Trane Climate Changer T Series Installation Operation & Maintenance
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Trane Climate Changer T Series Installation Operation & Maintenance

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Installation
Operation
Maintenance
T-Series Climate Changer™
Air Handlers
Sizes 3 to 100
Part No. X39510024010A
CLCH-SVX06A-EN
January 2008

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Summary of Contents for Trane Climate Changer T Series

  • Page 1 Installation Operation Maintenance T-Series Climate Changer™ Air Handlers Sizes 3 to 100 Part No. X39510024010A CLCH-SVX06A-EN January 2008...

  • Page 2: Warnings And Cautions

    CFC (chlorofluorocarbon) fully halogenated compounds. Trane urges that all HVAC servicers working on Trane equipment, or any manufacturer’s products, make every effort to eliminate, if possible, or vigorously reduce the emission...

  • Page 3: Ultraviolet (Uv) Germicidal Irradiation Lights (Optional)

    Degradation of these materials can result in serious damage to the equipment. Trane accepts no responsibility for the performance or operation of our air handling equipment in which ultraviolet devices were installed outside of the Trane factory.

  • Page 4: Table Of Contents

    Contents Warnings and Cautions ..........2 Protecting the Environment .
  • Page 5 Contents Controls Interface ..........71 Connecting the operator display .

  • Page 6: Description

    Note: This information is required when ordering parts or requesting service for a T-Series air handler. Figure 1. T-Series air handler section nameplate Trane order number Unit level serial number and service model number...

  • Page 7: General Information

    UL-approved electric heat sections, humidifiers, mixing boxes, moisture eliminator sections, exhaust dampers, controls, blenders and airflow monitoring stations. For more information, refer to the following documents, available from your local Trane sales engineer: • T-Series air handler catalog, CLCH-DS-9 •...

  • Page 8: Factory-Mounted Controls

    24 Vac control transformers. No additional power wiring is required. Pre-Packaged Solutions for Controls If the T-Series air handler has been selected using one of Trane’s pre-packaged solutions options for controls, there are a number of resources available to aid in commissioning and start-up of the unit.

  • Page 9: Wiring

    The fan motor nameplate includes a wiring diagram. If there are any questions concerning the wiring of the motor, write down the information on the motor nameplate and contact your local Trane sales office. CLCH-SVX06A-EN • T-Series Climate Changer Air Handler...

  • Page 10: Pre-Installation Requirements

    Conduct a thorough inspection immediately before accepting the shipment. Note: Delivery cannot be refused. Trane is not responsible for shipping damage. • Check all access doors to confirm the latches and hinges are not damaged.

  • Page 11: Assembly Hardware

    Trane sales engineer to report missing hardware. Resolving Shipping Damage Trane air handlers ship free-on-board (FOB) ship dock, meaning that the unit belongs to the customer the moment the delivery truck leaves the factory shipping dock. If damage has occurred to the unit during shipment, follow these instructions: Note: Trane is not responsible for shipping damage.

  • Page 12: Storage Recommendations

    Pre-Installation Requirements Storage Recommendations A T-Series air handler is an outdoor unit and requires no special protection for storage before installation. Keep the equipment in the original shipping container for protection and ease of handling. Note: The warranty does not cover damage to the unit or controls due to negligence during storage.

  • Page 13: Preparing The Unit Site

    Pre-Installation Requirements Preparing the Unit Site • Ensure the installation site can support the total weight of the unit (see “Unit Dimensions and Weights” section on page 15 for approximate section weights; refer to the unit submittals for actual weights). •...
  • Page 14 Pre-Installation Requirements Roof Curb Installation Checklist See T-Series air handler Roof Curb installation manual CLCH-IN-18 for information on installing roof curbs. It is recommended that the curb be installed directly on the support members and fastened to the supports using tack welds or other equivalent methods. Properly supported decking should be installed inside the air handler section of the curb when this method is used.

