Catalogue

136 RLC-PRC029-EN
Options
Insulation for High Humidity
The evaporator and water boxes are covered with factory installed 1.5 inch (38.1 mm) insulation.
Factory installed foam insulation is used on the motor housing, suction line, liquid level sensor, and
oil return system assembly (with its associated piping).
Isolators
Molded elastomeric isolators ship with the unit.
Low-Temperature Evaporator
Optimized compressors and oil cooler enable evaporator operation down to minimum leaving
water temperature of 10°F (-12.2°C).
Nitrogen Charge
Unit is shipped with a nitrogen holding charge in lieu of refrigerant (standard for RTUD).
Performance Tests
Performance tests are available to certify chiller performance before shipment.
Two-Way Condenser Water Regulating Valve (RTWD only)
For water regulation, a field-installed, 2-way butterfly-type (lug-style) valve, with integral electrical
operator and factory-mounted valve actuator, is available. The single-phase, dual frequency50 or
60 Hz, motor can be selected with 115 V (can be powered directly from control power transformer
at unit) or 220 V power. The 2-way valve is field-wired and controlled by the chiller regulating valve
control output. Valves are available in 3 and 4 inch (88.9 mm and 114.3 mm) sizes.
Seismic Rating
The unit will be seismically rated.
Water-to-Water Heat Pump
Optimized compressors, oil cooler and high condenser temperature control panel allows for
leaving condenser water temperatures up to 140°F (60°C). This option allows for entering
condenser water temperatures above 95°F (35°C). Condenser leaving water temperature control
option is required; the setpoint range is 80°F (26.7°C) to 140°F (60°C).
Electrical Options:
Across-the-Line Starter
Across-the-line starter is unit mounted with a UL 1995 gasketed enclosure.
Wye-Delta Starter
This option provides a reduced-inrush, unit mounted starter with a UL 1995 gasketed enclosure.
Wye-delta starters are standard with 200–230 V machines.
Circuit Breaker
A molded case standard interrupting capacity circuit breaker, factory pre-wired with terminal block
power connections and equipped with a lockable external operator handle, is available to
disconnect the chiller from main power.
High Fault Rated Control Panel with Circuit Breaker
A molded case circuit breaker, factory pre-wired with terminal block power connections and
equipped with a lockable external operator handle, is available to disconnect the chiller from main
power. The control panel has a higher short circuit rating as determined by UL 508.