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Johnson Controls NexusPremier 25 Ton Technical Manual

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5513350-JTG-1018
TECHNICAL GUIDE
NexusPremier
Rooftop Units
™
25–50 Tons
LD26877
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE

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Summary of Contents for Johnson Controls NexusPremier 25 Ton

  • Page 1 5513350-JTG-1018 TECHNICAL GUIDE NexusPremier Rooftop Units ™ 25–50 Tons LD26877 FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE...

  • Page 2: Table Of Contents

    • Various airflow path configurations for discharge and return/exhaust air • Optional humidifier, sound attenuator, or air blender • Low ambient temperature option • Variable frequency drive (VFD) options on all LD27639 fans (Figure 1) Figure 1: VFD Displays Johnson Controls...
  • Page 3 • Building pressurization controls • Ultraviolet (UV) lights option (Figure 2) • Stainless steel drain pan • Condensate overflow switch option • Airflow measurement options for outside air, sup- ply fan, and return fan LD27640 Figure 2: UV Lights Johnson Controls...

  • Page 4: Component Location

    3. Direct drive plenum (DDP) supply fan 7. Scroll compressors 11. Filter section 4. Modulating or staged gas heat 8. Condenser coil cleaning hatch 12. Collapsible rain hoods 13. Exhaust/return fan Figure 3: 25–50 Ton Packaged Rooftop Unit Cabinet Assembly Johnson Controls...

  • Page 5: Features And Benefits

    (BIM) files of superheat. Additionally, low ambient operation is an the specific unit selected. This aids in modeling placement available option with a variable speed condenser fan. and integration of the rooftop unit into the overall building design. Johnson Controls...
  • Page 6 The control platform minimizes commissioning time when connected to the Verasys Building Automa- ™ tion Systems (BAS), with self-discovery of the rooftop unit and its points by the BAS. Johnson Controls...
  • Page 7 Final Filters for damage to the conditioned space. Ultraviolet (UV) light banks are also an available option that minimize Blank Section mold and bacteria growth and assists in keeping the evaporator coil clean. LD26881 Figure 7: Final Filter Section Johnson Controls...
  • Page 8 LD26882 zontally in either direction. Depending on selected Figure 8: Energy Recovery Wheel (ERW) options, an end return is also possible. This airflow flexibility minimizes installation costs and maximizes possible locations for this flexible rooftop unit. Johnson Controls...

  • Page 9: Nomenclature

    Digit 8: Motor Control Options E: Top Return, Right OA, Side Exhaust F: Top Return, Right OA, Front Exhaust GV: Johnson Controls 1: Supply Fan Variable Frequency Drive (VFD) G: Top Return, Left OA, Side Exhaust 2: Supply Fan VFD with Line Reactor...
  • Page 10 V: Dual Enthalpy Economizer, Ultra Low Leak G: Return Fan with 2-inch Spring Isolation and L: Copper Fin Evaporator with SST Drain Pan Dampers with Air Measurement Station Seismic Restraint M: Copper Fin Evaporator with SST Drain Pan with Condensate Overflow Switch Johnson Controls...
  • Page 11 Supply and Return Smoke Detectors 1: Single Piece Construction Digit 33: Controls Options Digit 40: Curb Options A: None A: No Roof Curb B: Low Ambient C: Pedestal Curb D: Subcool and Superheat Measurement E: Low Ambient with Subcool and Superheat Measurement Johnson Controls...

  • Page 12: Selection Procedure Examples

    5. Leaving air temperature = 61.1°F / 57.7°F The 30 ton unit will meet the cooling requirements. From the nomenclature, digit 3 will be B for 30 ton capacity. Digit 4 will be 1 for standard capacity, stan- dard efficiency as assumed. Johnson Controls...
  • Page 13 Enter Table 27 at 12,000 CFM and 5.50 iwg TSP: The low heat option on Table 22 exceeds this re- quirement. RPM = 1768 c. This option is available on the 30 ton unit. BHP = 14.91 Johnson Controls...
  • Page 14 Return Smoke Detectors 16. Supply Fan Motor, 20 HP 17. Supply Fan Motor Type, ODP Premium Efficiency 1,800 RPM 35. Ultraviolet (UV) Lights and Carbon Dioxide (CO ) Sensors 19. Exhaust fan with VFD and Backdraft Damper 49. First Generation Johnson Controls...

