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Liebert CSU3000
2 Guide Specifications
2.0 PRODUCT
2.1 STANDARD FEATURES / ALL SYSTEMS
2.1.1 Cabinet and Frame Construction
The frame shall be constructed of heliarc-welded tubular steel. It shall be painted using the autophoretic
®
coating process for maximum corrosion protection. The exterior panels shall be insulated with a
minimum of 1", 1 1/2 lb. density fiber insulation. All panels shall have captive, 1/4 turn fasteners and
shall be removable for service access.
The main unit color shall be ________, and the accent panel color shall be ________. The exterior panels
shall be powder coated.
2.1.2 Coolant Piping
The internal coolant piping shall include: isolating valves for each module, an expansion tank, water fill
connection, pressurization connection and liquid-level sight glass; a circulating pump which shall provide
______ GPM at ______ feet of water total head; and a discharge check valve to prevent back flow.
The supply and return connections shall be 2 1/8" O.D. copper for connection to RR or ES header
assemblies.
2.1.3 High Voltage Electric Panel
Each chiller module shall have a separate, self-contained high voltage electric panel. Each shall include a
non-automatic, molded case circuit breaker that can be operated with the panel cover closed. The
disconnect shall include a decorative trim to match the exterior trim of the unit. Each electric panel shall
include starters, contactors, relays, transformers and dual-element fuses that protect each high-voltage
circuit in the system. The electric panel shall be wired with one common electrical line connection.
2.1.4 Solid-State Control System
Each of the solid state control systems shall be powered from separate, non interconnecting 24 volt
power sources. Each chiller module control system shall include the following: Start/Stop button, Silence
button for the audible alarm; Manual reset circuit breakers; Back-lighted monitor panel (no message is
visible until lit.)
The monitor panel shall display operating modes (Pump On, Cooling On) in white and alarm conditions
in red. Alarm messages remain lit until the malfunction is corrected but the audible alarm may be
silenced. If a second alarm condition occurs, the audible alarm shall sound again. The alarm panel shall
activate with the following conditions:
• No Water Flow
• Low Water Temperature
• High Water Temperature
• High Compressor Head Pressure
• Loss of Power