Trane YSJ072A Installation, Operation And Maintenance Manual
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Trane YSJ072A Installation, Operation And Maintenance Manual

Packaged rooftop air conditioners precedent cooling and gas/ electric
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Installation, Operation, and Maintenance
Packaged Rooftop Air
Conditioners
Precedent™ Cooling and Gas/
Electric
Standard Efficiency
6 to 25 Tons – 60 Hz
Model Numbers: YSJ072A - YSJ300A
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.
June 2022
SAFETY WARNING
RT-SVX071A-EN

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  • Page 1 Electric Standard Efficiency 6 to 25 Tons – 60 Hz Model Numbers: YSJ072A - YSJ300A 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. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury.
  • Page 2 (HCFCs). Not all refrigerants containing these compounds bump cap, fall protection, electrical PPE and arc have the same potential impact to the environment. Trane flash clothing). ALWAYS refer to appropriate advocates the responsible handling of all refrigerants-...
  • Page 3 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 Smoke Detector Sensor (Optional) ..11 Phase Monitor .

  • Page 5: Table Of Contents

    Table of Contents Maintenance ....... 52 Controls using DC Analog Input/Outputs (Standard Low Voltage Multi conductor Monthly Maintenance .
  • Page 6 Model Number Description Digit 1 — Unit Function Digit 11 — Heating Capacity Digit 15 — Supply Fan/Drive Type/Motor Y = DX Cooling, Gas Heat L = Low Gas Heat 0 = Standard Motor M = Medium Gas Heat 1 = Optional Oversized/High Static Motor H = High Gas Heat 2 = Single Zone Variable Air Volume with Standard Digit 2 —...
  • Page 7 Model Number Description Digit 21— Communications Options Digit 27— Unit Hardware Enhancements 0 = No Communications Interface 0 = No Enhancements 1 = Advanced Controller with BACnet® 1 = Stainless Steel Drain Pan Communications Interface Digit 28— Short Circuit Current Rating 2 = Advanced Controller with LonTalk®...
  • 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 when the pressure differential across the filters decreases to approximately 0.4 inch w.c. The clogged filter output is The nameplate for the compressors are located on the side energized when the supply fan is operating and the of the compressor.
  • Page 10 This sensor features single setpoint capability and timed required to restart the compressor. override with override cancellation. It is used with a Trane Integrated Comfort™ building management system. High Pressure Control Remote Zone Sensor (BAYSENS016*) The high pressure controls are wired in series between the compressor outputs on the Symbio™...
  • Page 11 General Information Touch Screen Programmable Zone Notes: Sensor (BAYSENS800) • The supply air smoke detector samples supply air. The return smoke detectors sample return This sensor uses a BACnet® MS/TP link to communicate air. The smoke detectors are designed to shut zone temperature and setpoints.
  • Page 12 Pre-Installation Precautionary Measures WARNING Fiberglass Wool! • Avoid breathing fiberglass dust. Exposure to glass wool fibers without all necessary • Use a NIOSH approved dust/mist respirator. PPE equipment could result in cancer, respiratory, • Avoid contact with the skin or eyes. Wear long-sleeved, skin or eye irritation, which could result in death or loose-fitting clothing, gloves, and eye protection.
  • Page 13 Dimensions and Weights Dimensional Data Figure 2. 6 to 10 tons standard efficiency TOP PANEL CONTROL PANEL ACCESS CONDENSER FAN EVAPORATOR SECTION ACCESS PANEL 50-7/8" [1293] ALTERNATE CONDENSATE CONNECTION 3/4 - 14 NPT DIA. HOLE 27-5/8" [700] 47-7/8" [1217] UNIT CONTROL WIRE 88-1/8"...
