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CAUTION: UV light is not visible to the human eye, but is harmful to eyes and skin.
UV light is comprised of electromagnetic radiation of wavelengths ranging from 100 to 400 nanometers (nm). The UV
spectrum is divided into four regions, which are designated vacuum UV, UV-A, UV-B, and UV-C. UV-C. Short-wave
ultraviolet occurs between 200-280nm and the optimum UV germicidal action is at 265nm. It has strong disinfection
ability to kill microorganisms by altering or disrupting their DNA or RNA without the need for chemicals.
IX. Installation with other Systems
It is common for UV Systems to be installed alongside other additional filtration systems for different applications.
Below are some example scenarios. NOTE: These are just guidelines and may be different depending on the
requirements of the job. Check with the client or supplier as to which type of installation order is required for non-
standard installations.
Sediment & Carbon Filters:
Sediment filters can reduce sediment as fine as 1 Micron, whilst Carbon Block filters can
reduce sediment as fine as 0.5 Micron. Carbon Blocks are also particularly effective as adsorbing taste and odour
molecules, and can provide a slight improvement in water clarity.
Calcite Filter:
Calcite filters are usually installed on Rainwater Systems to counteract the pH of acidic rainwater
which usually causes green/blue staining in the water or on fixtures. The calcite filter is usually installed as stage 1 as
it is a back washable media vessel, followed by the Big Blue System.
Water Softener:
Water softeners are common on both mains water and also bore water installations. For bore water
installations it is best to check with the supplier as to the installation position and any other requirements such as
flow controllers and float switches. The most common bore water installation will go in order of Bore
Softener
Tank
Calcite Filter
20” x 4.5” Big Blue Filter System (Se Carbon)
H7-90-AT UV System
House
Installation Introduction
I. Site Preparation
The H7-90-AT UV System will need to be installed on the water line between the water supply and your house. Ideally
if you can find where the cold water enters the building or tees off to the HWS. Either way, you will need access to
modify the pipe work to install the system in place.
Allow enough room to install a bypass for the filtration system. If something goes wrong with the system, or during
maintenance you can still get a water supply to the house. Below is an example of a bypass installation.
NOTE: The H7-90-AT UV System is not weatherproof and all components (including the chamber and
electronics) must be shielded from direct sunlight and weather extremes such as rain, storms, and frost.
