Trane Horizon OABD Series Installation, Operation And Maintenance Manual
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Trane Horizon OABD Series Installation, Operation And Maintenance Manual

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Installation, Operation, and Maintenance
Horizon™ Outdoor Air Unit
Horizon UC600 Controls Program Version 12.0
Models
OABD, OABE, OABF, OADG, OAGD, OAGE, OAGF, OAKD, OAKE, OAKF, OAND, OANE, OANF,
OANG
Important:
Proper completion 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.
February 2023
SAFETY WARNING
AVERTISSEMENT DE SÉCURITÉ
OAU-SVX007A-EN

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  • Page 1 Installation, Operation, and Maintenance Horizon™ Outdoor Air Unit Horizon UC600 Controls Program Version 12.0 Models OABD, OABE, OABF, OADG, OAGD, OAGE, OAGF, OAKD, OAKE, OAKF, OAND, OANE, OANF, OANG Important: Proper completion 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 Carbon (HCFCs). Not all refrigerants containing these compounds have the same potential impact to the environ- ment. Trane advocates the responsible handling of all refrig- erants-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 au travail entrepris, les techniciens s’exposent order to protect themselves from potential electrical, à...
  • Page 4 Failure to follow all proper safe refrigerant handling practices could result in death or serious injury. • All Trane personnel must follow the company’s Never solder, braze or weld on refrigerant lines or any Environmental, Health and Safety (EHS) policies...
  • Page 5 4. Immediately call your gas supplier. This document and the information in it are the property of Trane, and may not be used or reproduced in whole or in part AVERTISSEMENT without written permission. Trane reserves the right to revise this publication at any time, and to make changes to its content Risque d’explosion et gaz mortels!

  • Page 6: Table Of Contents

    Table of Contents Model Number Descriptions Airflow Monitoring ....22 ....9 Horizon Outdoor Air Unit .
  • Page 7 Indirect Fired Gas Heating Start-Up ..92 Trane® Horizon™ DOAS ....121 Start-Up Procedure ....93 Pre-Startup Checklist .
  • Page 8 Table of Contents Voltages ......121 Motor Data ......122 Compressor Data .

  • Page 9: Model Number Descriptions

    Model Number Descriptions Horizon Outdoor Air Unit Model: OAK Rev5 and OAN Digit 11 — Evaporator Type Digit 17 — Indoor Fan Wheel Rev5 No Cooling DX 4-Row 120.6 DX 4-Row Interlaced Digit 1, 2 — Unit Type DX 6-Row Interlaced 140.6 OA = Outdoor Air...
  • Page 10 5 hp – 3600 rpm 200 MBh 40 kW Thumbwheel 7.5 hp – 1800 rpm CA = Trane – Lab Space Control w/ 250 MBh 48 kW 7.5 hp – 3600 rpm BACnet (No Display) 10 hp – 1800 rpm...
  • Page 11 Model Number Descriptions ERV – Aluminum Construction 65 KAIC Electrical Rating with Bypass w/Non-Fused Disconnect ERV – Aluminum Construction 65 KAIC Electrical Rating with Frost Protection and Bypass w/Fused Disconnect 65 KAIC Non-Fused Digit 32 — ERV Size w/Convenience Outlet No ERV 65 KAIC Fused 4634...

  • Page 12: Horizon Outdoor Air Unit

    Model Number Descriptions Horizon Outdoor Air Unit Model: OADG Rev6 and Digit 11 — Indoor Coil Type Digit 17 — Heat Capacity—Primary OANG Rev6 No Indoor Coil DX 4-Row ELEC HOT WATER DX 6-Row Digit 1, 2 — Unit Type No Heat Glycol/Chilled Water Coil –...
  • Page 13 10 kW No Powered Exhaust Trane – Lab Space Control 1 hp – 1800 rpm 15 kW Trane – Lab Discharge Air Control 1 hp – 3600 rpm 20 kW Trane – Lab Multi-Zone VAV 1.5 hp – 1800 rpm...
  • Page 14 Model Number Descriptions Digit 39 — Exhaust Dampers Digit 47 — Hailguards Digit 62 — Minimum Damper Leakage No Exhaust Dampers No Hailguards Gravity Dampers Hailguards Standard Isolation Dampers Outdoor Coil Wind Blockers Class 1A Barometric Relief Dampers Digit 48 — Service Lights Digit 63, 64 —...

  • Page 15: Horizon Outdoor Air Unit

    Model Number Descriptions Horizon Outdoor Air Unit Model: OAB Rev5 and OAG Digit 13 — Compressor Digit 18 — Indoor Fan Motor (hp) Rev5 No Compressors Scroll Compressors ECM BELT DRIVE DIRECT DRIVE Digital Scroll (1 Circuit Only) Digit 1, 2 — Unit Type A = 1 kW 2 hp Digital Scroll (1...
  • Page 16 1.5 hp – 3600 rpm w/BACnet w/Display 111 kW 2 hp – 1800 rpm CC = Trane – Lab Discharge Air Control 119 kW w/BACnet (No Display) 2 hp – 3600 rpm CD = Trane – Lab Discharge Air Control Special Heater Option 3 hp –...
  • Page 17 Model Number Descriptions Digit 33 — Damper Options Digit 37 — airflow Monitoring 100% OA 2-Position Damper No Airflow Monitoring 100% OA 2-Position Damper Airflow Monitoring – IFM Piezo w/RA 2-Position Damper Ring Modulating OA and RA Dampers Airflow Monitoring – PE Piezo Ring w/Economizer Airflow Monitoring –...

