Johnson Controls L-Series Engineering Manual
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Johnson Controls L-Series Engineering Manual

Water-cooled self-contained units
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ENGINEERING GUIDE
FORM 145.05-EG2 (618)
Water-Cooled
Self-Contained Units
L-Series, Vertical

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Summary of Contents for Johnson Controls L-Series

  • Page 1 ENGINEERING GUIDE FORM 145.05-EG2 (618) Water-Cooled Self-Contained Units L-Series, Vertical...
  • Page 2 095 = 95 Ton POWER SUPPLY CONNECTION H - High Temperature 105 = 105 Ton SPT = Single Point Terminal Block SPD = Single Point Disconnect Switch DPT = Dual Point Terminal Block DPD = Dual Point Disconnect Switch JOHNSON CONTROLS...

  • Page 3: Table Of Contents

    FEATURES AND OPTIONS ............................ 11 SELECTION PROCEDURE ............................15 OPERATING LIMITATIONS ............................18 PHYSICAL DATA ..............................19 COOLING PERFORMANCE DATA ........................22 DIMENSIONAL DATA .............................33 AIR PRESSURE DROPS ............................57 SUPPLY FAN DATA ..............................63 WATER PRESSURE DROP ............................65 ELECTRICAL DATA ...............................68 OPERATING WEIGHTS ............................69 GUIDE SPECIFICATIONS ............................71 JOHNSON CONTROLS...
  • Page 4 FORM 145.05-EG2 (618) THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...

  • Page 5: Features And Benefits

    • Evaporator coil circuiting supports low leaving air temperature designs to reduce design air flow and reduce fan operating energy. • High efficiency evaporator coil available for lower air flow, low leaving air tempera- ture applications. JOHNSON CONTROLS...
  • Page 6 • Multiple scroll compressors, due to their smoother flow and stepped operation, mini- mize the sound associated with the refrigerant system. • The compressors are located out side air stream, including all the refrigerant piping and condenser water piping. JOHNSON CONTROLS...
  • Page 7 • Minimum class II fans for high static requirements. Class III fans available. • Supply fan and motor assembly is isolated with springs to minimize the vibration and sound transmission to the rest of the unit and beyond. • Bearing lubrication line brought to one location for easy maintenance. JOHNSON CONTROLS...
  • Page 8 • Water economy coil with optional mechanically cleanable return bends is available. • Condenser water flow through the unit is enabled only in cooling mode. Minimum condenser water temperature for unit compressor operation in this mode is 40.0°F. JOHNSON CONTROLS...
  • Page 9 Various sections are as follows: • Refrigerant and heating section consisting of evaporator coil, water economy coil, condensers, compressors, condenser water piping, and heating options. JOHNSON CONTROLS...
  • Page 10 Different control options: • Dry bulb • Single enthalpy • Dual enthalpy • Inlet sound attenuating plenum attaches to the filter section for further reducing the sound emitted through the unit air inlet. JOHNSON CONTROLS...

  • Page 11: Features And Options

    FORM 145.05-EG2 (618) Features and Options JOHNSON CONTROLS...
  • Page 12 FORM 145.05-EG2 (618) Features and Options (Cont’d) JOHNSON CONTROLS...
  • Page 13 FORM 145.05-EG2 (618) JOHNSON CONTROLS...
  • Page 14 FORM 145.05-EG2 (618) THIS PAGE INTENTIONALLY LEFT BLANK. JOHNSON CONTROLS...

  • Page 15: Selection Procedure

    Table 19 and Table 20 on page 57. 12. With all options selected, add air pressure drops of all the components selected, in- cluding evaporator coil, to external static pressure required to determine total static pressure required for the supply air fan. JOHNSON CONTROLS...
  • Page 16 18. The component weights are in Table 30 on page 69 and Table 31 on page 70. Add weights of the components covered by the options selected. To obtain operat- ing weight, add water weights corresponding to the option selected carrying water weights. JOHNSON CONTROLS...
  • Page 17 0.914 0.899 0.944 0.934 0.973 0.968 1.000 1.000 1.026 1.031 1.052 1.061 1.076 1.090 1.100 1.118 TABLE 3 - HOT WATER HEATING CORRECTION FACTORS AIR FLOW PERCENT TOTAL CAPACITY 0.903 0.929 0.953 0.977 1.000 1.020 1.042 1.061 1.082 JOHNSON CONTROLS...

