Trane CCAF, CGWF manual Features and Benefits Options, Remote Input Options

Features and

Benefits Options

Options

Hot Gas Bypass: Hot gas bypass option allows unit operation below the minimum step of unit unloading. The regulator valve, along with all associated refrigerant piping and electrical wiring, are factory installed and tested on one refrigeration circuit. Unit does not start in hot gas bypass mode. If the unit operates in bypass mode for 30 minutes without a call for cooling, it will pump down and shut off. Unit starts immediately upon a further call for cooling.

Chilled Water Reset: Front panel settable control, microprocessor based control strategy, and field-installed sensor for ambient temperature based reset are included in this option. Return water reset sensor is standard, but panel controller and control strategy must be ordered as an option.

Tracer Summit Communication Interface: Permits bi-directional communication to the Trane Integrated Comfort system.

LonTalk LCI-C Communication Interface: Provides the LonMark chiller profile inputs/outputs for use with a generic building automation system.

Remote Input Options

Remote chilled water setpoint input (4-20mA/2-10Vdc), compressor inhibit which locks out the second compressor on each circuit reducing the kW draw or both.

Control Output Options Programmable relays provided to indicate: Compressor running, maximum capacity, chiller limit mode, warning (informational diagnostic), alarm latching (shutdown diagnostic), alarm nonlatching (shutdown diagnostic), alarm latching or nonlatching.

Ice Making Controls: In ice-making mode, the unit will operate fully loaded in response to jobsite supplied contact closure. Ice making will terminate when the return fluid temperature falls below an adjustable setpoint (minimum 20°F [-6.7°C]). When not in ice making mode, unit will provide modulating capacity control based on leaving chilled fluid temperature (20-55°F)[-6.7°C to 12.8°C].

Unit Mounted Disconnect Switch: Non- fused molded case disconnect switch factory installed in control panel for disconnecting main three-phase power.

Isolators: Neoprene-in-shear isolators for field installation under unit frame.

Sound Attenuation: Factory-installed acoustical attenuation for applications where extremely low sound level is required.

Water Regulating Valves: Field-installed valves provide means for control of head pressure.

Outdoor Temperature Sensor: Field- installed outdoor temperature sensor with an adjustable setpoint provides means for low ambient lockout.

Condenser Water Temperature Sensor: Factory installed temperature sensor provided for microprocessor display.

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