Trane Horizon OABE/F Installation, Operation And Maintenance Manual
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Trane Horizon OABE/F Installation, Operation And Maintenance Manual

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Installation, Operation,
and Maintenance
Horizon™ Outdoor Air Unit
Water Source Heat Pump
Models: OABE/F, OAGE/F, OAKE/F, OANE/F
Important:
Proper execution of the tasks outlined in this Installation, Operation, and Maintenance manual
require and assume the technician has been certified as a start up technician for the Horizon Outdoor
Air unit. This includes working knowledge of the Tracer TU program.
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.
L'installation et l'entretien de cet équipement doivent être assurés exclusivement par du personnel qualifié.
L'installation, la mise en service et l'entretien d'équipements de chauffage, de ventilation et de climatisation
(CVC) présentent un danger et requièrent des connaissances et une formation spécifiques. Une installation,
un réglage ou une modification inappropriés d'un équipement par une personne non qualifiée peut provoquer
des blessures graves, voire la mort. Lors de toute intervention sur l'équipement, respectez les consignes de
sécurité figurant dans la documentation, ainsi que sur les pictogrammes, autocollants et étiquettes apposés
sur l'équipement.
November 2019
SAFETY WARNING
AVERTISSEMENT DE SÉCURITÉ
OAU-SVX004D-EN

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  • Page 1 Installation, Operation, and Maintenance Horizon™ Outdoor Air Unit Water Source Heat Pump Models: OABE/F, OAGE/F, OAKE/F, OANE/F Important: Proper execution of the tasks outlined in this Installation, Operation, and Maintenance manual require and assume the technician has been certified as a start up technician for the Horizon Outdoor Air unit.
  • Page 2 Hydrogen, Chlorine, Fluorine and Carbon (HCFCs). Not all refrigerants containing these compounds have the same potential impact to the environment. Trane advocates the responsible handling of all refrigerants-including industry replacements for CFCs and HCFCs such as saturated or unsaturated HFCs and HCFCs.
  • Page 3 Introduction WARNING AVERTISSEMENT Personal Protective Equipment (PPE) Équipements de protection individuelle Required! (EPI) obligatoires ! Failure to wear proper PPE for the job being undertaken En cas d’équipement de protection individuelle could result in death or serious injury. Technicians, in inadapté...
  • Page 4 Introduction WARNING AVERTISSEMENT Refrigerant under High Pressure! Risque d’explosion et gaz mortels ! Failure to follow instructions below could result in an Le non-respect de toutes les consignes de manipulation explosion which could result in death or serious injury des fluides frigorigènes peut entraîner la mort ou des or equipment damage.
  • Page 5 3. Extinguish any open flame. This document and the information in it are the property of Trane, and may not be used or reproduced in whole or in 4. Immediately call your gas supplier. part without written permission. Trane reserves the right...

  • Page 6: Table Of Contents

    Table of Contents Model Number Descriptions Indoor WSHP Units ....8 ....25 Horizon Outdoor Air Unit Water Source Heat OABE Units .
  • Page 7 Table of Contents System Configuration and Pre-Start ..57 Startup ....... . 60 Indirect Gas-Fired Heating Startup .

  • Page 8: Model Number Descriptions

    Model Number Descriptions Horizon Outdoor Air Unit Water Source Heat Pump Model: OABE, OAGE Digit 1, 2 — Unit Type Digit 11 — Evaporator Type Dual Fuel (PRI-HW/SEC-DF) Dual Fuel (PRI-HW/ OA = Outdoor Air DX 4-Row Interlaced SEC-ELEC-STAGED)R= Dual Fuel Digit 3 —...
  • Page 9 Frost Protection w/VFD 65 SCCR Non-Fused ERV—Aluminum Construction 00 = Non-DDC—Electromechanical w/Convenience Outlet w/Bypass AA = Trane—Discharge Air Control ERV—Aluminum Construction w/LON Read-Write w/Display Digit 37 — Air Flow Monitoring with Frost Protection w/VFD AB = Trane—Space Control w/LON No Airflow Monitoring Read-Write w/Display Digit 32 —...

