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

Trane IntelliPak SAHL Series Installation, Operation And Maintenance Manual

Commercial single-zone rooftop air conditioners with cv, vav, or szvav controls
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Installation, Operation,
and Maintenance
IntelliPak™
Commercial Single-Zone Rooftop Air Conditioners
with CV, VAV, or SZVAV Controls
"A" and later Design Sequence
SAHL
SEHL, SFHL, SLHL, SSHL, SXHL
SXHK, SEHK, SFHK, SLHK, SSHK
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.
October 2011
*20, *25, *30, *40, *50, *55, *60, *70, *75
*20, *25, *30, *40, *50, *55, *60, *70, *75,
*24, *29, *36, *48, *59, *73, *80, *89
*90, *11, *12, *13
SAFETY WARNING
RT-SVX36G-EN

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Summary of Contents for Trane IntelliPak SAHL Series

  • Page 1 Installation, Operation, and Maintenance IntelliPak™ Commercial Single-Zone Rooftop Air Conditioners with CV, VAV, or SZVAV Controls “A” and later Design Sequence SAHL *20, *25, *30, *40, *50, *55, *60, *70, *75 SEHL, SFHL, SLHL, SSHL, SXHL *20, *25, *30, *40, *50, *55, *60, *70, *75, *24, *29, *36, *48, *59, *73, *80, *89 SXHK, SEHK, SFHK, SLHK, SSHK *90, *11, *12, *13...
  • Page 2 CFCs such as HCFCs and HFCs. Responsible Refrigerant Practices! Trane believes that responsible refrigerant practices are important to the environment, our customers, and the air conditioning industry. All technicians who handle refrigerants must be certified. The Federal Clean Air Act (Section 608) sets forth the requirements for handling, reclaiming, recovering and recycling of certain refrigerants and the equipment that is used in these service procedures.

  • Page 3: Unit Nameplate

    Warnings, Cautions and Notices WARNING Personal Protective Equipment (PPE) Required! Installing/servicing this unit could result in exposure to electrical, mechanical and chemical hazards. • Before installing/servicing this unit, technicians MUST put on all Personal Protective Equipment (PPE) recommended for the work being undertaken. ALWAYS refer to appropriate MSDS sheets and OSHA guidelines for proper PPE.

  • Page 4: Overview Of Manual

    Warnings, Cautions and Notices • Avoid contact with the skin or eyes. Wear long-sleeved, loose-fitting clothing, gloves, and eye protection. • Wash clothes separately from other clothing: rinse washer thoroughly. • Operations such as sawing, blowing, tear-out, and spraying may generate fiber concentrations requiring additional respiratory protection.

  • Page 5: Storage

    Note: Do not use the unit's heater for temporary heat without first completing the startup procedure detailed under “Starting the Unit” . Trane will not assume any responsibility for equipment damage resulting from condensate accumulation on the unit's electrical and/or mechanical components.

  • Page 6: Table Of Contents

    Pitch Pocket Location ......... 44 If a Trane Curb Accessory Kit is Not Used: ......45 Unit Rigging &...
  • Page 7 Requirements for Modulating Reheat Dehumidification ... . . 50 Condensate Drain Connections ....... . . 50 O/A Sensor &...
  • Page 8 Limited Modulating Gas Furnace ....... 161 Final Unit Checkout ......... . 163 Startup Checklists .

  • Page 9: Model Number Descriptions

    Model Number Descriptions S A H L * 5 0 4 0 A 0 W 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 K = 100% Exhaust 15 HP w/o Statitrac DIGIT 1 - UNIT TYPE DIGIT 9 - HEATING CAPACITY...
  • Page 10 E = 1400 RPM Interface (BCI) Module DIGITS 21 - 38 - 9 = 900 RPM F = 1500 RPM Y = Trane Communication Interface MISCELLANEOUS A = 1000 RPM (TCI) Module 21 A = Unit Disconnect Switch = Trane LonTalk Communication...
  • Page 11 Model Number Descriptions S X H K * 1 1 4 0 A H 8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 DIGIT 1 - UNIT TYPE DIGIT 11 - EXHAUST/RETURN DIGIT 17 - SYSTEM CONTROL...
  • Page 12 = Access Doors 33 V = Inter-Processor Communication Bridge 34 W = BCI with Wireless Communications Interface (WCI) Y = Trane Communication Interface (TCI) Module 34 M = BACnet Communication Interface (BCI) Module 34 7 = Trane LonTalk Communication Interface (LCI) Module...

  • Page 13: General Information

    An optional roof curb, specifically designed for the S_HL units is available from Trane. The roof curb kit must be field assembled and installed according to the latest edition of the curb installation guide.

  • Page 14: Compressor Modules

    General Information Table 1. RTM Resistance Input vs. Setpoint Temperatures RTM cooling or heating RTM cooling setpoint input setpoint input used used as the source as the source for for SUPPLY AIR temp Resistance (Ohms) Max. a ZONE temp setpoint (°F) setpoint cooling (°F) Tolerance 5% 1084...

  • Page 15: Modulating Dehumidification Module Mdm

    Building Automation Systems) The LonTalk or BACnet Communication Interface modules expand communications from the unit UCM network to a Trane Tracer Summit or a 3rd party building automation system and allow external setpoint and configuration adjustment and monitoring of status and diagnostics.

  • Page 16: Ventilation Control Module

    General Information Figure 1. Humidity vs. Voltage Ventilation Control Module The Ventilation Control Module (VCM) is located in the filter section of the unit and is linked to the unit's UCM network. Using a “velocity pressure” sensing ring located in the fresh air section, allows the VCM to monitor and control the quantity of fresh air entering the unit to a minimum airflow setpoint.

  • Page 17: Generic Building Automation System Module

    General Information Figure 2. Velocity Pressure Transducer/Solenoid Assembly Generic Building Automation System Module (GBAS - Optional 1U51 used with non-Trane building control systems; 0-5 or 0-10 VDC) The Generic Building Automation System (GBAS) module allows a non-Trane building control system to communicate with the rooftop unit and accepts external setpoints in form of analog inputs for cooling, heating, supply air pressure, and a binary Input for demand limit.

  • Page 18: Constant Volume (Cv), Single Zone Variable Air Volume (Szvav) & Variable Air Volume (Vav) Sensors And Controls

    General Information Constant Volume (CV), Single Zone Variable Air Volume (SZVAV) & Variable Air Volume (VAV) Sensors and Controls Supply Air Temperature Sensor (3RT9) This an analog input device monitors the supply air temperature for; supply air temperature control (used with discharge temperature control), supply air temperature reset (used with discharge temperature control), supply air temperature low limiting (used with discharge temperature control), supply air tempering.
  • Page 19 General Information Lead-Lag Is a selectable mode of operation on 20 thru 130 Ton units within the Human Interface. It alternates the starting between the first compressor of each refrigeration circuit. On 40 - 89 Ton units only the compressor banks will switch, not the order the compressors within a bank, providing the first compressor in each circuit had been activated during the same request for cooling.
  • Page 20 General Information Head Pressure Control This is accomplished using two saturated refrigerant temperature sensors. During a request for compressor operation, when the condensing temperature rises above the “lower limit” of the control band, the Compressor Module (SCM/MCM) starts sequencing condenser fans “On” . If the operating fans can not bring the condensing temperature to within the control band, more fans are turned on.
  • Page 21 General Information a. diagnostic and mode status signals to the remote panel (LEDs) and to the Human Interface. b. control of the binary Alarm output on the RTM. c. control of the binary outputs on the GBAS module to inform the customer of the operational status and/or diagnostic conditions.

  • Page 22: Constant Volume (Cv) Units

    Initiates a “Freezestat” diagnostic to the Human Interface. High Duct Temp Thermostats (Optional 3S16, 3S17) These are binary input devices used with a Trane Communication Interface Module (TCI). They provide “high limit” shutdown of the unit and requires a manual reset. They are factory set to open if the supply air temperature reaches 240°F , or the return air temperature reaches 135°F .

