Trane IntelliPak Signature Series Installation, Owner, And Diagnostic Manual
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Trane IntelliPak Signature Series Installation, Owner, And Diagnostic Manual

Commercial self-contained signature series, 20-80 ton, “bo” and later design sequence
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See also: Programming Manual
Installation, Owner, and
Diagnostic Manual
®
IntelliPak
Commercial Self-Contained
Signature Series, 20-80 T on
Models
"BO" and later Design Sequence
SCWF -020, -022, -025, -029, -032, -035, -038, -042, -046, -052, -058, -065, -072, -080
SIWF -020, -022, -025, -029, -032, -035, -038, -042, -046, -052, -058, -065, -072, -080
SCRF -020, -025, -029, -030, -035, -040, -050, -060
SIRF -020, -025, -029, -030, -035, -040, -050, -060
May 2000
SCXF-SVX01B-EN

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Summary of Contents for Trane IntelliPak Signature Series

  • Page 1 Installation, Owner, and Diagnostic Manual ® IntelliPak Commercial Self-Contained Signature Series, 20-80 T on Models “BO” and later Design Sequence SCWF -020, -022, -025, -029, -032, -035, -038, -042, -046, -052, -058, -065, -072, -080 SIWF -020, -022, -025, -029, -032, -035, -038, -042, -046, -052, -058, -065, -072, -080 SCRF -020, -025, -029, -030, -035, -040, -050, -060 SIRF -020, -025, -029, -030, -035, -040, -050, -060 SCXF-SVX01B-EN...

  • Page 2: General Information

    CFC fully halogenated Common HVAC Acronyms compounds. For convenience, a number of acronyms The Trane Company urges all HVAC and abbreviations are used throughout service personnel to make every effort to this manual. These acronyms are prevent any refrigerant emissions while alphabetically listed and defined below.

  • Page 3: Table Of Contents

    Contents Cross reference to related publications/information: IntelliPak ® Self-Contained Programming Guide, PKG-SVP01B-EN Remote Air-Cool-Condenser Installation, Owner, and Diagnostic Manual, CXRC- SVX01A-EN For units with a VFD: Instruction Bulletin Altivar 58 Adjustable Speed Drive Controllers Installation Guide, Type H Controllers Keypad Display Installation General Information Pre-installation Considerations...

  • Page 4: Installation

    Energy saving single fan casing with inlet guide vanes or variable frequency drive Internally trapped condensate drain for low cost installation ® Trane 3-D Scroll Compressor for reliability, efficiency and Waterside valve quiet operation package option to enhance system Two-bolt connection on cleanable...

  • Page 5: Unit Nameplate

    General Installation Information Standard Controls Standard controls supplied with the unit include the human interface (HI) panel with unit control module (UCM). All set-up parameters are preset from the factory. Human Interface Panel The HI is unit mounted and accessible without opening the unit’s front panel.

  • Page 6: Model Number Description

    General Installation Information Model Number Description ® Each IntelliPak self-contained unit has a multiple character model number unique to that unit. To determine a unit’s specific options, reference the model number on the unit nameplate using the model number explanation below. Sample Unit Model Number: S C W F N 20 4 2 BO A B 2...
  • Page 7 General Installation Information 2 = Protective Coating Damper (Top O/A) Digit 33 - Control Interface Options 3 = Protective Coating w/ Finish Coat E = Airside Econ w/ Traq ™ Damper and A = Generic BAS Module (GBAS) Comparative Enthalpy (Top O/A) B = Ventilation Override Module (VOM) Digit 23 - Future Use F = Airside Econ w/ Standard Damper...
  • Page 8 General Installation Information “After-Shipment” Accessory Model Number P S A F W N 20 4 AO 0 0 0 0 1 2 3 4 5 6 7 8 9 10 11 12 1314 15 16 17 18 19 20 21 22 23 24 Digit 1 - Parts/Accessories 10 = 10 HP Motor J = BAYSENS020 - VAV Programmable...