  • Page 15: Physical Data

    Size (inches) 18–18 18–18 25–25 25–25 Motor Size Range (min to max HP) 3–15 3–15 5–20 5–20 Airflow Range (min to max CFM) 5,000–12,000 5,000–12,000 8,000–20,000 8,000–20,000 Static Pressure Range (min to max iwg) 0.5–3.0 0.5–3.0 0.5–3.0 0.5–3.0 Johnson Controls...
  • Page 16 1/23 Size (thickness in inches) Type Microchannel Microchannel Microchannel Microchannel Condenser Coil - Standard Capacity, High Efficiency Size (sq. ft.) Number of Rows/Fins Per Inch 1/23 1/23 1/23 1/23 Size (thickness in inches) Type Microchannel Microchannel Microchannel Microchannel Johnson Controls...
  • Page 17 42.5 x 70 / 1 42.5 x 70 / 1 Size (H x L in inches) / Rows High 25 x 70 / 2 25 x 70 / 2 42.5 x 70 / 2 42.5 x 70 / 2 Johnson Controls...
  • Page 18 Size (L x W in inches) - HEPA Filter 24 x 24 12 x 24 / 12 x 17 Total Filter Face Area (sq. ft.) - HEPA 23.5 34.26 Filter *NOTE: The quantities/sizes are the same for both the pre and post filters where noted. Johnson Controls...

  • Page 19: Capacity Performance

    Cooling Only/Electric Heat 10.8 15.0 Standard Capacity/Standard Efficiency Gas/Steam/Hot Water 10.6 14.9 Cooling Only/Electric Heat 10.9 15.9 50 Tons Standard Capacity/High Efficiency Gas/Steam/Hot Water 10.7 15.8 Cooling Only/Electric Heat 10.5 14.8 High Capacity/Standard Efficiency Gas/Steam/Hot Water 10.3 14.7 Johnson Controls...
  • Page 20 The first step is to convert this static pressure to equiv- alent sea level conditions. ESP loss = 1.5 iwg Sea level static pressure = 1.4 iwg / 0.832 = 1.68 iwg Total internal static loss = 0.93 iwg Total system static = 2.43 iwg Johnson Controls...
  • Page 21 Region 1266 RPM 1.5-inch external static 1101 RPM 936 RPM 0.93-inch internal static 0.0 1.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 Flow Rate (CFM x 1,000) LD26887 Figure 9: 25-Ton Unit Fan Performance Johnson Controls...
  • Page 22 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 23 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 24 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 25 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 26 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 27 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 28 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 29 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 30 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 31 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 32 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 33 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 34 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 35 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 36 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 37 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 38 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 39 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 40 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 41 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 42 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 43 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 44 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 45 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 46 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 47 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 48 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 49 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 50 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 51 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 52 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 53 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 54 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 55 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 56 Rated performance is at sea level. Cooling capacities are gross cooling capacities. CFM = airflow EWB = entering wet bulb air EDB = entering dry bulb air TMBH = total cooling capacity (MBH) SMBH = sensible cooling capacity (MBH) kW = total input Johnson Controls...
  • Page 57 For proper operation, the building supplied natural gas pressure should be 7–14 iwg (liquid propane pressure should be 12–14 iwg). Temperature rise can be calculated where temperature rise = (gas input capacity (Btu) x 0.81) / (CFM x 1.085). Maximum leaving air temperature cannot exceed 120.0°F Johnson Controls...
  • Page 58 278.3 328.0 10,000 195.6 249.1 303.0 357.0 12,000 208.6 265.8 323.2 380.9 5,000 136.9 174.1 211.6 249.2 6,000 165.7 210.8 256.1 301.7 11.1 8,000 187.1 238.2 289.4 340.9 10,000 204.5 260.2 316.2 372.5 12,000 218.8 278.5 338.4 398.7 Johnson Controls...
  • Page 59 202.5 249.4 295.1 12,000 172.9 224.3 277.1 327.9 16,000 183.4 238.1 294.9 348.9 20,000 190.9 248.1 307.6 364.1 8,000 204.0 260.6 317.6 374.9 12,000 235.1 300.5 366.3 432.5 16,000 256.4 328.0 399.9 472.3 20,000 272.6 348.8 425.4 502.5 Johnson Controls...
  • Page 60 Table 22: Steam Coil Performance Data - 25–30 Ton (Low Heat Option) Capacity (MBH) at Steam Pressure (PSI) 5,000 205.6 220.7 233.7 247.7 6,000 244.3 262.3 277.7 294.4 8,000 273.2 293.3 310.5 329.2 10,000 296.1 318.0 336.0 356.9 12,000 315.4 338.6 358.5 380.1 Johnson Controls...
  • Page 61 Table 25: Steam Coil Performance Data - 40–50 Ton (High Heat Option) Capacity (MBH) at Steam Pressure (PSI) 8,000 563.6 605.2 640.7 679.2 12,000 665.1 714.1 756.0 801.5 16,000 735.5 789.7 836.1 886.3 20,000 788.4 846.5 896.3 950.1 Johnson Controls...

