Features and Benefits
Standardized Components
•Components are placed in the same location on all Precedent™ units. Familiarize yourself with one Precedent and you are familiar with every Precedent.
Easy Access LowVoltageTerminal Board
Precedent’s LowVoltageTerminal Board is external to the electrical control cabinet. It is extremely easy to locate and attach the thermostat wire.This is another cost and time saving installation feature.
LowVoltage Connections
The wiring of the low voltage connections to the unit and the zone sensors is as simple as
Single-Side Service
Flexible Applications
•Only two roof curbs for the
•Standard or High Efficiency Cooling
•Electromechanical or ReliaTel microprocessor controls to meet either the simple or the more complex application.
•Airflow is outstanding.The Precedent can replace an older machine with old ductwork and, in many cases, improve comfort through better air distribution.
•Belt or direct drive — standard or oversized supply fan motors meet a wide airflow range.
•Precedent offers ultimate flexibility. Options and components are not pre- packaged at the factory. Units are built to order in our standard “shortest in the industry” ship cycle time.
Micro Controls
Several years ago,Trane was the first to introduce microprocessor controls into the Light Commercial Market.That design, along with immeasurable experience, has provided the technology forTrane’s
ReliaTel™ Micro:
•Provides unit control for heating, cooling, and ventilating by utilizing input from sensors that measure outdoor and indoor temperature.
•Improves quality and reliability through the use of
•Prevents the unit from short cycling, considerably improving compressor life.
•Ensures that the compressor will run for a specific amount of time, which allows oil to return for better lubrication, enhancing the reliability of the compressor.
•Reduces the number of components required to operate the unit, thereby reducing possibilities for component failure.
•Eliminates the need for
•Requires no special tools to run the Precedent unit through its paces during testing. Simply place a jumper between Test 1 andTest 2 terminals on the Low VoltageTerminal Board and the unit will walk through its operational steps.The unit automatically returns control to the zone sensor after stepping through the test mode a single time, even if the jumper is left on the unit.
•As long as the unit has power and the LED is lit, the Micro is operational.The light indicates that the Micro is functioning properly.
•Features expanded diagnostic capabilities when used withTrane’s Integrated ComfortTM Systems.
•As an energy benefit, softens electrical ‘’spikes’’ by staging on fans, compressors and heaters.
•The Intelligent Fallback or Adaptive Control is a benefit to the building occupant. If a component goes astray, the unit will continue to operate at predetermined temperature set points.
•Intelligent Anticipation is a standard feature of the Micro. Functioning constantly, the Micro and zone sensors work together in harmony, to provide tight comfort control.
Electromechanical Controls
•For the simpler job that does not require a building automation system, or expanded diagnostics capabilities, Precedent offers electromechnical controls. This
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