  • Page 9: Pre-Installation Considerations

    “Service Access” section on page 10. o Inspect the unit for concealed o Notify your Trane representative of Position the unit and skid assembly in its damage before it is stored and as the damage and arrange for repair.
  • Page 10 Pre-Installation Installation Considerations Service Access The compressor, condenser, and fan motor access panels are secured with See Figure I-PC-2 for recommended quick acting fasteners. Fast thread service and code clearances. Access unit screws secure access panels for controls through the front, top left panel. economizer coils, evaporator coils The panel requires a screwdriver to expansion valves, water valves, and left...

  • Page 11: Rigging And Handling

    Pre-Installation Installation Considerations Rigging and Handling Table I-PC-2. Gravity Block Dimensions — Table I-PC-3. Gravity Block Dimensions — English (inches) Metric (mm) Unit Shipping Unit Size Units ship strapped to the truck bed on Unit Size SXWF 20-38 shipping skids. The unit and skid are SXWF 20-38 SXRF 20-35 SXRF 20-35...
  • Page 12 Pre-Installation Installation Considerations Skid Removal o Allow three fan diameters above the The unit ships on skids to provide forklift unit for the discharge ductwork. Return locations from the front or rear. The skid air enters the rear of the unit and allows easy maneuverability of the unit conditioned supply air discharges during storage and transportation.

  • Page 13: Table Of Contents

    Dimensions Installation and Weights Table I-DW-1. Unit Weights - SCWF/SCRF/SIWF/SIRF 2-Row 4-Row Unit Base Airside Waterside Waterside Heating Size Weight Economizer Economizer Economizer Coil Box lbs. (kg) lbs. (kg) lbs. (kg) lbs. (kg) lbs. (kg) SCWF/SIWF 3010 (1365) 430 (195) 140 (65) 340 (155) 460 (210)
  • Page 14 Dimensions Installation and Weights 20-38 T on Self-Contained – English – (Inches) ON PAGE 17 ON PAGE 17 ON PAGE 17 SCXF-SVX01B-EN...
  • Page 15 Dimensions Installation and Weights 20-38 Ton Self-Contained – Metric – (mm) ON PAGE 17 ON PAGE 17 ON PAGE 17 SCXF-SVX01B-EN...
  • Page 16 Dimensions Installation and Weights 42-80 Ton Self-Contained SCXF-SVX01B-EN...

  • Page 17: Electrical Connections

    Dimensions Installation and Weights Detail A Electrical Connections 40 3/8” (20-38 Ton) 1026 mm (20-38 Ton) Discharge Dimensions - English - (inches) Unit Tons 20-38 Tons 40-80 Tons Discharge Dimensions - Metric - (mm) Unit Tons 20-38 Tons 40-80 Tons 1105 SCXF-SVX01B-EN...

  • Page 18: Hot Water Coil

    Dimensions Installation and Weights Hot Water Coil Main Control Panel Hot Water Outlet Connection Notes: 1. All coils are factory Hot Water Inlet Connection mounted, piped, and Air Inlet wired. 2. All piping connections are 1- ” (38.1mm) female NPT fittings. Hot Water Coil Piping Locations - English (inches) Unit Sizes 20 - 38 Unit Sizes 42 - 80...

  • Page 19: Discharge Plenum

    Dimensions Installation and Weights Flexible Horizontal Plenum Dimensions - English - (inches) Discharge Plenum Weight 325 lbs. Unit Sizes 20-38 Std. 430 lbs. Ext. 705 lbs. 390 lbs. Unit Sizes 42-80 Std. 540 lbs. Ext. 705 lbs. Plenum Dimensions - Metric - (mm) Weight 1648 2435...
  • Page 20 Dimensions Installation and Weights Airside Economizer SCXF-SVX01B-EN...

  • Page 21: Dimensions And Weights

    Dimensions and Weights Airside Economizer Dimensions - English - (inches) Unit Model F (1) F (2) G (1) G (2) H (1) H (2) 20 SXWF 20 SXRF 25 SXRF 22 SXWF 29 SXWF 29 SXRF 32 SXWF 30 SXRF 35 SXRF 35 SXWF 38 SXWF...

