Trane Technologies Precedent TZJ150A Installation, Operation And Maintenance Manual
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Trane Technologies Precedent TZJ150A Installation, Operation And Maintenance Manual

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Installation, Operation, and Maintenance
Packaged Rooftop Air Conditioners
Precedent™ Cooling and Electric
Heat
Ultra High Efficiency
12.5 to 25 Tons – 60 Hz
Model Numbers: TZJ150A - TZJ300A
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment
can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or
serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are attached to the equipment.
April 2023
SAFETY WARNING
RT-SVX076A-EN

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  • Page 1 Installation, Operation, and Maintenance Packaged Rooftop Air Conditioners Precedent™ Cooling and Electric Heat Ultra High Efficiency 12.5 to 25 Tons – 60 Hz Model Numbers: TZJ150A - TZJ300A SAFETY WARNING Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
  • Page 2 Introduction Read this manual thoroughly before operating or servicing WARNING this unit. Proper Field Wiring and Grounding Required! Warnings, Cautions, and Notices Failure to follow code could result in death or serious Safety advisories appear throughout this manual as injury. required.
  • Page 3 Introduction Copyright WARNING Follow EHS Policies! This document and the information in it are the property of Trane, and may not be used or reproduced in whole or in Failure to follow instructions below could result in part without written permission. Trane reserves the right to death or serious injury.
  • Page 4 Table of Contents Model Number Description ....6 High Temperature Sensor (FIAHTST001*) ..... . . 11 General Information .

