Series R Helical Rotary Liquid Chiller - Page 615

Clear Language Display Panel

Factory mounted to the door of the control panel, the operator interface shall have a 16 button keypad for operator input and a two line by 40 character display screen. A chiller report, refrigerant report, compressor report, an operator configurable custom report, operator settings, service settings, service tests, and diagnostics may thus be accessed. All diagnostics and messages shall be displayed in "clear language."

The data contained in the Chiller Report, Refrigerant Report, and Compressor Report shall include:

• All water temperatures and setpoints
• Current chiller operating mode
• Diagnostic history
• Control source (i.e. local panel, external source, remote BAS)
• Current limit setpoint
• Outdoor air temperature (optional)
• Saturated refrigerant temperatures and pressures
• Compressor starts and hours running
• Line currents
• Line voltages (optional)
• Refrigerant detection external to chiller in ppm (refrigerant monitor not supplied by chiller manufacturer)
• Approach temperatures Mechanical Specification

All necessary settings and setpoints shall be programmed into the microprocessor controller via the keypad of the operator interface. The controller shall be capable of receiving signals from a variety of control sources (which shall not be mutually exclusive — i.e. any combination of control sources can coexist simultaneously) and shall be capable of being programmed at the keypad as to which control source has priority. Control sources can be:

• the local operator interface (standard)
• a 4-20 mA or 2-10 VDC signal from an external source (interface optional) (control source not supplied by chiller manufacturer)
• Tracer ® or Tracer Summit ™ (interface optional) (Tracer and Tracer Summit supplied by Trane)
• Generic BAS (interface optional) (control source not supplied by chiller manufacturer)

The control source with priority shall then determine the active setpoints via the signal that is sent to the control panel.

Unit Mounted Starter

A NEMA 1 type enclosure with top power wiring access and three-phase solid-state overload protection. Starters shall be available in a Wye-Delta configuration. The starter shall be factory mounted and completely prewired to the compressor motor and the control panel. A factory installed and wired 600VA control power transformer provides all unit control power (120 VAC secondary) as well as UCP2 module power (24 VAC secondary). Optional starter features include: Circuit breakers and mechanical non-fused disconnects. Worldwide Applied Systems Group The Trane Company 3600 Pammel Creek Road La Crosse, WI 54601-7599 www.trane.com An American Standard Company

An American Standard Company