  • Page 23: Single Zone Variable Air Volume (Szvav) Only

    General Information Zone Temperature - Heating Relies on input from a sensor located directly in the space, while a system is in the occupied “Heating” mode or an unoccupied period, to stage the heat “on and off” or to modulate the heating valve (hydronic heat only) as required to maintain the zone temperature to within the heating setpoint deadband.
  • Page 24 General Information The Exhaust Enable Target could be above or below the Active Building Design OA Minimum Position Target Setpoint, based on the Active Exhaust Enable Setpoint being set above or below the Building Design Minimum Position at 100% Fan Speed Command. Note that an Exhaust Enable Setpoint of 0% will result in the same effect on Exhaust Fan control as on VAV applications with and without Statitrac.

  • Page 25: Constant Volume (Cv), Single Zone Variable Air Volume (Szvav), & Variable Air Volume (Vav) Units

    General Information (as described below) until the discharge air target setpoint value is calculated below the discharge air temperature Minimum Setpoint (limited discharge air target setpoint). As the cooling load in the zone decreases the zone cooling algorithm will reduce the speed of the fan down to minimum per compressor stage and control the compressors accordingly.

  • Page 26: Single Zone Variable Air Volume (Vav) Units

    General Information Supply Duct Static Pressure Control (Occupied) The RTM relies on input from the duct pressure transducer when a unit is equipped with or a Variable Frequency Drive to position to set the supply fan speed to maintain the supply duct static pressure to within the static pressure setpoint deadband.
  • Page 27 General Information terminate setpoint, the heat will turn off when the occ zone heat setpoint is reached, but it will stay in DWU mode and cycle the heat to maintain setpoint. Unoccupied Heating - Zone Temperature When a Discharge Temperature Control unit is equipped with gas, electric, or hydronic heat and is in the unoccupied mode, the zone temperature will be controlled to within the customers specified setpoint deadband.

  • Page 28: Space Temperature Averaging

    General Information Figure 4. Unit Component Layout and "Ship with" Locations Space Temperature Averaging Space temperature averaging for Constant Volume applications is accomplished by wiring a number of remote sensors in a series/parallel circuit. The fewest number of sensors required to accomplish space temperature averaging is four. The Space Temperature Averaging with Multiple Sensors figure illustrates a single sensor circuit (Single Zone), four sensors wired in a series/parallel circuit (Four Zone), nine sensors wired in a series/parallel circuit (Nine Zone).
  • Page 29 General Information Figure 5. Space Temperature Averaging Space Temperature Averaging with Multiple Sensors Unit Control Modules (UCM) Unit control modules are microelectronic circuit boards designed to perform specific unit functions. These modules through Proportional/Integral control algorithms provide the best possible comfort level for the customer. They are mounted in the control panel and are factory wired to their respective internal components.
  • Page 30 General Information Figure 6. Control Module Locations for S_HL, 20-36 Ton Units Figure 7. Control Module Locations for S_HL 40 - 89 Ton Units RT-SVX36G-EN...

  • Page 31: Installation

    Note: Do not use the unit's heater for temporary heat without first completing the startup procedure detailed under “Starting the Unit” . Trane will not assume any responsibility for equipment damage resulting from condensate accumulation on the unit's electrical and/or mechanical components.
  • Page 32 Installation Unit Clearances Figure 8 illustrates the minimum operating and service clearances for either a single or multiple unit installation. These clearances are the minimum distances necessary to assure adequate serviceability, cataloged unit capacity, and peak operating efficiency. Providing less than the recommended clearances may result in condenser coil starvation, “short- circuiting”...
  • Page 33 Installation Figure 8. Minimum operation and service clearances for single and multiple unit installation Single Unit Installation Legend Return Air Opening Fresh Air Intake Supply Air Opening Condenser Section Optional 2’10-3/4” Exhaust/Return Access Door (180° swing) Hinged 2’10-3/4” Filter Access Door (180° swing) Hinged 2’10-3/4”...
  • Page 34 Installation Figure 9. SAHL cooling-only units (20 - 75) Use Table Table 5 Table 6 1” CONDENSATE DRAIN CONNECTION (Both Sides) Table 4. Unit dimensional data Dimensions Unit Size 20 & 25 Ton 21’-9 3/4” 6’-9” 7'-6 1/2" 7’-3 1/4” 3'-9 5/16"...
  • Page 35 Installation Table 5. Unit base dimensional data Dimensions w/exhaust w/return exhaust return w/exhaust w/return Unit Size 20 - 30 Ton 14'-0 1/4" 2'-2 1/2" 11 3/4" 5'-7" 3'-4 3/8" 2'-9 15/16” 5 13/16" 28 5/8” 6'-6 15/16" 40 - 50 Ton 16'-1 13/16”...
  • Page 36 Installation Figure 10. SEHL, SFHL, SLHL, SSHL, SXHL units (20 - 89 ton) Use Table Table 8 Table 1” NPT CONDENSATE DRAIN CONNECTION (Both Sides) DRAIN HOLE Table 7. Unit Dimensional Data Air-Cooled Unit Dimensions Unit Size 20 & 25 Ton 24'-1 3/8" 6’-9”...
  • Page 37 Installation Table 7. Unit Dimensional Data Evaporative Condensing Unit Dimensions Unit Size 48 Ton 32’-10 1/2” 6’-9” 7’-6 1/2” 8’-4 3/4” 5’-9 5/16” 15’-11 1/8” 1" 8” 2'-5" 19'-7" 8 1/8" 6 1/4" 9" Note 59 Ton 32’-10 1/2” 6’-9” 7’-6 1/2”...
  • Page 38 Installation Figure 11. Evaporative condenser water connection locations Drain Connection Water Supply Connection 1 1/4” PVC, Female 3/4” PVC, Female 19.84 8.16 Drain Connection Inlet Water Connection Tons (EC) 24, 29 & 36 Ton 60.03 79.31 12.01 12.94 48 & 59 Ton 82.86 102.14 12.01...
  • Page 39 Installation Table 9. Electrical entrance data Dimensions Unit Size (AC/EC) 20, 25 & 30 Ton 8 7/32" 6 31/32" 15 21/32" 13 21/32" 9 17/32" 8 1/2" 18 1/16" 19 9/16" 40-75 / 24-89 Ton 8 15/16” 7 15/16” 17 7/8" 15 7/8"...
  • Page 40 Installation Figure 12. S_HK cooling and heating units (90-130 ton) (See CPVC Dimensional Table) RT-SVX36G-EN...
  • Page 41 Installation Figure 13. Center of gravity data Table 11. Center of gravity data Units without 100% Units with Units with Supply & Exhaust/Return Fan Exhaust/Return Fan Exhaust/Return VFD Unit Model Unit Size Dim. A Dim. B Dim. A Dim B. Dim.
  • Page 42 XL, high heat. 2. Weights shown represent approximate operating weights and have a ±5% accuracy. To calculate weight for a specific unit configuration, utilize TOPSS™ or contact the local Trane sales representative. ACTUAL WEIGHTS ARE STAMPED ON THE UNIT NAMEPLATE. RT-SVX36G-EN...
  • Page 43 2. Weights shown represent approximate operating weights and have a ±5% accuracy. To calculate weight for a specific unit configuration, utilize TOPSS or contact the local Trane sales representative. ACTUAL WEIGHTS ARE STAMPED ON THE UNIT NAMEPLATE. Table 14. Roof curb max weight Roof Curb Max.

  • Page 44: Pitch Pocket Location

    4. Insure that the curb is level and square. The top surface of the curb must be true to assure an adequate curb-to-unit seal. Step-by-step curb assembly and installation instructions ship with each Trane accessory roof curb kit. Follow the instructions carefully to assure proper fit-up when the unit is set into place.

  • Page 45: If A Trane Curb Accessory Kit Is Not Used

    • Trane roof curbs are recommended. If using a non-Trane roof curb with right-angle return airflow approaches to a return fan inlet, a rigid, solid flow baffle wall should be installed across the full width of the roof curb return airflow path in the position shown in Figure 15, p.

