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Trane IntelliPak 1 Series Installation, Operation And Maintenance Manual
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Trane IntelliPak 1 Series Installation, Operation And Maintenance Manual

Trane IntelliPak 1 Series Installation, Operation And Maintenance Manual

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Installation, Operation, and Maintenance
IntelliPak™ 1 with Symbio
Commercial Packaged Rooftop Air Conditioners with
VAV or SZVAV Controls and eFlex™/eDrive™
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.
May 2025
SAFETY WARNING
RT-SVX090C-EN
™
800

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Summary of Contents for Trane IntelliPak 1 Series

  • Page 1 Installation, Operation, and Maintenance IntelliPak™ 1 with Symbio ™ Commercial Packaged Rooftop Air Conditioners with VAV or SZVAV Controls and eFlex™/eDrive™ SAFETY WARNING Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
  • Page 2 (HCFCs). Not all refrigerants containing these compounds bump cap, fall protection, electrical PPE and arc have the same potential impact to the environment. Trane flash clothing). ALWAYS refer to appropriate advocates the responsible handling of all refrigerants.
  • Page 3 This document and the information in it are the property of The equipment described in this manual uses R-454B Trane, and may not be used or reproduced in whole or in refrigerant which is flammable (A2L). Use ONLY R- part without written permission. Trane reserves the right to 454B rated service equipment and components.
  • Page 4 Table of Contents Model Number Description ....8 Center of Gravity ......24 20 to 75 Tons, Air Cooled .
  • Page 5 Table of Contents Unit Replacement ......73 Removing Supply and Relief/Return Fan Shipping Channels (motors >5 Hp) ..40 Electrical Connection.
  • Page 6 Operation ......105 Trane Start-up Checklist ....176 Performance Data .
  • Page 7 Table of Contents Final Process ......200 Modbus Addresses ..... . 204 Unit Wiring Diagram Numbers .
  • Page 8 Model Number Description 20 to 75 Tons, Air Cooled Digit 1 — Unit Type Digit 9 — Heating Capacity Digit 11— Relief/Return Option S = Self-Contained (Packaged Rooftop) Note: When the second digit is “F” (Gas Heat), the 0 = None following applies: (M and T are available 1 = Barometric ONLY on 50 ton and above).
  • Page 9 Model Number Description Digit 13 — Filter (Pre DX/Final) (continued) Digit 15 — Supply Air Fan RPM Digit 18 — Zone Sensor K = Bag Filters with 2–inch Throwaway Prefilters/ 4 = 400 RPM 0 = None Cartridge Final Filters 5 = 500 RPM A = Dual Setpoint Manual or Auto Changeover L = Cartridge Filters with 2–inch Throwaway...
  • Page 10 Digit 35 — BAS/Communication Options Digit 29 — Miscellaneous Options 0 = None 0 = Motors without Internal Shaft Grounding 7 = Trane LonTalk Communication Interface A = Motors with Internal Shaft Grounding Module 8 = Modbus® Digit 30 — Expansion Module M = BACNet®...
  • Page 11 Model Number Description 90 to 130 Tons, Air Cooled Digit 1 — Unit Type Digit 11 — Relief Option Digit 15 — Supply Air Fan Drive S = Self-Contained (Packaged Rooftop) 0 = None A = 1000 RPM 7 = 100% Relief 15 HP with Statitrac B = 1100 RPM 8 = 100% Relief 20 HP with Statitrac C = 1200 RPM...
  • Page 12 0 = None 1 = Power Meter Digit 35 — BAS/Communication Options Digit 26 — Efficiency Options 0 = None 7 = Trane LonTalk Communication Interface 0 = Standard Efficiency Unit Module H = High Efficiency Unit 8 = ModBus®...
  • Page 13 An optional roof curb, specifically charge, unit wiring diagram numbers, as well as other designed for units is available from Trane. The roof curb kit pertinent unit data. A small metal nameplate with the Model must be field assembled and installed according to the Number, Serial Number, and Unit Weight is located just latest edition of the roof curb installation manual.
  • Page 14 Pre-Installation Unit Inspection • Take photos of the damage, if possible. • The owner must provide reasonable evidence that the To protect against loss due to damage incurred in transit, damage did not occur after delivery. perform inspection immediately upon receipt of the unit. Repair Exterior Inspection Notify the appropriate sales representative before...
  • Page 15 On all IntelliPak 1 units, a Trane factory start-up is an • Start-up must be performed by Trane or an agent of option and provides maximized unit reliability and overall...
  • Page 16 ☐ Check the unit for shipping damage and material hours prior to starting the refrigeration system. shortage; file a freight claim and notify Trane office. Important: All field-installed wiring must comply with NEC ☐ Verify that the installation location of the unit will and applicable local codes.
  • Page 17 Pre-Installation ☐ Connect the 3/4" CPVC furnace drain stub-out to a ☐ Position the steam trap discharge at least 12" below the proper condensate drain. outlet connection on the coil. ☐ Use float and thermostatic traps in the system, as Requirements for Hot Water Heat (SLH_) required by the application.
  • Page 18 Dimensional Data Figure 1. Heating/cooling unit dimensions - 20 to 75 tons air-cooled 8' SERVICE 8' SERVICE CLEARANCE CLEARANCE ACCES PANEL 4' 0" SERVICE (REFRIGERANT 1 3/8" CLEARANCE COMPONENTS) 2" 1 3/8" DRAIN HOLE DRAIN HOLE FRESH FRESH AIR INTAKE INTAKE ON 50, 55,60, 70, LOCATION...
  • Page 19 Dimensional Data Table 2. Heating/cooling unit dimensions (ft. in.) - air-cooled - SEH_, SFH_, SSH_, SLH_, SXH_ (continued) Nom. Tons w/Exh Fan w/ Ret Fan w/Exh Fan w/ Ret Fan 7-8 3/16 5-9 5/16 3-4 3/8 3-1½ 0-5 13/16 7-9 1/2 50, 55 7-8 3/16 6-9 3/8...
  • Page 20 Dimensional Data Figure 3. Unit base dimensions, SAH_ cooling only units (20 to 75 ton) Note: Use table that follows. Unit Base Electrical Entrance Table 4. Unit base dimensions, SAH_ cooling only units (20 to 75 ton) Fan Type Nom. Tons Relief Return 20–30...
  • Page 21 Dimensional Data Figure 4. Unit dimensions, SEH_, SFH_, SLH_, SSH_, SXH_ units (20 to 75 ton) Note: Use the following two table for dimensions. Use Table 6, p. 21 for CPVC furnace drain dimensions. FRESH AIR INTAKE 100% MODULATNG RELIEF DAMPER 100% MODULATNG RELIEF DAMPER 1"...
  • Page 22 Dimensional Data Figure 5. Unit base dimensions, SEH_, SFH_, SLH_, SSH_, SXH_ units (20 to 75 ton) Note: Use the table that follows. Holes Electrical Entrance Unit Base Notes: 1. SEH_ — For 200/230 volt electric heat units, use hole “A” (3⅝" diameter). 2.
