Can The Delta UV Unit Be Installed Below The Pond or Pool Waterline ?
– All Delta UV units can be installed below waterline, however the following should be considered when a below waterline installation is encountered. Except for the EA Series, all Delta UV units have a pressure switch installed that controls the ON/OFF cycle of the UV lamp when the circulation pump stops or starts. If a Delta UV unit is installed, as an example, in a vault below the waterline of the pond or pool, a static head of water pressure may be sufficient to cause the pressure switch to remain closed, which means that the UV lamp will remain lit at all times the UV unit is plugged into its power source. Contact Delta Ultraviolet or your Dealer for a different type of pressure switch (Part # 70-023010) that can be adjusted to allow for this static water pressure in the Delta UV unit’s wet chamber. Installation of this type of pressure switch takes only a few minutes and will restore the desired ability of the bulb to be turned OFF automatically when circulation pumping is interru