  • Page 46: Unit Rigging & Placement

    Installation Figure 15. Solid flow baffle wall installation for non-Trane roof curbs Return Fan Roof Curb Flow Baffle Return Airflow Return Airflow Duct Unit Rigging & Placement WARNING Heavy Objects! Ensure that all the lifting equipment used is properly rated for the weight of the unit being lifted.
  • Page 47 Installation Figure 16. Unit rigging Figure 17. Typical unit base and roof curb cross section RT-SVX36G-EN...

  • Page 48: General Unit Requirements

    It does not replace the detailed instructions called out in the applicable sections of this manual. • Check the unit for shipping damage and material shortage; file a freight claim and notify Trane office. • Verify that the installation location of the unit will provide the required clearance for proper operation.

  • Page 49: Requirements For Electric Heat Units

    Installation Requirements for Electric Heat Units All SEHL Units (380 minimum voltage). • Verify that the power supply complies with the electric heater specifications on the unit and heater nameplate. • Inspect the heater junction box and control panel; tighten any loose connections. •...

  • Page 50: Requirements For Modulating Reheat Dehumidification

    Installation Requirements for Modulating Reheat Dehumidification • Install (5U108) humidity sensor in space or return duct • Complete field wiring of humidity sensor to ECEM (1TB16). Refer to “Field Installed Control wiring” for guidelines. Figure 18. Condensate Drain Locations Sloped Drain Pan Option (2) condensate drain openings both sides Note:...
  • Page 51 Installation An additional 1-1/4” non-connectable water drain is located in the base rail within the heating section. Ensure that all condensate drain line installations comply with applicable building and waste disposal codes. Figure 19. Condensate Trap Installation Removing Supply and Exhaust/Return Fan Shipping Channels (Motors >5Hp) Each supply fan assembly and exhaust fan assembly for S_HL units shipped with a motor larger than 5 HP is equipped with rubber isolators (as standard) or optional spring isolators.
  • Page 52 Installation Figure 20. Removing Supply and Exhaust Fan Assembly Shipping Hardware (20-89 Ton) Figure 21. Removing Return Fan Assembly Shipping Hardware (20-89 Ton) RT-SVX36G-EN...

  • Page 53: O/A Sensor & Tubing Installation

    Installation Figure 22. Removing supply and exhaust fan assembly shipping hardware (90-130 Ton) O/A Sensor & Tubing Installation An Outside Air Pressure Sensor is shipped with all units designed to operate on variable air volume applications, units equipped with a return fan, or constant volume units with 100% modulating exhaust w/Statitrac.

  • Page 54: Remove Evaporative Condenser Fan Shipping Brackets

    Installation 2. Using two #10-32 x 1-3/4” screws provided, install the sensor's mounting bracket to the factory installed bracket (near the filter section). 3. Using the #10-32 x 1/2” screws provided, install the O/A static pressure sensor vertically to the sensor bracket.

  • Page 55: Evaporative Condenser Make-Up Water And Drain Line Installation

    Installation Evaporative Condenser Make-up Water and Drain Line Installation Make-up Water and Drain Lines Water Supply Source The supply line should be designed to provide a minimum supply of water within customary domestic supply pressures, 35 to 60 psig; dynamic pressure (measured with the valve open) which will allow approximately 30 GPM to enter the sump through the makeup water valve, when the sump is empty.
  • Page 56 Installation Figure 23. Pressure sensing Outside Air Sensing Kit Duct, Space and Return Plenum Pressure Transducer Tubing Schematic Return Plenum Transducer Sensing Tube to Return Plenum Duct and Space Static Pressure Return Fan Plenum Pressure Control Component Layout Control Component Layout If equipped with Return Fan and Statitrac, Statitrac Static Reference Tubing Connects here...

  • Page 57: Gas Heat Units (Sfh_)

    Installation Gas Heat Units (SFH_) All internal gas piping is factory-installed and pressure leak-tested before shipment. Once the unit is set into place, the gas supply line must be field-connected to the elbow located inside the gas heat control compartments. WARNING Hazardous Gases and Flammable Vapors! Exposure to hazardous gases from fuel substances have been shown to cause cancer, birth...
  • Page 58 Installation Note: Do not rely on the gas train shutoff valves to isolate the unit while conducting gas pressure/ leak test. These valves are not designed to withstand pressures in excess of 14" w.c. or 0.5 psig. Connecting the Gas Supply Line to the Furnace Gas Train Follow the steps below to complete the installation between the supply gas line and the furnace.
  • Page 59 Installation Table 18. Modulating Gas Heat Settings Natural Gas Full Modulation Partial Modulation Valve Actuator Air Damper Air Damper Actuator Voltage Actuator Voltage Left (Coarse) Right (Fine) Heater Size (MBH) Gas Orifice Range (VDC) Range (VDC) Setting Setting 7 - 10 7 - 9.7 6 - 10 6 - 8.7...
  • Page 60 Installation Figure 25. Unit Gas Trains (Natural Gas) 500 and 850 MBH Figure 26. Unit Gas Trains (Natural Gas) 1000 MBH RT-SVX36G-EN...

  • Page 61: Flue Assembly Installation

    Installation Figure 27. Modulating 500 - 1000 MBH Pilot Shutoff Valve Pilot Shutoff Valve Burner Nozzle Burner Nozzle Pilot Solenoid Valve Pilot Solenoid Valve Pilot Regulator Valve Pilot Regulator Valve Pilot Shutoff Valve Pilot Shutoff Valve Modulating Gas Valve Modulating Gas Valve Shutoff Valve Shutoff Valve Flue Assembly Installation...

  • Page 62: Hot Water Heat Units (Slh_)

    Installation Figure 28. Flue Assembly Hot Water Heat Units (SLH_) Hot water heating coils are factory installed inside the heater section of the unit. Once the unit is set into place, the hot water piping and the factory provided three way modulating valve must be installed.

  • Page 63: Steam Heat Units (Ssh_)

    Installation 7. Install the 3-way valve in an upright position, piped for valve seating against the flow. Ensure that the valve's location lends itself to serviceability. 8. The Type “W” hot water coil used in SLHL units is self-venting only when the tube water velocity exceeds 1.5 feet per second (fps).
  • Page 64 Installation 6. Install a 1/2” 15 degree swing-check vacuum breaker at the top of the return coil header using the tapped pipe connection. Position the vacuum breaker as close to the coil as possible. Note: Vacuum breakers should have extended lines from the vent ports to the atmosphere or connect each vent line to the return pipe on the discharge side of the steam traps.
  • Page 65 Installation Figure 30. Hot Water Piping (90 - 130 Ton) Figure 31. Steam Coil Piping (20 - 36 Ton) RT-SVX36G-EN...

  • Page 66: Disconnect Switch External Handle

    Installation Figure 32. Steam Coil Piping (40 - 130 Ton) Disconnect Switch External Handle (Factory Mounted Option) Units ordered with the factory mounted disconnect switch comes equipped with an externally mounted handle. This allows the operator to disconnect power from the unit without having to open the control panel door.
  • Page 67 Installation An overall layout of the field required power wiring is illustrated in Figure 34. To ensure the unit's supply power wiring is properly sized and installed, follow the guidelines outlined below. Figure 33. Disconnect Switch Handle Positions Note: All field installed wiring must conform to NEC guidelines as well as State and Local codes. WARNING Live Electrical Components! During installation, testing, servicing and troubleshooting of this product, it may be necessary...