  • Page 22: Mechanical Requirements

    Diameters flexible material such as heavy canvas. If Flexible Duct a fire hazard exists, Trane recommends using Flexweave 1000, type FW30 or equivalent canvas. Use three inches for the return duct and three inches for the discharge duct. Keep the material loose to absorb fan vibration.

  • Page 23: Water Piping

    Mechanical Installation Requirements Water Piping 2. Attach the water supply line to the inlet Condensate Drain Connections connection, and the return line to the The condensate drain is internally Note: To prevent water damage, install all outlet connection. Entering and leaving trapped.

  • Page 24: Installation Requirements

    Mechanical Installation Requirements Water Temperature Requirements Do not allow the entering water temperature to go below 54 F (12.2 C) on units with constant water flow (basic piping). This will cause the compressors to shut down and the mechanical cooling function will lockout.
  • Page 25 4. Wrap each refrigerant line component return, etc. Refer to the Trane with a wet cloth to keep it cool during Reciprocating Refrigeration Manual for brazing. Excessive heat can damage proper line sizing and layout.

  • Page 26: Electrical Requirements

    Electrical Installation Requirements Unit Wiring Diagrams Voltage Imbalance Read the voltage at the compressor Specific unit wiring diagrams are terminals to determine if it is balanced. provided on the inside of the control Voltage imbalance on three phase panel door. Use these diagrams for systems can cause motor overheating connections or trouble analysis.
  • Page 27 Electrical Installation Requirements Selection Procedures Table I-ER-1. Number of Compressors per Unit RLA = Rated Load Amps SCRF/SIRF 25 - 29 30 - 35 SCWF/SIWF 20 - 25 29 - 32 35 - 38 42 - 46 52 - 58 65 - 72 Compressor LRA = Locked Rotor Amps Fan Motor LRA = Locked Rotor Amps,...

