Catalogue

132 RLC-PRC029-EN
Mechanical Specifications
General
Exposed metal surfaces are painted with air-dry beige, direct-to-metal, single-component paint.
RTWD units ship with full operating charges of refrigerant and oil. RTUD units ship with a full
operating charge of oil and a nitrogen holding charge. Molded elastomeric isolation pads are
supplied for placement under all support points.
Trane air-cooled condenser structural elements and fan sections are galvanized steel.
Compressor and Motor
The unit is equipped with two semi-hermetic, direct-drive, 3600 rpm 60 Hz (3000 rpm 50 Hz) rotary
compressors that include a load/unload valve, rolling element bearings, oil filtration device and
heater. The motor is a suction gas-cooled, hermetically sealed, two-pole squirrel cage induction
motor. Oil separator device is provided separate from the compressor. Check valves in the
compressor discharge and lube oil system and a solenoid valve in the lube system are also
provided.
Unit-Mounted Starter
The unit is supplied with a UL 1995 indoor type enclosure with top power-wiring access and three-
phase, overload protection. The starter is available in a wye-delta or across-the-line configuration,
factory-mounted and fully pre-wired to the compressor motor and control panel. A factory-
installed, factory-wired 820 VA control power transformer provides all unit control power (120 Vac
secondary) and Trane CH530 module power (24 Vac secondary). Optional starter features include
circuit breaker, high fault panel with circuit breaker, or mechanical, non-fused disconnect.
Evaporator
Dual circuited, shell and tube falling film evaporator design is used. Seamless internally finned,
copper tubes are mechanically expanded into tube sheets and mechanically fastened to tube
supports. Evaporator tubes are 1.0 inch (25.4 mm) diameter on standard efficiency chillers and 0.75
inch (19.05 mm) diameter on high and premium efficiency chillers. All tubes can be individually
replaced.
Shells and tube sheets are made of carbon steel. Designed, tested, and stamped in accordance with
ASME code. The evaporator is designed for refrigerant-side/working-side pressure of 200 psig
(13.8 bars).
All water pass arrangements are available with grooved connections with 150 psig (10.5 bars)
waterside working pressure. Waterside shall be hydrostatically tested at 225 psig (15.5 bars).