  • Page 18: General Information

    General Information Overview of Manual satisfy the applicable request for ventilation, cooling, dehumidification and heating. Note: One copy of this document ships inside the control Indoor Fan Failure Input panel of each unit and is customer property. It must be retained by the unit’s maintenance personnel.

  • Page 19: Outdoor Air Temperature And Relative Humidity Sensor

    General Information Cutoff (DHCS) of 125°F for 10 minutes for gas heat or 90°F for pressure tap. This assembly will require minor field labor to electric heat, the unit will shut down and require manual restart. install. Outdoor Air Temperature and Relative Hinged Access Doors Humidity Sensor Hinged access doors with hold open brackets will be factory-...

  • Page 20: Exhaust Dampers

    General Information is energized, the NO contact is closed and the NC contact is Figure 2. Barometric relief damper with counterweight opened, thus opening the outdoor air damper, and closing the return air damper. Mixed Air Setup on 2-Position Dampers 2-Position outdoor and return air dampers can be set up for a mixed airflow using mechanical stops at any position between 0 and 90deg.

  • Page 21: Space Temperature/Humidity Sensor

    General Information Fans Figure 3. Modulating heat signal and staging for 2- stage gas heat Condenser Fans The following pictures represent the condenser fan numbering for each Horizon cabinet from the top view. The ones labelled with VFD are the fans that are on a VFD when the unit is equipped with Active Head Pressure Control, while the others are on/off.

  • Page 22: Filter Status Switches

    General Information Figure 9. Top view of OAN (rev 5) 30 to 60 tons Piezo pressure is measured with supply fan piezo pressure local, and a multiplier is applied using the supply fan wheel size to generate a supply fan airflow local. The local value is used within the program as a safety measure.

  • Page 23: Unit Inspection

    General Information Unit Inspection additional respiratory protection. Use the appropriate NIOSH approved respiration in these situations. First Aid Measures WARNING Eye Contact Fiberglass Wool! Flush eyes with water to remove dust. If symptoms persist, Product may contain fiberglass wool. Disturbing the seek medical attention.

  • Page 24: Unit Clearances, Curb Dimensions, And Dimensional Data

    Unit Clearances, Curb Dimensions, and Dimensional Data Figure 13. Typical installation clearances for OAK unit WARNING with auxiliary cabinet Combustible Materials! CLEARANCE FROM Failure to maintain proper clearance between the unit TOP OF UNIT 72" heat exchanger, vent surfaces and combustible materials could cause a fire which could result in death or serious injury or property damage.
  • Page 25 Unit Clearances, Curb Dimensions, and Dimensional Data Dimensional Data Figure 15. Typical installation clearances for OAK unit with auxiliary cabinet Figure 18. Unit dimensional data for OAK 12–30 tons, vertical supply and vertical/no return without 106.45 6'0" 7'0" 43.02 BASE TO BOTTOM 80.57 OF AIR INLET Note: Certain options require auxiliary cabinet.
  • Page 26 Unit Clearances, Curb Dimensions, and Dimensional Data Figure 20. Unit dimensional data for OAK 12–30 tons, Figure 21. Unit dimensional data for OAK 12–30 tons, horizontal supply and vertical/no return (in.) horizontal supply and horizontal return with optional exhaust fan (in.) TOP VIEW TOP VIEW 106.21...

  • Page 27: Oan Units

    Unit Clearances, Curb Dimensions, and Dimensional Data OAN Units Figure 22. Unit dimensional data for OAK 12–30 tons, horizontal supply and horizontal return with Unit Clearances ERV (in.) Figure 23. Typical installation clearances for OAN unit TOP VIEW 106.21 39.89 54.38 Clearance from top of unit 72”...

  • Page 28: Curb Dimensions

    Unit Clearances, Curb Dimensions, and Dimensional Data Figure 24. Typical installation clearances for OAN unit Figure 26. Typical installation clearances for OAN unit with auxiliary cabinet with auxiliary cabinet Clearance from top of unit 72” Clearance 48” Clearance 48” 6'0" 7'0"...

  • Page 29: Dimensional Data

    Unit Clearances, Curb Dimensions, and Dimensional Data Dimensional Data Figure 31. Unit dimensional data for OAN 30–54 tons, horizontal supply and vertical/no return (in.) Figure 29. Unit dimensional data for OAN 30–54 tons, vertical supply and vertical/no return without TOP VIEW 144.17 144.17 2.88...
  • Page 30 Unit Clearances, Curb Dimensions, and Dimensional Data Figure 32. Unit dimensional data for OAN 30–54 tons, Figure 33. Unit dimensional data for OAN 30–54 tons, horizontal supply and horizontal return with horizontal supply and horizontal return with optional exhaust fan (in.) ERV (in.) TOP VIEW TOP VIEW...

  • Page 31: Oab Units

    Unit Clearances, Curb Dimensions, and Dimensional Data OAB Units Figure 35. Typical installation clearances for OAB unit Unit Clearances with auxiliary cabinet Figure 34. Typical installation clearances for OAB unit 6'-0" 7'-0" END TO END 4'-0" 3'-0" 4'-0" 3'-0" Note: Certain options require auxiliary cabinet. Refer to project-specific unit submittals.
  • Page 32 Unit Clearances, Curb Dimensions, and Dimensional Data Dimensional Data Figure 37. Unit curb data for OAB 3–9 tons with auxiliary cabinet Figure 38. Unit dimensional data for OAB 3–9 tons (in.) Note: Certain options require auxiliary cabinet. Refer to project-specific unit submittals. Note: Sound attenuation package will add 17.76 in.