  • Page 28: Pre-Startup Requirements

    Pre-Startup Installation Requirements Pre-Startup Procedures Supply Fan Isolators Remove the shipping channels and Before starting up units perform the mounting bolts from beneath the fan. See following procedures to ensure proper Figure I-PR-1. Open both fan unit operation. compartment access doors to access the Unit Protective Covers channels.
  • Page 29 ”. To double isolation. The Trane Company HVAC system designer. In general, the increase the clearance, lift the unit off strongly recommends that you consult a...
  • Page 30 Pre-Startup Installation Requirements Plenum Treat field-cut holes to prevent fiberglass from entering the airstream. Before installing the plenum attach the insulation strip that ships with the plenum. Note: Plenum insulation must be applied See Figure I-PR-3 for proper insulation properly to prevent air bypass around the location.
  • Page 31 Pre-Startup Installation Requirements Hydronic Coil Installation then no connection is required. 5. Apply the edge protector to the flange Steam and Hot Water Coil on the unit. Remove knockout on the unit filter cover and install the bushing Note: The hydronic coil options are also in the plastic bag.
  • Page 32 Pre-Startup Installation Requirements Airside Economizer Installation Unit Handling 1. Hoist the damper cabinet to the installation location with straps positioned under the skid as shown in Figure I-PR-4. Use spreader bars to prevent unit damage during lifting. 2. With the damper cabinet at its final location (near the unit), remove the screws securing it to the skid from the side flanges.
  • Page 33 Pre-Startup Installation Requirements Static Pressure Transducer Installing the Transducer Installation (VAV units only) Complete the following procedure to properly install the inlet guide vane static Supply air static pressure controls the pressure transducer. inlet guide vane and inverter options. A 1.
  • Page 34 Pre-Startup Installation Requirements Standard with All Units Zone Sensor Options Zone sensor options are available and be ordered with the unit or after the unit ships. Following is a full description of zone sensors and their functions. Installation instructions are on page 36. Programming instructions for the programmable zone sensor are on page 39.
  • Page 35 Accessory Model Number Digit 6 = C BAYSENS013 Description This electronic analog sensor features single setpoint capability and timed override with override cancellation. It is used with a Trane Integrated Comfort system. BAYSENS013 features and system control functions include: • Remote temperature sensing in the zone •...
  • Page 36 Pre-Startup Installation Requirements Zone Sensor Installation Note: Guidelines for wire sizes and lengths are shown in Table PS-1. The total All sensor options ship in the main control resistance of these low voltage wires panel and are field-installed. must not exceed 2.5 ohms per conductor. Programmable option installation Any resistance greater than 2.5 ohms may procedures are on page 38.
  • Page 37 Pre-Startup Installation Requirements Figure I-PR-14. Zone sensor mounting hole locations. Mounting Directly to the Wall Mounting to Junction Box Junction Figure I-PR-15. Typical zone sensor installation SCXF-SVX01B-EN...
  • Page 38 Pre-Startup Installation Requirements Programmable Zone Sensors Constant Volume Zone Sensor Variable Air Volume Zone Sensor Programmable zone sensors provide BAYSENS019 Description BAYSENS020B Description programming and zone temperature This seven day programmable sensor This seven day programmable sensor sensing for the self-contained unit. It with night setback has four periods for with night setback has four periods for allows the user to monitor room...
  • Page 39 Pre-Startup Installation Requirements Programmable Zone Sensor See Figure I-PR-20. To remove the zone until the anchor tops are flush with the Installation sensor module from the subbase, wall. gently pull away and upward. 6. Pull the zone sensor module wires Mounting Location through the subbase as shown in Figure CAUTION...
  • Page 40 Pre-Startup Installation Requirements Time Clock Option 3. Provide a separate independent circuit for the time clock The time clock option has a power supply. programmable timer that is factory wired 4. Since all electronic instruments are to the unoccupied input to provide on/off sensitive to voltage spikes, pay close control.
  • Page 41 Pre-Startup Installation Requirements Remote Human Interface Panel Installation Human Interface (HI) Panel The HI enables the user to communicate necessary unit operating parameters and receive operating status information from within the occupied space. The HI displays top level information in the LCD window, unless the operator initiates other displays, for the various unit functions.
  • Page 42 Pre-Startup Installation Requirements Mounting the Remote Human Note: The top of the enclosure is marked 3. Place the enclosure against the Interface (RHI) Panel “TOP .” mounting surface and mark the mounting holes. The installer must provide all mounting 4. With the enclosure in the correct hardware such as;...
  • Page 43 Pre-Startup Requirements Installation Figure I-PR-24. Remote HI mounting holes and knockout locations. SCXF-SVX01B-EN...

  • Page 44: Wiring The Remote Human Interface

    Pre-Startup Installation Requirements Wiring the Remote Human Communication Link (Shielded Twisted Connect the wire connected to the Interface Pair) Wiring positive (+) terminal at the remote panel. Trim the outer covering of the shielded Connect the wire connected to the The remote human interface requires 24 cable back approximately 1 inch.
  • Page 45 Connecting to Tracer Summit Communication Wiring ® IntelliPak self-contained units operate Note: Communication link wiring is a with Trane building automation software, shielded, twisted pair of wire and must ® Tracer Summit version 10.0.4 or later or comply with applicable electrical codes.
  • Page 46 Pre-Startup Installation Requirements Pre-Startup Checklist oVerify the fan and motor sheaves are aligned. Complete this checklist after installing the oCheck the belt tension for proper unit to verify all recommended adjustment. installation procedures are complete oEnsure the fan rotates freely. before unit start-up.