  • Page 5: Table Of Contents

    Table of Contents Optional TBUE Wiring (Through-the-Base Final System Setup ..... . . 35 Electrical Option)..... . 26 Maintenance .
  • Page 6 Model Number Description Digit 1 — Unit Function Digit 12, 13 — Service Sequence Digit 18 — Through-the-Base Provisions T = DX Cooling ** = Factory Assigned 0 = No Through-the-Base Provisions A = Through-the-Base Electric Digit 2 — Cooling Efficiency Digit 14 —...
  • Page 7 Model Number Description Digit 25— System Monitoring Controls 0 = No Monitoring Control 1 = Clogged Filter Switch 2 = Condensate Overflow Switch 4 = Clogged Filter Switch and Condensate Overflow Switch Digit 26— Not Used Digit 27— Hardware Enhancements 0 = No Enhancements 1 = Stainless Steel Drain Pan Digit 28—...
  • Page 8 General Information Unit Inspection Note: Do not use the unit’s heater for temporary heat without first completing the start-up. To protect against loss due to damage incurred in transit, The manufacturer will not assume any responsibility for perform inspection immediately upon receipt of the unit. equipment damage resulting from condensate Check carefully for shipping damage.
  • Page 9 General Information Compressor Nameplate Clogged Filter Switch (Optional) The unit mounted clogged filter switch monitors the The nameplate for the compressors are located on the side pressure differential across the return air filters. It is of the compressor. mounted in the filter section and is connected to the Fresh Air Options Module.
  • Page 10 General Information Compressor/Inverter Protection Wall Mounted Relative Humidity Sensor (BAYSENS036*) Symbio™ 700 control receives input from the inverter drive for any errors encountered by the drive, refer to Packaged Field installed, wall mounted humidity sensor that Rooftop Air Conditioners Precedent™ eFlex™ measures temperature and relative humidity.
  • Page 11 General Information Smoke Detector Sensor High Temperature Sensor (FIAHTST001*) (Optional) This sensor connects to the Symbio™ 700 Emergency Stop Input and provides high limit “shutdown” of the unit. This sensor provides high limit “shutdown” of the unit and The sensor is used to detect high temperatures due to a requires a manual reset.
  • Page 12 General Information – The line to line voltage is not between 180 volts and 633 volts. RT-SVX076A-EN...
  • Page 13 Pre-Installation WARNING • Use a NIOSH approved dust/mist respirator. • Avoid contact with the skin or eyes. Wear long-sleeved, Fiberglass Wool! loose-fitting clothing, gloves, and eye protection. Exposure to glass wool fibers without all necessary • Wash clothes separately from other clothing: rinse PPE equipment could result in cancer, respiratory, washer thoroughly.
  • Page 14 Dimensions and Weights Dimensional Data Figure 2. 12.5 to 25 tons ultra high efficiency INDOOR TOP PANEL CONTROL BOX SECTION ACCESS PANEL OUTDOOR TOP PANEL COMPRESSOR SECTION ACCESS PANEL EVAPORATOR SECTION ACCESS PANEL 2" ELECTRICAL CONNECTION SINGLE POINT POWER HORIZONTAL ACCESS 66"...
  • Page 15 Dimensions and Weights Figure 4. 12.5 to 25 tons ultra high efficiency – horizontal airflow supply/return 5 1/4'' [133] RETURN 20'' 46 1/2'' [508] [1181] SUPPLY 26 3/4'' 22 3/8'' [679] [570] 18 7/16'' [468] 29'' [737] [153] 4 9/16'' [114] 7 15/16'' 25 1/2''...
  • Page 16 Dimensions and Weights Figure 6. 12.5 to 25 tons ultra high efficiency – unit clearance and roof opening CLEARANCE 36” 914 MM UNIT OUTLINE CLEARANCE 68” 1727 MM CLEARANCE FORM TOP OF UNIT 72” MM (1829 MM) ROOF 76 1/2” OPENING 1943 MM CLEARANCE 48”...
  • Page 17 Dimensions and Weights Figure 8. 12.5 to 25 ton ultra high efficiency – swing diameter for hinged door(s) option 30" 32" 754MM 809MM 36" 907MM RT-SVX076A-EN...
  • Page 18 Dimensions and Weights Clearances capacity, and peak operating efficiency. Providing less than the recommended clearances may result in condenser coil Figure 9, p. 18 illustrates the minimum operating and starvation, “short-circuiting” of exhaust and economizer service clearances for either a single or multiple unit airflows, or recirculation of hot condenser air.
  • Page 19 Dimensions and Weights Figure 10. Corner weights Center of Gravity Length Center of Gravity Width Center of Gravity Table 2. Factory installed options (FIOPS)/accessory net weights (lb) TZJ150-300 Accessory 12.5, 15, 17.5, 20, 25 Tons Barometric Relief Economizer Electric Heaters Low Leak Economizer - Downflow Low Leak Economizer - Horizontal Oversized Motor...
  • Page 20 Dimensions and Weights Lifting and Rigging Figure 11. Rigging and center of gravity — 12.5 to 25 tons WARNING Heavy Object! Failure to follow instructions below could result in unit dropping which could result in death or serious injury, and equipment or property-only damage. Ensure that all the lifting equipment used is properly rated for the weight of the unit being lifted.
  • Page 21 Installation Ductwork WARNING Heavy Object! Supply and return air openings as viewed from the rear of the unit are shown in the following drawings. Failure to follow instructions below could result in unit dropping which could result in death or serious Figure 12.
  • Page 22 Installation Table 3. Clearance required from duct to combustible installed by the installing contractor before the unit is set surfaces into place. Note: For sound consideration, cut only the holes in the Clearance required from duct to Model Number roof deck for the ductwork penetrations. Do not cut combustible surfaces (inches) out the entire roof deck within the curb perimeter.
  • Page 23 Installation 4. Install a lifting bar, as shown in the Dimensions and • Install and connect a condensate drain line to the Weights chapter, to protect the unit and to facilitate a evaporator drain connection. uniform lift. The minimum distance between the lifting Factory Installed Economizer hook and the top of the unit should be seven feet.
  • Page 24 Installation Air-Fi® Wireless Communication Figure 16. Horizontal bracket installation (top view of unit) Interface The factory installed wireless communications interface is installed in the downflow discharge position. If a unit is to be converted to horizontal discharge, the following conversion must be performed: 1.
  • Page 25 Installation Main Electrical Power color-coded, weather-proof, multi-wire cable according to the field wiring instructions. Requirements Note: Refer to thermostat or zone sensor wire installation WARNING guide for proper wire gauge. Hazardous Voltage w/Capacitors! Condensate Drain Configuration Failure to disconnect power and discharge capacitors before servicing could result in death or serious WARNING injury.

