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Introduction
Figure 8.
Free-Cooling Diagram
Remote Drycooler (Optional)
Pump
(Optional)
Free-Cooling
Aqua-Stat
DX1 3-Way
Head Pressure
Control Valve
As the outside air temperature increases above the
ambient air switch-over setting, the fluid cooler controls
cycle back to typical DX heat rejection allowing the leaving
fluid control set point to increase above the prevailing
ambient conditions. The indoor unit's inlet fluid
temperature sensor monitors the fluid temperature and
deactivates the free-cooling mode once the fluid
temperature increases above the user adjustable enable
set point. The system compressors become the primary
cooling source and will activate as the return air
temperature increases above the set point.
14
Water / Glycol
Cooled
Condenser Coil
Refrigerant
Reclaim Port
Sight
Glass
3-Way Mixing
Modulating Valve
Scroll
Electronic
Compressor
Expansion
Valve
Refrigerant
Drier / Strainer
Free-Cooling
Coil
DX Cooling
Coil
SS-SVX002B-EN
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