  • Page 14 Dimensions and Weights Figure 4. 6 to 10 tons standard efficiency – horizontal airflow supply/return 3-7/4" [97] 9-3/8" [237] 16-3/4" 32-1/4" [426] [820] 19-1/4" [490] 32-1/4" [820] 27-5/8" [700] 3/4 -14 NPT DIA. HOLE CONDENSATE DRAIN 4-1/4" [109] Figure 5. 6 to 10 tons standard efficiency — unit clearance and roof opening CLEARANCE HORIZONTAL FLOW - 18”...
  • Page 15 Dimensions and Weights Figure 6. 6 to 10 tons standard efficiency – roof curb 46 3/8” 18 1/4” 1178 MM 1” 470 MM 34 3/8” 25 MM 6 5/8” 873 MM 168 MM 80 1/2” 18 1/2” 14” 2045 MM 470 MM 355 MM 1”...
  • Page 16 Dimensions and Weights Figure 8. 6 to 10 tons standard efficiency – swing diameter for hinged door(s) option 17” 432 MM 21 3/8” 543 MM Applicable to Y_C models only 34 5/8” 879 MM Figure 9. 6 to 25 tons standard efficiency— gas pipe height Note: Height of gas pipe required from inside unit base to gas shut off assembly (factory provided).
  • Page 17 Dimensions and Weights Figure 10. 12.5 tons standard efficiency INDOOR TOP PANEL CONTROL BOX SECTION ACCESS PANEL OUTDOOR TOP PANEL EVAPORATOR SECTION 50-7/8" ACCESS PANEL [1293] ALTERNATE CONDENSATE DRAIN CONNECTION 3/4 - 14 NPT DIA HOLE 27-5/8" CONDENSER COIL [700] 47-7/8"...
  • Page 18 Dimensions and Weights Figure 12. 12.5 tons standard efficiency – horizontal airflow, supply and return 3 7/8” 98 MM 9 3/8” 238 MM RETURN 32 1/4” 832 MM 16 3/4” 425 MM SUPPLY 19 1/4” 489 MM 32 1/4” 4 3/4” 832 MM 120 MM 27 5/8”...
  • Page 19 Dimensions and Weights Figure 14. 12.5 tons standard efficiency – roof curb 18 1/2” 6 5/8” 470 MM 168 MM 56 3/8” 1” 34 3/8” 1432 MM 25 MM 873 MM 83 7/8” 80 1/2” 18 1/2” 2045 MM 2130 MM 470 MM 1”...
  • Page 20 Dimensions and Weights Figure 16. 6 to 12.5 tons standard efficiency – economizer, manual or motorized fresh air damper ECONOMIZER HOOD BAROMETRIC RELIEF HOOD 7-3/4" [198] 7-1/4" 16-3/4" [185] [424] 12" [303] DIMENSIONS EXTENDS TO 21-5/8" (549MM) WHEN POWERED EXHAUST IS COUPLED WITH LOW LEAK ECONOMIZER RT-SVX071A-EN...
  • Page 21 Dimensions and Weights Figure 17. 6 to 12.5 tons standard efficiency – power exhaust ECONOMIZER HOOD 5-5/8" [144] 20-1/2" [520] RT-SVX071A-EN...
  • Page 22 Dimensions and Weights Figure 18. 15 to 25 tons standard efficiency – power exhaust 22.7 21.4 Figure 19. 15 to 25 tons standard efficiency GAS CONNECTION 3/4 NPT (280, 320, 400 MBh) INDOOR TOP PANEL CONTROL BOX SECTION ACCESS PANEL 2"...
  • Page 23 Dimensions and Weights Figure 20. 15 to 25 tons standard efficiency – downflow airflow supply/return, through-the-base utilities 7" 14 3/8" 40" 19 3/8" 177 MM 365 MM 1002MM 488MM 6 5/8'' 167 MM 14 7/16" 365MM 73 5/8" 65" 1868MM 1652MM 8 3/8"...
  • Page 24 Dimensions and Weights Figure 22. 15 to 25 tons standard 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 25 Dimensions and Weights Figure 24. 15 to 25 ton standard efficiency – swing diameter for hinged door(s) option 30" 32" 754MM APPLICABLE TO 809MM 36" Y_J MODELS ONLY 907MM RT-SVX071A-EN...
  • Page 26 Dimensions and Weights Clearances capacity, and peak operating efficiency. Providing less than the recommended clearances may result in condenser coil Figure 25, p. 26 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 27 Dimensions and Weights Weights Table 1. Maximum unit, corner weights (lbs) and center of gravity dimensions (in.) Maximum Model Weights Corner Weights Center of Gravity (in.) Tons Unit Model No. Length Shipping Width YSJ072 1107 1009 YSJ090 1111 1013 YSJ102 1127 1029 YSJ120...
  • Page 28 Dimensions and Weights Table 2. Factory installed options (FIOPS)/accessory net weights (lb) (continued) YSJ072-120 YSJ150 YSJ180-300 Accessory 6, 7.5, 8.5, 10 Tons 15, 17.5, 20, 25 Tons 12.5 Tons Unit Mounted Disconnect Notes: Weights for options not listed are <5 lbs. Net weight should be added to unit weight when ordering factory-installed accessories.
  • Page 29 Installation Horizontal Units Figure 30. 12.5 tons standard efficiency – horizontal airflow, supply and return If the unit is installed at ground level, elevate it above the snow line. Provide concrete footings at each support 3 7/8” location with a “full perimeter” support structure or a slab 98 MM foundation for support.