  • Page 10: Models: Oade, Oake, Oane

    Model Number Descriptions Models: OADE, OAKE, OANE Digit 1, 2 — Unit Type Digit 14 — Condenser Digit 20 — Heat Type (PRI/SEC) OA = Outdoor Air Water-Cooled DX Condenser No Heat Copper/Steel Indirect-Fired (IF) Digit 3 — Cabinet Size Water-Cooled DX Condenser Electric—Staged 625 cfm–4,000 cfm...
  • Page 11 Digit 25, 26 — Unit Controls Digit 29 — Powered Exhaust Fan Primary Heat Source Motor (hp) 00 = Non DDC—Electromechanical AA = Trane—Discharge Air Control No Powered Exhaust ELEC HOT WATER w/LON Read-Write w/Display 1/2 hp—1800 rpm No Heat...
  • Page 12 Model Number Descriptions Digit 34 — Filtration Options Digit 38 — Accessories Aluminum Mesh Intake Filters No Options (ALM) LED Service Light in Supply MERV-8,30%, and ALM Fan Section MERV-13, 80%, and ALM LED Service Light in Exhaust MERV-14, 95%, and ALM Fan Section MERV-8 30%, MERV-13 80%, and LED Service Light in Supply and...

  • Page 13: General Information

    General Information Overview of Manual Indoor Fan Failure Input Note: One copy of this document ships inside the control The Indoor Fan Failure Switch (IFFS) is connected to verify panel of each unit and is customer property. It must indoor fan operation. be retained by the unit’s maintenance personnel.

  • Page 14: Space Temperature / Rh Sensor (Optional)

    General Information Space Temperature / RH Sensor (Optional) Through the Base Electrical with Disconnect Switch Field installed, wall mounted temperature sensor (BAYSENS036A) and humidity to control space cooling, Factory installed 3-pole, molded case disconnect switch heating and dew point. with provisions for through the base electrical connections will be included.

  • Page 15: Unit Inspection

    General Information Unit Inspection • Wash clothes separately from other clothing: rinse washer thoroughly. • Operations such as sawing, blowing, tear-out, and WARNING spraying may generate fiber concentrations requiring additional respiratory protection. Use the appropriate Fiberglass Wool! NIOSH approved respiration in these situations. Product may contain fiberglass wool.

  • Page 16: Unit Clearances, Curb Dimensions, And Dimensional Data

    Unit Clearances, Curb Dimensions, and Dimensional Data Outdoor WSHP Units Figure 1. Typical installation clearances for OABE unit WARNING Combustible Materials! Failure to maintain proper clearance between the unit 4'-0" heat exchanger, vent surfaces and combustible materials could cause a fire which could result in death 3'-0"...
  • Page 17 Unit Clearances, Curb Dimensions, and Dimensional Data Curb Dimensions Dimensional Data Figure 3. Unit curb data for OABE 3–9 tons Figure 5. Unit dimensional data for OABE 3–9 tons (in.) " 2 " GUTTER B DETAIL 10 " 4 " 27 8 "...

  • Page 18: Indirect-Fired Oage Units

    Unit Clearances, Curb Dimensions, and Dimensional Data Indirect-Fired OAGE Units Figure 6. Unit dimensional data for OABE 3–9 tons with auxiliary cabinet (in.) Unit Clearances Figure 8. Typical installation clearances for indirect- fired OAGE unit (in.) Note: Certain options require auxiliary cabinet. Refer to project-specific unit submittals.
  • Page 19 Unit Clearances, Curb Dimensions, and Dimensional Data Curb Dimensions Figure 9. Typical installation clearances for indirect- fired OAGE unit with auxiliary cabinet (in.) Figure 10. Unit curb data for indirect-fired OAGE (in.)   '(7$,/ '  3,3( &+$6( *877(5 6&$/(       ...
  • Page 20 Unit Clearances, Curb Dimensions, and Dimensional Data Dimensional Data Figure 13. Unit dimensional data for indirect-fired OAGE with auxiliary cabinet (in.) Figure 12. Unit dimensional data for indirect-fired OAGE (in.) FRONT VIEW 87.42 74.41 FRONT VIEW 87.42 74.41 73.06 36.03 73.06 ELECTRIC DISCONNECT...