  • Page 23 Dimensional Data Figure 6. S_H_ cooling and heating units (90-130 ton) Relief Air Outdoor Air 6' 9⅜" 1⅜" Drain Hole (both sides) 6' 7⅜" Note: Ultra Low Leak Pwer Relief Damper extends 0.65" beyaond lifting lugs. 6' 1⅝" 1" Condensate Drain (both sides) CPVC Furnace Drain (See CPVC Dimensional Table)
  • Page 24 Dimensional Data Center of Gravity Figure 7. Center of gravity dimensional data Table 8. Center of gravity dimensional data - inches Units without 100% Relief/Return Fan Units with 100% Relief/Return Unit Model Unit Size 156.8 46.2 147.8 45.7 157.5 46.3 148.1 45.8 150.6...
  • Page 25 Dimensional Data Electrical Entry Details Figure 8. Electrical entrance dimensions, SAH_ cooling only units (20 to 75 ton) Unit Base Electrical Entrance Legend A, B, C, D = 1⅛" diameter hole for field-installed control wiring 4⅛" or 5⅝" diameter hole for main power wiring (Remove the 4⅛"...
  • Page 26 Dimensional Data Figure 9. Electrical entrance dimensions, SEH_, SFH_, SLH_, SXH_ units (20 to 75 tons) Unit Base Electrical Entrance Legend A, B, C, D = 1⅛" diameter hole for field-installed control wiring 4⅛" or 5⅝" diameter hole for main power wiring (Remove the 4⅛"...
  • Page 27 Dimensional Data Minimum Required Clearance Figure 10. Minimum operation and service clearances for single unit installation NOT TO SCALE 8'0" MINIMUM SERVICE / AIRFLOW CLEARANCE (SEE NOTE 4) (NOTE 1) 6'0" MINIMUM 8'0" MINIMUM G / J SERVICE / AIRFLOW SERVICE / AIRFLOW CLEARANCE 8'0"...
  • Page 28 Dimensional Data Figure 11. Minimum operation and service clearances for multiple unit installation FRESH AIR FRESH AIR EXHAUST AIR INTAKE INTAKE EXHAUST AIR FRESH AIR EXHAUST AIR INTAKE CONDENSER CONDENSER SECTION SECTION (NOTE 1) (NOTE 1) 16'0" MINIMUM SERVICE / AIRFLOW 12'0"...
  • Page 29 100% economizer, throwaway filters, maximum motor sizes, 460V XL start, high capacity heat, and access doors. Weights shown represent approximate operating weights and have a ±10% accuracy. To calculate weight for a specific unit configuration, utilize Trane Select Assist™ or contact the local Trane sales representative. ACTUAL WEIGHTS ARE STAMPED ON THE UNIT WEIGHT PLATE.
  • Page 30 Installation, repair, removal, or disposal should be performed by trained service personnel. A2L Work Procedures At all times, Trane’s maintenance and service guidelines shall be followed. If in doubt, contact Trane technical WARNING support for assistance. Risk of Fire — Flammable Refrigerant!
  • Page 31 (Detection equipment shall be calibrated in a accelerate defrosting of components. Use only defrost and refrigerant-free area.) Verify the detector is not a potential cleaning procedures recommended by Trane. Do not source of ignition and is suitable for the refrigerant used. pierce or burn.
  • Page 32 A2L Information and Installation Requirements Decommissioning In addition, a set of calibrated weighing scales shall be available and in good working order. Before carrying out the decommissioning procedure, it is The refrigerant shall be recovered into the correct recovery essential that the trained service personnel is completely cylinders if venting is not allowed by local and national familiar with the equipment and all its details.
  • Page 33 A2L Information and Installation Requirements refrigerants. This standard limits the refrigerant lbs. As a result, no further leak detection system concentration in a space in the event of a refrigerant leak. evaluation is required. To meet the requirements, the UL standard defines •...
  • Page 34 A2L Information and Installation Requirements Minimum Room Area (A ) Adjustments Multiply the altitude adjustment factor in the table below by listed on the unit nameplate or in the Installation, Use equation below to adjust the minimum room area, as Operation, and Maintenance (IOM) manual.
  • Page 35 A2L Information and Installation Requirements If the refrigerant sensor has a fault, is at the end of its life, The refrigerant sensors do not need service. Use only or is disconnected, the unit will initiate the mitigation manufacturer-approved sensors when replacement is actions.
  • Page 36 If a “built-up” curb is provided by others, it should NOT be made of wood. Step-by-step curb assembly and installation instructions ship with each Trane accessory roof curb kit. Follow the • If a “built-up” curb is provided by others, keep in mind...
  • Page 37 1. To configure the unit Center-of-Gravity, utilize Trane sure that the gasket on the curb is not damaged while Select Assist or contact the local Trane sales office. positioning the unit. (The pedestal simply supports the 2. Attach adequate strength lifting slings to all four lifting...
  • Page 38 Installation Figure 13. Unit rigging Spreader Bar Lengths: – 8' for 20 to 59 ton unit Typical 40 to 130 Ton Unit Typical 20 to 36 Ton Unit – 10' for 60 to 75 ton unit – 12' for 90 to 130 ton unit Spreader 12' 0"...
  • Page 39 Installation ☐ Remove the shipping hold-down bolts and shipping ☐ Main supply gas pressure adequate. channels from the supply and relief /return fans with ☐ Flue Tubes clear of any obstructions. rubber or spring isolators. ☐ Factory-supplied flue assembly installed on the unit. ☐...
  • Page 40 Installation Condensate Drain Connections Units with Gas Furnace Units equipped with a gas furnace have a 3/4" CPVC drain Each unit is provided with 1" evaporator condensate drain connection stubbed out through the vertical support in the connections (two on each side of the unit for FC supply gas heat section.
  • Page 41 Installation Optional DDP Supply Fan verify and adjust as needed as follows: Shipping Channel Removal and 1. Back off ALL spring isolator jam nuts (4) at top of assembly (adjusting one spring effects all others) Isolator Spring Adjustment 2. Turn adjustment bolt (make small adjustments; again each change effects all other springs.
  • Page 42 Installation Figure 17. DDP shipping channel removal, isolator spring adjustment SPRING ISOLATORS (2 EACH SIDE) SHIPPING TIE DOWN (2 - 4 EACH SIDE) ISOLATOR SPRING ADJUST BOLT ISOLATOR SPRING JAM NUT ISOLATION BASE SPRING ISOLATOR ASSEMBLY SEISMIC ANCHOR (DO NOT REMOVE) TIE DOWN BOLT SHIPPING CHANNELS UNIT BASE...
  • Page 43 Installation Figure 18. Removing supply and relief fan assembly shipping hardware (20 to 75 ton) Rubber Isolator Locations DETAIL “A” ISO-2 4 Locations 1/2” - Tie Down Bolt 1/2” - Flat Washer ISO-5 Shipping Channel TOP VIEW ISO-4 ISO-3 Spring Isolator Locations ISO-1 ISO-2 Shipping Channel...
  • Page 44 Installation Figure 19. Removing supply and relief fan assembly shipping hardware (90 to130 ton) Supply Fan Assembly TOP VIEW ISO-1 ISO-1 ISO-3 ISO-3 ISO-2 Optional Relief Fan Assembly TOP VIEW Tie Down Bolt ISO-4 Shipping Channel ISO-3 Tie Down Bolt Tie Down Bolt Shipping Channel Shipping Channel...
  • Page 45 Installation Figure 20. Removing return fan assembly shipping hardware (20 to 75 ton) RETURN FAN (20 to 75 Ton) TOP VIEW Shipping Tie Down (3) 25-30 Ton ISO-2 1/2” Tie 1/2” Lock Down Bolt Washer ISO-1 Remove & Remove & Discard Discard Shipping Tag...