  • Page 15: Unit Dimensions And Weights

    Unit Dimensions and Weights Service Clearances Figure 3. Service clearance Filter Coil Drive Table 2. Service Clearances (inches) Clearance Items A (filter) B (coil) C (fan) D (starter or VFD) Note: NOTE: At a minimum, the above clearance dimensions are recommended on one side of the unit for regular service and maintenance. Refer to as-built submittal for locations of items such as filter access doors, coil, piping connections, motor locations, etc.
  • Page 16 Unit Dimensions and Weights Note: For specific dimensional and weight information, refer to the unit submittals. The dimensions and weights in this manual are approximate. Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice.
  • Page 17 Unit Dimensions and Weights Table 3. Section dimensions (inches) and weights (pounds)-unit sizes 3-25 Nominal airflow 1500 3000 4000 5000 6000 7000 8500 10,500 12,500 Airflow at 625 fpm 2169 3475 4338 6075 8331 9025 10,938 12,500 15,000 Unit size Height (inches) 32.5 38.75...
  • Page 18 Unit Dimensions and Weights Table 4. Section dimensions (inches) and weights (pounds) - unit sizes 30-100 Nominal airflow 15,000 17,500 20,000 25,000 28,500 33,000 40,000 50,000 Airflow at 625 fpm 17,500 19,963 22,569 30,206 35,937 40,625 44,234 54,958 Unit size Height (inches) 63.5 72.75...
  • Page 19 Unit Dimensions and Weights Table 4. Section dimensions (inches) and weights (pounds) - unit sizes 30-100 Nominal airflow 15,000 17,500 20,000 25,000 28,500 33,000 40,000 50,000 Airflow at 625 fpm 17,500 19,963 22,569 30,206 35,937 40,625 44,234 54,958 Unit size Height (inches) 63.5 72.75...
  • Page 20 Unit Dimensions and Weights Single-Piece Shipment Limitations The specifications provided in Table 5 indicate the maximum values for a single-piece shipment. If either the maximum weight or maximum length is exceeded, the T-Series unit will ship in multiple pieces. Note: These limits are based on a four-point lift. Table 5.
  • Page 21 Unit Dimensions and Weights Motor Weights Fan weights provided in this manual include the heaviest ODP (open drip-proof) motor. Approximate weights below are based on A.O. Smith brand motors. Table 7. Approximate motor weights Horsepower Motor Type Voltage 1-1/2 7-1/2 115s 230s Energy...

  • Page 22: Installation-Mechanical

    See T-Series air handler roof curb installation manual CLCH-IN-18A for details. Per job requirements, air handlers will ship as a complete assembly or in sections. Trane recommends that the contractor use spreader bars and slings to rig units and sub- assemblies (sections).
  • Page 23 Figure 4. Unit lifting in the field Rigging and spreader bars not furnished by Trane Recommended attachment to lifting lugs • Make the loop of the sling parallel to the direction of airflow whenever possible.
  • Page 24 Installation-Mechanical • Never lift units in windy conditions. Personnel should be positioned overhead and on the ground to guide the crane or helicopter operator in positioning the sections. • Never stack the pipe cabinet and inlet hoods on the unit as the unit is being lifted. •...
  • Page 25 Figure 6. Inlet and exhaust hood lifting Figure 7. Pipe cabinet lifting Rigging and spreader bar not furnished by Trane Use chain guider if available Recommended attachment to lifting lugs...

  • Page 26: Assembly Checklist

    Failure to review the submittal drawings could result in performance or assembly problems. If there are any discrepancies, contact your local Trane sales representative before proceeding. All shipping supports and crating on the face of the sections must be removed and discarded to permit proper fit-up and sealing of the surfaces.
  • Page 27 Installation-Mechanical Mounting the Unit If a unit arrives in sections, then each section must be individually hoisted, set on a roof curb or pier mount and then assembled. The pipe cabinet must also be mounted as an individual section. Refer to “Pipe Cabinet (Chase) Installation”...