  • Page 30 Installation Roof Curb Figure 32. 6 to 10 tons standard efficiency – downflow airflow supply/return, through-the-base Downflow utilities 3 5/8” 92 MM The roof curbs for these units consists of a “full perimeter” 17 1/2” 9 7/8” 17 1/2” 444 MM 251 MM 444 MM 4”...
  • Page 31 Installation Figure 35. View for base to roof curb alignment on 1. Confirm unit does not need additional moves by fork lift. C.0 cabinet on a 50" x 84" roof curb 2. Prepare unit for rigging as follows: • 6 to 12.5 ton units: Remove all drill screws fastening wood protection to metal base rail.
  • Page 32 Installation Figure 38. Fork pockets — 12.5 ton standard • Check the unit for shipping damage and material efficiency units shortage; file a freight claim and notify appropriate sales representative. • Verify correct model, options and voltage from unit nameplate. •...
  • Page 33 TCO1 limit switch (15 to 25T) and discard. For detailed instructions, refer to “TCO1 Instructions,” p. Table 3. TC01 tripping values Unit Model TCO1 Tripping Values - Tons Number Downflow/Horizontal YSJ072A**(0,A)L 105F YSJ072A**(0,A)M 120F YSJ072A**(0,A)H 140F YSJ090A**(0,A)L 120F/110F YSJ090A**(0,A)M 130F/135F...
  • Page 34 Installation Table 3. TC01 tripping values (continued) Figure 44. Return duct cover YSJ072A**(0,A)L 105F YSJ210A**(0,A)L 140F-3"/ 205-7" 17.5 RTV Sealant J210A** 140F-3"/195F-3" (0,A)M J210A** 150F-3"/200F-3" (0,A)H YSJ240A**(0,A)L 140F-3"/205-7" 5. Slide RETURN DUCT COVER (insulation side up) into YSJ240A**(0,A)M 135F-3"/185F-3" supply opening until inward edge of duct cover YSJ240A**(0,A)H 150F-3"/200F-3"...
  • Page 35 Installation installed at the factory for down flow operation with the operation. TCO1 shipped which is either attached to the 4. Replace heat section access panel. combustion blower motor (6 to 12.5 tons) or to the installed TCO1 limit switch (15 to 25 tons) for horizontal Figure 46.
  • Page 36 Installation Air-Fi® Wireless Communication Figure 48. 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 37 For Trane or others, refer to the appropriate through the base access, remove the factory-provided manufacturer’s literature for allowable waiting periods cap from the base pan opening.
  • Page 38 Installation Figure 53. Through-the-base gas pipe assembly for YSJ(180-300)A Grommet 3/4" x 8 1/2" Pipe Nipple Grommet 90 Elbow 3/4" x 6 1/2" Pipe Nipple SEE DETAIL A 90 Street Elbow Support Plate Gas Shut-off Valve 3/4" x 2 1/2" Pipe Nipple 3/4"...
  • Page 39 Installation • Gas supply line properly sized and connected to the pan support in the grommeted hole as the panel is put unit gas train. in place. • All gas piping joints properly sealed. 6. Replace evaporator access panel and supply air access panels.
  • Page 40 Installation Figure 55. Condensate trap installation wiring is properly sized and installed, follow the following guidelines. Verify that the power supply available is compatible with the unit’s nameplate ratings. The available supply power must be within 10% of the rated voltage stamped on the nameplate.
  • Page 41 Installation Optional TBUE Wiring (Through-the- An overall layout of the various control options available with the required number of conductors for each control Base Electrical Option) device is illustrated in the wiring diagram located on main Location of the applicable electrical service is illustrated control box door.
  • Page 42 Installation Figure 56. Low voltage wiring — B cabinet Figure 57. Low voltage wiring — C cabinet RT-SVX071A-EN...
  • Page 43 Installation Figure 58. Low voltage wiring — D cabinet Figure 59. Main control panel low voltage wiring —B/C/D cabinet Table 7. Recommended wire lengths Table 7. 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...

