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System Sizing
All CALMAG YORKSHIRE LIMITED UV systems are rated for a specific flow rate under specific water quality
parameters. The equipment has been designed to ensure that the appropriate dose will be delivered provided all
parameters are followed. PLEASE NOTE that the flow rate for each system can be higher or lower than what the
system is rated for however this will change the dose level that the system will deliver. A lower flow is not a
concern as the dose will increase however a higher flow rate will decrease the dose and therefore compromise the
microorganism inactivation.
It is important to know the maximum flow rate that your water system delivers. If you do not have this
information you can simply fill a 1 gallon bucket with water and time how long it takes to fill up. This will be the
maximum flow rate for the home. The appropriate Calmag UV unit should then be chosen.
PLEASE NOTE: It is always better to oversize your system then to undersize. For example, if your pump delivers 60
litres per minute it is recommended to install the CALULTRA 79 UV unit. There will be occasions where your home
is using water at the pump’s maximum capacity.
Location
Step 1: Find a suitable location to mount the UV
unit. In choosing your location ensure the
controller is located within 5 feet of a ground
fault circuit interrupter (GFCI) and that there is
easy access to the main cold water line prior to
any branch lines and before the hot water
heater. If you have any other water treatment
equipment, such as a water softener or water
filter, ensure that the UV is the last piece of
treatment equipment. PLEASE NOTE: All
CALMAG YORKSHIRE LIMITED UV disinfection
systems are intended for indoor use only as they
should not be exposed to the elements.
Step 2: Your system includes mounting
hardware for both the UV unit and the
controller. If the supplied fittings are not
compatible with the structure in which you are
mounting the device, please ensure you use the
correct fittings.
Step 3: To facilitate lamp removal, ensure there
is enough space at the lamp connector end to
safely remove the UV lamp and/or quartz sleeve
(a space equal to the length of the unit will
suffice) (see Figure 1.).
Figure 1. Lamp Removal Spacing