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2 STANDARD FEATURES—2 & 3 TON SYSTEMS
2.1 Evaporator Section - Split Systems
The evaporator section is designed for ceiling installation. The cabinet and chassis are constructed of
heavy gauge galvanized steel. The unit can be serviced using only one side increasing its versatility in
mounting locations. Mounting brackets are factory-attached to the cabinet. Internal cabinet insulation
meets ASHRAE 62.1 requirements for Mold Growth, Humidity & Erosion, tested per UL 181 and ASTM 1338
standards.
The evaporator section includes the evaporator coil, R-407C unit charge, filter-drier, factory-mounted
disconnect switch, two-speed direct-drive blower assembly and microprocessor control with wall-mounted
control box. The unit is provided with supply and return air openings for field-supplied ducting or
supply/return plenum. Evaporators can be configured with canister humidifier and/or reheat. An indoor or
outdoor condensing unit must be selected for each evaporator.
2.2 Condensing Unit Section—Split Systems
2.2.1 Indoor Centrifugal Fan Condensing Units
Indoor Air-Cooled Centrifugal Fan Condensing Units include scroll compressor, factory-mounted
disconnect switch, condenser coil, R-407C unit charge, belt-driven centrifugal blower assembly,
high-pressure switch, Liebert Lee-Temp™ head pressure control system, hot gas bypass and liquid-line
solenoid valve. Unit must be mounted indoors. Condensing unit is designed to use outdoor air with
temperatures ranging from -30°F to 95°F (-34°C to 35°C).
2.2.2 Outdoor Prop Fan Condensing Units
Outdoor Prop Fan Condensing Units include scroll compressor, condenser coil, R-407C unit charge, prop
fan, liquid-line solenoid valve, high pressure switch, Liebert Lee-Temp head pressure control and hot gas
bypass. Condensing unit is designed for outdoor locations with operating ambients ranging from -30°F to
95°F (-34°C to 35°C).
2.2.3 Indoor Water/Glycol Condensing Units
Indoor Water/Glycol Condensing Units includes scroll compressor, R-407C unit charge, factory-mounted
disconnect, coaxial condenser, hot gas bypass, high head pressure switch and two-way water regulating
valve designed for 150psi (1034.3kPa). Condensing units can be used on either a water or glycol cooling
loop.
2.3 Chilled Water Units
Chilled Water Units are designed for ceiling installation. The cabinet and chassis are constructed of heavy
gauge galvanized steel. The unit can be serviced using only one side increasing its versatility in mounting
locations. Mounting brackets are factory-attached to the cabinet. Internal cabinet insulation meets
ASHRAE 62.1 requirements for Mold Growth, Humidity & Erosion, tested per UL 181 and ASTM 1338
standards. Chilled water models are self-contained and include a chilled water coil, two-speed, direct-drive
centrifugal blower, factory-mounted disconnect switch and two-way, slow-close motorized valve. Design
pressure is 300psi (2068kPa), 60psi (414kPa) close-off differential.
Vertiv | Liebert Mini-Mate2—2 and 3 ton Technical Data Manual |
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