6
There are multiple standard configurations for field piping and wiring of Water Saver systems based on the evaporative system
design and layout.
x
EWS piped directly to a single evaporative unit (see Figure 5)
x
EWS piped to a makeup water tank with a single evaporative unit (see Figure 6)
x
EWS piped to a makeup water tank with multiple evaporative units (see Figure 7)
Each evaporative unit must be equipped with an Electronic Water Level Controller (EWLC). The EWLC starts Water Saver
operation when makeup water demand is sensed and stops operation when demand is satisfied (see Figure 5). If the system
uses a makeup tank (supplied by EVAPCO), the EWLC (supplied by EVAPCO) on the tank will start and stop Water Saver
operation (see Figure 6 or Figure 7). Makeup water bypass piping and control valve are supplied and field installed (by others)
and are required to ensure the evaporative unit(s) will always have makeup water available.
Figure 5: EWS Field Piping/Wiring for Direct Feed to Single Evaporative Unit
Design Considerations
S
EWS
EVAPORATIVE UNIT
MAKE UP
BYPASS
CLEAN OUTLET, PIPE TO PROCESS
FLUSH OUTLET, PIPE TO DRAIN
(NOT IN VIEW)
EWS CONTROL
PANEL
WIRE TO EWLC
POWER AND CONTROL WIRING
E
W
L
C