  • Page 33: Indirect-Fired Oag Units

    Unit Clearances, Curb Dimensions, and Dimensional Data Indirect-Fired OAG Units Figure 39. Unit dimensional data for OAB 3–9 tons with auxiliary cabinet (in.) Unit Clearances Figure 40. Typical installation clearances for indirect- fired OAG unit 84" 72" 36" Notes: • Certain options require auxiliary cabinet.
  • Page 34 Unit Clearances, Curb Dimensions, and Dimensional Data Figure 41. Typical installation clearances for indirect- Figure 43. Unit curb data for indirect-fired OAG with fired OAG unit with auxiliary cabinet auxiliary cabinet (in.) " 70 2 " " " " 117 2 "...
  • Page 35 Unit Clearances, Curb Dimensions, and Dimensional Data Note: Sound attenuation package will add 10.79 in. to the height of the condenser fan section. Refer to project- specific unit submittals. Figure 45. Unit dimensional data for indirect-fired OAG with auxiliary cabinet FRONT VIEW 77.524 74.417...

  • Page 36: Outdoor Wshp Units

    Unit Clearances, Curb Dimensions, and Dimensional Data Outdoor WSHP Units OABE Units Figure 47. Typical installation clearances for OABE unit with auxiliary cabinet Unit Clearances Figure 46. Typical installation clearances for OABE unit 3'-0" 3'-0" 4'-0" 9'-6 16 " 6'-0" END TO END 3'-0"...
  • Page 37 Unit Clearances, Curb Dimensions, and Dimensional Data Curb Dimensions Dimensional Data Figure 48. Unit curb data for OABE 3–9 tons Figure 50. Unit dimensional data for OABE 3–9 tons (in.) " 2 " GUTTER B DETAIL 10 " 4 " 27 8 "...

  • Page 38: Indirect-Fired Oage Units

    Unit Clearances, Curb Dimensions, and Dimensional Data Indirect-Fired OAGE Units Figure 51. Unit dimensional data for OABE 3–9 tons with auxiliary cabinet (in.) Unit Clearances Figure 52. Typical installation clearances for indirect- fired OAGE unit (in.) Note: Certain options require auxiliary cabinet. Refer to project-specific unit submittals.
  • Page 39 Unit Clearances, Curb Dimensions, and Dimensional Data Curb Dimensions Figure 53. Typical installation clearances for indirect- fired OAGE unit with auxiliary cabinet (in.) Figure 54. Unit curb data for indirect-fired OAGE (in.)   '(7$,/ '  3,3( &+$6( *877(5 6&$/(       ...
  • Page 40 Unit Clearances, Curb Dimensions, and Dimensional Data Dimensional Data Figure 57. Unit dimensional data for indirect-fired OAGE with auxiliary cabinet (in.) Figure 56. 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 41: Oake Units

    Unit Clearances, Curb Dimensions, and Dimensional Data OAKE Units Figure 59. Typical installation clearances for OAKE unit Unit Clearances with auxiliary cabinet (in.) Figure 58. Typical installation clearances for OAKE unit (in.) Note: Certain options require auxiliary cabinet. Refer to project-specific unit submittals.
  • Page 42 Unit Clearances, Curb Dimensions, and Dimensional Data Dimensional Data Figure 61. Unit curb data for OAKE 12–30 tons with auxiliary cabinet (in.) Figure 62. Unit dimensional data for OAKE 12–30 tons (in.) GUTTER A DETAIL GUTTER B DETAIL 2½ FRONT VIEW 6½...

  • Page 43: Oane Units

    Unit Clearances, Curb Dimensions, and Dimensional Data OANE Units Figure 63. Unit dimensional data for OAKE 12–30 tons with auxiliary cabinet (in.) Unit Clearances Figure 64. Typical installation clearances for OANE unit FRONT VIEW 86.394 (in.) 60.467 83.565 67.943 81.536 26.046 5.964 60.000...

  • Page 44: Curb Dimensions

    Unit Clearances, Curb Dimensions, and Dimensional Data Curb Dimensions Figure 65. Typical installation clearances for OANE unit with auxiliary cabinet (in.) Figure 66. Unit curb data for OANE 30–54 tons (in.) Gutter Details 2½ 6½ 2½ 22½ 22½ 51½ 1½ 22¼...

  • Page 45: Dimensional Data

    Unit Clearances, Curb Dimensions, and Dimensional Data Dimensional Data Figure 68. Unit dimensional data for OANE 30–54 tons Figure 69. 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...

  • Page 46: Indoor Wshp Units

    Unit Clearances, Curb Dimensions, and Dimensional Data Indoor WSHP Units OABE Units Figure 71. Unit dimensional data for indoor OABE WSHP with horizontal supply/return (no ERV Note: Indoor units have the same clearances as outdoor or exhaust fan) (in.) units. Refer to (outdoor OABE unit clearances). Dimensional Data BACK VIEW Figure 70.

  • Page 47: Oage Units

    Unit Clearances, Curb Dimensions, and Dimensional Data OAGE Units Figure 72. Unit dimensional data for indoor OABE WSHP with horizontal supply/return and ERV Note: Indoor units have the same clearances as outdoor or exhaust fan (in.) units. Refer to (outdoor OAGE unit clearances). Dimensional Data BACK VIEW 41.250...
  • Page 48 Unit Clearances, Curb Dimensions, and Dimensional Data Figure 74. Unit dimensional data for indoor OAGE Figure 75. Unit dimensional data for indoor OAGE WSHP with horizontal supply/return (no ERV WSHP with horizontal supply/return and ERV or exhaust fan) (in.) or exhaust fan (in.) BACK VIEW BACK VIEW 65.500...

  • Page 49: Oake Units

    Unit Clearances, Curb Dimensions, and Dimensional Data OAKE Units Figure 77. Unit dimensional data for indoor OAKE WSHP with horizontal supply/return (no ERV) Note: Indoor units have the same clearances as outdoor (in.) units. Refer to (outdoor OAKE unit clearances). Dimensional Data BACK VIEW 49.75...

