6 RLC-SVX07A-EN
General Information
The RTUA 70 to 125 ton units are helical-rotary type, compressor chillers,
designed to operate with the RTCA, an air-cooled condenser. The RTUA is
designed for indoor installation. It has 2 independent refrigerant circuits, with
one compressor per circuit. It is assembled with the discharge line leaving the
oil separator capped, to enable the factory to leak-test, dehydrate and add oil
charge (excluding additional oil for needed field piping). The unit ships with a
nitrogen holding charge. The chilled water inlet and outlet openings are
covered.
The RTCA 70 to 125 ton air-cooled condensers are dehydrated, leak tested,
shipped with a nitrogen holding charge and electrically tested for proper
control operation before shipment.
The RTWA/RTUA series features Trane's exclusive Adaptive Control logic with
Clear Language Display. It monitors the control variables that govern the
operation of the chiller unit. Adaptive Control logic can correct these variables,
when necessary, to optimize operational efficiencies, avoid chiller shutdown,
and keep producing chilled water. An optional remote display is available to
monitor unit operation from a remote location.
Compressor unloaders are solenoid actuated and oil pressure operated. Each
refrigerant circuit is provided with filter drier, sight glass, electronic expansion
valve, and charging valves on the RTWA and RTUA units.
The shell-and-tube type evaporator is manufactured in accordance with ASME
standards. Each evaporator is fully insulated and is equipped with water drain
and vent connections.
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