  • Page 68: Electric Heat Units (Seh_)

    Installation Electric Heat Units (SEH_) WARNING Proper Field Wiring and Grounding Required! All field wiring MUST be performed by qualified personnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow requirements for field wiring installation and grounding as described in NEC and your local/state electrical codes.
  • Page 69 Installation non-fused disconnect switch 1S14, inside the unit control panel. Refer to the customer connection diagram that shipped with the unit for specific termination points. 3. Provide proper grounding for the unit in accordance with local and national codes. Figure 34. Typical Field Power Wiring (20 - 89 Ton) RT-SVX36G-EN...
  • Page 70 Installation Figure 35. Typical Field Power Wiring (90 - 130 Ton) Figure 36. Customer Connection Wire Range RT-SVX36G-EN...
  • Page 71 Installation Table 21. Compressor electrical service sizing data (20 - 130 ton) 200V 230V 460V 575V No. of Tonnage (AC/EC) Compressors 20 (Std) 41.4 35.5 18.6 15.8 20/24 (Hi) 41.4 35.5 18.6 15.8 41.4 35.5 18.6 15.8 25 (Std) 42.3 20.2 17.1 41.4...
  • Page 72 Installation Table 22. Electrical service sizing data — motors — 20-130 tons Nominal Voltage Nominal Tons Air-Cooled Condenser Fan Motor 12.3 12.3 12.3 12.3 16.4 16.4 50, 55 24.6 24.6 10.8 24.6 24.6 10.8 24.6 24.6 10.8 24.6 24.6 10.8 14.4 11.2 18.0...
  • Page 73 Installation Table 23. Electrical service sizing data —electric heat module (electric heat units only) — 20-130 tons Voltage Module kW 83.3 72.2 36.1 28.9 138.8 120.3 60.1 48.1 194.3 168.4 84.2 67.4 249.8 216.5 108.3 86.6 305.3 264.6 132.3 105.9 156.4 125.1 180.4...

  • Page 74: Power Wire Sizing And Protection Device Equations

    Installation Table 27. Voltage utilization range Voltage Unit Voltage Utilization Range 200/60/3 180-220 230/60/3 207-253 380/50/3 342-418 415/50/3 373-457 460/60/3 414-506 575/60/3 517-633 Power Wire Sizing and Protection Device Equations To correctly size the main power wiring for the unit, use the appropriate calculation(s) listed below. Read the load definitions that follow and use Calculation #1 for determining the MCA (Minimum Circuit Ampacity), MOP (Maximum Over current Protection), and RDE (Recommended Dual Element fuse size) for SAH_ (Cooling Only) units, SXH_ (Extended Casing) units, SLH_ and SSH_...
  • Page 75 Installation To arrive at the correct MCA, MOP , and RDE values for these units, you must perform two sets of calculations. First calculate the MCA, MOP , and RDE values as if the unit was operating in the cooling mode (use the equations given in Calculation #1 above). Then calculate the MCA, MOP , and RDE values as if the unit was operating in the heating mode as follows.

  • Page 76: Field Installed Control Wiring

    Installation PLUS DSS = 1.15 X (LOAD 1 + LOAD 2 + LOAD 4) Use the larger value of the two calculations to size the electrical service. • Calculation #3 - SEHL (200/230 Volt) 20 - 75 Ton Dual Power Source Units DSS = 1.15 X LOAD3 for the Electric heater AND Calculation #1 for the Refrigeration Components Field Installed Control Wiring WARNING...

  • Page 77: Controls Using Dc Analog Input/Outputs

    3. Do not run the electrical wires transporting DC signals in or around conduit housing high voltage wires. Units equipped with a Trane Communication Interface (TCI), BACnet Communication Interface (BCI), or LonTalk communication Interface (LCI) option which utilizes a serial communication link;...
  • Page 78 Table 30 for the Temperature vs. Resistance coefficient. Remote Zone Sensor (BAYSENS074*) This electronic analog sensor features single setpoint capability and timed override with override cancellation. It is used with a Trane Integrated Comfort system. Refer to Table 30 for the Temperature vs.
  • Page 79 Installation The DIP switches on the subbase are used to enable or disable applicable functions, i.e.; Morning Warm-up, Economizer minimum CFM override during unoccupied status, Fahrenheit or Centigrade, Supply air tempering, Remote zone temperature sensor, 12/24 hour time display, Smart fan, and Computed recovery. During an occupied period, an auxiliary relay rated for 1.25 amps @ 30 volts AC with one set of single pole double throw contacts is activated.
  • Page 80 Installation – Supply fan - OFF – Inlet Vanes/VFD - 0% (if equipped) – Exhaust/Return fan - ON, Exhaust/Return dampers - Open – O/A dampers - Closed – Heat - All stages OFF , Modulating Heat output at 0 VDC –...
  • Page 81 Installation Emergency Override Definitions (with LCI-I/BCI-I module installed) When an LCI-I/BCI-I module is installed, the user can initiate one of five (5) Emergency Override sequences that have the following predefined unit operation: PRESSURIZE – Supply Fan - On – Inlet Vanes - Open (if equipped) –...
  • Page 82 Installation – Exhaust/Return Dampers - Closed (if equipped) – OA Dampers - Closed – Heat - All heat stages Off (staged gas and elec.), Hydronic – Heat & Mod Gas Heat output at 0%. – Occupied/Unoccupied output - De-energized – VO Relay - Energized (with VOM module installed) –...
  • Page 83 Generic Building Automation System Module (GBAS 0-10 VDC) - Used to provide broad control capabilities for building automation systems other than Trane's Tracer system. The GBAS module provides a binary input for Demand Limiting, four (4) analog inputs for setpoint adjustment and four (4) analog outputs as well as one (1) relay output for diagnostic reporting.
  • Page 84 Installation Figure 37. Typical ventilation override binary output wiring diagram for 20-89 ton CV control options. Refer to wiring notes on Figure RT-SVX36G-EN...
  • Page 85 Installation Figure 37. (continued from previous page) Typical ventilation override binary output wiring diagram for 20-89 ton CV control options. Refer to wiring notes on Figure RT-SVX36G-EN...
  • Page 86 Installation Figure 38. Field connection diagram notes for 20 - 89 ton CV or VAV applications RT-SVX36G-EN...
  • Page 87 Installation Figure 39. Typical field wiring diagram for 20-89 ton VAV control option 2307-9177 RT-SVX36G-EN...
  • Page 88 Installation Figure 40. Typical field wiring diagram for 20-89 ton VAV control option RT-SVX36G-EN...
  • Page 89 Installation Figure 41. Typical GBAS analog input wiring diagram for 20-89 ton CV & VAV control options RT-SVX36G-EN...
  • Page 90 Installation Table 31. GBAS Voltage vs. Setpoint Setpoint GBAS 0-5 VDC GBAS 0-10 VDC Valid Range Occ Zone Cooling Setpoint(CV only) 0.5 to 4.5 VDC 0.5 to 9.5 VDC 50 to 90°F Unocc Zone Cooling Setpoint 0.5 to 4.5 VDC 0.5 to 9.5 VDC 50 to 90°F Occ Zone Heating Setpoint(CV only)

  • Page 91: Installation Checklist

    Completed General Unit Requirements Check the unit for shipping damage and material shortage; file a freight claim and notify Trane office. Verify that the installation location of the unit will provide the required clearance for proper operation. Assemble and install the roof curb per the current edition of the curb installation guide.
  • Page 92 Setup drain hold or drain on power loss Setup Mechanical Float Setup drain time Setup water quality management (3rd party or Trane factory-installed Dolphin Water Care™ System) Options setup Calibrate Conductivity Controller Setup blowdown set points on the conductivity sensor...