  • Page 50: Oane Units

    Unit Clearances, Curb Dimensions, and Dimensional Data OANE Units Figure 78. Unit dimensional data for indoor OAKE WSHP with horizontal supply/return and ERV Note: Indoor units have the same clearances as outdoor units. Refer to (outdoor OANE unit clearances). BACK VIEW Dimensional Data 49.75 5.34...
  • Page 51 Unit Clearances, Curb Dimensions, and Dimensional Data Figure 80. Unit dimensional data for indoor OANE Figure 81. Unit dimensional data for indoor OANE WSHP with horizontal supply/return (no ERV) WSHP with horizontal supply/return and ERV (in.) (in.) BACK VIEW BACK VIEW 57.50 57.50 4.96...

  • Page 52: Oad Units

    Unit Clearances, Curb Dimensions, and Dimensional Data OAD Units Figure 83. Installation clearances for unit with powered exhaust but no ERV, in. (cm) Unit Clearances Figure 82. Installation clearances for units with no powered exhaust or ERV, in. (cm) 36.00 [91.4] 36.00 [91.4]...

  • Page 53: Curb Dimensions

    Unit Clearances, Curb Dimensions, and Dimensional Data Curb Dimensions Figure 86. Unit curb data for OAD cabinet with no powered exhaust or ERV, in. (cm) (14.0) (12.7) (33.0) 33.5 (142.2) (261.6) (85.1) (116.8) 26.5 (67.3) 24.5 (12.7) (62.2) 1.75 (4.4) TOP FLANGE Figure 87.

  • Page 54: Dimensional Data

    Unit Clearances, Curb Dimensions, and Dimensional Data Dimensional Data Figure 89. Unit dimensional data for OAD unit with no powered exhaust or ERV, in. (cm) 146.888 (373.1) 95.281 (242) 110.437 36.451 31.994 (280.5) (92.6) (81.3) 2.689 (6.8) 27.060 (68.7) HEAT ONLY 68.594 (174.2)
  • Page 55 Unit Clearances, Curb Dimensions, and Dimensional Data Figure 90. Unit dimensional data for OAD cabinet with powered exhaust but no ERV, in. (cm) 146.888 (373.1) 63.437 (161.1) 2.689 36.451 110.437 31.994 (6.8) (280.5) (92.6) (81.3) HEAT ONLY 27.060 (68.7) 68.594 (174.2) 19.500 P.E.
  • Page 56 Unit Clearances, Curb Dimensions, and Dimensional Data Figure 91. Unit dimensional data for OAD cabinet with ERV, in. (cm) 213.046 95.281 (541.1) (242.0) 31.994 176.500 36.546 2.689 (81.3) (448.3) (92.8) (6.8) 87.925 HEAT 27.060 (223.3) (68.7) ONLY 68.594 (174.2) 31.500 23.500 (80.0) 38.845...

  • Page 57: Oan Units

    Unit Clearances, Curb Dimensions, and Dimensional Data OAN Units Figure 95. Unit to unit clearance, in. (cm) Unit Clearances Figure 92. Installation clearances for units with no powered exhaust or ERV, in. (cm) 84.000 96.000 [213.36] [243.84] 36.0 [91.4] Curb Dimensions 54.0 [137.2] 96.0...
  • Page 58 Unit Clearances, Curb Dimensions, and Dimensional Data Figure 98. Unit curb data for OAN cabinet with ERV, in. (cm) 7.25 76.50 73.50 SUPPLY 1.75 1.00 7.25 20.00 1X4 WOOD 98.50 76.15 43.00 33.85 NAILER 11.00 10.50 2.00 293.00 91.00 14.00 14.00 14.00 91.50...

  • Page 59: Dimensional Data

    Unit Clearances, Curb Dimensions, and Dimensional Data Dimensional Data Figure 99. Unit dimensional data for OAN unit with no powered exhaust or ERV, in. (cm) 216.325 (549.5) 33.952 182.372 109.194 (86.2) (463.2) (277.4) 35.248 (89.5) 36.109 107.518 (273.1) (91.7) 10.514 32.217 (26.7) 35.410...
  • Page 60 Unit Clearances, Curb Dimensions, and Dimensional Data Figure 100. Unit dimensional data for OAN cabinet with powered exhaust but no ERV, in. (cm) 278.332 (707) 33.959 244.374 109.194 7.013 (86.3) (620.7) (277.4) (17.8) 36.110 (91.7) 107.518 (273.1) 63.597 40.000 10.514 32.217 (161.5) (101.6)
  • Page 61 Unit Clearances, Curb Dimensions, and Dimensional Data Figure 101. Unit dimensional data for OAN cabinet with ERV, in. (cm) 334.332 (849.2) 109.194 (277.4) 33.959 300.372 7.013 (86.3) (762.9) (17.8) 36.110 (91.7) 107.518 (273.1) 63.597 40.000 10.514 32.217 (161.5) (101.6) (26.7) (81.8) 2.000 (5.1)

  • Page 62: Unit Weight And Rigging

    Unit Weight and Rigging WARNING WARNING Heavy Objects! Improper Unit Lift! Failure to follow instructions below or properly lift unit Failure to properly lift unit could result in unit dropping could result in unit dropping and possibly crushing and possibly crushing operator/technician which could operator/technician which could result in death or result in death or serious injury, and equipment or serious injury, and equipment or property-only damage.
  • Page 63 Unit Weight and Rigging Table 1. Typical unit weight, center of gravity, and corner weights (percentage of total weight) - air cooled DX units without powered exhaust or ERV (continued) Weight (lb) Center-of-gravity (in.) Corner weight (% of total weight) Length Width Corner A...

