are then connected to a vacuum pump which removes oxygen and condensable gasses such as water vapour from the pipes.
The final stage is to charge the refrigerant into the pipes and then commission the system.
Therefore can an air con unit be installed in a day? Well, yes it can.
The main problem with a single day installation is the time the pressure test is left for. Some very small leaks will not be detected unless the nitrogen is charged for at least 24 hours. If there is a leak, the refrigerant will leak and eventually the unit will run out of charge.
Its potency will slowly degrade till it ceases to function. As the refrigerant also contains oiling oil for the compressor, it may only be a matter of time till major compressor failure happens. If this may be credited to bad installation then any manufacturer guaranty will be void. Some units incorporate low pressure detection and will shut the compressor down before a failure happens but less expensive models available won't do this.
Our recommendation is to leave the pressure test for no less than twenty-four hours and use LG Air Conditioning units which have proved trustworthiness.