  • Page 46 Installation Figure 21. Outside air tubing schematic Fresh Air Fresh Air Transducer Transducer Upper Upper Left side Left side Flow Flow High High Ring Ring Upper Upper Flow Flow High High Ring Ring Units with Statitrac Figure 22. Return air pressure tubing schematic 1.
  • Page 47 Installation Figure 23. Pressure sensing Outside Air Sensing Kit Top Port Connection 2’ x 3/16” OD Tubing Outside Air Factory Provided Pressure Sensor Pneumatic Tubing (Field Installed) Sensor Mounting Bracket Factory Installed Bracket Tubing Connector (in vertical support) To Calibration Solenoid Duct, Space and Return Plenum Pressure Transducer Tubing Schematic Space Static...
  • Page 48 Installation WARNING Important: Gas pressure in excess of 14–inch w.c. or 0.5 psig will damage the gas train. Hazardous Gases and Flammable Vapors! NOTICE Failure to observe the following instructions could Gas Valve Damage! result in exposure to hazardous gases, fuel Failure to follow instructions below could result in substances, or substances from incomplete gas valve damage from incorrect gas pressures,...
  • Page 49 Installation 3. Confirm that the piping is adequately supported to avoid gas train stress. Table 16. Sizing natural gas pipe mains and branches Gas Input (Cubic Feet/Hour) Gas SupplyPipe Run (ft) 1¼" Pipe 1½" Pipe 2" Pipe 2½" Pipe 3" Pipe 4"...
  • Page 50 Installation Table 19. Natural gas – two-stage and modulating gas heat settings Natural Gas High Fire Low Fire Ratio Shutter Regulator Burner Size Input Input Setting Turns Signal Signal (a) (b) 235 MBh 2-stg 2030 2030 3300 2.5 - 3 CW 350 MBh 2-stg 2130 2130...
  • Page 51 Installation Table 20. LP gas – two-stage and modulating gas heat settings Propane High Fire Low Fire Ratio Shutter Regulator Burner Size Orifice Size Input Input Setting Turns Signal Signal (a) (b) 235 MBh 2-stg 1950 1950 3250 2 - 2.5 4.5 - 4.75 CW 0.302 350 MBh 2-stg...
  • Page 52 Installation Table 22. LP gas – ultra modulating gas heat settings Propane Vdc Signal FHi Fan Speed Ratio Regulator Heater Size Turns High Fire Low Fire Fasco 500 MBh 10 – 12 CCW 800 MBh 10 – 12 CCW 850 MBh 10 –...
  • Page 53 Installation Figure 24. Two-stage and Mod gas train for 235 to 500 MBh Combustion air tubing taps High gas pressure switch Radio regulator Manual shut-off Manifold gas valve pressure tap Main gas Combustion fan solenoid valves Low gas pres- sure switch Main gas regulator outlet pressure tap Main gas...
  • Page 54 Installation Figure 25. Two-stage and Mod gas train for 850 MBh Combustion air tubing taps High gas pressure switch Radio regulator Manifold gas pressure tap Manual shut-off valve Combustion fan Main gas solenoid valves Main gas regulator outlet pressure tap (behind gas switch) Low gas pressure...
  • Page 55 Installation Figure 26. Two-stage and Mod gas train for 1000 MBh Combustion air High gas tubing taps pressure switch Radio regulator Manual shut-off valve Manifold gas pressure tap Main gas solenoid valves Combustion Main gas regulator Low gas outlet pressure tap pressure switch Main gas...
  • Page 56 Installation Figure 27. Ultra modulating gas train for 500 to 850 MBh Ratio regulator Manifold gas manual shut-off valve Pilot gas pressure tap Burner (behind pilot gas manifold solenoid) Pilot solenoid Main gas Pilot valve pressure solenoid Connections valves regulator into burner Manifold gas Main gas regulator...
  • Page 57 Installation Figure 28. Ultra modulating gas train for 1000 MBh Ratio regulator Manifold gas manual shut-off valve Burner manifold Manifold gas pressure tap Connection Main gas into burner solenoid valves Inlet gas pressure tap Pilot Pilot Pilot gas pressure tap solenoid (behind pilot solenoid) pressure...
  • Page 58 Installation General Coil Piping and is installed in a remote location, use field supplied wiring to extend the control wires from the heater section to the Connection Recommendations valve. Two access holes are provided in the unit base as illustrated in . Proper installation, piping, and trapping is necessary to ensure satisfactory coil operation and to prevent Use the following guidelines to enhance both the...
  • Page 59 Installation heater section to the valve. Two access holes are provided continuous discharge operation. FT type traps are in the unit base as illustrated in . required if the system includes either of the following: Use the following guidelines to enhance both the a.
  • Page 60 Installation Figure 30. Hot water piping (20 to 75 ton) 3-Way Modulating Valve (Field Installed) Return Water Air Vent OUTLET Bypass Gate Valves Pressure Drop Balancing Globe Valve Hot Water Coil (ARI Listed) Strainer INLET Supply Water Figure 31. Hot water piping (90 to 130 ton) 3-Way Modulating Valve (Field Installed) OUTLET...
  • Page 61 Installation Figure 32. Steam coil piping (20 to 36 ton) Air Vent 2-Way Modulating Valve (Field Installed) Strainer Supply Steam INLET Type NS Steam Coil Gate Valve (ARI Listed) Steam Trap Strainer (Float and Thermostatic Type) OUTLET Return Figure 33. Steam coil piping (40 to 130 ton) 2-Way Modulating Valve...
  • Page 62 Failure to use copper conductors could result in or other energy storing components provided by equipment damage as the equipment was not Trane or others, refer to the appropriate designed or qualified to accept other types of manufacturer’s literature for allowable waiting periods conductors.
  • Page 63 Installation Note: Each power supply must be protected from short WARNING circuit and ground fault conditions. To comply with Proper Field Wiring and Grounding NEC, protection devices must be sized according to Required! the “Maximum Over current Protection” (MOP) or “Recommended Dual Element”...
  • Page 64 Installation Figure 36. Typical field power wiring (90 to 130 ton) 1XD1 1QB1 Aux. Control Box RT-SVX090C-EN...
  • Page 65 Installation Table 24. Customer connection wire range Wire qty per Component type/size Wire range Notes phase 510A terminal block 6 AWG - 250 kcmil 760A terminal block 4 AWG - 500 kcmil 150A disconnect switch (Std SCCR) 14 AWG - 1/0 AWG Terminal block and STD SCCR disconnect switch sizes are calculated by selecting the size greater than or equal to 1.15 X 250A disconnect switch (Std SCCR)
  • Page 66 Installation Table 25. Compressor electrical service sizing data (20 to 130 tons) (continued) 200 V 230 V 460 V 575 V No. of Tonnage RLA/MRC RLA/MRC RLA/MRC RLA/MRC Compres- LRA (ea.) LRA (ea.) LRA (ea.) LRA (ea.) (ea.) (ea.) (ea.) (ea.) sors 46.0...
  • Page 67 Installation Table 26. Electrical service sizing data — condenser fan motors — 20 to 130 tons (continued) 200 V 230 V 460 V 575 V Tonnage, Type No. of Motors FLA/MOC FLA/MOC FLA/MOC FLA/MOC (ea.) (ea.) (ea.) (ea.) 40H, 40V 50S, 55S 50S, 55S Low Ambient 50H, 50V, 55H, 55V...
