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3 to 25 Tons

Precedent® Rooftop Units


3 to 25 Tons

Precedent® Rooftop Units

Next-generation performance with standard and optional features available across the board

  • 3-25 Tons
  • Gas/Electric, Electric/Electric, Heat Pumps & Hybrid Dual Fuel
  • Standard, High and eFlex™ Ultra-High Efficiency 
  • R-410A Refrigerant
  • Symbio 700 Unit Controller (6-25 Tons)

Engineered with contractors in mind

Precedent is easy to install and service, saving time and money from the very first day. Simplicity through engineering makes all the difference when it comes to commissioning and maintenance.  Standardized components across the line make ordering less confusing. And direct-drive motors need very little attention.

Designed to prioritize energy efficiency and decarbonization

Building owners who are facing stricter local and national building codes and regulations will find a readymade solution in Precedent.   And it provides outstanding part-load efficiency. Plus, our Heat Pump option uses all-electric, refrigerant-system cooling and heating to help meet building decarbonization goals.

Ready for the new era of connected buildings

Precedent units are capable of integrating into building automation and control systems for optimization, monitoring and data analysis. New models are equipped with the Symbio® 700 controller for improved usability, automated optimization. 

Precedent Models

Electric/Electric & Gas/Electric

Standard Efficiency​​ High Efficiency​​ Ultra High Efficiency  (eFlex)​​ 
Models​​ Electric/Electric (TS*) & Gas/Electric​ (YS*) Electric/Electric (TSJ) & Gas/Electric (YSJ)​​ Electric/Electric (TH*) & 
Gas/Electric (YH*)​​
Electric/Electric (THJ) & 
Gas/Electric (YHJ) 
Electric/Electric (TZC) & Gas/Electric​ (YZC)​ Electric/Electric (TZJ) & Gas/Electric​ (YZJ)​
Capacity (tons)​​ 3-5​​ 6-25​​ 3-5​​ 6-25 3-10 12.5-25
Unit Controller​​ ReliaTel or ​Electromechanical​​ Symbio ​​700 ReliaTel or ​
Symbio 700 ReliaTel​​ Symbio 700
Warranty ​​ 1 Year Parts​​
5 Year Compressor​​
3 Year Parts​​
5 Year Compressor​​
1 Year Parts​​
5 Year Compressor​​
3 Year Parts​​
5 Year Compressor​​
1 Year Parts​​
5 Year Compressor​​
3 Year Parts
5 Year Compressor
Humidity Control (HGRH) Option N/A 6-25​​ 3-5​​ 6-25 N/A 12.5-25
Stable Temperature Control (Modulating Gas Heat) Option N/A 10:1 Natural Gas, 6:1 LP N/A 10:1 Natural Gas, 6:1 LP 2.5:1 Natural Gas 10:1 Natural Gas, 6:1 LP
Coil Guards​​ Optional​​ Standard​​ Optional​​ Standard Optional ​​ Standard
Efficiency Ratings​ ​14 SEER ​ ​13-14.8 IEER​ ​15-17.5 SEER 15.1-18.1 IEER ​18.5-20.1 SEER (3-5)​
19.3-23.2 IEER (6-10)​
20-26.3 IEER
Refrigerant ​​ ​R-410A​ ​R-410A​ ​R-410A​ ​R-410A​ ​R-410A​ R-410A
Airflow ​Configuration​​ Convertible​​ Convertible​​ Convertible​​ Convertible​​ Convertible Convertible

Product Literature

Customer Story

Texas RoadHouse

One reason for Texas Roadhouse® restaurants’ fast-growing success is customer and kitchen staff comfort. Several years ago Texas Roadhouse restaurants began using LCSystem’s backshelf hood system. The change from canopy to backshelf hoods improved kitchen comfort levels and reduced exhaust airflow as much as 50 percent. However, like canopy hoods, backshelf hoods included conventional make-up air (MUA) that was heated in winter but not conditioned in summer.

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