  • Page 62: Airflow Performance

    All Discharges in Blank Section 0.01 0.01 0.02 0.03 0.05 Bottom 0.02 0.03 0.05 0.06 0.08 0.10 0.13 Side 0.02 0.03 0.05 0.06 0.08 0.10 0.13 All Discharges in Blank Section 0.01 0.02 0.03 0.04 0.05 0.06 0.08 Johnson Controls...
  • Page 63 250 MBH 0.01 0.01 0.01 0.02 0.04 500 MBH 0.01 0.05 0.06 0.08 0.10 0.12 0.15 0.19 0.23 750 MBH 0.02 0.02 0.03 0.05 0.07 0.10 0.14 0.19 0.25 1250 MBH 0.03 0.04 0.06 0.08 0.11 0.15 0.20 0.26 Johnson Controls...
  • Page 64 1765 14.54 1820 15.71 1874 16.99 1928 18.37 11,000 1658 12.31 1707 13.43 1756 14.63 1806 15.92 1855 17.21 1905 18.45 1955 19.69 12,000 1723 13.70 1768 14.91 1813 16.10 1858 17.32 1903 18.62 1949 20.00 1994 21.42 Johnson Controls...
  • Page 65 8.32 9,000 4.90 5.88 6.90 7.74 1073 8.94 1145 10.11 10,000 6.48 7.53 8.72 1036 9.73 1106 10.69 1179 12.01 11,000 8.38 9.52 1009 10.75 1085 12.07 1150 13.11 1213 14.16 12,000 10.62 11.89 1060 13.17 1131 14.60 Johnson Controls...
  • Page 66 16.55 18,000 1285 8.06 1340 9.96 1391 11.80 1440 13.70 1488 15.76 1537 18.01 19,000 1351 9.25 1403 11.26 1452 13.21 1499 15.18 1544 17.26 1590 19.53 20,000 1416 10.56 1466 12.69 1514 14.75 1559 16.80 1602 18.92 Johnson Controls...

  • Page 67: Electrical Data

    75.0 54.0 28.2 240.0 14.7 128.0 11.3 93.7 34.0 240.0 16.0 140.0 12.9 107.6 29.5 195.0 14.7 95.0 12.2 80.0 55.8 340.0 26.3 179.0 23.7 132.0 34.0 240.0 16.0 140.0 12.9 107.6 48.1 245.0 18.6 125.0 14.7 100.0 Johnson Controls...
  • Page 68 44.0 1, 2 41.0 304.0 19.2 147.0 16.7 122.0 39.1 267.0 18.6 142.0 15.4 103.0 39.1 267.0 18.6 142.0 15.4 103.0 NOTES: 1. Variable speed drive compressor 2. Input A supplied for maximum input current to compressor VFD Johnson Controls...
  • Page 69 High Heat 20.0 184.4 147.5 High Heat with SCR NOTES: * Silicon Controlled Rectifier (SCR) is a modulating electric heat option. SCR electric heat is installed on the first stage of the unit and provides modulation from 0–100%. Johnson Controls...
  • Page 70 20.4 12.5 10.0 17.8 14.2 23.5 19.1 Table 40: Supply Fan and Return/Exhaust Fan Motor Data - Premium Efficiency - TEFC Nominal Voltage Motor HP 208-230/3/60 460/3/60 575/3/60 13.9 25.4 18.1 14.6 19.2 13.9 25.4 18.1 14.6 19.2 Johnson Controls...
  • Page 71 AMPS AMPS Control Transformer 0.2 kVA Convenience Outlet Gas Heat (Per Module) 1.84 250 MBH 1.84 500 MBH 1.84 750 MBH 3.68 1250 MBH 5.52 Crankcase Heater 90W Ultraviolet (UV) Lights Unit Lights (per light) 0.05 0.025 0.02 Johnson Controls...