  • Page 68 Installation Table 28. Electrical service sizing data — single supply/relief/return motors WITHOUT bypass option — 20 to 130 tons (continued) 200 V 230 V 460 V 575 V MOC (ea.) MOC (ea.) MOC (ea.) MOC (ea.) 65.5 55.5 27.7 22.5 76.4 66.5 33.3...
  • Page 69 Installation Table 31. Voltage utilization range (continued) Unit Voltage Voltage Utilization Range 460/60/3 414-506 575/60/3 517-633 Field Installed Control Wiring NOTICE Use Copper Conductors Only! The IntelliPak rooftop has many operating modes. The flexibility of having several system modes depends upon Failure to use copper conductors could result in the type of sensor and/or remote panel selected to equipment damage as the equipment was not...
  • Page 70 This electronic analog sensor features single setpoint capability and timed override with override cancellation. It Failure to use copper conductors could result in is used with a Trane Integrated Comfort™ system. Refer to equipment damage as the equipment was not for the Temperature vs. Resistance coefficient.
  • Page 71 Installation fully configurable; therefore,Table 34, p. 71 provides the Table 34. VOM factory default settings. Heat Cool VOM Input OUTPUT OPERATION If one or more of the 5 VOM inputs are closed, the unit will Mode Status enter the VOM mode with the highest priority (A highest, E Mode A Supply fan Off/0%...
  • Page 72 Installation Table 34. VOM (continued) Table 34. VOM (continued) Any active VOM mode that commands the Supply Fan, Relief Fan or Return Heat Cool VOM Input OUTPUT OPERATION Fan On requires that all installed isolation dampers must be Open >= to the Mode Status Isolation Damper Position Fan Start Setpoint before the fans are allowed to start.
  • Page 73 Unit Replacement This section covers the removal and preparation necessary WARNING for setting the R-454B replacement unit in place. For more Fiberglass Wool! detailed information, please see the IntelliPak™ Rooftop Exposure to glass wool fibers without all necessary 20 to130 Tons, R-410A – Engineering Bulletin (RT- PPE equipment could result in cancer, respiratory, PRB027*–EN).
  • Page 74 Unit Replacement Main Electrical Power 3. Remove drip leg Installed in the gas piping near the unit. Lock and tag out unit main electric power and remove 4. Remove factory-supplied flue assembly installed on the power supply wiring from installed disconnect/terminal unit.
  • Page 75 Unit Replacement Figure 38. Duct, space, and return plenum pressure Remove supply and return duct work if it was directly transducer connected to the unit. Installation of New Units See unit IOM and appropriate programming guide for installation operation and programming requirements. For Lifting Procedures, see “Unit Rigging and Placement,”...
  • Page 76 Unit Replacement Figure 40. Perimeter gasket material Perimeter Gasket Duct Opening Perimeter Gasket Roof Curb Figure 41. Typical partial perimeter curb with pedestal illustration for 20- 75 ton standard units Table 37. Typical curb dimensions for 20 to 75 ton SAHF units with air-cooled condensers SAHF-C20,C25, C30 SAHF-C50, C55 SAHF-C60, C70, C75...
  • Page 77 Unit Replacement Table 37. Typical curb dimensions for 20 to 75 ton SAHF units with air-cooled condensers (continued) SAHF-C20,C25, C30 SAHF-C50, C55 SAHF-C60, C70, C75 Curb Dimensions SAHF-C40 2' 11-5/16" 4' 0" 4' 0" 4' 0" 1' 10-5/8" 1' 10-5/8" 1' 10-5/8"...
  • Page 78 Unit Replacement Figure 42. Full perimeter curb with pedestal (20 to 75 ton units built prior to 1991) Table 39. 20 to 75 ton roof curb dimensions, downflow (units built prior to 1991) Unit Model Size 20, 25, 30 7'–1/2" 21'–3 3/4"...
  • Page 79 Unit Start-up Sequence of Operation Mechanical cooling (DX) is available for Rapid Restart if the Outdoor Air Temperature is above the Low Ambient NOTICE Lockout setpoint. Compressor Failure! After power-up start delay is satisfied, the unit will override all other forms of time delays (i.e. ICS, VAV Box Stroke Failure to follow instruction below could result in Time, Outdoor Air Damper Stroke Time) and allow the compressor failure.
  • Page 80 (referred to as Occupied-Bypass). To accomplish operation. this, Trane wired or wireless zone sensor devices are Cool equipped with “On” and “Cancel” push buttons. Some Cool mode is reported when the control objective is to sensors refer to the buttons as “Occupied”...
  • Page 81 Unit Start-up minimum speed, energize the VAV Box Relay and Figure 43. Operating Modes wait the duration of the VAV Box Stroke Time (adjustable). The VAV Box Stroke Time allows the VAV boxes in the system to open. The supply fan speed will then increase to 100% or the maximum speed subject to high duct static pressure limit.
  • Page 82 Unit Start-up The circuit is currently being inhibited from starting (and control units will operate the supply fan per Duct Static running), but may be allowed to start if the inhibiting or Pressure Setpoint, if the installed heat type allows. (See diagnostic condition is cleared.
  • Page 83 Unit Start-up Supply Fan Control When active, the Symbio 800 operates in a discharge air control mode, modulating the outdoor air damper to provide When IntelliPak units with the Symbio 800 controller have cooling capacity per Discharge Air Cooling Setpoint Active. one or more supply fans installed with VFD drives.
  • Page 84 Unit Start-up seconds to enter or leave Supply Fan VFD Bypass Note: The enabling and disabling of VFD Bypass will be Mode. dis-allowed until the Duct Static Pressure indicates no flow per the below option. • Enabling and disabling Supply Fan VFD Bypass Mode can only take place from the unit user interface.
  • Page 85 Unit Start-up Outdoor Air Minimum Position Control Demand control ventilation setpoints used in all methods. This function provides a fixed damper position for minimum • Space CO high limit outdoor airflow requirements. The damper is controlled to a • Space CO low limit position determined by Economizer Minimum Position DCV when enabled with outdoor airflow control (Traq),...
  • Page 86 Unit Start-up Table 41. Outdoor air damper minimum ventilation control (continued) Traq Outdoor Air Flow Description Outdoor Air Damper Demand Control Compensation Ventilation Controlling Setpoints Disabled Disabled Enabled/Active Outdoor Air Damper Setpoint: Minimum Position is reset Economizer Minimum based on space CO Position Setpoint Active Settings: Design Min OA Damper...
  • Page 87 Unit Start-up airflow. See Heat Types for more information. A valid space reset function calculates and reports Discharge Air Cooling temperature input must be provided to perform heating Setpoint Status = 52.5°F. The controller will provide modes such as Daytime Warm Up and Morning Warm Up discharge air at 52.5°F.
  • Page 88 Unit Start-up setpoint and space temperature is 900°F-seconds or 1. This is the point at which the cooling capacity equals greater. The integrated error is calculated once every 10 0% and the error integrator starts to add up. Error seconds. See figure below for an example of changing integration does not begin until the capacity is 0%.