  • Page 18: Operating Limitations

    90.0°F Entering Cond. Water Temp with Condenser 40.0°F 90.0°F Water Control Valve Entering Cond. Water Temp w/o Condenser 60.0°F 90.0°F Water Control Valve Steam Heat-Steam Pressure 5 psig 15 psig Hot Water Heat Entering Water Temp 140.0°F 160.0°F JOHNSON CONTROLS...

  • Page 19: Physical Data

    Electric Heat - KW - 240/3/60 17.5 17.5/35.0 17.5/35.0 17.5/35.0 35.0/52.5 35.0/52.5 Nominal Electric Heat - KW - 480/3/60 17.5 17.5/35.0 17.5/35.0 17.5/35.0 35.0/52.5 35.0/52.5 Nominal Electric Heat - KW - 600/3/60 17.5 17.5/35.0 17.5/35.0 17.5/35.0 35.0/52.5 35.0/52.5 Nominal JOHNSON CONTROLS...
  • Page 20 Steam Coil Consult Factory Heating Electric Heat - KW - 240/3/60 Nominal 17.5/35.0 17.5/35.0 35.0/52.5 35.0/52.5 Electric Heat - KW - 480/3/60 Nominal 17.5/35.0 17.5/35.0 35.0/52.5 35.0/52.5 Electric Heat - KW - 600/3/60 Nominal 17.5/35.0 17.5/35.0 35.0/52.5 35.0/52.5 JOHNSON CONTROLS...
  • Page 21 LSWU035 23.0 23.0 LSWU040 27.0 27.0 LSWU050 28.5 25.0 25.0 LSWU060 26.5 26.5 27.5 LSWU070 22.5 22.5 22.50 22.5 LSWU080 23.25 23.25 25.3 25.3 LSWU095 19.0 19.0 23.50 23.5 23.5 23.5 LSWU105 19.0 19.0 23.50 23.5 27.5 27.5 JOHNSON CONTROLS...