  • Page 21: Oake Units

    Unit Clearances, Curb Dimensions, and Dimensional Data OAKE Units Figure 15. Typical installation clearances for OAKE unit with auxiliary cabinet (in.) Unit Clearances Figure 14. Typical installation clearances for OAKE unit (in.) Note: Certain options require auxiliary cabinet. Refer to project-specific unit submittals.
  • Page 22 Unit Clearances, Curb Dimensions, and Dimensional Data Dimensional Data Figure 17. Unit curb data for OAKE 12–30 tons with auxiliary cabinet (in.) Figure 18. Unit dimensional data for OAKE 12–30 tons (in.) GUTTER A DETAIL GUTTER B DETAIL 2½ FRONT VIEW 6½...

  • Page 23: Oane Units

    Unit Clearances, Curb Dimensions, and Dimensional Data Figure 19. Unit dimensional data for OAKE 12–30 tons with auxiliary cabinet (in.) OANE Units Unit Clearances FRONT VIEW 86.394 Figure 20. Typical installation clearances for OANE unit 60.467 (in.) 83.565 67.943 81.536 26.046 5.964 60.000...
  • Page 24 Unit Clearances, Curb Dimensions, and Dimensional Data Figure 21. Typical installation clearances for OANE unit Figure 23. Unit curb data for OANE 30–54 tons with with auxiliary cabinet (in.) auxiliary cabinet (in.) Gutter A Gutter B Detail Detail 4-1/8 2-1/2 6-1/2 6-1/2 Gutter A...

  • Page 25: Indoor Wshp Units

    Unit Clearances, Curb Dimensions, and Dimensional Data Figure 24. Unit dimensional data for OANE 30–54 tons Figure 25. Unit dimensional data for OANE 30–54 tons (in.) with auxiliary cabinet (in.) FRONT VIEW FRONT VIEW 93.405 93.405 67.467 67.467 26.036 67.000 95.065 79.176 95.065...
  • Page 26 Unit Clearances, Curb Dimensions, and Dimensional Data Dimensional Data Figure 27. Unit dimensional data for indoor OABE WSHP with horizontal supply/return (no ERV Figure 26. Unit dimensional data for indoor OABE or exhaust fan) (in.) WSHP with horizontal supply and no return (in.) BACK VIEW BACK VIEW...

  • Page 27: Oage Units

    Unit Clearances, Curb Dimensions, and Dimensional Data Dimensional Data Figure 28. Unit dimensional data for indoor OABE WSHP with horizontal supply/return and Figure 29. Unit dimensional data for indoor OAGE ERV or exhaust fan (in.) WSHP with horizontal supply and no return (in.) BACK VIEW 41.250...

  • Page 28: Oake Units

    Unit Clearances, Curb Dimensions, and Dimensional Data Figure 30. Unit dimensional data for indoor OAGE Figure 31. Unit dimensional data for indoor OAGE WSHP with horizontal supply/return (no ERV WSHP with horizontal supply/return and or exhaust fan) (in.) ERV or exhaust fan (in.) BACK VIEW BACK VIEW 65.500...
  • Page 29 Unit Clearances, Curb Dimensions, and Dimensional Data Dimensional Data Figure 33. Unit dimensional data for indoor OAKE WSHP with horizontal supply/return (no Figure 32. Unit dimensional data for indoor OAKE ERV) (in.) WSHP with horizontal supply and no return (in.) BACK VIEW 49.75 5.34...