  • Page 89 Unit Start-up increases the supply fan speed (to prevent coil frost). • Inter-Stage Time Cooling capacity and supply fan speed both can increase Minimum OFF Time — For each compressor (fixed or to 100%. variable speed), when the compressor has been turned If the unit discharge air temperature reduces to the OFF for any reason, a timer will be started for that Discharge Air Temperature Minimum Cool Limit setting or...
  • Page 90 Unit Start-up This circuit-level feature applies to the variable speed On single circuit units, or two circuit units with one circuit compressor and enforces a maximum speed limit for a running, the largest running compressor will be chosen to fixed time period following start-up. During normal stop.
  • Page 91 Unit Start-up Low Compressor Suction Pressure Wear Balancing Calculation Protection The wear balancing formula for compressor operation is the number of compressor starts multiplied by a factory The Low Compressor Suction Pressure diagnostic, Low determined wear factor, plus all of the normal run time. Compressor Suction Pressure Start Inhibit, and Low Starting accounts for a significant amount of normal run Compressor Suction Pressure Limit work together to...
  • Page 92 Unit Start-up pressure. This feature will provide maximum capacity while When this function is active, an indication will be made to preventing a high pressure cutout. the user interface. Depending on severity, both instant and delayed shutdowns are possible. Shutdowns may be The discharge pressure limit is based on the discharge temporary or require a manual reset.
  • Page 93 Unit Start-up As frost builds on a coil, thermal resistance increases and If a unit is configured with hot gas bypass, the hot gas airflow decreases. Frost buildup on the coil can also cause bypass system is functional whenever circuit 1is operating. instabilities in superheat control.
  • Page 94 Unit Start-up In situations where the superheat rapidly falls to very low Note: Under the most common scenario when both the values, special control modes are necessary to dry out EXV electronic controller and unit controller are excess refrigerant liquid in the evaporator, suction line, and power cycled, EXV Calibration may occur twice.
  • Page 95 Unit Start-up Given the economizer decision methods above, if Mode Status is not Cool or a sensor required for Comparative Enthalpy + Fixed Dry Bulb is configured and dehumidification control is invalid. the return air or humidity sensor goes out of range or fails, Relative Humidity a fallback method of Fixed Dry Bulb or Reference Enthalpy + Fixed Dry Bulb is selectable in the user interface Feature...
  • Page 96 Unit Start-up Cooling capacity will stage to satisfy the evaporator cooling supply fan to be at full speed. Other heat types allow demand. The hot gas reheat valve modulates to maintain a modulating supply fan speeds in specific operating modes. space temperature setpoint.
  • Page 97 Unit Start-up Electric Heat Protection If gas/flame is not detected, such as air in lines, a failure to start diagnostics is set. There are three automatic high temperature limit switches that will trip when exposed to a high temperature. They will Failure to Start reset automatically once the temperature drops into an If pre-purge is not detected within 60 seconds, after...
  • Page 98 Unit Start-up Unoccupied Cooling Mechanical Enable and Unoccupied Table 45. External supply fan control points (continued) Cooling Economizing Enable are settings to enable or disable cooling in unoccupied mode. Object Description Name Unoccupied Heating Supply Fan Supply fan speed is being increased or decreased due When the unit is in unoccupied mode and the valid space Speed to a limit control action.
  • Page 99 Unit Start-up Table 47. External relief fan control points • Outdoor Air Flow Compensation Enable = Disable Morning Warm Up, Pre-Cool, Night Purge, Unoccupied, Object Name Description Object States or and Off modes of operation will override damper minimum values position to 0%.
  • Page 100 Unit Start-up Emergency Stop at the provided five binary inputs (Mode A, Mode B, Mode C, Mode D, Mode E). When any of the normally open Symbio 800 accepts a dry contact closure input suitable for contacts are closed, VOM initiates specified functions such customer connection to request Stop or Auto modes from as space pressurization, exhaust, purge, purge with supply an external device.
  • Page 101 Unit Start-up Table 49. Ventilation override mode VOM Input OUTPUT OPERATION Heat Cool Mode Status Mode A Supply fan Off/0% (Unit Off) Outdoor air damper Closed Relief fan / Relief damper Off/Closed Return Fan / Relief Damper Off/Closed VAV Box Relay De-Energized Discharge Isolation Damper 0% / Closed...
  • Page 102 Unit Start-up Table 49. Ventilation override mode (continued) VOM Input OUTPUT OPERATION Heat Cool Mode Status Mode E Supply fan On/Duct Static Pressure Control Fan Only (Purge with Duct Static Pressure Control) Outdoor air damper Open Relief Fan / Relief Damper On / Open Return Fan / Relief Damper On / Open...
  • Page 103 If both points are True (locked out) at the same time, both of an analog signal to the Symbio controller which will be honored. Trane Graphical Programming (TGP2) can represents pressure drop. Monitoring is available for be used to control these points.
  • Page 104 Unit Start-up equipment provides normal heating, cooling, and Heat Cool Mode will transition to “Fan Only”. Compressor ventilation. Operation is disabled, heating operation is disabled, and outdoor air dampers are closed all normal operation for Heat Cool Mode Status: Off “Off”...
  • Page 105 Unit Start-up outdoor air dampers are at minimum ventilation (all normal The unit will stay in this state until the leak is cleared, or the operation for Heat mode). failed sensor has been replaced. VFD bypass is not a requirement for leak detection. This Once the leak is cleared, the unit will continue to mitigate only explains what action will or will not be taken if a leak is for five minutes.
  • Page 106 0.76 • Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 53.49 10.00 0.43 0.35...
  • Page 107 • Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 1000 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 3.60 10.00 0.39 for unit-specific operating temperatures and elevations.
  • Page 108 Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 1.21 1000 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 5.42 10.00 0.48 for unit-specific operating temperatures and elevations.
  • Page 109 • Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 1.03 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 2.55 10.00 1.03 for unit-specific operating temperatures and elevations.
  • Page 110 • Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 1000 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 5.37 10.00 0.65 for unit-specific operating temperatures and elevations.
  • Page 111 1.25 • Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 2.13 10.00 0.69 for unit-specific operating temperatures and elevations.
  • Page 112 1.64 • Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 3.70 10.00 2.06 for unit-specific operating temperatures and elevations.
  • Page 113 • Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 1000 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 6.94 10.00 1.17 for unit-specific operating temperatures and elevations.
  • Page 114 Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 879.17 10.00 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 1.38 1.24 2.01 2.09...
  • Page 115 Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 9.17 10.00 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 1.47 2.58 for unit-specific operating temperatures and elevations.
  • Page 116 Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 1000 1000 159.17 10.00 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 2.77 2.48 3.08 3.20 for unit-specific operating temperatures and elevations.
  • Page 117 • Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 2.57 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 4.17 10.00 2.07 for unit-specific operating temperatures and elevations.
  • Page 118 • Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 1.17 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 6.28 10.00 1.86 for unit-specific operating temperatures and elevations.
  • Page 119 Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 1200 1200 72.06 10.00 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 2.67 2.24 2.34 2.22 for unit-specific operating temperatures and elevations.
  • Page 120 Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 1.63 1.37 1.31 1.25 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 1355.08 10.00 for unit-specific operating temperatures and elevations. 1.63 1.37...
  • Page 121 Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 2.61 1000 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 4.72 10.00 2.34 for unit-specific operating temperatures and elevations.
  • Page 122 2.09 • Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 9.17 10.00 2.48 for unit-specific operating temperatures and elevations.
  • Page 123 Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 689.17 10.00 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 3.28 2.93 2.49 2.58...