  • Page 93: Unit Start Up

    Unit Start Up Cooling Sequence of Operation Time delays are built into the controls to increase reliability and performance by protecting the compressors and maximizing unit efficiency. NOTICE: Compressor Failure! Unit must be powered and crankcase heaters energized at least 8 hours BEFORE compressors are started.
  • Page 94 Unit Start Up 1. 2-Stage DX Cooling - The minimum fan speed for units with 2 stages of DX Cooling will be 37% of the unit’s full airflow capacity. At Stage 1 of DX Cooling the minimum Fan Speed will be 37% and at Stage 2 of DX Cooling the Fan Speed will be at a minimum of 67%.
  • Page 95 Unit Start Up When a cooling request is sent to the RTM from a zone temperature sensor, the RTM evaluates the operating condition of the system using the supply air temperature input and the outdoor temperature input before sending the request to the SCM/MCM. Once the request is sent to the SCM/MCM, the compressor module checks the compressor protection circuit before closing “Stage 1”...
  • Page 96 Unit Start Up decreases, the effective (reset) setpoint value is adjusted downward toward the minimum outside air CFM setpoint. Figure 43. CO Reset Low Charge Protection For each refrigeration circuit, the entering and leaving evaporator temperatures are used to calculate superheat. When the calculated superheat exceeds the Evaporator Temperature Differential Setpoint minus 5°F but not the Evaporator Temperature Differential Setpoint, an information only, auto-reset, High Superheat diagnostic is initiated.
  • Page 97 Unit Start Up Units with Evaporative Condenser Sequence of Operation Upon a power up without water in the sump, the condenser sump drain will be controlled to allow the sump to hold water. The fill relay will be energized if there is a call for mechanical cooling and if the outdoor air temperature is greater than 10°F on units with a sump heater installed or greater than 40°F on units without sump heat.
  • Page 98 Unit Start Up solenoid valve closed. If the minimum water level switch opens during a blowdown cycle, the unit will de-energize the sump pump in order to protect the compressors and sump heater from insufficient water levels. Once the water level reaches the minimum level input and this input closes for 10 seconds, the compressors and sump heater operations will be allowed to restart.
  • Page 99 Unit Start Up Figure 45. Actuator shaft adapter removal/assembly Locking clip Shaft adapter Figure 46. Actuator is shipped in “drain during power loss” configuration To drain during power loss, To hold during power loss, set shaft adapter to 0 degrees set shaft adapter to 90 degrees Set Drain Duration Timer Enter service test mode from unit Human Interface.
  • Page 100 Chemical Water Treatment Tree Figure 47. Chemical Water Treatment Tree The Trane evaporative condenser comes with a PVC tree to allow easier inputs for third party water treatment. The tee labeled A is a ¾ inch NPT threaded input, see Figure 47.
  • Page 101 Unit Start Up • Using the UP and DOWN arrows go to Chan 1 Cell: Standard. Ensure this channel is set to standard • If not press the RIGHT arrow key and set to standard then press the ENTER key to return to the CALIBRATION menu •...
  • Page 102 Unit Start Up Gas Heating Sequence of Operation Standard Two Stage Gas Furnace The control system for the rooftop units are wired to ensure that the heating and cooling do not occur simultaneously. Refer to the wiring diagram that shipped with the unit while reviewing the following sequence of operation.

  • Page 103: Modulating Gas Sequence Of Operation-Full And Limited Modulating Gas Furnace

    Unit Start Up Modulating Gas Sequence of Operation—Full and Limited Modulating Gas Furnace The control system for the rooftop units are wired to ensure that the heating and cooling do not occur simultaneously. Refer to the modulating heat wiring diagram that shipped with the unit while reviewing the following sequence of operation.

  • Page 104: Wet Heat Sequence Of Operation

    Unit Start Up Electric Heat Sequence of Operation The control system for the rooftop units are wired to ensure that the heating and cooling do not occur simultaneously. Refer to the electric heat wiring diagrams that shipped with the unit while reviewing the following sequence of operation.
  • Page 105 Unit Start Up WARNING Hazardous Voltage! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury. •...

  • Page 106: Voltage Supply And Voltage Imbalance

    Unit Start Up The compressor motor is internally connected for clockwise rotation with the incoming power supply phased as A, B, C. Proper electrical supply phasing can be quickly determined and corrected before starting the unit by using an instrument such as an Associated Research Model 45 Phase Sequence Indicator and following the steps below: WARNING Hazardous Voltage!
  • Page 107 Unit Start Up Voltage Imbalance Excessive three phase voltage imbalance between phases will cause motors to overheat and eventually fail. The maximum allowable voltage imbalance is 2%. Measure and record the voltage between phases 1, 2, and 3 and calculate the amount of imbalance as follows: 100 X AV - VD where;...
  • Page 108 Unit Start Up RT-SVX36G-EN...
  • Page 109 Unit Start Up RT-SVX36G-EN...
  • Page 110 Unit Start Up RT-SVX36G-EN...
  • Page 111 Unit Start Up Table 36. Service test guide for component operation — Part II of II Component Configuration Component Sump Sump Econo Exhaust Unocc Reheat Dolphin Being Tested Pump Heater Damper Damper Output Relay COMPRESSOR 20 - 30 Ton Closed Closed Default Closed...
  • Page 112 Unit Start Up Table 36. Service test guide for component operation — Part II of II (continued) Component Configuration Component Sump Sump Econo Exhaust Unocc Reheat Dolphin Being Tested Pump Heater Damper Damper Output Relay Closed Closed 100% Unocc GAS HEAT (Full Capacity) Closed Closed...

  • Page 113: Verifying Proper Fan Rotation

    Unit Start Up Verifying Proper Fan Rotation WARNING Hazardous Service Procedures! The maintenance and troubleshooting procedures recommended in this manual could result in exposure to electrical, mechanical or other potential safety hazards. Always refer to the safety warnings provided throughout this manual concerning these procedures. Unless specified otherwise, disconnect all electrical power including remote disconnect and discharge all energy storing devices such as capacitors before servicing.

  • Page 114: System Airflow Measurements

    Unit Start Up c. Interchange any two of the field connected main power wires at the unit terminal block 1TB1 or the factory mounted disconnect switch 1S14. Note: Interchanging “Load” side power wires at the fan contactors will only affect the individual fan rotation.
  • Page 115 Unit Start Up Figure 48. Condenser fan location with human interface designator 20 Tons 25-30 Tons 40 Tons 50 Tons 60-75 Tons 5. Use Table 35, p. 108 to program the Supply Fan for operation by scrolling through the displays. 6.

  • Page 116: Exhaust Airflow Measurement (Optional With All Units)

    Unit Start Up WARNING Live Electrical Components! During installation, testing, servicing and troubleshooting of this product, it may be necessary to work with live electrical components. Have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks.

  • Page 117: Traq Sensor Airflow Measurement (Optional With All Units Equipped With An Economizer)

    Unit Start Up 3. Open the Human Interface access door, located in the unit control panel, and press the SERVICE MODE key to display the first service screen. Refer to the latest edition of the appropriate programming manual for CV or VAV applications for the SERVICE TEST screens and programming instructions.

  • Page 118: Return Plenum Pressure Control (Units Equipped With Return Fan)

    Unit Start Up – Variable Frequency Drive (100% Output, if applicable) – RTM Occ/Unocc Output (Unoccupied) – Outside Air CFM Setpoint – Outside Air Pre-Heater Operation (if applicable) 3. Once the configuration for the components is complete, press the NEXT key until the LCD displays the “Start test in __Sec.

  • Page 119: Fan Performance Tables

    Unit Start Up Fan Performance Tables Figure 49. 20 & 25 / 24 & 29 Ton supply fan performance S_HL*20 & 25, 24 & 29 Ton 1700 RPM Dual 15 X 15 Fans Entrance Losses - without Evap Coil 1600 RPM - without Filters 20 HP - without Return Air Dampers...
  • Page 120 Unit Start Up Figure 51. 40 & 50, 55 / 48 & 59 ton supply fan performance S_HL* 40 & 50, 55, 48 & 59 Ton Dual 20 X 20 Fans Entrance Losses 1200 RPM - without Evap Coil - without Filters - without Return Air Dampers 40 HP - without Exhaust...
  • Page 121 Unit Start Up Figure 53. 90, 105, 115 and 130 ton supply fan performance 10000 20000 30000 40000 50000 60000 RT-SVX36G-EN...