  • Page 64: Corner Weight

    Unit Weight and Rigging Table 2. Typical unit weight, center of gravity, and corner weights (percentage of total weight) - air cooled DX units with powered exhaust but without ERV (continued) Weight (lb) Center-of-gravity (in.) Corner weight (% of total weight) Length Width Corner A...
  • Page 65 Unit Weight and Rigging Table 3. Typical unit weight, center of gravity, and corner weights (percentage of total weight) - air cooled DX units with powered exhaust and ERV (continued) Weight (lb) Center-of-gravity (in.) Corner weight (% of total weight) Length Width Corner A...

  • Page 66: Corner Weight

    Unit Weight and Rigging Corner Weight Rigging Figure 102. Cabinet corners Figure 104. Rigging and center-of-gravity data 4-point lift OAD, OAK and OAN cabinets (top view) SPREADER BARS Intake hood LIFTING POINTS (4 LOCATIONS) Condenser section Figure 103. Cabinet corners LENGTH WIDTH OAB, OAG and OAN Cabinets - top view...

  • Page 67: Rigging

    Unit Weight and Rigging Rigging Figure 104. Rigging and center-of-gravity data 8-point lift, Figure 105. Rigging and center-of-gravity data horizontal return with SPREADER BARS 4-point lift energy wheel Model: OAB LIFTING POINTS (8 LOCATIONS) DETAIL A SCALE 1 : 12 LENGTH WIDTH Before proceeding, refer to tables in Unit Weight section for...

  • Page 68: Unit Weight

    Unit Weight and Rigging Unit Weight Figure 105. Rigging and center-of-gravity data 4-point lift Table 4. Typical unit weights—units without auxiliary Model: OAG cabinet SPREADER BARS Operating Weight (lb) Shipping Weight (lb) Model Number OABE036* 1172 1356 1420 1604 OABE048* 1189 1373 1437...
  • Page 69 Unit Weight and Rigging Table 5. Typical unit weights—units with auxiliary Table 6. 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 70: Rigging

    Unit Weight and Rigging Rigging Table 7. Typical unit weights—units with horizontal return section and auxiliary cabinet Figure 106. Rigging Operating Weight (lb) Shipping Weight (lb) Model 4-point lift Number Model: OAB, OAG OABE036* 1657 1841 1905 2089 OABE048* 1674 1858 1922 2106...
  • Page 71 Unit Weight and Rigging Figure 106. Rigging (continued) Figure 106. Rigging (continued) 4-point lift NOTE: TO PREVENT DAMAGE AND/OR INJURY, ANY FIELD-INSTALLED PIPE CHASE ON A CHILLED WATER UNIT MUST NOT BE INSTALLED UNTIL AFTER THE UNIT Model: OAK HAS BEEN LIFTED INTO PLACE. SPREADER BARS and OAN SPREADER BARS...

  • Page 72: Rigging

    Unit Weight and Rigging Before proceeding, refer to tables in Unit Weight section for Figure 109. Four-point lift (OAD cabinet with exhaust fan typical unit operating weights and Figure 106, p. 70 for rigging and no ERV) drawing. 1. Remove the shipping crate from around the unit. 2.
  • Page 73 Unit Weight and Rigging Figure 111. Eight-point lift (OAN cabinet with no exhaust Figure 113. Ten-point lift (OAN cabinet with ERV section) fan or ERV) SPREADER BARS SPREADER BARS DETAIL A DETAIL C SCREW PIN SHACKLE DETAIL C 10 LOCATIONS SCREW PIN SHACKLE 8 LOCATIONS DETAIL A...

  • Page 74: Installation

    Installation must be installed and connected to top of roof curb WARNING before the unit is set on curb. 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 75: General Unit Requirements

    Installation installation. An incorrectly-designed and -installed P-Trap can Figure 115. Extreme transition in duct work restrict condensate flow or cause water in the condensate drain pan to “spit” or “geyser,” which may cause condensate overflow. Carefully install and trap the drain pan to ensure adequate condensate removal under all conditions.

  • Page 76: Main Electrical Power Requirements

    Installation Main Electrical Power Requirements Chilled Water Connection Size and Location Verify that the power supply complies with the unit  Figure 118. OAB and OAG chilled water cooling pipe- nameplate specifications. chase connections Inspect all control panel components; tighten any loose ...

  • Page 77: Filter Installation

    Installation Table 9. Chilled water pipe chase location (in.) Figure 120. Powered exhaust damper hood, collapsed Unit 61.25 12.00 10.00 3.00 3.000 79.75 12.50 10.00 3.00 4.125 63.84 19.50 11.00 5.00 OAND 93.93 20.64 11.00 5.00 64.25 30.00 18.00 3.50 OANG 92.64 30.00...

  • Page 78: Field Installed Power Wiring

    Installation Figure 121. Powered exhaust damper hood, open ATTENTION Câblage et Mise à la Terre Appropriés Champs Obligatoires! Le non-respect du code pourrait entraîner la mort ou grave blessure. Tout le câblage sur le terrain DOIT être effectué par des personnes qualifiées personnel. Terrain mal installé...

  • Page 79: Horizon Water Source Heat Pump Field Connection Instructions

    Installation Verify that the power supply available is compatible with the Figure 125. Rear isometric view (doors hidden for unit’s nameplate ratings. The available supply power must be clarity) within 10 percent of the rated voltage stamped on the nameplate. Use only copper conductors to connect the power supply to the unit.