  • Page 124 1.57 • Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 9.17 10.00 1.70 for unit-specific operating temperatures and elevations.
  • Page 125 • Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 2.98 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 54.92 10.00 4.95 for unit-specific operating temperatures and elevations.
  • Page 126 0.53 • Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 4.91 10.00 0.32 for unit-specific operating temperatures and elevations.
  • Page 127 • Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 0.46 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 7.86 10.00 0.24 for unit-specific operating temperatures and elevations.
  • Page 128 Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 346.50 10.00 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 0.21 0.01 0.26 0.18...
  • Page 129 • Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 1.55 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 1.99 10.00 5.04 for unit-specific operating temperatures and elevations.
  • Page 130 Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 10.00 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 0.01 for unit-specific operating temperatures and elevations.
  • Page 131 • Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, 0.22 barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 10.00 3.10 for unit-specific operating temperatures and elevations.
  • Page 132 1.76 • Catalog curves represent fan data corrected to the following standard conditions: 70°F dry bulb temperature, barometric pressure of 14.696 psia, and an air density of 0.075 lb/ft3. Use Trane Select Assist to generate fan curves 10.00 0.34 for unit-specific operating temperatures and elevations.
  • Page 133 Unit Start-up Pressure Drop Tables Figure 75. Wet airside pressure drop at 0.075 lb/cu.ft. 20 to 75 ton evaporator coil Figure 76. Dry airside pressure drop at 0.075 lb/cu.ft. 20 to 75 ton evaporator coil RT-SVX090C-EN...
  • Page 134 Unit Start-up Figure 77. Wet airside pressure drop at 0.075 lb/cu.ft. 90 to 130 ton evaporator coil Evaporator Wet Airside Pressure Drop at 0.075 lb/cu.ft. 20-130 Ton 4000 6000 800010000 20000 40000 60000 Unit Airflow, CFM RT-SVX090C-EN...
  • Page 135 Unit Start-up Figure 78. Dry airside pressure drop at 0.075 lb/cu.ft. 90 to 130 ton evaporator coil Evaporator Dry Airside Pressure Drop at 0.075 lb/cu.ft. 20-130 Ton 4000 6000 800010000 20000 40000 60000 Unit Airflow, CFM RT-SVX090C-EN...
  • Page 136 Unit Start-up Component Static Pressure Drops RT-SVX090C-EN...
  • Page 137 Unit Start-up RT-SVX090C-EN...
  • Page 138 Unit Start-up Table 53. Component static pressure drops (in. W.G.)—relief damper for return fan Relief Damper for Relief Damper for Nom Tons Nom Tons Return Fan Return Fan 4000 0.08 10000 0.28 6000 0.19 14000 0.56 8000 0.35 17000 0.75 50-55, 9000 0.44...
  • Page 139 Unit Start-up Table 54. Modulating 100% relief fan performance — 20 to 75 tons (continued) Negative Static Pressure 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 Tons 12000 1.49 2.09 3.00 4.02 5.07 6.09 7.04 7.91 15000 2.68 3.15 3.96 5.02 6.24 7.53...
  • Page 140 Unit Start-up Table 56. 100% Relief fan drive selections — 20 to 75 tons (continued) 3 Hp 5 Hp 7.5 Hp 10 Hp 15 Hp 20 Hp Drive No. Drive No. Drive No. Drive No. Drive No. Drive No. Table 57. 100% Relief fan drive selections — 90 to 130 tons 15 HP 20 HP 25 HP...
  • Page 141 Performance data includes cabinet and rain hood effect. Damper pressure drop must be added to the return duct static. See table Component static pressure drops - relief damper for return fan in Performance Data. Shaded area indicates nonstandard BHP or RPM selections. Contact a local Trane® representative for more information. Table 61. Return fan performance—40, 50 and 55 ton air-cooled and (27" Fan) Return Fan Static Pressure Including Relief Damper P.D.
  • Page 142 Performance data includes cabinet and rain hood effect. Damper pressure drop must be added to the return duct static. See table Component static pressure drops - relief damper for return fan in Performance Data. Shaded area indicates nonstandard BHP or RPM selections. Contact a local Trane® representative for more information. Table 62. Return fan performance—60 to 75 tons air-cooled and (36.5" fan) Return Fan Static Pressure Including Relief Damper P.D.
  • Page 143 Unit Start-up Table 63. 100% Return fan drive selections — 20 to 75 tons air-cooled and 3 Hp 5 Hp 7.5 Hp 10 Hp 15 Hp 20 Hp Drive No. Drive No. Drive No. Drive No. Drive No. Drive No. 1000 1100 1200...
  • Page 144 Unit Start-up Figure 79. 20 ton standard efficiency operating Figure 81. 20 ton eFlex variable speed operating pressure curve (all compressors and condenser fans pressure curve (compressor at 100% and condenser all fans ON) 20T Standard Efficiency 20T High Efficiency 20T High Efficiency 20T eFlex Variable Speed F Ambient...
  • Page 145 F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient Unit Start-up F Ambient F Ambient F Ambient Figure 83.
  • Page 146 85 F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient...
  • Page 147 F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient Unit Start-up...
  • Page 148 F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient...
  • Page 149 F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient Unit Start-up F Ambient Figure 99. 55 ton high efficiency—circuit 2 operating Figure 101. 55 ton eFlex variable speed—circuit 2 F Ambient Suction Pressure, PSIG pressure curve (all compressors and condenser fans...
  • Page 150 F Ambient F Ambient F Ambient F Ambient Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient Ambient F Ambient F Ambient F Ambient F Ambient...
  • Page 151 F Ambient 95 F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient...
  • Page 152 (Use 60T High Efficiency for circuit 2) (Use 6 F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient ient F Ambient F Ambient F Ambient F Ambient...
  • Page 153 F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient F Ambient Unit Start-up F Ambient F Ambient F Ambient F Ambient Figure 115. 75 ton eFlex variable speed—circuit 2 Figure 117.
  • Page 154 F Ambient F Ambient F Ambient F Ambient Unit Start-up Figure 119. 115 ton standard efficiency operating WARNING pressure curve (all compressors and condenser fans Suction Pressure, PSIG No Step Surface! Failure to follow instruction below could result in death or serious injury. 115T Standard Efficiency 115T Standard Efficiency Do not walk on the sheet metal drain pan.
  • Page 155 Unit Start-up service screen. Refer to the latest edition of the Note: Gravity will cause the damper to close. Support applicable programming manual for applications for the or secure the damper blades while removing the SERVICE TEST screens and programming actuator to prevent unexpected damper rotation.
  • Page 156 Unit Start-up Figure 120. Outside air and return air linkage Table 64. O/A Damper travel adjustment adjustment (standard and low leak dampers only) Damper Crank Arm Hole Configuration Standard and Low Top View Leak F/A Dampers Ultra Low Leak F/A Position of (Figure 120, p.
  • Page 157 Unit Start-up Table 65. Outside air damper pressure drop (inches Important: COMPRESSOR SERVICE VALVES MUST BE w.c.) — air-cooled (continued) FULLY OPENED BEFORE STARTUP (SUCTION, DISCHARGE, AND OIL LINE). Damper Position 3. Close the disconnect switch or circuit protector switch that provides the supply power to the unit terminal block (2XD1 on 20-75T units / 1XD1 on 90-130T units) or the 10000...