  • Page 22: Cooling Performance Data

    65.1 226 59.9 59.8 16.6 77.7 225 60.0 59.9 17.0 64.4 NOTE: EDB-entering dry bulb temp, EWB-entering wet bulb temp, EWT-entering water temp, LWT-leaving water temp, LDB-leaving dry bulb temp, LWB-leaving wet bulb temp, TMBH-total capacity, SMBH-sensible capacity JOHNSON CONTROLS...
  • Page 23 84.2 287 59.5 59.4 22.9 100.3 285 59.7 59.6 23.4 83.3 NOTE: EDB-entering dry bulb temp, EWB-entering wet bulb temp, EWT-entering water temp, LWT-leaving water temp, LDB-leaving dry bulb temp, LWB-leaving wet bulb temp, TMBH-total capacity, SMBH-sensible capacity JOHNSON CONTROLS...
  • Page 24 90.2 311 59.9 59.8 24.7 107.4 310 59.9 59.8 25.2 89.2 NOTE: EDB-entering dry bulb temp, EWB-entering wet bulb temp, EWT-entering water temp, LWT-leaving water temp, LDB-leaving dry bulb temp, LWB-leaving wet bulb temp, TMBH-total capacity, SMBH-sensible capacity JOHNSON CONTROLS...
  • Page 25 100.5 357 60.6 60.5 27.3 119.9 356 60.6 60.5 27.8 99.5 NOTE: EDB-entering dry bulb temp, EWB-entering wet bulb temp, EWT-entering water temp, LWT-leaving water temp, LDB-leaving dry bulb temp, LWB-leaving wet bulb temp, TMBH-total capacity, SMBH-sensible capacity JOHNSON CONTROLS...
  • Page 26 125.6 446 60.2 60.1 32.6 149.6 443 60.4 60.3 33.2 123.9 NOTE: EDB-entering dry bulb temp, EWB-entering wet bulb temp, EWT-entering water temp, LWT-leaving water temp, LDB-leaving dry bulb temp, LWB-leaving wet bulb temp, TMBH-total capacity, SMBH-sensible capacity JOHNSON CONTROLS...
  • Page 27 149.5 528 60.3 60.2 40.7 178.1 526 60.4 60.3 41.6 148.0 NOTE: EDB-entering dry bulb temp, EWB-entering wet bulb temp, EWT-entering water temp, LWT-leaving water temp, LDB-leaving dry bulb temp, LWB-leaving wet bulb temp, TMBH-total capacity, SMBH-sensible capacity JOHNSON CONTROLS...
  • Page 28 182.8 919.6 643.7 60.5 60.4 49.6 217.8 911.5 640.7 60.6 60.5 50.6 180.7 NOTE: EDB-entering dry bulb temp, EWB-entering wet bulb temp, EWT-entering water temp, LWT-leaving water temp, LDB-leaving dry bulb temp, LWB-leaving wet bulb temp, TMBH-total capacity, SMBH-sensible capacity JOHNSON CONTROLS...
  • Page 29 198.9 999.5 775.7 58.3 58.2 54.2 236.9 993.4 773.6 58.4 58.3 55.3 197.0 NOTE: EDB-entering dry bulb temp, EWB-entering wet bulb temp, EWT-entering water temp, LWT-leaving water temp, LDB-leaving dry bulb temp, LWB-leaving wet bulb temp, TMBH-total capacity, SMBH-sensible capacity JOHNSON CONTROLS...
  • Page 30 247.0 1243 809.7 58.4 58.3 67.1 294.4 1230 804.6 58.5 58.4 68.3 243.8 NOTE: EDB-entering dry bulb temp, EWB-entering wet bulb temp, EWT-entering water temp, LWT-leaving water temp, LDB-leaving dry bulb temp, LWB-leaving wet bulb temp, TMBH-total capacity, SMBH-sensible capacity JOHNSON CONTROLS...
  • Page 31 278.2 1388 878.6 57.2 57.1 79.2 331.7 1378 874.5 57.3 57.2 80.7 275.5 NOTE: EDB-entering dry bulb temp, EWB-entering wet bulb temp, EWT-entering water temp, LWT-leaving water temp, LDB-leaving dry bulb temp, LWB-leaving wet bulb temp, TMBH-total capacity, SMBH-sensible capacity JOHNSON CONTROLS...
  • Page 32 57.5 319.5 306.4 308.1 LSWU105 30,150 64.3 58.0 356.2 348.9 308.1 36,100 65.2 58.4 386.9 384.7 308.1 24,200 63.3 57.5 319.7 306.4 311.1 LWSU105 - HIGHEFF 27,150 63.8 57.8 338.9 328.6 311.1 30,100 64.3 58.0 356.1 348.6 311.1 JOHNSON CONTROLS...