  • Page 72: Controls

    5 minutes or the early start period expires. The temperature (RAT). See also DAT Setpoint Reset on page control goes into occupied mode thereafter. Cool down op- erates opposite of warm-up, using cooling instead of heat- ing stages. Johnson Controls...
  • Page 73 This staggers start- vent the heat section high temperature limit switches from up for multiple rooftop units if all are commanded from the opening. same occupied command. After the timer has expires, the rooftop unit can start. Johnson Controls...
  • Page 74 If the occupancy mode is unoccupied, the unit does not speed setpoint resets between minimum cooling operate in SZVAV mode but instead operates in to the fol- speed and 100% to maintain the zone temperature lowing manner: setpoint. Johnson Controls...
  • Page 75 EA damper. If the return airflow differential (adjustable). building pressure is less than the building pressure setpoint, the EA damper output decreases to close the EA damper. Johnson Controls...
  • Page 76 Overall cooling demand, oil management, saturated DAT, and saturated suction tem- LD26894 perature all influence the allowable operational speed of Figure 10: Saturated Liquid Line Temperature Control Johnson Controls...
  • Page 77 Modulating Electric Heat If the DAT is lower than the heating setpoint, the heating demand increases. If the DAT is greater than the heating setpoint, the heating demand decreases. Johnson Controls...
  • Page 78 RA humidity sensors is unreliable, then the single enthalpy Table 43: Free Cooling Sensor Requirements changeover method is used. If the OA humidity sensor is unreliable, then the dry bulb changeover method is used. Dry Bulb Single Enthalpy Dual Enthalpy Johnson Controls...
  • Page 79 ERW. When the fresh air intake value falls below the fresh air in- take setpoint, the OA damper position increases above its minimum position until the fresh air intake value equals the fresh air intake setpoint. Johnson Controls...
  • Page 80 Otherwise, the indoor CO sequence is followed. that the smoke control sequences are not normal operation for rooftop units and are only utilized when smoke or other airborne contaminants must be quickly removed from the conditioned space. Johnson Controls...
  • Page 81 This ensures that water condenses and is removed • Sets exhaust fan output to OFF. from the air. The HGRH valve is then modulated so that it • Sets return fan output to OFF. warms the air to a DAT setpoint. Johnson Controls...
  • Page 82 Once the rooftop unit fan speed ning. The application is compatible with BACnet. The twin- matches the existing rooftop units, it releases into control. ning process allows for redundancy with the cooling/heat- Johnson Controls...
  • Page 83 Unit protection and safeties remain active and logged during commissioning mode. • The same static pressure probe can be connected to all discharge pressure transducers • The same static pressure probe can be connected to all building pressure transducers Johnson Controls...