  • Page 28: Assembling The Unit

    Installation-Mechanical Assembling the Unit WARNING Toxic Fumes! Keep open flame away from unit exterior or interior. Do not weld or use cutting torch on the exterior or interior of the unit. The unit contains polyurethane insulation. Failure to keep open flame away from unit exterior or interior may result in the production of toxic gas that could result in death or serious injury.
  • Page 29 Installation-Mechanical Figure 11. Roof assembly joints (unit size 40 to 100) 1. See drawing MS2998-3686-0200 in the hardware package. Roof joint strip 2. Apply butyl tape along four roof panel seams where they come together. Cross cover 3. Join the panels together at the seams and secure them in place with Butyl 5/16 X 3/4-inch screws and nuts.
  • Page 30 Installation-Mechanical Control Wiring Assembly at Section Splits Figure 13. Control wiring assembly at section splits (all unit sizes) Outer access cover Tape Wire harness Foam block Inner access cover 1. Sections must be together. See Figure 2. Remove outer and inner access covers on both sections adjacent to shipping split. 3.
  • Page 31 Installation-Mechanical Base Assembly Figure 14. Joining base assembly 1. See drawing MS2998-3686-0200 in the hardware package. Flashing 2. Slide the 1/2-inch threaded rod through the hole in each of the two joined base sections as shown in Figure 3. Install two flat washers, lock washer, and 1/2-inch nut at each rod end.
  • Page 32 Installation-Mechanical Hood (Back and Side) Installation Inlet hoods should be installed after the unit has been set in place. They should not be stacked on the unit as it is being hoisted. Mounting hardware and caulking tape for the inlet hoods are located inside the unit. For installation complete the following: Note: The hood assembly should be supported by chains, spreader bar, or other means (see lifting instructions section) when installed to the unit.
  • Page 33 Installation-Mechanical Pipe Cabinet (Chase) Installation Figure 17. Pipe cabinet attachment See drawing MS2999-5696 in the hardware package. • Apply 1-inch butyl tape around perimeter of hood and pipe cabinet prior to attaching to unit. See Figure Attachment • Attach hood/pipe cabinet to unit with #10 x 3/4 self- flange drilling screws.

  • Page 34: Filters

    • A pre-filter section is placed before the fan. Note: Cartridge and bag filters provided by Trane are fitted with a 7/8-inch header that fits in the filter track. If using filters supplied by another manufacturer, filters should be purchased with a 7/8-inch header. In some cases it may be necessary to gasket other manufacturers’...
  • Page 35 In these configurations, ensure a blank section is placed between the fan inlet and the filter section. Trane recommends the use of disposable pre-filters with high efficiency filters. Disposable pre-filters slide into the mounting tracks just ahead of the bag/cartridge filters.
  • Page 36 Installation-Mechanical Filter Placement Figure 22. 2-inch and 4-inch Angled filter layout T-Series Climate Changer Air Handler IOM • CLCH-SVX06A-EN...
  • Page 37 Installation-Mechanical Figure 23. Bag and cartridge filter layout CLCH-SVX06A-EN • T-Series Climate Changer Air Handler IOM...
  • Page 38 Installation-Mechanical Figure 24. 2-inch and 4-inch Open or flat filter layout and 2-inch and 4-inch high-efficiency filter layout T-Series Climate Changer Air Handler IOM • CLCH-SVX06A-EN...
  • Page 39 Installation-Mechanical Figure 25. HEPA filter layout CLCH-SVX06A-EN • T-Series Climate Changer Air Handler IOM...

  • Page 40: Fan Section

    Follow proper lockout/tagout procedures to ensure the equipment 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.