  • Page 26: Optional Tbue Wiring

    Installation NOTICE (RT-PRC109*-EN). Access to the filters is obtained by removing the filter access panel. Use Copper Conductors Only! Note: Do not operate the unit without filters. Failure to use copper conductors could result in equipment damage as the equipment was not Outdoor Motor Controllers designed or qualified to accept other types of conductors.

  • Page 27: Field-Installed Control Wiring

    Installation selected would be a factory mounted non-fused disconnect All field wiring must conform to NEC guidelines as well as switch (UDC) or circuit breaker (UCB). If neither a factory state and local codes. mounted non-fused disconnect switch (UDC) or circuit Control Power Transformer breaker (UCB) was factory mounted, field wiring connections should be terminated in the control box at...
  • Page 28 Installation Figure 22. Low voltage wiring Figure 23. Main control panel low voltage wiring Table 4. Recommended wire lengths Table 4. Recommended wire lengths (continued) Maximum recommended wire Maximum recommended wire Wire Size length from unit controller to Wire Size length from unit controller to sensor sensor...

  • Page 29: Controls Using Dc Analog Input/Outputs (Standard Low Voltage Multi Conductor Wire)

    Installation Controls using DC Analog Input/Outputs Table 5. Zone sensor module wiring (continued) (Standard Low Voltage Multi conductor Distance from Unit to Control Recommended Wire Size Wire) 18 gauge 241 -385 feet Before installing any connecting wiring between the unit 73.5 - 117.3 m 0.75 mm and components utilizing a DC analog input\output signal,...
  • Page 30 Installation Figure 24. Examples Note: Wiring pin numbers are for reference only. There are Table 6. Temperature vs. resistance (continued) multiple smoke detector systems that could have Temperature differently numbered pins. For correct wiring details, Nominal Resistance please refer to the specific smoke detector literature (kOhms) Degrees °F Degrees °C...
  • Page 31 Installation Table 6. Temperature vs. resistance (continued) Table 6. Temperature vs. resistance (continued) Temperature Temperature Nominal Resistance Nominal Resistance (kOhms) (kOhms) Degrees °F Degrees °C Degrees °F Degrees °C 50° 10.0 19.96 75° 23.9 10.50 55° 12.8 17.47 80° 26.7 9.297 60°...

  • Page 32: Pre-Start

    Pre-Start Use the checklist provided below in conjunction with the Excessive three phase voltage imbalance between phases “General Unit Requirements” checklist to ensure that the will cause motors to overheat and eventually fail. The unit is properly installed and ready for operation. maximum allowable voltage imbalance is 2 percent.

  • Page 33: Compressor Crankcase Heaters

    Pre-Start Compressor Crankcase Heaters WARNING Hazardous Voltage w/Capacitors! Each compressor can be equipped with a crankcase heater (On some units the crankcase heater comes standard). Failure to disconnect power and discharge capacitors The proper operation of the crankcase heater is important before servicing could result in death or serious to maintain an elevated compressor oil temperature during injury.
  • Page 34 Pre-Start appropriate outputs. A user-selected timeout value will configuration, see ACC-APG002*-EN, Symbio™ 700 for determine how long the controller will remain in any given Precedent Packaged Rooftop Air-Conditioners Application state once initiated. For detailed information on how each Guide. Service Test State is interpreted based on the equipment’s Figure 25.

  • Page 35: Unit Start-Up

    Unit Start-Up Sequence of Operation Hot Gas Reheat WARNING See ACC-APG002*-EN, Application Guide, Symbio™ 700 Controller with Precedent™ Packaged Rooftop Air- Live Electrical Components! Conditioners. Failure to follow all electrical safety precautions when exposed to live electrical components could result in Return Air Smoke Detector death or serious injury.
  • Page 36 Unit Start-Up WARNING Safety Alert! Failure to follow instructions below could result in death or serious injury. In addition to the following tasks, you MUST: • Follow all instructions in the unit’s Installation, Operation, and Maintenance manual, including warnings, cautions, and notices. •...

  • Page 37: Maintenance

    Maintenance Condensate Overflow Switch WARNING Hazardous Service Procedures! During maintenance, the switch float (black ring) must be checked to ensure free movement up and down. Failure to follow all precautions in this manual and on the tags, stickers, and labels could result in death or Cooling Season serious injury.