  • Page 47: Programming

    Installation Programming Programmable Zone Sensor Options BAYSENS019 Figure I-P-1. BAYSENS019 Keypad and display configuration. BAYSENS019 Keypad and Display 4. Erase Button 8. Mode Button Explanation • Erases time and temperature settings Toggles the controller through its 4 throughout each of the programmed modes: off, heat, cool, and auto;...
  • Page 48 Installation Programming BAYSENS020 Figure I-P-2. BAYSENS020 Keypad and display configuration. BAYSENS020 Keypad and Display 3. Program Button 7. Mode Button Explanation Toggles between the display control • Toggles the controller between the two screen and the display program screen. modes, off and auto. 1.
  • Page 49 Installation Programming Initial Power-Up Program Button ture is also set in occupied periods, if heat Before applying power to your ZSM, and Depressing the program button will is installed and warmup options are before performing setup and operation toggle the display from normal run mode enabled.
  • Page 50 Installation Programming Note: Blank temperature settings may be • Keypad lockout applies only to normal a temporary manual override menu. See entered at any of the four daily periods. run mode and temporary manual Figure I-P-4. When a setpoint is left blank and in an override mode.
  • Page 51 Installation Programming Temporary Override Run Mode • Depressing the day button will toggle The temporary override run mode sends the ZSM between the day and hour setpoint data to the unit control module icon. (UCM) from the setpoint data entered in •...
  • Page 52 Installation Programming Table I-P-1. Zone Sensor BAYSENS019 Option Menu Settings. Option # Description Value Factory Setting Morning Warm-up 0 = Disabled 1 = Enabled Economizer minimum 0 = Disabled Position override 1 = Enabled Temperature Scale 0 = Fahrenheit 1 = Enabled Supply Air Tempering 0 = Disabled 1 = Enabled...
  • Page 53 Installation Programming Note: On both programmable zone sensor Table I-P-2. Zone Sensor BAYSENS020 Option Menu Settings. options, changing either option 9 or 10 will Option # Description Value Factory Setting erase the current program. To avoid Morning Warm-up 0 = Disabled reprogramming, set options 9 and 10 1 = Enabled before programming.
  • Page 54 Installation Programming Figure I-P-9. BAYSENS019 Complete IconDisplay. Icon Descriptions 9. Displays the desired state of either OCCUPIED or UNOCCUPIED. BAYSENS019 Icon Descriptions 10. The padlock symbol indicates that the Refer to Figure I-P-9 for the written keyboard lockout is in effect. descriptions below.
  • Page 55 Installation Programming Figure I-P-10. BAYSENS020 Complete IconDisplay. Programming, Run, and Menu. BAYSEN020 Icon Descriptions 10. The padlock symbol indicates that the Refer to Figure I-P-10 for the written keyboard lockout is in effect. descriptions below. 11. Operating mode selection box. 1.
  • Page 56 Installation Programming Programming the Time Clock “Day” key and press “Prog.” key to is permanently off. Option advance to program. Pressing the “B” key a fourth time 6. For 7 day time control, press “Day” returns to automatic, “B” appears in the Setting the Time key.

  • Page 57: Startup

    Installation Start-Up Unit Start-Up Procedures 1. Ensure the fan rotation is in the wiring and make required changes to direction of the arrow on the fan setpoint and sensor sources. See the 1. Check all electrical connections for ® housing. If rotation is incorrect, first IntelliPak Self-Contained Programming tightness.
  • Page 58 Installation Start-Up Start-Up Log Complete this log at unit start-up. Unit: ____________________________ Unit Location: _________________________________________ Unit Voltage: __________ __________ __________ Evaporator: Evaporator fan motor horsepower: __________ Evaporator fan motor amps: __________ __________ __________ Evaporator fan RPM (actual): ____________________ Evaporator System Static (from test and balance report or actual readings): Supply Duct Static: __________ Return Duct Static: __________ Evaporator Air Conditions with both compressors operating:...
  • Page 59 Installation Start-Up Water Cooled Units: Circuit A: Entering Water Temperature - F: __________ Leaving Water Temperature - F: __________ Entering Water Pressure - psig: __________ Leaving Water Pressure - psig: __________ Circuit B: Enter Water Temperature - F: __________ Leaving Water Temperature - F: __________ Entering Water Pressure - psig: __________ Leaving Water Pressure - psig: __________ Circuit C:...