  • Page 44: Controls Using Dc Analog Input/Outputs

    Installation Controls using DC Analog Input/Outputs Table 8. 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 45 Installation Figure 60. Examples Note: Wiring pin numbers are for reference only. There are multiple smoke detector systems that could have differently numbered pins. For correct wiring details, please refer to the specific smoke detector literature that accompanied this unit. RT-SVX071A-EN...
  • Page 46 Installation Table 9. Temperature vs. resistance Table 10. Sizing natural gas pipe mains and branches Temperature Iron Pipe Size (IPS) Inches Nominal Resistance (kOhms) Degrees °F Degrees °C Length ½" Pipe ¾" Pipe 1" Pipe 1¼" 1½" of Pipe Pipe Pipe -28.9 170.1...

  • Page 47: 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 48: 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 49 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 62.

  • Page 50: Unit Start-Up

    Unit Start-Up Sequence of Operation Table 12. Ignition module diagnostics (continued) See ACC-APG002*-EN, Application Guide, Symbio™ 700 High Limit switch protection device open (excessive heat in combustion Controller with Precedent™ Packaged Rooftop Air- 4 Flashes chamber, low airflow). Auto reset. Conditioners.

  • Page 51: Hot Gas Reheat

    Unit Start-Up 2. After the compressor and condenser fan have started Follow the Test Guide in Figure 62, p. 49 to start the unit in and operated for approximately 30 minutes, observe the heating mode. Momentarily jump across the Test 1 and the operating pressures.

  • Page 52: 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 53: 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 54 Maintenance 3. For compressor replacements and/or additional questions, contact Technical Support. RT-SVX071A-EN...

  • Page 55: Annual Maintenance

    Maintenance Annual Maintenance Final Process Clean and repaint any corroded surface. For future reference, record the unit data below in the blanks provided. Table 13. Unit data log Complete Unit Model Number Unit Serial Number Wiring Diagram Numbers (from unit control panel) Connections Schematics Table 14.

  • Page 56: Troubleshooting

    Troubleshooting See ACC-APG002*-EN, Application Guide, Symbio™ 700 Controller with Precedent™ Packaged Rooftop Air- Conditioners. RT-SVX071A-EN...

  • Page 57: 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 15. Wiring diagrams Drawing Schematic Type Voltage Description Controls Number SCHEMATIC; SHEET 1, POWER, DUAL COMPRESSOR, DUAL Symbio 700 Main Unit 12134334...
  • Page 58 Wiring Diagrams Table 15. Wiring diagrams (continued) Drawing Schematic Type Voltage Description Controls Number Symbio 700 LABEL; FUSE TABLE Main Unit X39004322 Component Location Symbio 700 12134449 DIAGRAM; COMPONENT LOCATION, COOLING/ELECTRIC, B CABINET Component Location Symbio 700 DIAGRAM; COMPONENT LOCATION, GAS, B CABINET 12134450 Component Location Symbio 700...

  • Page 59: Piping Diagrams

    Piping Diagrams RT-SVX071A-EN...
  • Page 60 Piping Diagrams RT-SVX071A-EN...
  • Page 61 Piping Diagrams RT-SVX071A-EN...
  • Page 62 Piping Diagrams RT-SVX071A-EN...

  • Page 63: Limited Warranty

    This warranty is extended by Trane to the original be defective. purchaser and to any succeeding owner of the real...
  • Page 64 For more information, please visit trane.com or americanstandardair.com. Trane and American Standard have a policy of continuous product and product data improvement and reserve the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

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Ysj300a

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