  • Page 33: Dimensional Data

    FORM 145.05-EG2 (618) Dimensional Data OVERVIEW OF COMBINED UNIT LSWU025–040 MODELS JOHNSON CONTROLS...
  • Page 34 FORM 145.05-EG2 (618) Dimensional Data (Cont’d) OVERVIEW OF SPLIT SHIPMENT LSWU025–040 MODELS JOHNSON CONTROLS...
  • Page 35 FORM 145.05-EG2 (618) OVERVIEW OF SERVICE CLEARANCES LSWU025–040 MODELS JOHNSON CONTROLS...
  • Page 36 SOUND-ATTENUATING PLENUM SHIPS SEPARATELY FROM BASE UNIT SEGMENT(S). 66.09 OPTION IS NOT AVAILABLE WITH DUCTED CONNECTIONS. WITH THIS OPTION THE TOP ROW OF FILTERS CAN ONLY BE 5.95 REMOVED FROM THE END OF THE FILTER RACK. 23.94 JOHNSON CONTROLS OPTIONAL SOUND-ATTENUATING (INLET) PLENUM OPTION...
  • Page 37 FORM 145.05-EG2 (618) SOUND ATTENUATING PLENUM SERVICE CLEARANCE LSWU025–040 MODELS JOHNSON CONTROLS...
  • Page 38 4" PRE-FILTER + 4" HIGH EFFICIENCY FILTER 80.68 114.90 "A" COIL SECTION *MINIMUM INTERIOR DUCT DIMENSIONS ("B") FILTER SECTION 26.47* AIRSIDE ECONOMIZER 34.22 3.86* 55.47* 9.26* 74.06 2.00 NOTE: AIRSIDE ECONOMIZER WILL BE SHIPPED SEPARATELY 55.47* 11.51* 26.47* 78.32 43.41* JOHNSON CONTROLS...
  • Page 39 FORM 145.05-EG2 (618) AIRSIDE ECONOMIZER SERVICE CLEARANCES LSWU025–040 MODELS JOHNSON CONTROLS...
  • Page 40 FORM 145.05-EG2 (618) Dimensional Data (Cont’d) MOUNTING PAD LOCATIONS LSWU025–040 MODELS REAR FILTER SECTION COIL SECTION MOUNTING LOCATIONS 35.00 LEFT FAN SECTION RIGHT 70.13 FRONT JOHNSON CONTROLS...
  • Page 41 FORM 145.05-EG2 (618) OVERVIEW OF COMBINED UNIT LSWU050–060 MODELS JOHNSON CONTROLS...
  • Page 42 FORM 145.05-EG2 (618) Dimensional Data (Cont’d) OVERVIEW OF SPLIT SHIPMENT LSWU050–060 MODELS JOHNSON CONTROLS...
  • Page 43 FORM 145.05-EG2 (618) OVERVIEW OF SERVICE CLEARANCES LSWU050–060 MODELS JOHNSON CONTROLS...
  • Page 44 SOUND-ATTENUATING PLENUM SHIPS SEPARATELY FROM BASE UNIT SEGMENT(S). 85.59 OPTION IS NOT AVAILABLE WITH DUCTED CONNECTIONS WITH THIS OPTION THE TOP ROW OF FILTERS CAN ONLY BE 23.91 7.86 REMOVED FROM THE END OF THE FILTER RACK. JOHNSON CONTROLS OUND-ATTENUATING (INLET) PLENUM...
  • Page 45 FORM 145.05-EG2 (618) SOUND ATTENUATING PLENUM SERVICE CLEARANCES LSWU050–060 MODELS JOHNSON CONTROLS...
  • Page 46 4" PRE-FILTER + 4" HIGH EFFICIENCY FILTER 86.25 120.47 *MINIMUM INTERIOR DUCT DIMENSIONS FAN SECTION "A" ("B") COIL SECTION FILTER SECTION 26.47* 34.22 AIRSIDE ECONOMIZER 75.47* 8.26* 3.86* 92.06 2.97 NOTE: AIRSIDE ECONOMIZER WILL BE SHIPPED SEPARATELY 75.47* 11.49* 26.47* 88.80 53.89* JOHNSON CONTROLS...
  • Page 47 FORM 145.05-EG2 (618) AIRSIDE ECONOMIZER SERVICE CLEARANCES LSWU050–060 MODELS JOHNSON CONTROLS...
  • Page 48 FORM 145.05-EG2 (618) Dimensional Data (Cont’d) MOUNTING PAD LOCATIONS LSWU050–060 MODELS REAR FILTER SECTION MOUNTING 14X 2.00 COIL SECTION LOCATIONS 14X 6.00 RIGHT 35.12 FAN SECTION LEFT 75.75 FRONT JOHNSON CONTROLS...
  • Page 49 FORM 145.05-EG2 (618) OVERVIEW OF COMBINED UNIT LSWU070–105 MODELS JOHNSON CONTROLS...
  • Page 50 FORM 145.05-EG2 (618) Dimensional Data (Cont’d) OVERVIEW OF SPLIT SHIPMENTS LSWU070–105 MODELS JOHNSON CONTROLS...
  • Page 51 FORM 145.05-EG2 (618) OVERVIEW OF SERVICE CLEARANCES LSWU070–105 MODELS JOHNSON CONTROLS...
  • Page 52 4" PRE-FILTER + 4" HIGH EFFICIENCY FILTER 106.31 OPTION IS NOT AVAILABLE WITH DUCTED CONNECTIONS WITH THIS OPTION THE TOP ROW OF FILTERS CAN ONLY BE OPTIONAL SOUND-ATTENUATING (INLET) PLENUM REMOVED FROM THE END OF THE FILTER RACK. JOHNSON CONTROLS NOTES: SOUND-ATTENUATING PLENUM OPTION CAN BE COMBINED...
  • Page 53 FORM 145.05-EG2 (618) SOUND ATTENUATING PLENUM SERVICE CLEARANCE LSWU070–105 MODELS JOHNSON CONTROLS...
  • Page 54 4" PRE-FILTER + 4" HIGH EFFICIENCY FILTER 106.31 156.53 *MINIMUM INTERIOR DUCT DIMENSIONS FAN SECTION "A" COIL SECTION ("B") FILTER SECTION 35.47* 50.22 AIRSIDE ECONOMIZER 7.36* 101.47* 8.26* 118.00 4.25 NOTE: AIRSIDE ECONOMIZER WILL BE SHIPPED SEPARATELY 101.47* 12.52* 35.47* 100.99 55.04* JOHNSON CONTROLS...
  • Page 55 FORM 145.05-EG2 (618) AIRSIDE ECONOMIZER SERVICE CLEARANCES LSWU070–105 MODELS JOHNSON CONTROLS...
  • Page 56 FORM 145.05-EG2 (618) Dimensional Data (Cont’d) MOUNTING PAD LOCATIONS LSWU070–105 MODELS REAR FILTER SECTION MOUNTING COIL SECTION LOCATIONS 10X 2.00 LEFT LEFT 10X 6.00 RIGHT 52.00 (SPLIT LINE AT FLOOR ELEVATION) FAN SECTION 96.00 FRONT JOHNSON CONTROLS...