  • Page 122: Pressure Drop Tables

    Unit Start Up Pressure Drop Tables Figure 54. Wet airside pressure drop at 0.075 lb/cu.ft. 20 - 89 ton evaporator coil Figure 55. Dry airside pressure drop at 0.075 lb/cu.ft. 20 - 89 ton evaporator coil RT-SVX36G-EN...
  • Page 123 Unit Start Up Figure 56. Wet airside pressure drop at 0.075 lb/cu.ft. 90 - 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 Figure 57. Dry airside pressure drop at 0.075 lb/cu.ft. 90 - 130 ton evaporator coil Evaporator Dry Airside Pressure Drop at 0.075 lb/cu.ft.
  • Page 124 Unit Start Up RT-SVX36G-EN...
  • Page 125 Unit Start Up RT-SVX36G-EN...
  • Page 126 Unit Start Up Table 40. Component static pressure drops (in. W.G.)—exhaust damper for return fan Nom Tons Exhaust Damper Exhaust Damper (AC/EC) for Return Fan Nom Tons for Return Fan 4000 0.08 10000 0.28 6000 0.19 14000 0.56 8000 0.35 17000 0.75 20/24...
  • Page 127 Unit Start Up Table 41. 20-89 tons - modulating 100% exhaust fan performance Negative Static Pressure Nominal 0.250 0.500 0.750 1.000 1.250 1.500 1.750 2.000 Tons (AC/EC) RPM BHP 4000 0.38 0.75 1.08 1.45 1.87 2.34 2.88 6000 0.74 1.17 1.65 2.22 2.78...
  • Page 128 Unit Start Up Table 42. 90-130 Tons modulating 100% exhaust fan performance Negative Static Pressure Nominal Std 0.250 0.500 0.750 1.000 1.250 1.500 1.750 2.000 2.250 2.500 Tons RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 28000 516 11.42 551 12.41 586 13.70 622 15.25 657 16.71 690 18.16 723 19.90 754 21.74 785 23.60 815 25.45 30000 550 13.94 579 14.86 614 16.25 646 17.72 680 19.45 712 20.93 743 22.54 773 24.41 803 26.38 832 28.36 32000 583 16.82 609 17.68 642 19.12 672 20.58 704 22.34 735 24.12 764 25.67 793 27.42 822 29.41 850 31.50...
  • Page 129 Unit Start Up Table 43. 20-89 tons - 50% exhaust fan performance 4000 0.29 0.54 0.82 1.07 1.30 1.56 1.87 6000 0.71 0.90 1.22 1.60 2.01 2.43 2.85 8000 1.55 1.73 1.96 2.30 2.72 3.20 3.73 70/75 80/89 10000 2.88 3.13 3.34 3.59...
  • Page 130 6. Performance data includes cabinet and rain hood effect. Damper pressure drop must be added to the return duct static per Table 40, p. 126 7. Shaded area indicates nonstandard BHP or RPM selections. Contact a local Trane representative for more information. RT-SVX36G-EN...
  • Page 131 7. Performance data includes cabinet and rain hood effect. Damper pressure drop will have to be added to the return duct static per Table 40, p. 126 8. Shaded area indicates nonstandard BHP or RPM selections. Contact a local Trane representative for more information. RT-SVX36G-EN...

  • Page 132: Economizer Damper Adjustment

    Unit Start Up Table 47. Return fan performance—60, 70, 75 tons AC; 73, 80, 89 tons EC (36.5” fan) Negative Static Pressure Std. 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 12000 1.07 1.59 2.13 2.71 3.31 3.91 4.54 5.20 13000 1.27 1.83...
  • Page 133 Unit Start Up dampers are closed, can overload the supply fan motor and cause building pressurization control problems due to improper CFM being delivered to the space. The fresh air/return air damper linkage is connected to a crank arm with a series of holes that allows the installer or operator to modify the amount of fresh air damper travel in order to match the return static pressure.
  • Page 134 Unit Start Up WARNING Rotating Components! The following procedure involves working with rotating components. Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in rotating components cutting and slashing technician which could result in death or serious injury.
  • Page 135 Unit Start Up Table 49. Fresh air damper pressure drop (inches w.c.) — Air-Cooled and Evaporative Condensing (20, 25 Ton and 24, 29 Ton) Units (50, 55 and 59 Ton) Units Damper Position Damper Position 4000 0.03 0.04 0.06 0.13 0.16 0.33 10000...

  • Page 136: Compressor Start-Up (All Systems)

    Unit Start Up Compressor Start-Up (All Systems) Figure 58. Fresh air and return air linkage adjustment 1. Ensure that the “System” selection switch at the remote panel is in the “Off” position. Top View 2. Before closing the disconnect switch, ensure that the compressor discharge service valve and the RETURN AIR FRESH AIR...
  • Page 137 Unit Start Up 8. Once the configuration for the components is complete, press the NEXT key until the LCD displays the “Start test in __Sec. ” screen. Press the + key to designate the delay before the test is to start. This service test will begin after the TEST START key is pressed and the delay designated in this step has elapsed.

  • Page 138: Compressor Operational Sounds

    Unit Start Up Compressor Crankcase Heaters 20 - 73 and 80 ton units are equipped with 90 watt heaters installed on each compressor. 75 and 89 - 130 ton units are equipped with 160 watt heaters per compressor. Compressor Operational Sounds At Low Ambient Start-Up When the compressor starts up under low ambient conditions, the initial flow rate of the compressor is low due to the low condensing pressure.

  • Page 139: Evaporative Condenser Startup

    Dolphin Water Care is an option offered by Trane that is NOT a substitute for regular water treatment by a qualified water treatment professional. If a water treatment system is not operating on the unit, do not proceed.
  • Page 140 Unit Start Up To remove shipping brackets Important: Remove fan shipping brackets before startup. Failure to remove brackets could result in fan damage. Evaporative condensers are shipped with fan shipping brackets to reduce damage caused by vibration during shipment. The fan shipping brackets must be removed prior to unit startup. To remove the shipping brackets start from the side opposite to the drain actuator: 1.
  • Page 141 Unit Start Up Figure 60. Fan shipping bracket removal Mist Eliminator Fan Shipping Bracket Screws Fan Shipping Bracket Access Doors Actuator Side Inlet Louvers Figure 61. Float bracket setting Fill sump so float shuts off when water is within these slots RT-SVX36G-EN...

  • Page 142: Pressure Curves

    Unit Start Up Pressure Curves To Check Operating Pressures 1. Start the unit and allow the pressures to stabilize. Note: If unit includes the Modulating Dehumidification Control option, pressure curves apply to the cooling mode only. 2. Measure the outdoor air dry bulb temperature (F) entering the condenser coil. 3.
  • Page 143 Unit Start Up Figure 63. 20 ton high operating pressure curve (all compressors and condenser fans “On”) COOLING CYCLE PRESSURE CURVE 105 °F Ambient 95 °F Ambient 85 °F Ambient 75 °F Ambient 65 °F Ambient Suction Pressure, PSIG Note: To check operating pressure, see instructions 142.
  • Page 144 Unit Start Up Figure 65. 25 ton high operating pressure curve (all compressors and condenser fans “On”) COOLING CYCLE PRESSURE CURVE 105 °F Ambient 95 °F Ambient 85 °F Ambient 75 °F Ambient 65 °F Ambient Suction Pressure, PSIG Note: To check operating pressure, see instructions 142.
  • Page 145 Unit Start Up Figure 67. 30 ton high operating pressure curve (all compressors and condenser fans “On”) COOLING CYCLE PRESSURE CURVE 105 °F Ambient 95 °F Ambient 85 °F Ambient 75 °F Ambient 65 °F Ambient Suction Pressure, PSIG Note: To check operating pressure, see instructions 142.
  • Page 146 Unit Start Up Figure 69. 40 ton high operating pressure curve (all compressors and condenser fans “On”) COOLING CYCLE PRESSURE CURVE 105 °F Ambient 95 °F Ambient 85 °F Ambient 75 °F Ambient 65 °F Ambient Suction Pressure, PSIG Note: To check operating pressure, see instructions 142.
  • Page 147 Unit Start Up Figure 71. 50/55 ton high operating pressure curve (all compressors and condenser fans “On”) COOLING CYCLE PRESSURE CURVE 105 °F Ambient 95 °F Ambient 85 °F Ambient 75 °F Ambient 65 °F Ambient Suction Pressure, PSIG Note: To check operating pressure, see instructions 142.
  • Page 148 Unit Start Up Figure 73. 60 ton high operating pressure curve (all compressors and condenser fans “On”) COOLING CYCLE PRESSURE CURVE 105 °F Ambient 95 °F Ambient 85 °F Ambient 75 °F Ambient 65 °F Ambient Suction Pressure, PSIG Note: To check operating pressure, see instructions 142.
  • Page 149 Unit Start Up Figure 75. 75 ton standard operating pressure curve (all compressors and condenser fans “On”) COOLING CYCLE PRESSURE CURVE 105 °F Ambient 95 °F Ambient 85 °F Ambient 75 °F Ambient 65 °F Ambient Suction Pressure, PSIG Note: To check operating pressure, see instructions 142.
  • Page 150 Unit Start Up Figure 77. 90 ton standard operating pressure curve (all compressors and condenser fans “On”) COOLING CYCLE PRESSURE CURVE 90 Ton Standard Capacity 105 °F Ambient 95 °F Ambient 85 °F Ambient 75 °F Ambient 65 °F Ambient Suction Pressure, PSIG Note: To check operating pressure, see instructions 142.
  • Page 151 Unit Start Up Figure 79. 90 ton high operating, high efficiency pressure curve (all compressors and condenser fans “On”) COOLING CYCLE PRESSURE CURVE 90 Ton High Capacity High Efficiency 105 °F Ambient 95 °F Ambient 85 °F Ambient 75 °F Ambient 65 °F Ambient Suction Pressure, PSIG Note: To check operating pressure, see instructions...