  • Page 84: Weights And Dimensions

    Draw-Thru Filter Cabinet - Angle, Rigid, Bag Evaporator Cabinet Supply Fan Cabinet Heat Section Cabinet (Requires Discharge Plenum) Heat with Discharge Through Heat Section Small Post-Evaporator Blank Cabinet Large Post-Evaporator Blank Cabinet 1135 1135 1177 1177 Discharge Plenum Cabinet Johnson Controls...
  • Page 85 15 HP Motor 208-230/460/575V ODP 20 HP Motor 208-230/460/575V ODP 3 HP Motor 208-230/460/575V TEFC 5 HP Motor 208-230/460/575V TEFC 7.5 HP Motor 208-230/460/575V TEFC 10 HP Motor 208-230/460/575V TEFC 15 HP Motor 208-230/460/575V TEFC 20 HP Motor 208-230/460/575V TEFC Johnson Controls...
  • Page 86 High Capacity Cooling System 1814 2087 2837 3104 High Efficiency Cooling System 1850 2044 2623 2945 Hot Gas Reheat (HGRH) Coil Louver Hail Guard Miscellaneous Options Humidifier Air Blender Ultraviolet (UV) Lights Sound Attenuator Lights Smoke Detector Transformer Johnson Controls...
  • Page 87 10. The exhaust/return fan motor includes the weights of the motor, VFD, line reactor, and VFD bypass. 11. All sizes of electric heat. 12. A transformer is required if convenience outlet, gas heat, lights, or high end display are selected. 13. Roof curb weight is not included with this table. Johnson Controls...
  • Page 88 Weights and Dimensions (Continued) Dimensions Discharge through heat (bottom, left) LD27642 Post evaporator blank section (small post evaporator blank shown) Energy recovery wheel (ERW) Discharge plenum (bottom, left, right, top) Heat section LD27643 Figure 12: Rooftop Unit Component Locations Johnson Controls...
  • Page 89 Bottom Return, Right OA, Front Exhaust 86.63 51.36 31.94 59.95 19.26 21.00 7.00 17.17 Bottom Return, Left OA, Side Exhaust 86.63 51.36 31.94 4.18 19.26 21.00 7.00 17.17 Bottom Return, Left OA, Front Exhaust 86.63 51.36 31.94 4.18 19.26 21.00 7.00 17.17 Johnson Controls...
  • Page 90 Front Return, Left OA, Right Exhaust 10.51 40.00 40.00 8.19 22.45 16.55 7.00 17.17 Front Return, Right OA, Left Exhaust 45.74 40.00 40.00 8.19 22.45 16.55 7.00 17.17 Front Return, No OA, No EA 10.51 40.00 40.00 8.19 Johnson Controls...
  • Page 91 2. The heat section includes either gas, hot water, steam, or electric. 3. SU = Standard Unit DP = Discharge Plenum B = Bottom Discharge L = Left Discharge R = Right Discharge T = Top Discharge 4. Dimensions are ± 1 inch. Johnson Controls...
  • Page 92 2. The heat section includes either gas, hot water, steam, or electric. 3. SU = Standard Unit DP = Discharge Plenum B = Bottom Discharge L = Left Discharge R = Right Discharge T = Top Discharge 4. Dimensions are ± 1 inch. Johnson Controls...
  • Page 93 2. The heat section includes either gas, hot water, steam, or electric. 3. SU = Standard Unit DP = Discharge Plenum B = Bottom Discharge L = Left Discharge R = Right Discharge T = Top Discharge 4. Dimensions are ± 1 inch. Johnson Controls...
  • Page 94 Bottom Return, Right OA, Front Exhaust 93.57 52.86 45.00 46.90 31.13 23.40 4.10 17.27 Bottom Return, Left OA, Side Exhaust 93.57 52.86 45.00 4.18 31.13 23.40 4.10 17.27 Bottom Return, Left OA, Front Exhaust 93.57 52.86 45.00 4.18 31.13 23.40 4.10 17.27 Johnson Controls...