  • Page 41: Unit Isolation

    Installation-Mechanical Unit Isolation Review the mechanical specifications and determine the type of isolation to be used prior to removing the shipping tie-downs. Remove the tie-downs only if the factory-provided isolation is to be used. Internal Isolation The T-Series air handler fan section is internally isolated. The unit ships with the internal isolation base secured to prevent damage to the fan and motor assembly during shipment.
  • Page 42 Follow proper lockout/tagout procedures to ensure the equipment 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.
  • Page 43 Installation-Mechanical Table 8. Isolator minimum clearance adjustments (in) Unit size Fan type Isolator type Required clearance FC and AF Spring 10-30 FC and AF Spring 21-57 Plenum Spring 35-57 FC and AF Spring 66-100 FC, AF and Plenum Spring 1. Verify that the shipping bolts that hold the fan base in a fixed position have been removed.

  • Page 44: Dampers

    Installation-Mechanical Dampers Filter Mixing Section Before installing the mixing sections fitted with filter racks, be sure adequate clearance is provided to open the access doors and install the filters. Filter installation is explained in the “Filters” section on page 34. Actuators should be sized according to the torques given in Table Note: Mixing sections, and face-and-bypass dampers are designed for the damper...
  • Page 45 Installation-Mechanical Rods, Operators and Settings The T-Series air handler is available with factory-mounted controls or end devices. If the unit is not ordered with controls or end devices, it is the responsibility of the installer to provide and install them. Dampers are factory-installed and adjusted. There are three damper blade configurations available: parallel-blade, opposed-blade, and Traq dampers.

  • Page 46: Duct Connections

    Installation-Mechanical Duct Connections All duct connections to Trane air handlers should be installed in accordance with the standards of the National Fire Protection Association (NFPA) • NFPA 90A for selecting and installing of air conditioning and ventilating systems other than residence type •...
  • Page 47 Installation-Mechanical Figure 33. Typical section with duct flat/flange Figure 34. Typical section with duct flat/flange connections - uninsulated connections - insulated Insulated Duct Uninsulated Duct Section Section Airflow Airflow Flat Connection Flat Connection Damper Section Standard damper sections include mixing sections, filter mixing sections, face damper sections, There are two damper blade internal face and bypass sections, and economizer sections.
  • Page 48 Installation-Mechanical Traq Damper Size the duct connections to attach to the specified portion on the face of the Traq damper section. For a mitered corner, provide one hydraulic duct diameter between the entering face of the Traq dampers and the duct turn. For a radius elbow, or sweep, place the elbow directly against the face of the Traq dampers (see Figure 35).