  • Page 80: Oab If Heater Air Inlet Hood And Flue Assembly Instructions For Outdoor Installations

    Installation OAB IF Heater Air Inlet Hood and Flue Figure 127. Coil connection detail Assembly Instructions for Outdoor Installations Pressure Tap (Typical) Fluid Flow Proving Switch (Typical) Unit is shipped with the IF heater air inlet hood, flue cover, and Coil flue stowed in the blower compartment.
  • Page 81 Installation 3. Attach the flue cover to the heater door using the provided Figure 131. Heater air inlet hood stainless steel screws as shown in Figure 133. Figure 133. Heater door with flue cover attached 1. Open the blower compartment and remove the flue, flue cover, wind screen, and heater air inlet hood.

  • Page 82: Venting Of Furnace For Indoor Installations

    Installation Figure 135. Fully assembled heater door Figure 137. OAB with fully assembled heater door 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.
  • Page 83 Installation Horizontal runs should be pitched upward WARNING 1/4 in./ft (21 mm/m) and should be supported at 3-ft (1-m) maximum intervals. Proper Vent Pipe Required! 4. Design vent pipe runs to minimize the use of elbows. Each Failure to follow instructions could result in death, 90°...

  • Page 84: Hot Water Connection Size And Location

    Installation Hot Water Connection Size and Location All vent pipe joints must be sealed to prevent leakage. Follow the instructions provided with the approved venting materials. Vent pipe shall be sized as follows: Figure 140. OAD water inlet and outlet, in. (cm) Input ratings Diameter pipe to use Btu/h...

  • Page 85: Main Unit Power

    Installation Main Unit Power The electrical service must be protected from over current and short circuit conditions in accordance with NEC requirements. Protection devices must be sized according to the electrical data on the nameplate. WARNING 1. Complete the unit’s power wiring connections onto either; Hazardous Voltage! the main terminal block HTB1 inside the unit control panel, Failure to disconnect power before servicing could...

  • Page 86: Electrical Phasing (Three-Phase Motors)

    Installation agencies to correct the voltage problem before operating this AVERTISSEMENT equipment. Composants électriques sous tension! Electrical Phasing (Three-Phase Motors) Le non-respect de toutes les consignes de sécurité lors de la manipulation de composants électriques sous WARNING tension peut entraîner des blessures graves, voire mortelles.

  • Page 87: Compressor Crankcase Heaters

    Installation Compressor Crankcase Heaters The Status LED located on the Main Unit Display and the Liteport LED located on the RTRM module is turned “On” within one second of power-up if internal operation is okay. WARNING Field-Installed Control Wiring Live Electrical Components! Failure to follow all electrical safety precautions when WARNING exposed to live electrical components could result in...

  • Page 88: Controls Using 24 Vac

    Installation Note: Resistance in excess of 3 ohms per conductor may AVERTISSEMENT cause component failure due to insufficient AC voltage supply. Risque d’électrocution! 3. Be sure to check all loads and conductors for grounds, Le non-respect de cette consigne peut entraîner des shorts, and mis-wiring.

  • Page 89: Dc Conductors

    Installation DC Conductors Table 13. Zone sensor module wiring Distance from Unit to Control Recommended Wire Size 000–150 feet 22 gauge 0–45.7 m 0.33 mm 151–240 feet 20 gauge 46–73.1 m 0.50 mm 241–385 feet 18 gauge 73.5–117.3 m 0.75 mm 386–610 feet 16 gauge 117.7–185.9 m...

  • Page 90: Pre-Start Up

    Pre-Start Up Start-Up 1. Perform test and balance before start up (if possible). 2. Set up date and time for unit, helps with diagnosis when looking at alarms and data logs. 3. Check points of interest sheet and confirm in/out of service points.
  • Page 91 Pre-Start Up 4. Variable speed compressor. a. Override compressor 1 ON. b. Override circuit 1 to 0%. c. Override HGRH to 100%. d. Maintain head pressure 400 psi. e. Record electrical data, refrigerant pressures, saturated temperature and line temperature on horizon. Start-Up sheet (available at the end of this document).

  • Page 92: Start-Up

    Start-Up Note: Refer to “Start-Up Form,” p. 121 for a copy of the start- AVERTISSEMENT up form. Procédures d’entretien dangereuses! Indirect Fired Gas Heating Start- • Les techniciens, afin d’être protégés des éventuels risques électriques, mécaniques et chimiques, DOIVENT suivre les précautions contenues dans ce manuel, sur les étiquettes et les autocollants, ainsi WARNING que les instructions suivantes : Sauf indication...

  • Page 93: Start-Up Procedure

    Open gas supply manual shut-off valve. Check to ensure the gas pressure supplied to the unit is using unit display (or computer with Trane Tracer TU), within the pressure requirement listed on the nameplate. proceed to system status display and override all...
  • Page 94 Start-Up modulating sections, the outlet gas pressure from main/ Pressure Settings regulator valve into the modulating valve is 5-in. WC. High Fire (in.) Main On-Off valves in 1/2-in. gas line require 3/32-in. Allen wrench to adjust outlet gas pressure. Valves in Figure 143.

  • Page 95: Safety Controls

    Start-Up recirculation into combustion air supply. If surrounding Flame current is the current which passes through the buildings or prevailing winds cause recirculation, a flue flame from the sensor to ground. A flame signal of 0.5 to extension may be required to prevent recirculation. 1.0 microamp (A) is marginal.

  • Page 96: Maintenance

    Maintenance Make sure all personnel are standing clear of the unit before Periodic checks and maintenance procedures must be proceeding. The system components will start when the power performed on the smoke detector to insure that it will function is applied. properly.

  • Page 97: Condenser Coil Cleaning

    Maintenance • Inspect both the main unit control panel and heat section 1. Remove enough panels from the unit to gain access to the control box for loose electrical components and terminal coil. connections, as well as damaged wire insulation. Make 2.

