eco-ATWB Marketing - Evapco

SAGE SYSTEM
EVAPCO’s
… Water and Energy
The EVAPCO eco-ATW closed circuit coolers utilize the optional
Sage 2® water and energy conservation control system which controls
Dry & Evaporative modes of operation. The eco-ATWE is provided
standard with the Sage 3® control panel which controls Dry, Water
Efficient and Evaporative modes of operation. The control system
operates by measuring and analyzing water inlet and outlet
temperature simultaneous with ambient dry bulb monitoring in
order to minimize the evaporative cooling mode of operation and
to save system water. The Sage can also be programmed to operate
with a water savings or energy savings priority.
The Sage Controller features a NEMA 4 enclosure with UL approval.
The panel also includes a 10" touch screen operator interface with
color display and a Modbus 485* data port for communication with
the building automation system. The data points are: Inlet
Temperature, Outlet Temperature, Dry Bulb Temperature, Basin
Water Temperature Sensor, Fan Run Time, Pump Run Time, VFD
Speed, Fan Motor Status – On/Off, Fan RPM, Pump Status – On/Off.
Standard Control Items
• A MODBUS 485* Port for the Building
Automation System
• Programmable Logic Control
• Fluid Inlet Temperature Sensor(s)
• Fluid Outlet Temperature Sensor(s)
• Basin Temperature Sensor(s)
• Ambient Dry Bulb Sensor(s)
• Variable Frequency Drive(s) for Fan Motor(s)
• Recirculating Pump Motor Starter(s).
• Main Disconnect
• Manual Bypass
• DC Power Supply for the PLC and
Instrumentation.
• Heater Package Controls w/ Contactor with
Overload Protection
• Control Power Transformer
• 5-Probe Electronic Water Level Control Package
• High Water Level Alarm Contact(s)
• Low Water Level Alarm Contact(s)
• Fan Motor: Space Heater Control(s)
Control for Optional Accessories
• Discharge Hood Damper Controls
• Vibration Switch Controls
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