  • Page 60: Owner

    Owner General Information Points List ECEM Module: RTM Module Analog inputs • Return air temperature Binary inputs • Return air humidity • Emergency stop In addition, units with a VOM have: • External auto/stop • Unoccupied/occupied Binary inputs • Dirty filter •...
  • Page 61 General Owner Information Unit Control Components input of the RTM. RTM must be selected They will return to the position shown on as the source for economizer minimum the unit wiring diagram when the unit ® The Signature Series IntelliPak self- position.

  • Page 62: Owner Information

    General Owner Information minimum. This input will override all VOM Table O-GI-2. RTM Sensor Resistance vs. Temperature inputs, if the VOM option is on the unit. Temperature (F) Resistance (ohms) Temperature (F) Resistance (ohms) Occupied/Unoccupied Contacts 346.1 11.60 To provide night setback control if a 241.7 11.31 remote panel with night setback was not...

  • Page 63: Heat Module

    ICPB was ordered with the With the building’s exhaust fans running (VOM) Option unit. If not, contact your local Trane and the unit’s supply fan off, the representative to order an ICPB kit for The ventilation override module can be conditioned space becomes negatively field installation.

  • Page 64: Ventilation Control Module

    SXWF 58 0.5 - 4.5 vdc 15,080-24,650 Interface (TCI ) Module - Option SXWF 65 0.5 - 4.5 vdc 16,900-27,625 used with Trane ICS SXWF 72 0.5 - 4.5 vdc 18,700-29,800 SXWF 80 0.5 - 4.5 vdc 20,800-29,800 The Trane communication interface SXRF 20 0.5 - 4.5 vdc...
  • Page 65 This can be set at the HI using the setup systems other than Trane’s Tracer ® inputs through the HI. To assign the menu, under the “demand limit definition system.
  • Page 66 General Information Owner Table O-GI-6. GBAS Analog Input Setpoints Control Parameter Signal Range Setpoint Range Occupied Zone Cooling Setpoint 0.5 to 4.5 vdc 50 to 90 F (CV units only) Unoccupied Zone Cooling Setpoint 0.5 to 4.5 vdc 50 to 90 F (CV and VAV) Occupied Zone Heating Setpoint 0.5 to 4.5 vdc...
  • Page 67 General Owner Information Waterside Components temperature is less than 58 F (15 C). This a minimum of 4 F plus the economizer’s option allows the compressor to operate approach temperature. The approach Waterside components consist of water with entering fluid temperature down to temperature default is 4 F .
  • Page 68 General Owner Information • Variable Water Flow Two-way modulating control shutoff Condenser 1 Condenser 1 valves are wired, controlled, and installed in the unit. One valve is located in the economizer’s water inlet, and the other is in the condenser bypass water inlet. Condenser 2 Condenser 2 When the economizer valve is active, the...
  • Page 69 General Information Owner Unit Airside Components A field installed indicator device may be modes to prevent supply air duct wired to relay terminals to indicate when overpressurization. However, if for any The unit’s air delivery system consists of filter service is required. Contacts are reason the supply air pressure exceeds condensers, dampers, enthalpy switch rated at 115 VAC and are powered by a...
  • Page 70 General Owner Information stage of cooling, in occupied or source has lower enthalpy. This allows module (VCM) utilizes the velocity unoccupied mode and when ambient true comparison of outdoor air and return pressure input, the RTM outdoor air conditions are favorable for economizing. air enthalpy by measurement of outdoor temperature input, and the minimum Inherent in the unit controller is the ability...
  • Page 71 General Owner Information peak operating efficiency. An outside air temperature and relative humidity Air-Cooled Condensers temperature and relative humidity sensors, are provided for monitoring SXRF units are designed for use with the sensor are provided for field installation outside and return air. The sensors are remote air-cooled condenser, model to monitor reference enthalpy.
  • Page 72 General Information Owner Input Devices and System all compressor operation for that circuit, and are connected to the SCM/MCM for Functions and initiates a manual reset diagnostic. circuits 1 and 2 (air or water cooled), and WSM for circuits 3 and 4 (only water- Low Pressure Control Following are basic input device and cooled).
  • Page 73 (stage 2 or supply air temperature falls below the with a Trane communication interface 3 depending on unit size), the modulating occupied heating setpoint temperature. module (TCI). They provide a high limit output is 100% (10 VDC).