  • Page 98: Final Process

    Maintenance Final Process For future reference, you may find it helpful to record the unit (3) Wiring Diagram Numbers (from unit control panel) data requested below in the blanks provided. — schematic(s) (1) Complete Unit Model Number: ________________________________________________ ________________________________________________ ________________________________________________ ________________________________________________ ________________________________________________ ________________________________________________...

  • Page 99: 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 provide • System status the service personnel with some unit diagnostics and system •...

  • Page 100: Rtrm Failure Modes

    Alarms and Troubleshooting RTRM Failure Modes “Microprocessor Control,” p. 99 for the recommended troubleshooting procedure. Failure WARNING CLP1 has opened during the 3 minute minimum “on time” Live Electrical Components! during four consecutive compressor starts, check CLP1 by Failure to follow all electrical safety precautions when testing voltage between the J1-8 and J3-2 terminals on the exposed to live electrical components could result in RTRM and ground.
  • Page 101 Alarms and Troubleshooting Table 15. LED flash code keys for heat module UTEC 1016-xxx Ignition Board (continued) Troubleshooting Guide for UTEC 1016-xxx Ignition Board LED Code System Fault Description Action Ignition/flame sense failure. 1. Verify gas supply is available. 2. Verify gas safety valve is working correctly. Ignition locked out from too many 3 Flashes Lockout...
  • Page 102 Alarms and Troubleshooting Table 16. LED flash code keys for two stage heat module UTEC 1171-63 Ignition Board (continued) Troubleshooting Guide for UTEC 1171-63 Two Stage Board LED Code System Fault Description Action Lockout from too many flame losses. 1. Check flame sensor ceramic is not cracked; check flame rod for being coated with debris and oil.
  • Page 103 5. When the desired selection has been made, press OK. Should replacing the TR150 VFD become necessary, the replacement is not configured with all of Trane's operating parameters. The TR150 VFD must be programmed before attempting to operate the unit.
  • Page 104 Alarms and Troubleshooting the alarm relay contacts closed until the reset conditions have Table 19. Mitsubishi VFD programming parameters been met or 24VAC power has been cycled OFF and ON. All 575V flash codes except code 6 and 8 result in the compressor contactor, unloader solenoid and vapor injection solenoid Parameter Setting...
  • Page 105 Alarms and Troubleshooting The variable speed compressor drive parameter locations consist of a two-digit number (menu location) and a three-digit number (parameter location) that are setup from the factory based on the unit nameplate and values from Table 21 Table 22 for ZPV066 compressors.

  • Page 106: Appendix

    Appendix OAU Filter Guide Table 25. OAB units Evaporator Table 23. OAK units Thickness MERV Height Width Evaporator 2 in. 8, 13 Thickness MERV Height Width 4 in. Auxiliary Module 2 in. 8, 13 4 in. Return Air Auxiliary Module (46XX ERV) Thickness MERV Height...
  • Page 107 Appendix Table 27. OAD units Evaporator Thickness MERV Height Width 2 in.(5.1 cm) 24 in (63.5 cm) 18 in.(45.7 cm) 4 in.(10.2 cm) 24 in (63.5 cm) 18 in.(45.7 cm) ERV Module Return Air Thickness MERV Height Width 2 in.(5.1 cm) 20 in.(50.8 cm) 20 in.(50.8 cm) Outside Air...

  • Page 108: Field Installation Of Factory-Provided Sensors

    Appendix Field Installation of Factory-Provided Sensors Figure 149. VELSEN-0021 installation instructions OAU-SVX007A-EN...
  • Page 109 Appendix Figure 150. BAYSENS036A installation instructions OAU-SVX007A-EN...
  • Page 110 Appendix Figure 151. Supply duct static pressure transducer (SDPC) INSTALLATION INSTRUCTIONS FOR (BAPI) OR (BELIMO) SUPPLY DUCT STATIC PRESSURE TRANSDUCER (SDPC) GENERAL: SDPC IS USED TO CONTROL SUPPLY FAN SPEED BASED ON STATIC PRESSURE. DEFAULT FOR SDPC IS 0-2" WC TO 0-10VDC.
  • Page 111 Appendix Figure 152. Return duct/space pressure transducer (RDSPC) RETURN DUCT/SPACE PRESSURE TRANSDUCER (SR DPC) GENERAL: RDSPC IS USED TO CONTROL EXHAUST FAN SPEED BASED ON STATIC PRESSURE. DEFAULT FOR RDSPC IS 0-2" WC TO LINES 94 ON UNIT WIRING DIAGRAM 0-10VDC.
  • Page 112 Appendix Figure 153. Discharge air temperature sensor (DTC) INSTALLATION INSTRUCTIONS FOR DISCHARGE AIR TEMPERATURE SENSOR (DTC) THE DISCHARGE AIR TEMPERATURE SENSOR IS REQUIRED FOR UNIT OPERATION. DISCHARGE AIR SENSOR MUST BE INSTALLED AT LEAST 4 FT DOWN DUCT ON UNITS ON UNITS WITHOUT ELECTRIC HEAT, AND INSTALLED AFTER A TRANSITION ON UNITS WITH ELECTRIC HEAT.
  • Page 113 Appendix Figure 154. Space temperature/humidity sensor (SPTC/SPHC) INSTALLATION INSTRUCTIONS FOR SPACE TEMPERATURE/HUMIDITY SENSOR (SPTC/SPHC) GENERAL: SPTC AND SPHC ARE BOTH REQUIRED FOR CONTROLLING TO SPACE CONDITIONS. SPTC IS A 10K OHM TYPE II THERMISTOR, SPHC IS 4-20mA TO 0-100%. INSTALLATION: INSTALL THE SENSOR IN THE SPACE ACCORDING TO IT'S INSTRUCTION MANUAL.

