Water Quality Requirements; Installation - Rainfresh R519 Mode D'emploi

(C) WATER QUALITY REQUIREMENTS
The unit should only be operated with water that meets the following minimum criteria:
o Turbidity/Suspended Solids: Less than 5 PPM (mg/L). Ideally less than 1 NTU (Nephelometric Turbidity Unit). A
5 micron sediment filter or better must be installed before the UV system at all times (included with model
R830F). We recommend Rainfresh Model FC150 or FC100 (5 micron sediment filter and housing assembly). If the
feed water has fine sediment, a finer pre-filter (1 micron or smaller) may be used. If the water has very high
turbidity, a back-washable multi-media filter is recommended along with a cartridge type filter.
o Hardness: Less than 7 GPG (120 mg/L). Hard water causes scale build-up on the quartz sleeves thereby reducing
the UV transmittance in the water and in turn reduced performance. The UV system will work with hard water for
a short time after which the scale build-up on the quartz dome will cause reduced disinfection performance
(unsafe condition). It is therefore recommended that, for hard water, a water softener should be installed prior
to the UV system.
o Iron & Manganese: Iron less than 0.3 PPM (mg/L) and Manganese less than 0.05 mg/L is desirable. At higher
concentrations, a suitable water conditioner (e.g. an Iron Filter or Greensand filter) should be installed prior to
the UV system to prevent iron build-up on the quartz dome that can cause insufficient disinfection.
o Tannins and Colour: Water with tannins or colour has low UV transmissivity that reduces UV system
performance. The UV system will not work if the water has tannins or colour. A tannin-removal system should be
installed for proper disinfection
If you are unsure of your water quality, Rainfresh can test your water quality at no charge. Details at: www.rainfresh.ca
(D) INSTALLATION
INSTALLATION NOTES AND CAUTIONS
o The Rainfresh UV Water Disinfection System is designed for installation on the cold water line only at the point of
entry (POE). For installation in the Province of Quebec, install the R519 to serve a max of 1-2 outlets and the R830
and R830F to serve a max of 2-3 outlets only, but not serving majority of the premises.
o The system requires a constant power supply of 110V AC.
o It is strongly recommended to have a dedicated electrical circuit for the UV system. A CSA or equivalent certified
surge protector must be installed to protect the ballast from electrical surges. We recommend surge protector
rated for a clamping voltage of less than 400 Volts, response time of less than one nanosecond, and energy
absorption of at least 600 Joules.
o The R830/R830F & R519 UV systems have been designed for maximum water flow rates of 8 US GPM (30 liters
per minute) and 5 US GPM (19 liters per minute) respectively. If higher flow rates exist occasionally, it is
recommended that an 8 US GPM flow restrictor (Rainfresh model FR8K) be installed at the inlet port of model
R830 & R830F, so that the flow rate through the UV does not exceed the rated flow rate. Likewise, for UV model
R519, a 5 US GPM flow restrictor (Rainfresh model FR5K) is recommended.
o The system should be installed indoors in a protected area where the temperature does not fall below 4°C (40°F).
o For optimum performance, the system should be wall-mounted in a vertical position with the lamp connector at
the top. The water inlet is at the bottom and the outlet at the top, as shown in Fig. 1. The system can be installed
horizontally but cannot be drained fully in that position and there is a higher probability of breaking the quartz
dome during service.
o It is highly recommended to install bypass piping with a shut-off valve around the unit. This way you can still have
water in case you need to remove the UV unit for service.
o Provide a minimum clearance of 2 feet above the unit for lamp replacement.
o Use only Teflon tape for all connections. Do not use any other sealant on the threads.
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