  • Page 49: Installation - Piping

    Installation - Piping Coil Piping and Connections Proper installation, piping, and trapping is necessary to ensure satisfactory coil operation and to prevent operational damage: • Support all piping independently of the coils. • Provide swing joints or flexible fittings on all connections that are adjacent to heating coils to absorb thermal expansion and contraction strains.
  • Page 50 Threaded condensate drain connections are provided on only one side of the coil section. Pitch the connection lines horizontal or downward toward an open drain. Trane recommends installing a plug to facilitate cleaning of the trap. The drain connection size is 1-inch NPT (national pipe threads) external for unit sizes 3 to 30;...
  • Page 51 Installation - Piping Figure 36. Drain pan trapping for section under negative pressure Normal operation L = H + J + pipe diameter where: H = 1 inch for each inch of negative pressure* plus 1 inch J = 1/2 H *Negative pressure = total unit static pressure at worst case (loaded filters) minus external pressure...
  • Page 52 Installation - Piping Steam Coil Piping T-Series air handlers fitted with steam coils have labeled holes for piping penetrations. Figure 38 Figure 39 illustrate typical steam coil piping configurations. See Table 10 for the codes of system components in these figures. The coil condensate return line must be piped full size of the condensate trap connection, except for a short nipple screwed directly into the coil header’s condensate return tapping.
  • Page 53 Installation - Piping CAUTION Vacuum Breaker Cracking Pressure! The 1/2-inch NPT, 15 degree swing check valve vacuum breaker is recommended because other vacuum breakers, such as spring-loaded ball-check breakers, have cracking pressures as high as 1.25 inches Hg (17 inches of water). Vacuum breakers with fitting sizes smaller than 1/2 inch NPT are too small to relieve vacuum quick enough to ensure complete condensate drainage.
  • Page 54 Use bucket traps only when the supply steam is not modulated and is 25 psig or higher. Note: Trane steam coils require a minimum of 2 psi of pressure to assure even heat distribution. 2. Trap each coil separately to prevent holding up condensate in one or more of the coils.
  • Page 55 Installation - Piping Water Coil Piping Figure 40. Typical piping for type 5W one-row water coil Figure Figure 41, and Figure 42 illustrate typical water coil piping Water supply main configurations. Water return main Type WA, 5A, 5W, D, K, W, UW, TT, P ,2, P4, and P8 water coils are self- venting only if the water velocity exceeds 1.5 feet per second (fps) in...
  • Page 56 Installation - Piping Figure 42. Typical piping for type W or WA 1-row water coil Drain Figure 43. Typical piping for stacked water coils Drain T-Series Climate Changer Air Handler IOM • CLCH-SVX06A-EN...
  • Page 57 Installation - Piping Refrigerant Coil Piping Note: Refer to the “Protecting the Environment” section on page 3 for information on handling refrigerants. Figure 44 to determine the proper, relative sequence of the components in the refrigerant lines that connect the condensing unit to an evaporator coil. Refer to “Examples of Field-Installed Evaporator Piping”...
  • Page 58 Installation - Piping Liquid Lines Line Sizing. Properly sizing the liquid line is critical to a successful split-system application. The selected tube diameter must provide at least 5°F [2.7°C] of subcooling at the expansion valve throughout the operating envelope. Increasing the size of the liquid line will not increase the available subcooling.
  • Page 59 10 feet of run [1 cm per 3 m]—toward the evaporator. When the application includes a suction riser, oil must be forced to travel the height of the riser. Riser traps and double risers are unnecessary in the suction line when the refrigerant coil is used with Trane condensing units.
  • Page 60 Components. Installing the suction line requires field installation of these components: a filter, access port, and a Frostat™ control when the refrigerant coil is used with Trane condensing units. Position them as close to the compressor as possible.

  • Page 61: Examples Of Field-Installed Evaporator Piping

    Installation - Piping Examples of Field-Installed Evaporator Piping Single-Circuit Condensing Unit: Evaporator Coil with One Distributor Figure 46. Single-circuit evaporator coil with one distributor 1. Pitch the liquid line slightly—1 inch/10 feet [1 cm/3 m]—so that the refrigerant drains toward the evaporator. 2.
  • Page 62 Installation - Piping Single-Circuit Condensing Unit: Evaporator Coil with Two Distributors Figure 47. Single-circuit evaporator coil with two 1. Pitch the liquid line slightly—1 inch/10 feet distributors [1 cm/3 m]—so the refrigerant drains toward the evaporator. Evaporator coil 2. Provide one expansion valve per distributor. Suction line with horizontal-split (standard) circuiting...
  • Page 63 Installation - Piping Single-Circuit Condensing Unit: Evaporator Coil with Four Distributors Figure 48. Single-circuit evaporator coil with four distributors 1. Pitch the liquid line slightly—1 inch/ 10 feet [1 cm/3 m]—so the refrigerant drains toward the evaporator. 2. Provide one expansion valve per distributor.
  • Page 64 Installation - Piping Dual-Circuit Condensing Unit: Evaporator Coil with Two Distributors) Figure 49. Dual-circuit evaporator coil with two distributors 1. Pitch the liquid lines slightly—1 inch/10 feet [1 cm/3 m]—so the refrigerant drains toward the evaporator. 2. Provide one expansion valve per distributor. 3.
  • Page 65 Installation - Piping Dual-Circuit Condensing Unit: Evaporator Coil with Four Distributors Figure 50. Dual-circuit evaporator coil with four distributors 1. Pitch the liquid line slightly—1 inch/ 10 feet [1 cm/3 m]—so the refrigerant drains toward the evaporator. 2. Provide one expansion valve per distributor.
  • Page 66 Installation - Piping Dual-Circuit Condensing Unit: Evaporator Coil with Eight Distributors Figure 51. Dual-circuit evaporator coil with eight distributors 1. Pitch the liquid line slightly—1 inch/10 feet [1 cm/3 m]—so the refrigerant drains toward the evaporator. 2. Provide one expansion valve per distributor. 3.