  • Page 152: Thermostatic Expansion Valves

    Unit Start Up Figure 81. 115 ton high operating pressure curve (all compressors and condenser fans “On”) COOLING CYCLE PRESSURE CURVE 115 Ton Standard Capacity COOLING CYCLE PRESSURE CURVE 105 Ton High Capacity 105 °F Ambient 105 °F Ambient 95 °F Ambient 95 °F Ambient 85 °F Ambient 85 °F Ambient...

  • Page 153: Charging By Subcooling

    Unit Start Up On air-cooled units, the expansion valves shipped installed were factory set to control between 14- 18°F at the ARI full load rating conditions (approximately 45°/125°F saturated suction/discharge). On evaporative condenser units, the expansion valves shipped installed were factory set to control between 18-22°F at the ARI full load rating conditions (approximately 45°/105°F saturated suction/ discharge).

  • Page 154: Low Ambient Dampers

    Unit Start Up Low Ambient Dampers Operation Low Ambient Dampers are available as a factory installed option on 20 - 75 Ton units or can be field- installed. Dampers are used to extend the operation of these units from the standard operational temperatures to a minimum of 0°...
  • Page 155 Unit Start Up 4. Firmly hold the damper blades in the closed position. 5. Retighten the actuator clamp. To check damper operation, program the actuator for 100% on circuit #1 and/or circuit #2. (The output signal will go to 10 VDC and the damper will drive to the full open position. Electric, Steam and Hot Water Start-Up (Constant Volume &...

  • Page 156: Gas Furnace Start-Up (Constant Volume & Variable Air Volume Systems)

    Unit Start Up WARNING Rotating Components! During installation, testing, servicing and troubleshooting of this product it may be necessary to work with live and exposed rotating components. Have a qualified or licensed service individual who has been properly trained in handling exposed rotating components, perform these tasks.
  • Page 157 Unit Start Up – Variable Frequency Drive (100% Output, if applicable) – RTM Occ/Unocc Output (Unoccupied) – Heat Stages 1 & 2 (On) – Turn the 115 volt control circuit switch 4S24 located in the heater control panel to the “On” position.
  • Page 158 Unit Start Up 4. Check the carbon dioxide levels after each adjustment. 5. Press the STOP key at the Human Interface Module in the unit control panel to stop the system operation. Table 52. Recommended manifold pressures and CO levels during furnace operation (see notes) Manifold Furnace Stage Firing Rate...

  • Page 159: Full Modulating Gas Furnace

    Unit Start Up Figure 84. Natural gas combustion curve (ratio of oxygen to carbon dioxide in percent) Curve Fuel 1,000 BTU per cu. ft. of Natural Gas. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Percent Oxygen Figure 85.
  • Page 160 Unit Start Up pressure that is sensed by the modulating gas valve. The greater the combustion air pressure, the greater the call for gas and the higher the firing rate of the heater. As the temperature setpoint is reached, the Modulating Heat control will cause the combustion air actuator to change the damper position to a lower firing rate that matches the heat load of the space.

  • Page 161: Limited Modulating Gas Furnace

    Unit Start Up 8. Use Table 35, p. 108 to program the minimum (5%) firing rate. Allow the system to operate for approximately 10 minutes. 9. Use a carbon dioxide analyzer and measure the percentage of carbon dioxide in the flue gas. If the measured carbon dioxide level is between 6.0% and 8.0%, no adjustment is necessary.
  • Page 162 Unit Start Up 3. Press the STOP key at the Human Interface Module in the unit control panel to stop the system operation. Figure 86. Modulating gas regulator 1. Adjustment and indication of the air to gas ratio. 2. Adjustment and indication of the bias. 3.

  • Page 163: Final Unit Checkout

    Unit Start Up Final Unit Checkout After completing all of the checkout and start-up procedures outlined in the previous sections (i.e., operating the unit in each of its Modes through all available stages of cooling and heating), perform these final checks before leaving the unit: 1.

  • Page 164: Startup Checklists

    Startup Checklists 20-75 Ton — Air-Cooled This checklist is intended to be a guide for the start up technician. Many of the recommended checks and actions could expose the technician to electrical and mechanical hazards. Refer to the appropriate sections in the unit IOM for appropriate procedures, component specifications and safety instructions.
  • Page 165 Startup Checklists Table 53. Startup checklist (continued)— 20-75 ton air-cooled Verify Task Completed Verify all fans rotate in proper direction Verify fan amperages within nameplate specs (Please document on log sheet) Unit Configuration and Setup Verify model number in the UCM configuration matches unit model number on name plate Configure unit using IOM and critical control parameters listed in Table 54, p.

  • Page 166: 24-89 Ton - Evaporative Condenser

    Startup Checklists Table 54. Critical control parameters Notes: 1. Using the Human Interface (HI), go to SETUP Menu and input setting for parameters listed below. 2. Use the map shown below to determine region of country based on unit site location. Economizer Settings Suggested Parameter...
  • Page 167 Startup Checklists Table 55. Startup checklist — 24-89 ton evaporative cooling Verify Task Completed Access/Egress Initial Site Inspection Unit exterior inspected for damage (dents, bends, missing panels, doors work properly) Unit clearances adequate to avoid air recirculation etc. Verify crankcase heaters are working and on for 8 hours prior to unit start (may require 480V availability) Wear electrical PPE Lockout tag out unit Verify unit interior is free from debris/obstructions etc.
  • Page 168 Startup Checklists Table 55. Startup checklist (continued)— 24-89 ton evaporative cooling Verify Task Completed Electric Heat (If Applicable) Electric heat circuits have continuity Perform electric heat start-up procedure outlined in IOM Gas Heat (If Applicable) Gas heat piping includes drip leg previously installed by controlling contractor Gas heat flue assembly fully installed Gas heat condensate line + heat tape installed where applicable Verify heating system matches name plate...
  • Page 169 Startup Checklists Table 56. Critical control parameters Notes: 1. Using the Human Interface (HI), go to SETUP Menu and input setting for parameters listed below. 2. Use the map shown below to determine region of country based on unit site location. Economizer Settings Suggested Parameter...
  • Page 170 Startup Checklists 90-130 Ton — Air Cooled Important: Verify water treatment is functional before beginning startup. This checklist is intended to be a guide for the start up technician. Many of the recommended checks and actions could expose the technician to electrical and mechanical hazards. Refer to the appropriate sections in the unit IOM for appropriate procedures, component specifications and safety instructions.
  • Page 171 Startup Checklists Table 57. IntelliPak startup checklist (continued)— 90-130 ton air cooled Verify Task Completed Verify all fans rotate in proper direction Verify fan amperages within nameplate specs (Please document on log sheet) Unit Configuration and Setup Verify model number in the UCM configuration matches unit model number on name plate Configure unit using IOM and critical control parameters listed in Table 55, p.
  • Page 172 Startup Checklists Table 58. Critical control parameters Notes: 1. Using the Human Interface (HI), go to SETUP Menu and input setting for parameters listed below. 2. Use the map shown below to determine region of country based on unit site location. Economizer Settings Suggested Parameter...
  • Page 173 Startup Checklists Figure 88. Dry bulb changeover map RT-SVX36G-EN...