  • Page 57: Air Pressure Drops

    0.14 0.10 0.28 0.20 0.10 0.05 36,100 1.08 0.19 0.13 0.40 0.29 0.14 24,200 1.03 0.09 0.07 0.18 0.13 0.06 105 - HiEff 27,150 1.20 6.98 0.08 0.23 0.16 0.08 0.05 30,100 1.37 0.14 0.10 0.28 0.20 0.10 JOHNSON CONTROLS...
  • Page 58 10,000 10,500 LSWU032 Air Pressure Drops Across Clean Filters 0.450 0.400 0.350 4" (MERV 8) 0.300 4" + 4" (MERV 13 + MERV 8) 0.250 0.200 0.150 0.100 0.050 0.000 7,000 8,000 9,000 10,000 11,000 12,000 13,000 14,000 JOHNSON CONTROLS...
  • Page 59 12,000 13,000 14,000 15,000 16,000 LSWU040 Air Pressure Drops Across Clean Filters 0.600 0.500 4" (MERV 8) 0.400 4" + 4" (MERV 13 + MERV 8) 0.300 0.200 0.100 0.000 9,000 10,000 11,000 12,000 13,000 14,000 15,000 16,000 JOHNSON CONTROLS...
  • Page 60 14,000 15,000 16,000 17,000 18,000 19,000 20,000 LSWU060 Air Pressure Drops Across Clean Filters 0.600 0.500 4" (MERV 8) 0.400 4" + 4" (MERV 13 + MERV 8) 0.300 0.200 0.100 0.000 14,000 16,000 18,000 20,000 22,000 24,000 JOHNSON CONTROLS...
  • Page 61 19,500 21,500 23,500 25,500 27,500 29,500 LSWU080 Air Pressure Drops Across Clean Filters 0.600 0.500 4" (MERV 8) 0.400 4" + 4" (MERV 13 + MERV 8) 0.300 0.200 0.100 0.000 22,500 24,500 26,500 28,500 30,500 32,500 34,500 JOHNSON CONTROLS...
  • Page 62 26,000 28,000 30,000 32,000 34,000 LSWU105 Air Pressure Drops Across Clean Filters 0.700 0.600 4" (MERV 8) 0.500 4" + 4" (MERV 13 + MERV 8) 0.400 0.300 0.200 0.100 0.000 24,000 26,000 28,000 30,000 32,000 34,000 36,000 JOHNSON CONTROLS...