  • Page 30: Oane Units

    Unit Clearances, Curb Dimensions, and Dimensional Data Dimensional Data Figure 34. Unit dimensional data for indoor OAKE Figure 35. Unit dimensional data for indoor OANE WSHP with horizontal supply/return and WSHP with horizontal supply and no return (in.) BACK VIEW BACK VIEW 49.75 5.34...
  • Page 31 Unit Clearances, Curb Dimensions, and Dimensional Data Figure 36. Unit dimensional data for indoor OANE Figure 37. Unit dimensional data for indoor OANE WSHP with horizontal supply/return (no WSHP with horizontal supply/return and ERV) (in.) ERV (in.) BACK VIEW BACK VIEW 57.50 57.50 4.96...
  • Page 32 Unit Clearances, Curb Dimensions, and Dimensional Data OAU-SVX004D-EN...

  • Page 33: Unit Weight And Rigging

    Unit Weight and Rigging Unit Weight WARNING Table 1. Typical unit weights—units without auxiliary Heavy Objects! cabinet Failure to follow instructions below or properly lift unit Operating Weight (lb) Shipping Weight (lb) could result in unit dropping and possibly crushing Model operator/technician which could result in death or Number...
  • Page 34 Unit Weight and Rigging Table 2. Typical unit weights—units with auxiliary Table 3. Typical unit weight—units with horizontal cabinet return section—no auxiliary cabinet Operating Weight (lb) Shipping Weight (lb) Operating Weight (lb) Shipping Weight (lb) Model Model Number Number OABE036* 1657 1841 1905...

  • Page 35: Rigging

    Unit Weight and Rigging Rigging Table 4. Typical unit weights—units with horizontal return section and auxiliary cabinet Figure 38. Rigging Operating Weight (lb) Shipping Weight (lb) Model Number 4-point lift Model: OAB, OAG OABE036* 1657 1841 1905 2089 OABE048* 1674 1858 1922 2106...
  • Page 36 Unit Weight and Rigging Figure 38. Rigging (continued) 1. Remove the shipping crate from around the unit. 2. Rig the unit as shown in Figure 38, p. 35. Attach 4-point lift adequate strength lifting slings to all four lifting Model: OAK SPREADER BARS brackets in the unit base rail.
  • Page 37 Unit Weight and Rigging OAU-SVX004D-EN...

  • Page 38: Installation

    Installation duct work must be installed and connected to top of roof curb before the unit is set on curb. WARNING If a Curb Accessory Kit is not used: Hazardous Service Procedures! 1. Be sure to use flexible duct connections at the unit. Failure to follow all precautions in this manual and on the tags, stickers, and labels could result in death or 2.

  • Page 39: Horizon Water Source Heat Pump Field Connection Instructions

    Installation cover (see Figure 43 for a view of the pipe chase panel  Assemble and install the roof curb (if applicable). cover located on the floor of the cabinet section Refer to the latest edition of the curb installers guide beneath the center drain pan).

  • Page 40: Oab If Heater Air Inlet Hood And Flue Assembly Instructions For Outdoor Installations

    Installation OAB IF Heater Air Inlet Hood and Flue size and style will vary depending on the tonnage of each unit). Assembly Instructions for Outdoor Installations Figure 44. Coil connection detail Unit is shipped with the IF heater air inlet hood, flue cover, Pressure Tap (Typical) and flue stowed in the blower compartment.
  • Page 41 Installation 3. Attach the flue cover to the heater door using the Figure 48. Heater air inlet hood provided stainless steel screws as shown in Figure Figure 50. 1. Open the blower compartment and remove the flue, flue cover, wind screen, and heater air inlet hood. 2.

  • Page 42: Venting Of Furnace For Indoor Installations

    Installation Figure 52. Figure 54. Venting of Furnace for Indoor Installations All furnace modules must be vented outside of the heated space. Vents must be designed and installed in accordance with ANSI Z223.1. Beyond an equivalent length of 15 feet, 6.
  • Page 43 Installation 3. Horizontal runs must not exceed 75 percent of the vertical height of the vent pipe, up to a maximum of WARNING 10 ft (3 m). Horizontal runs should be pitched upward Proper Vent Pipe Required! 1/4 in./ft (21 mm/m) and should be supported at 3-ft (1-m) maximum intervals.
  • Page 44 Installation Figure 56. Horizontal venting—category III Input ratings Diameter pipe to use Btu/h 5 ft (1.52 m) Min. 50 ft (15.25 m) Max. 75000–149999 21980–43958 Equivalent Length 150000–400000 43960–117228 1 ft (305 mm) Min. 2 in (51 mm) Clearance Thimble with Approved The total equivalent length of vent pipe must not exceed 2 in.