  • Page 174: Maintenance

    Maintenance Table 59. Control settings and time delays Control Description Elec. Designation Contacts Open Contacts Closed Compressor Circuit Breakers 20 - 130 1CB8 thru 1CB11 Table 60, p. 174 Table 60, p. 174 Combustion Airflow Switch 4S25 see note 1 0.1 - 0.25"...
  • Page 175 Maintenance Figure 89. Unit internal fuse replacement data for air handling units RT-SVX36G-EN...
  • Page 176 Maintenance Table 61. Filter data Cartridge Filters (box- Panel-Type Panel-Type Filters Bag-Type Filters type) Prefilters Unit Model (AC/EC) Size of each Qty. Size of each Qty. Size of each Qty. Size of each 12 X 24 X 19 12 X 24 X 12 12 X 24 X 2 20 &...

  • Page 177: Fan Belt Adjustment

    Maintenance Table 64. Refrigerant coil fin data (continued) Condenser Coil Evaporator Coil Aluminum Fins Copper Fins Size Rows/Fin Tube Diameter/ Size Rows/Fin Tube Diameter/ Rows/Fin Tube Diameter/ Tonnage (ft2) Series Surface (ft2) Series Surface Series Surface 6/168 3/8”/Enhanced 3/252 5/16/Enhanced 3/156 5/16/Enhanced 6/168...
  • Page 178 Maintenance 5. Remove the belt tension gauge. The small O-ring now indicates a number other than zero on the plunger’s force scale. This number represents the force (in pounds) required to give the needed deflection. 6. Compare the “force” scale reading (Step 5) with the appropriate “force” value listed in Figure 91.
  • Page 179 The units described in this manual use R-410A refrigerant which operates at higher pressures than R-22 refrigerant. Use ONLY R-410A rated service equipment or components with these units. For specific handling concerns with R-410A, please contact your local Trane representative.

  • Page 180: Scroll Compressor Replacements

    Maintenance NOTICE: Compressor Damage! In order to prevent compressor damage, you MUST follow recommendations below: Important: Do NOT release refrigerant to the atmosphere! If adding or removing refrigerant is required, the service technician must comply with all federal, state, and local laws. •...
  • Page 181 Maintenance Charge the new oil into the Schrader valve on the Figure 93. PTFE gasket shell of the compressor. Due to the moisture absorption properties of POE oil, do not use POE oil from a previously opened container. Also discard any excess oil from the container that is not used.
  • Page 182 Maintenance Electrical Phasing: If it becomes necessary to replace a compressor, it is very important to review and follow the Electrical Phasing procedure described in the startup procedure of the IOM. If the compressors are allowed to run backward for even a very short period of time, internal compressor damage may occur and compressor life may be reduced.
  • Page 183 Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors. Verify with an appropriate voltmeter that all capacitors have discharged.

  • Page 184: Vfd Programming Parameters

    ] buttons. When the desired selection has been made, press the OK button. Should replacing the a VFD become necessary, the replacement is not configured with all of Trane's operating parameters. The VFD must be programmed before attempting to operate the unit.

  • Page 185: Monthly Maintenance

    Maintenance e. Cut off the mains supply and wait until the display turns off. f. Reconnect the mains supply - the frequency converter is now reset. g. Ensure parameter 14-22 Operation Mode has reverted back to “Normal Operation” . Notes: •...
  • Page 186 Maintenance • Use a hand grease gun to lubricate these bearings; add grease until a light bead appears all around the seal. Do not over lubricate! • After greasing the bearings, check the setscrews to ensure that the shaft is held securely to the bearings and fan wheels.

  • Page 187: Coil Cleaning

    Important: DO NOT use any detergents with microchannel condenser coils. Pressurized water or air ONLY. For evaporator and reheat coil cleaners, contact the local Trane Parts Center for appropriate detergents. 1. Remove enough panels from the unit to gain safe access to coils.
  • Page 188 3. For accessible areas, remove loose dirt and debris from both sides of the coil. For dual row microchannel condenser coil applications, seek pressure coil wand extension through the local Trane Parts Center. 4. When cleaning evaporator and reheat coils, mix the detergent with water according to the manufacturer’s instructions.
  • Page 189 Maintenance Evaporative Condenser Coil Sump Water Management Water Supply Overall performance of any water- cooled device can be affected by suspended particulates, mineral concentration, trash and debris resulting in clogging and heat transfer loss. The unit is designed to greatly minimize problems with these impurities, however, float valves and solenoid valves are used to control the incoming water.
  • Page 190 Maintenance Always consult local codes for water treatment and waste water removal requirements. Consult a water treatment expert for water analysis and chemical treatment methods and recommendations for specific applications. If deemed necessary after consultation with local water experts, there are various means of water treatment available which can be field installed.

  • Page 191: Fall Restraint

    Maintenance Fall Restraint WARNING Falling Off Equipment! This unit is built with fall restraint slots located on unit top that MUST be used during servicing. These slots are to be used with fall restraint equipment that will not allow an individual to reach the unit edge.
  • Page 192 Maintenance Final Process For future reference, you may find it helpful to record the unit data in the blanks provided. Complete Model Number: Unit Serial Number: Unit “DL” Number (“Design special” units only): Wiring diagram numbers (from unit control panel): -schematic(s) -connections Unit Address (TCI)
  • Page 193 Maintenance RT-SVX36G-EN...

  • Page 194: Unit Wiring Diagram Numbers

    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 72. Unit Wiring Diagram Numbers Diagram Number Tons Description 2307-9105 20, 30, 75 Power Schematic - Standard 2307-9179...
  • Page 195 Unit Wiring Diagram Numbers Table 72. Unit Wiring Diagram Numbers Diagram Number Tons Description 2307-9153 40-75 Connection Control Box - Standard 2307-9190 90-130 Connection Control Box - Standard 2307-9149 20-30 Connection Control Box - w/ Supply Fan VFD 2307-9154 40-75 Connection Control Box - w/ Supply Fan VFD 2307-9191 90-130...
  • Page 196 Unit Wiring Diagram Numbers Table 72. Unit Wiring Diagram Numbers Diagram Number Tons Description 2313-1034 24-89 Connection Raceway Evap Cooled w/ Sup VFD Continued on next page 2313-1035 24-89 Connection Raceway Evap Cooled w/ Exh/Ret VFD 2313-1036 24-89 Connection Raceway Evap Cooled w/ Sup & Exh/Ret VFD 2307-9176 20-75 Field Connection - Constant Volume...

  • Page 197: Warranty

    Warranty Commercial Equipment Rated 20 Tons and Larger and Related Accessories PRODUCTS COVERED - This warranty* is extended by Trane Inc. and applies only to commercial equipment rated 20 Tons and larger and related accessories. The Company warrants for a period of 12 months from initial start-up or 18 months from date of...

  • Page 198: Index

    Index Symbols BAYSENS077 78 Cross Section 47 BAYSENS077* 78 Customer connection wire range 70 "Gate" type valve 62 BAYSENS108 77 CV control options 84 "Ship with" Locations 28 BAYSENS110 77 “Wet heat” coil fin data 176 BAYSENS110* 77 Numerics Daytime Warm-up 25 BAYSENS119 78 DC Analog Input/Outputs 77 1U51 83...
  • Page 199 Head Pressure Control 20 RTM resistance input vs. setpoint nameplate 4 temperatures 14 Heat Module 14 Non-Trane roof curbs 46 Rubber Isolators 51 heating coil falls to 40°F 22 High Duct Temp Thermostats 22 High Pressure Controls 20 O/A Sensor & Tubing Installation 53...
  • Page 200 Zone Temperature - Cooling 22 SZVAV 18 Zone Temperature - Heating 23 Zone Temperature Control Zone Temperature vs. Resistance Panel 77 Coefficient 82 Thermostatic Expansion Valves 137 Trane Communication Interface 22 Transducer 21 Traq Sensor 95 TraqTM Sensor Airflow Measurement 117 RT-SVX36G-EN...
  • Page 201 HVAC systems, comprehensive building services, and parts. For more information, visit www.Trane.com. Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice. © 2011 Trane All rights reserved...

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