  • Page 74: Sequence Of Operation

    Sequence of Owner Operation Control Sequences of heating setpoint and higher cooling Operation setpoint). Setpoints can be programmed at the HI, Tracer Summit ® , or the night Occupied/Unoccupied Switching setback zone sensor. There are four ways to switch occupied/ The unit enters the unoccupied mode unoccupied: when the RTM receives a closed signal...
  • Page 75 Sequence of Owner Operation For units without volume control entering is reached. Next a 60 minute timer unoccupied mode, the following se- begins. If the building load reaches the quence will occur: MWU ventilation setpoint, or the the 60 minutes expire, whichever is first, the •...
  • Page 76 Sequence of Owner Operation Occupied Sequence Of with hydronic heat for cooling to operate. must be set at the HI. The economizer Operation with the highest priority attempts cooling Cooling first. Once it is operating at its maximum, Upon entering occupied mode, the RTM All setpoints can be adjusted using the HI and if additional cooling is necessary, the panel.
  • Page 77 Sequence of Owner Operation Mechanical Cooling Hydronic Heat: Hot Water or Steam Supply Air Tempering (Hot Water and If the zone temperature cannot be On units with hot water or steam heating, Steam VAV Units Only) maintained within the setpoint deadband the zone temperature can be controlled When supply air temperature falls below using the economizer option or if there is...
  • Page 78 Sequence of Owner Operation Compressors compressors are manifolded together. If turned on as requested by the unit there are four compressors, the second temperature control algorithm. Units use two sizes of hermetic scroll two are manifolded. compressors, 10 and 15 hp, and can use Compressor Lead/Lag Operation from two to four compressors.
  • Page 79 Sequence of Owner Operation Compressor Safety Devices the supply air setpoint temperature The compressors have motor control band region. temperature cutout switches in the motor The supply air temperature control band windings. These switches are provided is centered around supply air tempera- to take the compressors off line during ture setpoint and is adjustable from 2 to high motor winding temperature...
  • Page 80 Sequence of Owner Operation Adjust the supply air temperature control band according to the desired unit performance. Increasing the control band reduces the equipment cycle rate and increases the maximum potential supply air temperature deviation from setpoint. Conversely, decreasing the control band reduces the maximum potential tem- perature deviation, but increases the compressor cycle rate.

  • Page 81: Maintenance

    Owner Maintenance Maintenance Procedures the left side of the unit. To replace throwaway filters, remove the dirty Air Filters elements and install new filters with the Filter access doors are on the unit’s left filter’s directional arrows pointing toward side. Filter access for the 2” or 4” filter the fan.
  • Page 82 Owner Maintenace Inspecting and Cleaning the Inspecting and Cleaning the Drain Pan Check the condensate drain pan and Inspect the fan section every six months drain line to ensure that the condensate or more frequently if operating drains properly at least every six months experience dictates.

  • Page 83: Supply Fan

    Owner Maintenance Supply Fan center line. See Figure O-M-5 on page 84 for recommended torques. Fan Drive 4. Once the sheaves are properly aligned, Perform the following procedures tighten sheave set screws to proper according to the “Periodic Maintenance torque. See Tables O-M-1 and O-M-2 on Check List”...
  • Page 84 Owner Maintenance Fan Bearings Table O-M-1. Fan Shaft Bearing Torques The opposite drive end bearing is a Setscrew Hex-size Recommended Torque special bearing with close tolerance fit of Size Across Flats In-lb Ft-lb balls and races. Replace this bearing with 1/4"-20 1/8"...
  • Page 85 Owner Maintenance Adjusting Belt Tension To adjust belt tension refer to Figure O-M- 5 on page 84 and perform the following procedure: 1. Loosen bolts A, B, and E on both sides of the sliding motor base. See Figure O- M-6.