  • Page 45: Main Electrical Power Requirements

    Installation Main Electrical Power Requirements Figure 57. Condensate trap installation PANEL ENCLOSURE  Verify that the power supply complies with the unit D" NPT FEMALE CONNECTOR nameplate specifications.  Inspect all control panel components; tighten any loose connections.  Connect properly sized and protected power supply wiring to a field-supplied/-installed disconnect switch and to the main power terminal block (HTB1) in the unit control panel.

  • Page 46: Filter Installation

    Installation Table 6. Chilled water pipe chase location (in.) Figure 59. OAB powered exhaust damper hood, collapsed Unit 63.84 19.50 11.00 5.00 93.93 20.64 11.00 5.00 Table 7. Chilled water connection size (MPT-in.) Unit Size MPT-in. OAK 12–30 tons OAN 30–54 tons Filter Installation Cabinet sizes OAD, OAG, OAK, and OAN ship with 2-inch permanent filters (mist eliminators) installed in the air inlet...
  • Page 47 Installation Figure 60. OAB powered exhaust damper hood, open Figure 61. OAG powered exhaust damper hood, collapsed OAG Cabinet 2. Lift the hood upward and rotate the side panels outward while holding the top up. 1. To release damper hood, remove the hex head sheet metal screw shown in DETAIL A (see Figure 61) and...

  • Page 48: Field Installed Power Wiring

    Installation Figure 62. OAG powered exhaust damper hood, open AVERTISSEMENT Câblage sur site et mise à la terre corrects nécessaires ! Le non-respect de la réglementation peut entraîner des blessures graves, voire mortelles. Il est IMPÉRATIF de confier l’ensemble du câblage sur site à un électricien qualifié.
  • Page 49 Installation Figure 64. OAG WSHP utility connections (in.) Figure 66. OAN WSHP utility connections ELECTRIC DISCONNECT SWITCH 38.345 CONDENSATE DRAIN 1" FPT 6.000 WATER CONNECTIONS 18.252 INSIDE PIPE CHASE. ROUTE THROUGH BASE OR SIDE. (SIDE REQUIRES 16.072 FIELD CUT HOLES) THROUGH BASE ELECTRIC 81.248...

  • Page 50: Main Unit Power

    Installation Main Unit Power AVERTISSEMENT Câblage sur site et mise à la terre corrects WARNING nécessaires ! Hazardous Voltage! Le non-respect de la réglementation peut entraîner des blessures graves, voire mortelles. Il est IMPÉRATIF de Failure to disconnect power before servicing could confier l’ensemble du câblage sur site à...

  • Page 51: Voltage Imbalance

    Installation Voltage Imbalance 226 - 221 100 X = 2.2% WARNING The 2.2 percent imbalance in this example exceeds the Live Electrical Components! maximum allowable imbalance of 2.0 percent. This much imbalance between phases can equal as much as a Failure to follow all electrical safety precautions when 20 percent current imbalance with a resulting increase in exposed to live electrical components could result in...

  • Page 52: Compressor Crankcase Heaters

    Installation Before initial start up, or if main power has been off for an  Observe the ABC and CBA phase indicator lights on extended period of time, compressor crankcase heater(s) the face of the sequencer. The ABC indicator light will should be operated for a minimum of 8 hours prior to glow if the phase is ABC.

  • Page 53: Control Power Transformer

    Installation Control Power Transformer NOTICE Use Copper Conductors Only! WARNING Failure to use copper conductors could result in Hazardous Voltage! equipment damage as unit terminals are not designed Failure to disconnect power before servicing could to accept other types of conductors. result in death or serious injury.