  • Page 114: Sequence Of Operation V12.0

    Sequence of Operation v12.0 Description of Program Control airflow monitoring system. The airflow is factory set but can be adjusted in the field above the minimum airflow setpoints. Each Horizon unit has four available control sequences: Space With constant volume operation, the supply fan speed Control, Discharge Air Control command is adjusted to maintain the supply fan airflow local to Occupied Control...

  • Page 115: Ventilation Mode

    Sequence of Operation v12.0 Discharge Air Control humidity sensors for determining economizer mode. Before allowing economizer mode, unit must be in cooling or Ventilation mode is enabled when the outdoor air temperature dehumidification mode. economizer mode is enabled is between the high and low ventilation setpoints active (adj.). whenever the outdoor air enthalpy falls below the return air During ventilation mode, all forms of heating, cooling, and enthalpy (1.5 btu/lb.
  • Page 116 Sequence of Operation v12.0 dewpoint calculated enable setpoint but is limited to not rise additional reheat. If the reheat boost is still not able to meet the above the discharge air temperature setpoint active. discharge air temperature setpoint and the space becomes Discharge air temperature setpoint active is reset by overcooled for an extended period, dehumidification mode will comparing the space temperature to the space temperature...

  • Page 117: Heating And Cooling Mode

    Sequence of Operation v12.0 gas reheat (if installed) controls to the discharge air reaches 100% capacity (or disabled under some other temperature setpoint active. function), the next stage of heating (if available) is engaged, and the heat pump capacity remains locked at 100%. Multi Zone VAV with Outdoor Air Damper Primary Heat Dehumidification mode is enabled when the outdoor air...

  • Page 118: Energy Recovery Wheel (Erv)

    Sequence of Operation v12.0 After completing the exhaust fan startup sequence, the If the unit is equipped with an electric pre-heater, the heater is exhaust fan will control to a constant airflow based on the first used as the frost prevention method before using the exhaust airflow setpoint (preset from the factory).

  • Page 119: Heat Pump Operation

    Sequence of Operation v12.0 Hot Gas Reheat Operation with Standard Heat Pump Operation Scroll Compressors On heat pumps, the reversing valve's default (de-energized) Units equipped with only standard scroll compressors (not state is in the heating position. On initial startup, if there's a digital scroll or variable speed) will enable the hot gas reheat cooling demand, the reversing valve will switch into the cooling during cooling mode to provide precise temperature control...

  • Page 120: Split/Dual Exhaust And Return Air Paths

    Sequence of Operation v12.0 Defrost mode for the outdoor coil occurs whenever the temperature difference between the outdoor air temperature and the saturated temperature rises above a pre-determined point that indicates heavy frost accumulation has occurred. This setpoint varies based on a variety of factors but is generally around a 25°...

  • Page 121: Start-Up Form

    Start-Up Form ® Trane Horizon™ DOAS Job Name Unit Serial Number Unit Tag Technician Name   Horizon Tech Training Completed Date Completed: Startup Date To get a digital copy of this form, please email horizonstartup@kccmfg.com. For further questions please contact the factory at (502) 493-5757 or (800) 382-2872.

  • Page 122: Motor Data

    Start-Up Form Motor Data Rated HP/kW Rated FLA Running FLA Motor Model Number Supply Fan 1 Supply Fan 2 Exhaust Fan 1 Exhaust Fan 2 Condenser Fan 1 Condenser Fan 2 Condenser Fan 3 Condenser Fan 4 Condenser Fan 5 Condenser Fan 6 Energy Wheel Compressor Data...

  • Page 123: Refrigeration Startup

    Start-Up Form Refrigeration Startup Test Procedures 7. Take measurements under “Cooling” once the system has settled. Important: Cooling startup can only be completed if the 8. If the first circuit has a VFD on compressor 1 (variable outdoor air temperature is 65-105°F. If outdoor speed compressor), repeat the measurements with the air temperature is below 65°F, a bump test can variable speed signal at 0% and hot gas reheat at 100%.

  • Page 124: Indirect Fired Gas Heat Start-Up

    Start-Up Form Indirect Fired Gas Heat Start-Up Furnace Data Gas heat startup can be completed only if the outdoor air temperature is below 90°F. Serial Number Model Number Furnace 1 Furnace 2 Furnace 3 Gas Pressure Settings Measured Pressure Natural Gas Settings Propane Settings Incoming to Unit 7 –...

  • Page 125: Direct Fired Gas Heat Start-Up

    Start-Up Form Direct Fired Gas heat Start-up 1. Confirm unit airflow by measuring and recording the burner pressure drop. See table below. Burner Pressure Drop in. OAT° F OAT° F Burner Pressure Drop in. wc .720 .643 .712 .637 .705 .631 .697 .625...

  • Page 126: Final Notes

    Start-Up Form Final Notes Is there something missing or do you have recommendations on improvements? Note here if the outdoor air temperature is too low for cooling testing. Submit completed form to horizonstartup@kccmfg.com Include serial number and job name in subject of email. OAU-SVX007A-EN...

  • Page 127: Limited Warranty 1-Year Manufacturer Parts Warranty

    Limited Warranty 1-year Manufacturer Parts purchaser uses the product for other than personal, family or household purposes. Warranty Horizon Models This warranty is extended to the original purchaser and to any succeeding owner of the real property to which the Horizon unit is originally affixed and applies to products purchased and retained for use within the U.S.A.
  • Page 128 For more information, please visit trane.com or tranetechnologies.com. Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

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