  • Page 67: Installation - Electrical

    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 68 Installation - Electrical Figure 52. Typical high voltage wiring schematic T-Series Climate Changer Air Handler IOM • CLCH-SVX06A-EN...
  • Page 69 Installation - Electrical CAUTION Penetration Leaks! Properly seal all penetrations in unit casing. Failure to seal penetrations from inner panel to outer panel may result in unconditioned air entering the unit, and water infiltrating the insulation, resulting in equipment damage. Figure 54.
  • Page 70 Installation - Electrical To provide field-wiring to units with DDC or low limit controls: • If VFD or starter is not factory-mounted, provide 120 Vac power to a transformer in the valve jack when a separate circuit is recommended (see Figure 54).

  • Page 71: Controls Interface

    Controls Interface The portable operator display is used for temporary connection to and operation of Tracer MP580/581 and AH540/541 controllers. With the portable operator display, you can monitor data, change setpoints, monitor alarms, and override points. The portable operator display includes a 10 ft (3 m) cable with connector that is stored in the storage compartment of the carrying bag.

  • Page 72: Calibrating The Operator Display

    Controls Interface Calibrating the operator display To calibrate the operator display: 1. On the home screen, press Setup. The Setup menu appears. 2. Page down to view the next screen. 3. Press Calibrate Touch Screen. A calibration screen appears. CAUTION Equipment Damage! Do not allow the operator display to come in contact with sharp objects.

  • Page 73: Pre-Start

    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 74 It is recommended that the services of a qualified water treatment specialist be engaged to determine what water treatment, if any, is required. Trane assumes no responsibility for equipment failures which result from untreated or improperly treated water, or saline or brackish water.
  • Page 75 Bump-start the unit and confirm the fan wheel rotates properly, as indicated by the rotation arrow located on the fan housing. Note: For motor warranty needs, contact you local Trane sales office. CLCH-SVX06A-EN • T-Series Climate Changer Air Handler IOM...

  • Page 76: Start-Up

    Start-Up Unit Operation WARNING Rotating Components! During installation, testing, servicing and troubleshooting of this product it may be necessary to measure the speed of rotating components. Have a qualified or licensed service individual who has been properly trained in handling exposed rotating components, perform these tasks.
  • Page 77 Start-Up Calculate Motor Voltage Imbalance After startup, measure the motor voltage and amperage on all phases to ensure proper operation. The readings should fall within the range given on the motor nameplate. The maximum allowable voltage imbalance is 2 percent. Voltage imbalance is defined as 100 times the sum of the deviation of the three voltages from the average, divided by twice the average voltage.
  • Page 78 Start-Up Proper belt tension is required to ensure maximum bearing and drive component life and is based on motor horsepower requirement. A label located on the bearing support on the drive side of the unit lists all drive parts, the proper belt tension, and deflection for that tension for the specific drive (see Figure 60).
  • Page 79 Start-Up Table 11. Typical sheave diameter and deflection force Belt Deflection Force (lbs) Super gripbelts and Gripnotch belts and Smallest sheave unnotched gripbands notched gripbands Cross diameter range Speed (rpm) section (in.) range Used belt New belt Used belt New belt A, AX 3.0–3.6 1,000–2,500...
  • Page 80 Start-Up Determine Fan Speed Fan speed can be determined using a strobe-type tachometer, or revolution counter. Check unit vibration if the fan speed is changed more than 5 percent from the original designed speed, or if parts such as shafts, fan wheels, bearings, or other drive components are replaced.
  • Page 81 Start-Up Traq™ Dampers Traq dampers are low-leak dampers that modulate Figure 62. Traq damper terminal connections and measure airflow. Each Traq damper is supplied Ventilation Control with a factory-mounted ventilation control module Module (VCM) (VCM) on the interior of the mixing box section. The VCM has an input terminal for power and an output terminal for air velocity.
  • Page 82 Start-Up Table 14. VCM voltage versus airflow - Traq dampers at sea level Side Traq Air-mix and economizer sections Back inlet Traq Mixing box Traq one side Air-mixing section Economizer other side - outside air Mixing box Traq both sides Unit CFM@10VDC w/ Unit...
  • Page 83 Start-Up Fan Inlet Airflow Measuring System Figure 63. Piezometer airflow measurement A fan inlet airflow measuring system with a piezometer ring is available on many centrifugal and plenum fans. Each system comes with a differential pressure transmitter. The piezometer ring is connected to the LO port of the transmitter and the reference pressure point is connected to (or actually is) the HI port of the transmitter.