  • Page 54: Dc Conductors

    Installation DC Conductors 1. Below table lists the conductor sizing guidelines that must be followed when interconnecting the DC binary output devices and the system components utilizing a Table 9. Zone sensor module wiring DC analog input\output signal to the unit. Distance from Unit to Control Recommended Wire Size Note: Resistance in excess of 2.5 ohms per conductor...
  • Page 55 Installation OAU-SVX004D-EN...

  • Page 56: Pre-Start Check List

    8. Startup appointment with Horizon certified Trane service technician set and confirmed. Notes: • Check list must be completed and returned to Trane before startup is scheduled. • Startup must be performed by a Horizon-certified Trane technician with Tracer™ TU program. •...

  • Page 57: System Configuration And Pre-Start

    System Configuration and Pre-Start The following procedure must be completed prior to Important: This section is intended to provide performing the startup procedure in “Startup,” p. 60. This guidelines for navigation through the section describes procedures to navigate the various remote operator display screens.
  • Page 58 System Configuration and Pre-Start Table 10. Menu descriptions Screen Menu Point List Min/Inactive Default Max/Active Point? Active Alarms List of all active alarms Alarms All Alarms List of all previous alarms Custom Graphics *NOT USED* Program Control Discharge Air Control Space Control Space Control Heat Cool Mode Active Heat...
  • Page 59 System Configuration and Pre-Start Table 10. Menu descriptions (continued) Screen Menu Point List Min/Inactive Default Max/Active Point? DAT High Temp Cutout 100°F 125°F 150°F DAT Low Temp Cutout 35°F 35°F 50°F DAT Temp Cutout Time 10 min. 10 min. 25 min. Discharge Air Cooling Setpoint 55°F 55°F...

  • Page 60: Startup

    Startup Note: Refer to “Horizon™ Dedicated Outdoor Air Unit Startup Form,” p. 87 for a copy of the startup form. AVERTISSEMENT Procédures d’entretien dangereuses ! Indirect Gas-Fired Heating • Les techniciens, afin d’être protégés des éventuels Startup risques électriques, mécaniques et chimiques, DOIVENT suivre les précautions contenues dans ce manuel, sur les étiquettes et les autocollants, ainsi WARNING...

  • Page 61: Startup Procedure

    Open all manual gas valves. Turn power on at unit’s main disconnect switch. Open gas supply manual shut- off valve. Using unit display (or computer with Trane Tracer TU), proceed to System Status Display and Override all Compressor stages OFF, Disable...
  • Page 62 Startup Dehumidification, Disable Economizer Mode, Disable modulating heater startup, increase heat output ERV. If two heaters are installed, test heating with split command to 100 percent to start up the second heater. manifold first by overriding burner 2 OFF. Override High Fire and Low Fire Adjustment heating Output Command to 100.0 percent if one To adjust high fire or low fire setting, please refer to...
  • Page 63 Startup surrounding buildings or prevailing winds cause Figure 68. Flame characteristics of properly-adjusted recirculation, a flue extension may be required to natural gas systems prevent recirculation. Contact manufacturer prior to making any flue adjustments. • Reduced air delivery can also be the result of inducer fan blade slippage, dirt accumulation in the fan blade or low voltage to draft inducer motor.

  • Page 64: Safety Controls

    Startup Figure 69. OAB/OAG/OAK/OAN indirect gas-fired furnace components Ignition Inducer blower Air-proving switch Controllers Inducer motor Modulating gas valve Condensate drain Rollout (TYP. 2) switch Rollout switch High limit switch Minimum/maximum inlet pressure = 7 IN. WC/14 IN. WC (1.7 KPA/3.5 KPA) Flame for natural gas and 10 in.

  • Page 65: Maintenance

    Maintenance Cooling/Heating Season Make sure all personnel are standing clear of the unit before proceeding. The system components will start • Check the unit’s drain pans and condensate piping to when the power is applied. ensure that there are no blockages. Monthly Maintenance •...