  • Page 63: Supply Fan Data

    18.5 1108.3 22.7 1184.9 27.0 20,000 895.8 12.3 984.9 16.6 1069.6 21.1 1147.1 25.7 1219.3 30.3 22,000 950.8 14.5 1032.6 19.1 1112.5 23.9 1188.2 28.9 1258.5 33.9 24,000 1008.5 17.1 1083.9 21.8 1158.5 27.0 1231.0 32.3 1299.4 37.8 JOHNSON CONTROLS...
  • Page 64 27.6 1243.1 34.9 1314.7 43.3 32,000 1046.5 15.3 1133.3 21.0 1212.6 28.9 1283.2 37.0 1347.1 45.1 34,000 1089.8 17.5 1173.4 22.5 1250.9 30.2 1322.2 38.9 Consult Factory 36,000 1134.2 20.2 1214.4 24.3 1289.9 31.6 Consult Factory Consult Factory JOHNSON CONTROLS...

  • Page 65: Water Pressure Drop

    Condenser Water PD Water Economizer PD (when ac ve) Condenser + Water Econ PD Water Flow (GPM) LSWU050-060 Water Pressure Drop Condenser Water PD Water Economizer PD (when ac ve) Condenser + Water Econ PD Water Flow (GPM) JOHNSON CONTROLS...
  • Page 66 Water Economizer PD (when ac ve) Condenser + Water Econ PD 1.00 Water Flow (GPM) LSWU095-105 Water Pressure Drop 100.00 Condenser Water PD 10.00 Water Economizer PD (when ac ve) Condenser + Water Econ PD 1.00 Water Flow (GPM) JOHNSON CONTROLS...
  • Page 67 FORM 145.05-EG2 (618) HOT WATER PRESSURE DROPS (INCHES W.C.) LSWU025-040 Hot Water Pressure Drop Water Flow (GPM) LSWU050-060 Hot Water Pressure Drop Water Flow (GPM) LSWU070-105 Hot Water Pressure Drop 100.00 10.00 1.00 Water Flow (GPM) JOHNSON CONTROLS...

  • Page 68: Electrical Data

    42.5 21.2 18.6 TABLE 29 - ELECTRIC HEAT CAPACITY, MBH UNIT SUPPLY VOLTAGE ELECTRIC HEAT KW 208/3/60 230/3/60 460/3/60 575/3/60 17.5 36.5 40.3 20.2 16.1 73.0 80.7 40.3 32.3 52.5 109.5 121.0 60.5 48.4 145.9 161.4 80.7 64.6 JOHNSON CONTROLS...