  • Page 158 Unit Start-up ENTER key to confirm this choice. WARNING WARNING Rotating Components! Failure to disconnect power before servicing could Rotating Components! result in rotating components cutting and slashing Failure to disconnect power before servicing could technician which could result in death or serious result in rotating components cutting and slashing injury.
  • Page 159 Unit Start-up Electronic Compressor Protection differential across the expansion valve that limits its capacity. Under these conditions, it is not unusual to hear Module (CPM) the compressor rattle until the suction pressure climbs and The CSHP*** compressors come equipped with a the flow rate increases.
  • Page 160 Unit Start-up Figure 122. Compressor locations Refrigeration Systems: Refrigeration Systems: Refrigeration System: 25S, 30S, 30H 20V, 25V, 30V 20S, 20H, 25H Circuit 1 Circuit 1 Circuit 1 Condenser Condenser Condenser Fans & Fans & Fans & Motors Motors Motors Comp 1A Comp 1B Comp 1C Ctrl.
  • Page 161 Unit Start-up Table 67. Fixed speed staging sequence and compressor data 25T (Std), 30T (Std), 30T (High) Stage Comp 1A Comp 1B Comp 1C 40T - 130T (All Std. and High Efficiency Systems) Stage Comp 1A Comp 1B Comp 2A Comp 2B Table 68.
  • Page 162 4. Subtract the saturated vapor temperature obtained in discretion of Trane Product Support step 2 from the actual suction line temperature obtained in step 3. The difference between the two Pressure curves included in this document are based on temperatures is known as “superheat”.
  • Page 163 Symbio controller. discharge pressure within a defined range, in order to When communicating with Trane Product Support, maintain acceptable refrigerant pressure differences please report the superheat value(s) described throughout the system.
  • Page 164 Unit Start-up Electric, Steam and Hot Water Table 70. Minimum outside air temperature Start-Up eFlex™ units Standard Unit Minimum Outside Std & 20, 60, 25, 30, Air Temperature for Mechanical (Variable Air Volume Systems) High Cap 70, 75 40, 50, Cooling units 55 ton...
  • Page 165 Unit Start-up WARNING for the Manual Override screens and programming instructions. Rotating Components! 5. Program the following system components for Failure to disconnect power before servicing could operation by scrolling through the displays: result in rotating components cutting and slashing Electric Heat technician which could result in death or serious injury.
  • Page 166 Contact Trane Large Commercial amount of oxygen used and modify the air volume or the Technical Support if failures continue to gas pressure to obtain the proper air/fuel ratio.
  • Page 167 Unit Start-up 2. Verify Gas Pressure at High Fire: 127, p. 171 for air damper location. If the O is high, close ½ notch. If the O is low, open ½ notch. a. Navigate to the Gas Heat Manual override screen.
  • Page 168 8. The LME7 will then alternately display P2 and a three- support article for how to video instructions: digit number that is representative of the high fire speed https://support.trane.com/hc/en-us/sections/ divided by 10. To adjust the high fire speed, press and 27318546270221. If using a Siemens AZL23...
  • Page 169 Unit Start-up Table 72. Recommended manifold pressures and O levels for furnace operation — LP Low Fire (1%) High Fire (100%) Burner size Manifold Manifold (in. w.c) (in. w.c) 235 MBh 2-stg 6.4 - 6.8 0.18 - 0.21 3.2 - 3.6 0.70 - 0.73 350 MBh 2-stg 6.8 - 7.2...
  • Page 170 Unit Start-up Figure 125. Ratio regulator - two-stage and modulating Connection for com- Adjustment screw (under cap bustion blower for 235-500 MBh, external for tubing 850-1000 MBh) for manifold Tap location for pressure adjustment (during load line pressure Low Fire O adjustment only) Connection for combustion air...
  • Page 171 Unit Start-up Figure 127. Air Damper location - two-stage and modulating damper Ultra Modulating Gas Furnace Important: • Flue readings should be taken from center Ultra modulating gas heaters are available for the 500, 850 of the flue and at least 4 inches down from and 1000 MBh heater sizes.
  • Page 172 Support for information on how to adjust maximum fan purge, the controller will lockout. Re-establish speed (FHi). pilot by repeating startup from Step 1. Contact Trane Large Commercial Technical Support if 11. Use a flue analyzer to measure the oxygen (O failures continue to occur. carbon dioxide (CO ), and carbon monoxide (CO) levels in the flue gas.
  • Page 173 Unit Start-up Figure 128. Gas Heat Manual Override screen - modulating Figure 129. Ratio regulator — ultra modulating Tap location for load line pressure Connection for combustion air line Adjustment screw (under black cap) for manifold pressure adjustment during low-fire pressure adjustment only RT-SVX090C-EN...
  • Page 174 Unit Start-up Figure 130. Main gas regulator and inlet pressure tap locations — ultra modulating Tap location for Pilot gas Pilot gas inlet pressure regulator pressure tap Tap location for Main gas regulator outlet pressure from main gas regulator Figure 131. Manifold pressure tap location — ultra modulating Manifold gas manual shutoff Tap location...
  • Page 175 Unit Start-up Figure 132. Air damper location— ultra modulating damper Final Unit Checkout unit mounted disconnect switch (2QB1 on 20-75T units / 1QB1 on 90-130T units). After completing all of the checkout and start-up ☐ Turn the 115 volt control circuit switch (1S1) to the "On" procedures outlined in the previous sections (i.e., operating position.
  • Page 176 Trane Start-up Checklist This checklist is intended to be a guide for the Trane Important: Except where noted, it is implied that the Trane technician just prior to unit 'start-up'. Many of the technician is to use this checklist for...
  • Page 177 Trane Start-up Checklist Table 75. Startup checklist for 20–75 ton air-cooled units (continued) Completed? Unit Configuration and Setup Verify model number in the UCM configuration matches unit model number on nameplate Configure unit using IOM and critical control parameters using critical control parameters table...
  • Page 178 Trane Start-up Checklist Table 76. Startup checklist for 90–130 ton air-cooled units (continued) Completed? All unit drain lines and traps are properly installed Remove electrical access panel fastened (9) bolt/screws or open access Verify unit is grounded. Confirm a ground wire is coming from the power source...
  • Page 179 Trane Start-up Checklist Table 76. Startup checklist for 90–130 ton air-cooled units (continued) Completed? Verify steam heat swing check vacuum breakers installed and vented Verify 2-way modulating valve has been installed Verify steam trap installed properly with discharge 12” below the outlet connection on the coil...
  • Page 180 Trane Start-up Checklist Figure 133. Dry bulb changeover map RT-SVX090C-EN...
  • Page 181 Trane accepts no responsibility for the performance or operation of our equipment in which ultraviolet devices were installed outside of the Trane factory or its approved suppliers. Table 78. Gas heat high limit cutout FC or A/F —...
  • Page 182 Service and Maintenance overloads are factory set to the motor FLA value and contacts will trip and interrupt the control signal to the run should not be adjusted. If the current to the motor exceeds and bypass contactor coils. This will remove power from the overload dial setting value, the overload relay auxiliary the fan motor and stop operation.
  • Page 183 Figure 134, p. 183. Trane or others, refer to the appropriate Figure 134. Typical belt tension gauge manufacturer’s literature for allowable waiting periods for discharge of capacitors. Verify with a CAT III or IV Deflection = Belt Span (in.)