  • Page 84: External Insulating Requirements

    Start-Up Constant Factor K The constant factor K is unique for each fan and is primarily a function of the area and the geometry of the fan inlet. Pre-engineered factors are available from the factory for fan types where the airflow measurement system is available. Field-obtained factors can provide maximum accuracy.

  • Page 85: Routine Maintenance

    Routine Maintenance The following checklist is provided as an abbreviated guide to periodic maintenance. Detailed procedural information is given after this checklist. WARNING Hazardous Service Procedures! The maintenance and troubleshooting procedures recommended in this section of the manual could result in exposure to electrical, mechanical or other potential safety hazards.

  • Page 86: Maintenance Checklist

    Routine Maintenance Maintenance Checklist Frequency Maintenance After 48 hours Belts have acquired their permanent set. Readjust but do not overtighten. See the “Tension the Fan Belt” of operation section on page 56 for more information. Every week Observe unit weekly for any change in running condition and unusual noise. Every month •...

  • Page 87: Air Filters

    Note: Bag and cartridge filters must have an airtight seal to prevent air bypass. If using filters not supplied by Trane, apply foam gasketing to the vertical edges of the filter. Permanent Filters To clean permanent filters: 1.

  • Page 88: Drain Pans

    Routine Maintenance 6. Close and secure the access door. If the door can be closed without compressing the filter, adjust the block-off by loosening its screws and position it to provide an airtight seal. Drain Pans WARNING Hazardous Chemicals! Cleaning agents can be either acidic or highly alkaline. Handle chemical carefully. Proper handling should include goggles or face shield, chemical resistant gloves, boots, apron or suit as required.

  • Page 89: Fans

    Routine Maintenance Fans WARNING Rotating Components! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/ tagout procedures to ensure the equipment cannot be inadvertently energized. Secure drive sheaves to ensure rotor cannot freewheel. Failure to secure drive sheaves or disconnect power before servicing could result in death or serious injury.
  • Page 90 Routine Maintenance Bearing Set Screw Alignment Figure 64. Alignment Align bearing set screws as illustrated in Figure Table 12 on page 80 provides bearing set screw torque measurements. Fan Bearing Lubrication CAUTION Bearing Failure! Do not mix greases with different bases within the bearing. Mixing grease within the bearing may result in premature bearing failure.
  • Page 91 Routine Maintenance Table 17. Minimum hex head bolt torque in lb.-ft. (Grade 5 bolts) Size (inches) Thread Designation Minimum Torque 1/4-20 1/4-28 65/16-18 5/16-24 3/8-16 3/8-24 7/16-14 7/16-20 1/2-13 1/2-20 9/16-12 9/16-18 5/8-11 5/8-18 3/4-10 3/4-16 7/8-9 7/8-14 1-14 Note: Soft metric conversions are not acceptable for screw and hex sizes.