  • Page 95 Front Return, Left OA, Right Exhaust 7.63 50.00 55.00 8.19 29.16 20.18 4.10 17.27 Front Return, Right OA, Left Exhaust 38.62 50.00 55.00 8.19 29.16 20.18 4.10 17.27 Front Return, No OA, No EA 7.63 50.00 55.00 8.19 Johnson Controls...
  • Page 96 2. The heat section includes either gas, hot water, steam, or electric. 3. SU = Standard Unit DP = Discharge Plenum B = Bottom Discharge L = Left Discharge R = Right Discharge T = Top Discharge 4. Dimensions are ± 1 inch. Johnson Controls...
  • Page 97 2. The heat section includes either gas, hot water, steam, or electric. 3. SU = Standard Unit DP = Discharge Plenum B = Bottom Discharge L = Left Discharge R = Right Discharge T = Top Discharge 4. Dimensions are ± 1 inch. Johnson Controls...
  • Page 98 2. The heat section includes either gas, hot water, steam, or electric. 3. SU = Standard Unit DP = Discharge Plenum B = Bottom Discharge L = Left Discharge R = Right Discharge T = Top Discharge 4. Dimensions are ± 1 inch. Johnson Controls...
  • Page 99 Digit 41 – Pre-Evap Options (Pre-Evap Blank Sec- Based on the unit options selected, the configuration is a tion): None standard unit with heat, discharge plenum (B, L, R, T). For this example, the length of the unit is 333.00 inches. Johnson Controls...
  • Page 100 72.00 545.00 84.38 SU with Heat, Small Post-Evap Blank, DP (B, L, R, T) 383.90 96.05 379.40 91.55 72.00 451.40 84.38 SU with Heat, Large Post-Evap Blank, DP (B, L, R, T) 425.90 96.05 421.40 91.55 72.00 493.40 84.38 Johnson Controls...
  • Page 101 SU with Pre-Evap Blank, Heat, Large Post-Evap Blank, DP (B, L, R, T) 31.94 51.36 7.27 30.13 77.00 SU with Heat, Small Post-Evap Blank, DP (B, L, R, T) 31.94 51.36 7.27 30.13 77.00 SU with Heat, Large Post-Evap Blank, DP (B, L, R, T) 31.94 51.36 7.27 30.13 77.00 Johnson Controls...
  • Page 102 87.30 575.80 91.32 545.00 84.38 SU with Heat, Small Post-Evap Blank, DP (B, L, R, T) 394.90 91.55 87.30 482.20 91.32 451.40 84.38 SU with Heat, Large Post-Evap Blank, DP (B, L, R, T) 436.90 91.55 87.30 524.20 91.32 493.40 84.38 Johnson Controls...
  • Page 103 AHU curb LG and C dimension will have no value. 14 inches LD27618 Figure 16: 25–50 Ton Roof Curbs: Left Bottom Return Opening and Bottom Supply Opening without ERW Johnson Controls...
  • Page 104 33.73 7.27 30.13 77.00 SU with Heat, Small Post-Evap Blank, DP (B, L, R, T) 9.35 51.00 33.73 7.27 30.13 77.00 SU with Heat, Large Post-Evap Blank, DP (B, L, R, T) 9.35 51.00 33.73 7.27 30.13 77.00 Johnson Controls...
  • Page 105 Cond = Condenser RA = Return Air RAR = RA Right RAL = RA Left SA = Supply Air SU = Standard Unit DP = Discharge Plenum B = Bottom L = Left R = Right T = Top Johnson Controls...
  • Page 106 72.00 468.50 11.41 SU with Heat, Small Post-Evap Blank, DP (B, L, R, T) 307.40 96.05 302.90 91.55 72.00 374.90 11.41 SU with Heat, Large Post-Evap Blank, DP (B, L, R, T) 349.40 96.05 344.90 91.55 72.00 416.90 11.41 Johnson Controls...
  • Page 107 87.30 501.30 11.41 SU with Heat, Small Post-Evap Blank, DP (B, L, R, T) 324.90 96.05 320.40 91.55 87.30 407.70 11.41 SU with Heat, Large Post-Evap Blank, DP (B, L, R, T) 366.90 96.05 362.40 91.55 87.30 449.70 11.41 Johnson Controls...
  • Page 108 SA = Supply Air SU = Standard Unit DP = Discharge Plenum B = Bottom L = Left R = Right T = Top Supply/Return Air Duct Connections LEFT REAR FRONT RIGHT LD27611 Figure 18: Air Duct Configurations Johnson Controls...