  • Page 66: Final Process

    Maintenance cleaned. Use caution when selecting the cleaning solution _____________________________________________________ as well as the cleaning equipment. Improper selection can _____________________________________________________ result in damage to the coil and/or health hazards. Clean _____________________________________________________ the coil from the leaving air-side so that foreign material will be washed out of the coil rather than pushed further in.

  • Page 67: Performance Data

    Performance Data Table 12. OABE general data—cooling 3–5 tons high efficiency 3 Tons 4 Tons 5 Tons OABE036A OABE048A OABE060A Performance Gross Cooling Capacity, Btu (kW) 41,800 (12.25) 57,439 (16.83) 70,304 (20.60) Gross Heating Capacity, Btu (kW) 36,779 (10.78) 44,667 (13.09) 63,402 (18.58) Nominal cfm (m 500–2000 (849–3398)
  • Page 68 Performance Data Table 13. OABE general data—cooling 6–9 tons high efficiency (continued) 6 Tons 7 Tons 8 Tons 9 Tons OABE072A OABE084A OABE096A OABE108A Water Flow/Circuit, gpm (L/s) 18 (1.14) 21 (1.32) 24 (1.51) 27 (1.70) Indoor Coil Type High Performance High Performance High Performance High Performance...
  • Page 69 Performance Data Table 14. OAGE general data—cooling 10–17 tons high efficiency (continued) 10 Tons Downflow 12 Tons Downflow 15 Tons Downflow 17 Tons Downflow OAGE120 OAGE144 OAGE180 OAGE210 Number Motors 1–2 1–2 1–2 1–2 Motor HP (kW), Standard–Oversized 2.67–8 (1.96–5.88) 2.67–8 (1.96–5.88) 2.67–8 (1.96–5.88) 2.67–8 (1.96–5.88)
  • Page 70 Performance Data Table 16. OAKE general data—cooling 12–20 tons high efficiency 12 Tons Downflow 15 Tons Downflow 17 Tons Downflow 20 Tons Downflow OAKE144A OAKE180A OAKE210A OAKE240A Performance Gross Cooling Capacity, Btu (kW) 164,280 (48.15) 208,912 (61.23) 239,236 (70.11) 279,374 (81.88) Gross Heating Capacity, Btu (kW) 148,018 (43.38) 190,654 (55.88)
  • Page 71 Performance Data Table 17. OAKE general data—cooling 22–30 tons high efficiency 22 Tons Downflow 25 Tons Downflow 30 Tons Downflow OAKE264A OAKE300A OAKE360A Performance Gross Cooling Capacity, Btu (kW) 314,806 (92.26) 348,788 (102.22) 394,638 (115.66) Gross Heating Capacity, Btu (kW) 289,850 (84.95) 328,446 (96.26) 368,582 (108.02)
  • Page 72 Performance Data Table 18. OANE general data—cooling 30–40 tons high efficiency 30 Tons Downflow 35 Tons Downflow 40 Tons Downflow OANE360A OANE420A OANE480A Performance Gross Cooling Capacity, Btu (kW) 407,716 (119.49) 481,429 (141.09) 487,406 (142.84) Gross Heating Capacity, Btu (kW) 371,280 (108.81) 471,287 (138.12) 477,756 (140.02)
  • Page 73 Performance Data Table 19. OANE general data—cooling 45–54 tons high efficiency 45 Tons Downflow 50 Tons Downflow 54 Tons Downflow OANE540A OANE600A OANE648A Cooling Performance Gross Cooling Capacity, Btu (kW) 580,516 (170.13) 707,260 (207.28) 762,312 (223.41) Gross Heating Capacity, Btu (kW) 535,250 (156.87) 696,574 (204.15) 722,794 (226.48)

  • Page 74: Superheat And Refrigeration Circuit Data

    Performance Data Superheat and Refrigeration Figure 71. Refrigeration diagram: single compressor Circuit Data with reheat Figure 70. Refrigeration diagram: single compressor without reheat OAU-SVX004D-EN...
  • Page 75 Performance Data Figure 72. Refrigeration diagram: dual compressor Figure 73. Refrigeration diagram: dual compressor with without reheat reheat OAU-SVX004D-EN...
  • Page 76 Performance Data Figure 74. Refrigeration diagram: triple compressor Figure 75. Refrigeration diagram: triple compressor without reheat with reheat OAU-SVX004D-EN...
  • Page 77 Performance Data Figure 76. Refrigeration diagram: quad compressor Figure 77. Refrigeration diagram: quad compressor without reheat with reheat OAU-SVX004D-EN...
  • Page 78 Performance Data OAU-SVX004D-EN...