  • Page 92: Coils

    Routine Maintenance Coils WARNING Hazardous Chemicals! Coil cleaning agents can be either acidic or highly alkaline. Handle chemical carefully. Proper handling should include goggles or face shield, chemical resistant gloves, boots, apron or suit as required. For personal safety refer to the cleaning agent manufacturer’s Materials Safety Data Sheet and follow all recommended safe handling practices.
  • Page 93 Routine Maintenance Type K Cooling Coils Type K cooling coils have removable headers for cleaning: 1. Remove the headers. 2. Use a small nylon or fiber brush to clean the tubes. 3. Flush the tubes with water. 4. Install a new rubber sealing gasket and be sure it seats properly when the header is replaced.

  • Page 94: Coil Winterization

    Properly dispose of all contaminated materials and cleaning solution. Coil Winterization Water coil winterization procedures consist primarily of draining water from the coil before the heating season. Trane recommends flushing the coil with glycol if coils will be exposed to temperatures below 35 degrees. CAUTION Coil Freezeup! Properly drain and vent coils when not in use.
  • Page 95 5. To ensure no water remains in the coil, do not replace the header covers until the coils are put back into service. Note: When the coils are put back into service, use new gaskets. Trane recommends washers be used under the bolt heads and bolts be evenly tightened to 50 ft-lbs torque.
  • Page 96 Routine Maintenance Internal Insulation The process of cooling and dehumidification produces condensate that must be continuously removed from the air-handling unit. The section of the unit from the entering air side of the cooling coil to the leaving edge of the drain pan is considered to be the “wet”...

  • Page 97: Ultraviolet (Uv) Light Maintenance

    Routine Maintenance Note: Be careful not to damage the non-porous surface of the insulation. 3. Install a block-off to prevent spray from going into a dry section of the unit and/or system ductwork. 4. Thoroughly clean the contaminated area(s) with an EPA-approved sanitizer specifically designed for HVAC use.
  • Page 98 Routine Maintenance Cleaning the Bulbs Note: If bulbs are found to be broken, see the proper warning and cautions below regarding broken bulbs and hazardous vapors. 1. Disconnect all electrical power to the unit and the ultraviolet bulbs. 2. Wearing soft cloth gloves and safety glasses, use two hands and firmly grasp the bulb at each end.
  • Page 99 Routine Maintenance CAUTION Broken Glass! Bulbs are fragile and can be easily broken. Always use gloves and eye protection when handling these bulbs. Failure to handle bulbs properly may result in minor to moderate injury. Refer to the MSDS sheet from the bulb manufacturer for additional safety information.

  • Page 100: Diagnostics

    Diagnostics This section is intended to be used as a diagnostic aid only. For detailed repair procedures, contact your local Trane service representative. WARNING Hazardous Service Procedures! The maintenance and troubleshooting procedures recommended in this section of the manual could result in exposure to electrical, mechanical or other potential safety hazards.
  • Page 101 Diagnostics Table 18. Air handler troubleshooting recommendations Symptom Probable Cause Recommended Action Excessive vibration Poor alignment Align bearing set screws (see Figure 70, p. 61). Loosen and retighten bearing set screws. Shipping spacers not removed Remove shipping spacers and/or bolts (see the “Fan Isolation”...
  • Page 102 Diagnostics Table 18. Air handler troubleshooting recommendations Symptom Probable Cause Recommended Action Low refrigerant coil Incorrect airflow Check fan operating condition. capacity Expansion valve is not operating properly or is Check sensing bulb temperature. sized incorrectly Verify valve operation. Verify proper valve size. Incorrect refrigerant charge Verify refrigerant charge and adjust if necessary.
  • Page 103 Diagnostics Notes CLCH-SVX06A-EN • T-Series Climate Changer Air Handler IOM...
  • Page 104 Supersedes CLCH-IM-16A March 1999 www.trane.com For more information, contact your local Trane Trane has a policy of continuous product and product data improvement and reserves the right to office or e-mail us at comfort@trane.com change design and specifications without notice.

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