  • Page 184 Service and Maintenance the small O-ring now indicates a value other than zero Note: The actual belt deflection force must not exceed on the force scale. This value represents the force (in the maximum value shown in Table 82, p. 184 pounds) required to deflect the belt(s) the proper 7.
  • Page 185 Anytime a compressor is replaced, the oil for each compressor within the manifold must be replaced. The scroll compressor uses Trane OIL00079 (one quart container) or OIL00080 (one gallon container) without substitution. Discoloration of the oil indicates that an abnormal condition has occurred.
  • Page 186 Service and Maintenance • High superheat Figure 137. CSHE compressor • A compressor mechanical failure • Occurrence of a motor burnout. If a motor burnout is suspected, use an acid test kit (KIT15496) to check the condition of the oil. Test results will indicate an acid level has exceeded the limit if a burnout occurred.
  • Page 187 Service and Maintenance ZPS 2-Stage Compressors Figure 140. Oil injection solenoid valve For 20 and 25 ton systems which use 2-stage unloading scrolls, please follow the same oil removal procedure for VZH088 and VZH117 compressors described in the section above. For adding oil to these manifold sets, an oil refill port is located on the oil equalizer line, as shown in the figure below.
  • Page 188 Up and Down buttons. 5. When the desired selection has been made, press OK . Should replacing the VFD become necessary, the replacement is not configured with all of Trane's operating RT-SVX090C-EN...
  • Page 189 For variable frequency drives parameters listed in will need to be or other energy storing components provided by verified or changed as described in Items Trane or others, refer to the appropriate 3 and 4. manufacturer’s literature for allowable waiting periods •...
  • Page 190 Service and Maintenance Table 85. Supply fan VFD programming parameters Description Parameter Setting Menu Language [0] English US 0-01 Regional Settings [1] North American 0-03 Set to applicable unit power supply [102] 200-240V/60HZ for 208, and 230V/60HZ units Operation [122] 440-480V/60Hz for 460V/60Hz units Display Grid Type 0-06...
  • Page 191 Service and Maintenance Table 85. Supply fan VFD programming parameters (continued) Description Parameter Setting Menu Terminal 18 Digital [0] No Operation 5-10 Input [0] No Operation for FC, single or dual DDP Units w/ Bypass (Digit 17=7, 9, B, D) Terminal 27 Digital Digital In / [2] Coast Inverse for dual DDP Units w/o Bypass (Digit 14= H, J, K, L, M, N, T, V, W, X, Y, Z, &...
  • Page 192 Service and Maintenance Table 86. Value for parameter 4–14 (Motor Speed High Limit) DDP Fans - (Digit # 14 = B thru H, J thru N, P, R, T thru Z) Digit # 2 = A, X Digit # 2 = F Digit # 5,6,7 (Unit Tonnage) (4 Pole) (6 Pole)
  • Page 193 Service and Maintenance Table 87. Relief/return fan VFD parameters (continued) Description Parameter Setting Menu Minimum Reference [22] 22 Hz 3-02 (HZ) Maximum Reference [60] 60 Hz 3-03 (HZ) [11] Local bus reference 3-15 Reference 1 Source Reference / [0] No function 3-16 Reference 2 Source Ramps...
  • Page 194 Service and Maintenance Table 87. Relief/return fan VFD parameters (continued) Description Parameter Setting Menu Switching Frequency [5] 5.0 kHz 14-01 (kHz) Set based on motor nameplate voltage [177] for 208V motor [196] for 230V motor Mains Voltage Fault level [323] for 380V motor [353] for 415V motor 14-11 [391] for 460V motor [489] for 575V motor...
  • Page 195 Service and Maintenance Table 88. Condenser fan VFD parameters (continued) Descriptions Parameter Setting Menu Minimum Reference [6] 6Hz 3-02 (HZ) Maximum Reference [60] 60Hz 3-03 (HZ) [11] Local bus reference 3-15 Reference 1 Source Refer- ence / [0] No function 3-16 Reference 2 Source Ramps...
  • Page 196 4. Adjust the value as shown in . or other energy storing components provided by 5. Press [OK]. Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods Note: Parameter '4-18 Current Limit' for field installed for discharge of capacitors. Verify with a CAT III or IV...
  • Page 197 Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods ☐ Manually rotate the condenser fans to ensure free for discharge of capacitors. Verify with a CAT III or IV movement and check motor bearings for wear.
  • Page 198 Service and Maintenance ☐ Make sure that all retaining screws are reinstalled in the ☐ Use a hand grease gun to lubricate these bearings; add unit access panels once these checks are complete. grease until a light bead appears all around the seal. Do not over lubricate! ☐...
  • Page 199 Trane Parts Center. work downward; then clean the entering-air side of the 4. When cleaning evaporator and reheat coils, mix the coil, starting at the top of the coil and working detergent with water according to the manufacturer’s...
  • Page 200 Service and Maintenance Microchannel Condenser Coil Figure 143. Fall restraint Repair and Replacement If microchannel condenser coil repair or replacement is required, refer to Unitary Light and Large Commercial Units – General Service Bulletin (RT-SVB83*-EN) for further details. FALL RESTRAINT Fall Restraint WARNING Falling Off Equipment!
  • Page 201 Service and Maintenance RT-SVX090C-EN...
  • Page 202 Unit Wiring Diagram Numbers Note: Wiring diagrams can be accessed via e-Library by entering the diagram number in the literature order number search field or by calling technical support. Table 92. Wiring diagram matrix Diagram Number Name 12134353 POWER SCHEMATIC; 20-75T AIRFLOW, WITH BYPASS 12134354 POWER SCHEMATIC;...
  • Page 203 Unit Wiring Diagram Numbers Table 92. Wiring diagram matrix (continued) Diagram Number Name COMPONENT LAYOUT; 20-75T UNIT DEVICE LOCATIONS 12134933 COMPONENT LAYOUT; 90-130T UNIT DEVICE LOCATIONS 12134934 COMPONENT LAYOUT; 20-75T MAIN C-BOX / LOW VOLTAGE PANEL 12134385 COMPONENT LAYOUT; 90-130T MAIN C-BOX / AUX C-BOX 12134386 COMPONENT LAYOUT;...
  • Page 204 Modbus Addressing Tool and Modbus Addresses Modbus Device Addressing 3. Press the Set Address button. If the Modbus address is set, a pop-up indicates the Modbus address was set Modbus Device Addressing allows the user to set and clear successfully. If the Modbus address was not set, a pop the address of Modbus devices via the user interface.
  • Page 205 Modbus Addressing Tool and Modbus Addresses Modbus Address Tool Display Name Modbus Device RTU Address Not Applicable Power Meter 2 Not Applicable Midco Gas Heat EC Condenser Fan 1A Type 1 Condenser Fan 1A EC Condenser Fan 1B Type 1 Condenser Fan 1B EC Condenser Fan 1C Type 1 Condenser Fan 1C...
  • Page 206 In no event shall the Company be liable for PRODUCTS COVERED - This warranty* is extended by any incidental or consequential damages. Trane Inc. and applies only to commercial equipment rated THE WARRANTY AND LIABILITY SET FORTH HEREIN 20 Tons and larger and related accessories.
  • Page 207 Notes RT-SVX090C-EN...
  • Page 208 For more information, please visit trane.com or tranetechnologies.com. Trane has a policy of continuous product and product data improvements and reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.