  • Page 38: Coil Cleaning

    Maintenance Microchannel (MCHE) Coils terminal connections, as well as damaged wire insulation. Make any necessary repairs. NOTICE • Verify that the electric heat system operates properly. Coil Damage! Coil Cleaning Failure to follow instructions below could result in coil damage. Regular coil maintenance, including annual cleaning, DO NOT use any detergents with microchannel enhances the unit’s operating efficiency by minimizing the...

  • Page 39: Annual Maintenance

    Maintenance Final Process 3. For compressor replacements and/or additional questions, contact Technical Support. For future reference, record the unit data below in the blanks provided. Annual Maintenance Clean and repaint any corroded surface. Table 7. Unit data log Complete Unit Model Number Unit Serial Number Wiring Diagram Numbers (from unit control panel)

  • Page 40: Troubleshooting

    Troubleshooting • Refer to the Symbio™ 700 Controller with Precedent™ • Refer to the Packaged Rooftop Air Conditioners Packaged Rooftop Air-Conditioners Application Guide Precedent™ eFlex™ Variable Speed Compressor (ACC-APG002*-EN). Inverter Troubleshooting Guide (RT-SVD008*-EN). RT-SVX076A-EN...

  • Page 41: Wiring Diagrams

    Wiring Diagrams Note: Wiring diagrams can be accessed using e-Library by number search field or by contacting technical entering the diagram number in the literature order support. Table 9. Wiring diagrams Schematic Type Voltage Drawing Number Description Controls SCHEMATIC; SHEET 1, POWER, DUAL COMPRESSOR, DUAL Symbio 700 Main Unit 12134334...
  • Page 42 Wiring Diagrams Table 9. Wiring diagrams (continued) Schematic Type Voltage Drawing Number Description Controls Symbio 700 Main Unit X39004322 LABEL; FUSE TABLE Main Unit Symbio 700 230V/460V 12134605 SCHEMATIC; SHEET 1, POWER, SINGLE COMPRESSOR, DUAL CONDENSER FAN, EFLEX, 230V/460V, STD SCCR Main Unit Symbio 700 575V...
  • Page 43 Wiring Diagrams Table 9. Wiring diagrams (continued) Schematic Type Voltage Drawing Number Description Controls Component Location Symbio 700 12134452 DIAGRAM; COMPONENT LOCATION, GAS, C CABINET Component Location Symbio 700 DIAGRAM; COMPONENT LOCATION, COOLING/ELECTRIC, D CABINET 12134453 Component Location Symbio 700 DIAGRAM;...

  • Page 44: Piping Diagrams

    Piping Diagrams Figure 26. Piping diagram – 12.5 to 15 tons ultra high efficiency (TZJ150–180) RT-SVX076A-EN...
  • Page 45 Piping Diagrams Figure 27. Piping diagram – 12.5 to 15 tons ultra high efficiency - hot gas reheat (TZJ150–180) RT-SVX076A-EN...
  • Page 46 Piping Diagrams Figure 28. Piping diagram – 17.5 to 25 tons ultra high efficiency (TZJ210–300) RT-SVX076A-EN...
  • Page 47 Piping Diagrams Figure 29. Piping diagram – 17.5 to 25 tons ultra high efficiency - hot gas reheat (TZJ210–300) RT-SVX076A-EN...

  • Page 48: Limited Warranty

    (2) have the capacities and ratings set forth in the company’s Trane Technologies catalogs and bulletins. 2701 Wilma Rudolph Blvd. There is no warranty against corrosion, erosion or Clarksville, TN 37040-1008 deterioration.
  • Page 49 Notes RT-SVX076A-EN...
  • Page 50 Notes RT-SVX076A-EN...
  • Page 51 Notes RT-SVX076A-EN...
  • Page 52 Trane - by Trane Technologies (NYSE: TT), a global innovator - creates comfortable, energy efficient indoor environments for commercial and residential applications. For more information, please visit trane. com or tranetechnologies.com. Trane has a policy of continuous product and product data improvements and reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

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