  • Page 69: Operating Weights

    Prefilter (MERV 13 + 8) Plenums Inlet Plenum - Sound Attenuating Outlet Plenum - Half Outlet Plenum - Full Inlet Plenum - Air Economy Electric Heat Section **Weights shown represent approximate operating weights and they have a ±10% accuracy. JOHNSON CONTROLS...
  • Page 70 Plenums Inlet Plenum - Sound Attenuating Outlet Plenum - Half Outlet Plenum - Full Inlet Plenum - Air Economy 1540 1540 1540 1540 Electric Heat Section **Weights shown represent approximate operating weights, and they have a ±10% accuracy. JOHNSON CONTROLS...

  • Page 71: Guide Specifications

    12 fins per inch. An adjustable thermal expansion valve (TXV) including an external equalizer shall feed each circuit. The TXV shall be sized to operate with mini- mum entering condenser water temperatures of 55.0°F. The coil shall be leak tested with high-pressure nitrogen in a warm water bath. JOHNSON CONTROLS...
  • Page 72 [A non-averaging type freezestat shall be factory installed. When the freezestat senses the entering air temperature is below the set point, the unit shall be put into the unoccupied mode and the economizer valve shall be driven to 100% open and the condenser valve shall be driven closed.] JOHNSON CONTROLS...
  • Page 73 Bearing diameter shall be the same size as the main shaft diameter. Bearings shall be sized to pro- vide an L-50 life at 200,000 hours. The fan bearings shall have extended grease lines to a common location. JOHNSON CONTROLS...
  • Page 74 Each compres- sor will have individual refrigerant circuit. Compressor RLA will not exceed 21.2 Amps at 460 Volts or 47 Amps at 208 Volts. Compressors shall be 15 nominal horsepower or lower. JOHNSON CONTROLS...
  • Page 75 • Supply Air Temperature Reset via VFD Speed (variable air volume (VAV) only) • Supply Air Temperature Reset Limits Safeties • Low Suction Pressure (1 per compressor) • High Discharge Pressure (1 per compressor) • Compressor Motor Overload (1 per compressor) • Supply Fan Fail • Low Entering Air Temperature JOHNSON CONTROLS...
  • Page 76 • Return Air Humidity Sensor Failure (Units with Airside Economizer) • Duct Pressure Transducer Failure • Low Water Flow (Units with Water Flow Switch) • Low Water Temperature • Entering Water Temperature Sensor Failure • Leaving Water Temperature Sensor Failure JOHNSON CONTROLS...
  • Page 77 1. Waterside Economizer with Adjustable Approach setpoint 2. Airside Dry Bulb (Units Equipped with Mixing Box) 3. Airside Single Enthalpy (Units Equipped with Mixing Box) 4. Airside Dual Enthalpy (Units Equipped with Mixing Box) Note: Economizer sequences allow for economizing with mechanical cooling when JOHNSON CONTROLS...
  • Page 78 The valve actuator shall be controlled through the factory installed main unit control system to maintain refrigerant head pres- sure by reducing the water flow as necessary to allow proper functioning of thermostatic JOHNSON CONTROLS...
  • Page 79 Service Clearance requirements on all four sides shall be indicated clearly on the submit- tal drawings. Optionally, Unit shall require NO MORE THAN 3 inches of clearance on two sides so that the unit may be placed in a corner. JOHNSON CONTROLS...
  • Page 80 Duct openings for the discharge plenum shall not require field cutting or modifications. The discharge plenum shall be constructed of formed 16-gauge pre-painted galvanized steel. The exterior panels shall be fabricated from 18-gauge pre-painted galvanized steel. JOHNSON CONTROLS...
  • Page 81 20-gauge galvanized steel perforated metal liner. The plenum shall be available on the units without low service clearance units. This option is available only when airside economizer is not chosen. JOHNSON CONTROLS...
  • Page 82 Printed on recycled paper Form: 145.05-EG2 (618) Supersedes: 145.05-EG2 (1216) © 2018 Johnson Controls, Inc. P.O. Box 423, Milwaukee, WI 53201 Printed in USA www.johnsoncontrols.com Issued on 06/04/2018...

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