GeoAir InstallationMuch of the system installation is no different to a conventional system except, the condenser loop is below ground and a heat pump replaces the outdoor unit.
1. Geothermal Loop
The geothermal loop is installed to depths of 90m and encased in a purpose-designed grout. Once the loop is installed it is connected to the heat pump and does not require any service or maintenance.
2. Heat Pump
Approximately the same size as a domestic dishwasher, the heat pump circulates the refrigerant through the geothermal loop and the internal fan coil unit. Location of the heat pump is typically where a conventional outdoor unit would be placed. The heat pump is connected to the internal fan coil, electrical and controls in the same way a conventional air conditioning unit is.
3. Fan Coil Unit
All internal installation is no different to a conventional ducted system. GeoAir can either train your air conditioning contractor or provide you with a suitably qualified installer.
4. In Ceiling Ducting
There are no changes to the installation of the system over a conventional ducted system. All ductwork remains the same as with a conventional system.
How is GeoAir™ Installed?
There are two stages of installation that are easily identified as ‘in ground’ and ‘above ground’. The difference with a geothermal system is that a large part of the installation occurs below ground. The GeoAir heating system is known as a “Direct Exchange”, or a “DX” geothermal system because it exchanges heat directly with the ground.
In Ground Installation
As the geothermal system requires a condenser loop below the ground to depths of 90m, a specialist-drilling rig is required on site to perform these works. The size of a large excavator, the drilling rig requires access to and on the site to perform works. The installation of one geothermal loop typically takes one day. Where the system requires more than one loop, we need to keep these at 8m separations and a trench would be needed to connect the loop to the heat pump (typically at 800mm depth). As with the geothermal loop, once installed, we do not need to access again.
The installation process involves drilling a well to depth. Once drilled, the geothermal loop is lowered into the ground and a geothermal grout is injected from the bottom of the well to the surface. This grout sets hard and acts as both a protector of the loop and a source of heat transfer into the surrounding ground. The loop never requires maintenance and is completely invisible.
Above Ground Installation
All of the above ground and internal works do not differ from a conventional system and can be performed by any air conditioning contractor. The GeoAir heat pump would typically be installed at the same location as the conventional outdoor unit with all electrical, refrigerant and control connections being the same.
The GeoAir Heat Pump is the heart of the system. This proprietary designed unit is the heart of the system, circulating refrigerant through the entire system. Significantly smaller than conventional systems, Australian designed and manufactured, the GeoAir heat pump is compact, safe and reliable.
Fan Coil Unit
A fan coil supplies the interior heated or cooled air through the home with air circulated via in ceiling ductwork. The GeoAir system uses a standard, Australian manufactured fan coil unit. Installed within the ceiling space, the fan coil unit circulates cooled or heated air through the building.
A GeoAir system is controlled using a wall mounted thermostat. If a more sophisticated level of control is required, the GeoAir system can be upgraded to be integrated into complex commercial building management systems.
Geothermal Ground Loop
The GeoAir geothermal loop is installed to a depth of 90m. This heat exchanger consists of supply and return lines that reject heat when operating in cooling mode and collect heat when operating on heating mode. Encased in a highly conductive grout, the Geothermal loop replaces the conventional outdoor condensor.