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Chilled Water System—Standard and Optional Features
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5.0 CHILLED WATER SYSTEM—STANDARD AND OPTIONAL FEATURES
5.1 Chilled Water System—Standard Features
5.1.1 Cooling Coil
The chilled water cooling coil is designed for closed-loop applications using properly maintained
water. It is constructed of copper tubes and aluminum fins. To ensure quality, the V-frame coil is
manufactured to the highest standards in the industry.
5.1.2 Modulating Motor
The flow of chilled water through the cooling coil is controlled by an electronic modulating motor. The
microprocessor control will activate the motor when a need for cooling or dehumidification exists. The
motor will position the valve to precisely match the needs of the conditioned space.
5.1.3 Line Insulation
All chilled water piping within the Liebert Challenger ITR is fully insulated to assure full system
capacity and prevent condensation.
5.1.4 Three-Way Control Valve
The fully insulated control valve gives the conditioned space the precise cooling needed by electronic
equipment. Its unique design requires no overtravel linkages and never requires adjustment.
5.2 Chilled Water System—Optional Features
5.2.1 Chilled Water Flow Switch
The flow switch will activate the alarm system and/or shut down the system should the chilled water
supply be interrupted. The switch is factory wired and mounted in the chilled water valve compart-
ment.
5.2.2 High Pressure
For special applications, a high-pressure, modulating three-way or two-way valve can be provided.
The valve is designed for 400 psig (2758 kPa) water pressure.