  • Page 109: Unit Placement

    No obstructions should mal deflection. It is recommended that the unit(s) be be above the condensing unit section. installed no more than 15 feet from a main support Johnson Controls...
  • Page 110 60 inches 100 inches 60 inches NOTES: 1. 10-foot clearance minimum over the top of the condensing unit. 2. Only one adjacent wall can exceed unit height. 3. 12-foot clearance required to adjacent units. LD26889 Figure 19: Unit Clearances Johnson Controls...

  • Page 111: Guide Specifications

    8. All units' outdoor sound data shall be rated in ac- cordance with ANSI/AHRI 370-2015 “Sound Perfor- • The warranty shall include parts [and labor] only dur- mance Rating of Large Air-Cooled Outdoor Refriger- ing this period. ating and Air-Conditioning Equipment.” Johnson Controls...
  • Page 112 3. Electrical requirements for power supply wiring, in- cluding wiring diagrams for interlock and control wir- ing shall be supplied. Factory and field-installed wir- ing shall be clearly indicated. Johnson Controls...
  • Page 113 UV light operation when and life cycle requirements for ASHRAE 90.1-2016, the door is opened.] 2018 International Energy Conservation Code ® (IECC), and 2016 California Title 24 standards. Johnson Controls...
  • Page 114 G90 galvanized seals shall be fully adjustable and easily accessible. steel for corrosion resistance. Perimeter seals shall be permanently mounted to the wheel rim and not require adjustment. Seals that mount to the frame are not acceptable. Johnson Controls...
  • Page 115 An life L50 of at least 200,000 hours. All bearings shall access door shall be provided on at least one side of be factory lubricated and equipped with standard hy- the unit for fan/motor access. Johnson Controls...
  • Page 116 ASHRAE Standard 52.2. All filter holding frames shall be of heavy duty extruded aluminum construction de- signed for industrial applications. All filters shall be side accessible with access doors provided on both sides of the filter section. Johnson Controls...
  • Page 117 10. Inlet Guards [Optional] shall be provided on inlet of The UV lights (tubes) shall be shipped loose in pro- supply fan. tective packaging for installation by the contractor. Johnson Controls...
  • Page 118 The rollout switch shall discontinue furnace op- field-mounted by the installing contractor. The flue eration if the flue becomes restricted. outlet shall be located above the unit to help prevent recycling of combustion gases back through the heat exchanger. Johnson Controls...
  • Page 119 325 control system. Power connection to the heater shall pounds compressed air to ensure a leak-free coil. be through the power panel of the unit. Electric heat shall be tested and certified in accordance with UL 60335-2-40. Johnson Controls...
  • Page 120 Condenser fans shall be propeller type with h. Stainless steel nozzle inserts shall have metered aluminum blades, directly driven by permanently orifices, sized to provide even distribution of the lubricated open drip-proof type (ODP) motor. discharged steam, spaced for optimum steam absorption. Johnson Controls...
  • Page 121 VFD control keypads shall be located in the temperature and over-current conditions. Compressors control cabinet for accessibility and servicing while shall be vibration-isolated from the unit and installed in the unit is operating. an easily accessible area of the unit. All compressor-to- Johnson Controls...
  • Page 122 The display interface shall be installed on a hinge with a b. Sensor information for all devices connected to magnetic catch to allow wiring and electronics behind the unit and setpoints. the display to be easily accessed. Johnson Controls...
  • Page 123 CO sensors. smoke detector and shall override a smoke detector l. The control shall have a programmable maxi- shutdown. mum OA damper position for IAQ operation. Johnson Controls...
  • Page 124 The control shall have compressor safety moni- experience and configurable controls. The system toring. shall consist of Smart Equipment technology and shall be capable to interface with Verasys and Meta- ™ aa. The control shall have FDD alarm monitoring for systems. ® economizer operation. Johnson Controls...
  • Page 125 (especially those not built with weatherproof enclosures), VFDs, and end devices shall be effectively covered for protection against rain, snow, wind, dirt, sun fading, road salt/chemicals, rust, and corrosion during shipping cycle. Equipment shall remain clean and dry. Johnson Controls...
  • Page 126 Subject to change without notice. | Form 5513350-JTG-1018 | New Release | All rights reserved. The Smart Equipment logo is a trademark of Johnson Controls in the United States and other countries. It is a part of the Johnson Controls product portfolio.

This manual is also suitable for:

Nexuspremier 50 tonNexuspremier 30 tonNexuspremier 40 ton

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