Hydrotech UVSS Series Ultraviolet Water Purification System User Manual

Page 4

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The use of a bypass assembly is recommended in case the system requires
‘off-line’ maintenance. If this is the case, it must be noted that the system will
require supplementary disinfection of the distribution system if any water is
used during this bypass condition. In addition, during bypass, the water will
NOT be disinfected until such time as the system is sanitized and returned to
service. Please refer to the complete disinfection procedure as outlined on
page 4 of this document. If the water is to be offline, the water must be boiled
for twenty minutes prior to consumption.


Select a suitable location for the disinfection system and its related compo-
nents. As it is recommended to install a ground fault protected circuit (GFCI),
make sure that this is taken into consideration prior to any installation. The
system can either be installed vertically (inlet port at the bottom) (Figure 1A),
or horizontally (Figure 1B), however the vertical installation is the most pre-
ferred method. When selecting a mounting location, you must also leave
enough space to allow for the removal of the UV lamp and/or quartz sleeve
(typically leave a space equal to the size of the reactor chamber itself).

Pre-Installation Instructions

The figure below shows the proper water flow for horizontal or vertical instal-
lation. Make certain that your unit and the inlet and outlet pipes
are in the right position for either horizontal or vertical installa-


Mount the system to the wall using the supplied clamps. Various connection methods can be used to connect the water
source to the system, however union type connectors are recommended. The use of a flow restrictor device is strong-
ly recommended when installing your system in order to maintain the manufacturers rated flow rate. The flow restric-
tor should be installed on the outlet port and is designed to be installed in one direction only. Ensure that the flow of
the water matches the flow direction as indicated on the flow restrictor (Figure 1C). DO NOT SOLDER CONNECTIONS


Mount the controller horizontally on the wall, near the reactor chamber. Ideally place the controller above the reactor
and away from any water connection point, to prevent any water from potentially leaking onto the controller by means
of a leak at a connection point or a ‘sweating’ system. Make sure you allow for a ‘drip-loop’ (Figure 1D) on the lamp,
sensor and power cord (prevents water from potentially entering the controller). Affix the green ground wire to the
grounding lug at the top of the reactor vessel and securely fasten with the lugnut provided (Figure 1E).


Install the UV lamp and sensor as outlined on pages 5-6.


When all plumbing connections are made, slowly turn on the water supply and check for leaks. The most likely cause
for leaks is from the o-ring seal. In case of a leak, shut water off, drain cell, remove the retaining nut, wipe the o-ring
and threads clean and re-install.


Once it is determined that there are no leaks, plug the system into the ground fault interrupter circuit, and check con-
troller to ensure the system is operating properly. The controller is designed to detect both power to the system and
lamp illumination. It is important to NEVER LOOK DIRECTLY AT THE GLOWING UV LAMP.


Allow the water to run for a few minutes to clear any air or dust that may be in the reactor.

PLEASE NOTE: When there is no flow, the water in the cell will become warm, as the UV lamp is always on. To remedy
this, run a cold water tap anywhere in the house for a minute to flush out the warm water.

Figure 1A

Figure 1B


Clearance Equal


Unit Overall Length

Unit Overall Length

Min. Clearance Equal

to Unit Overall Length


Overall Length

IMPORTANT: For vertical installation, the inlet is at
the bottom and the outlet is near the top of the disin-
fection chamber. For horizontal installation, pay
careful attention to the diagram for flow direction.

Correct Installation

Incorrect Installation

GFCI Receptical