  • Page 79: Alarms And Troubleshooting

    Alarms and Troubleshooting Microprocessor Control 3. Utilizing “Method 1” in the RTRM “System Status Checkout Procedure”, check the following: The Main Unit Display and RTRM have the ability to • System status provide the service personnel with some unit diagnostics and system status information.
  • Page 80 Alarms and Troubleshooting Table 20. TOAU UC600 alarms (continued) Table 20. TOAU UC600 alarms Point Diagnostic Possible Cause Point Diagnostic Possible Cause Applies to 5:1 and 10:1 Gas Heaters Only VFD not operating Trips after heat command “ON” and no GV Outdoor and/or Return Air Dampers not status offer 1 minute Operating Properly...

  • Page 81: Rtrm Failure Modes

    Alarms and Troubleshooting Table 21. TOAU UC600 troubleshooting (continued) System Failure = less than 1 Vdc, approximately 0.75 Vdc Trouble Possible Cause Compressor Operation Failure High fire gas manifold pressure too high Measure the voltage between terminals J6-8 and J6-6. Supply fan speed too low Compressor Operating = approximately 32 Vdc Dirty or clogged filters...

  • Page 82: Appendix

    Appendix OAU Filter Guide Table 24. OAKE units Evaporator Table 22. OABE units Thickness MERV Height Width Evaporator 2 in. 8, 13 Thickness MERV Height Width 4 in. 2 in. 8, 13 Auxiliary Module (46XX ERV) 4 in. Return Air Auxiliary Module Thickness MERV...

  • Page 83: Field Installation Of Factory-Provided Sensors

    Appendix Field Installation of Factory- Provided Sensors Figure 78. VELSEN-0021 installation instructions OAU-SVX004D-EN...
  • Page 84 Appendix Figure 79. BAYSENS036A installation instructions OAU-SVX004D-EN...
  • Page 85 Appendix Figure 80. VELCON-0351 installation instructions OAU-SVX004D-EN...

  • Page 86: Horizon™ Dedicated Outdoor Air Unit Startup Form

    Appendix Horizon™ Dedicated Outdoor Air Unit Startup Form : __________________ Date Job Name :_____________________________________________________________________ Address :_____________________________________________________________________ _____________________________________________________________________ Serial Number: ________________________________ Tag : __________________________ Start up contractor : _____________________________________________________________ Address :_____________________________________________________________________ _____________________________________________________________________ Pre Startup Checklist Installing contractor should verify the following items. 1 .
  • Page 87 Appendix Horizon™ Dedicated Outdoor Air Unit Startup Form Supply Fan Assembly Fan 2 - Alignment Name plate amps: Actual Amps: Rotation Hrtz: Fan 2 - Alignment Name plate amps: Actual Amps: Rotation Hrtz: Energy Recover Wheel Wheel Spins freely Check Rotation FLA: Voltage Amps:...
  • Page 88 Appendix Horizon™ Dedicated Outdoor Air Unit Startup Form Water / Glycol System 1. Has the entire system been flushed and pressure checked? _____YES NO_____ 2. Has the entire system been filled with fluid? _____YES NO_____ 3. Has air been bled from the heat exchangers and piping? _____YES NO_____ 4.
  • Page 89 Appendix OAU-SVX004D-EN...
  • Page 92 Our people and our family of brands—including Club Car®, Ingersoll Rand®, Thermo King® and Trane®—work together to enhance the quality and comfort of air in homes and buildings; transport and protect food and perishables; and increase industrial productivity and efficiency. We are a global business committed to a world of sustainable progress and enduring results.

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