  • Page 86: Refrigerant System

    Refrigerant System Follow specific manufacturer’s guidelines for conversion of existing Special Note on Refrigerant Emissions systems. Follow the Trane recommended • To assist in reducing power generation procedures on operation, maintenance, emissions, always attempt to improve and service to ensure refrigerant equipment performance with improved conservation and emission reduction.
  • Page 87 150 psig Special Note on Refrigerant Emissions emissions, always attempt to improve and repeat the leak test. Also, use soap Follow the Trane recommended equipment performance with improved bubbles to check for leaks when procedures on operation, maintenance, maintenance and operations that will nitrogen is added.
  • Page 88 Owner Maintenance WARNING WARNING To charge the system, complete the following procedure: Do not apply flame to the 1. Charge liquid refrigerant into the liquid Do not exceed 200 psig when line service valve of each compressor refrigerant container to increase leak testing the system.
  • Page 89 Owner Maintenance Figure O-M-9. Typical water-cooled (SXWF) compressor section components. SCXF-SVX01B-EN...
  • Page 90 Owner Maintenance Inlet Guide Vanes On occasion, the inlet guide vane actuator or inlet guide vanes may need to be Perform the following procedure every removed. For proper adjustment of inlet six months for proper inlet guide vane guide vanes and/or actuator, see Figure operation: O-M-10.
  • Page 91 Owner Maintenance Coil Fin Cleaning WARNING 7. Allow the unit to dry thoroughly before putting the system back into service. Keep coils clean to maintain maximum 8. Straighten any coil fins that may be performance. For operation at its highest Some chemical coil cleaning damaged with a fin rake.
  • Page 92 Engage the services of a qualified water treatment specialist. The water treatment specialist to determine condenser water circuit is composed of what treatment is advisable. The Trane copper, steel, and cast iron. Company warranty specifically excludes The chemical supply house should...

  • Page 93: Piping Components

    Owner Maintenance Piping Components clip holds the paddle assembly in the switch body. Water Valves 3. Remove the wire retainer clip by Water valves have a stern packing nut. If reaching down past the paddle with a there is evidence of water leakage at the pair of slim nosed pliers and gripping valve stem, proceed as follows: the end of the wire.
  • Page 94 Owner Maintenance Maintenance Periodic 5. Check the liquid line sight glasses 6. Inspect the inlet vane assembly and Checklists during operation. Bubbles in the sight perform maintenance procedures in glasses indicate a possible shortage of the IGV maintenance section on page Monthly Checklist refrigerant or an obstruction in the The following check list provides the...

  • Page 95: Diagnostic Troubleshooting

    Diagnostic Troubleshooting T roubleshooting System Checks Note: If phasing at the main incoming In this example, 2.2 percent imbalance of power terminal is incorrect, switch two of more than 2.0 percent exists, be sure to Before proceeding with technical trouble the three incoming power leads.

  • Page 96: Diagnostics

    Diagnostic Troubleshooting Diagnostics Diagnostics Reset Required: (PAR) An automatic reset Condenser Temp Sensor Failure - Circuit 1, occurs after the CO sensor transducer 2, 3, or 4 Refer to the IntelliPak ® Self-Contained input receives a signal that is within range Problem: The saturated condenser Programming Guide, PKG-SVP01B-EN, for ten continuous seconds.
  • Page 97 Diagnostic Troubleshooting Diagnostics Reset Required: (PAR) An automatic reset 50 F or temperature > 209 F , and unit applicable) and the compressor staging/ occurs after communication has been configured with water cooled chilled water cooling function will be restored. condenser and/or economizer cancelled.
  • Page 98 Diagnostic Troubleshooting Diagnostics UCM’s Reaction: The functions that water low air temp limit trip input opens Reason for Diagnostic: The auto reset designated the heat module auxillary for > 1 second. On units with both supply air static pressure limit diagnostic temperature input as their input are hydronic heat and chilled water, both low has occurred for the third time while the...
  • Page 99 Diagnostic Troubleshooting Diagnostics Reset Required: (INFO) An automatic r.e enthalpy function reverts to dry-bulb setpoint input returns to its allowable reset occurs after the mode input returns temperature changeover (“Level 1”) range for 10 continuous seconds, or after to its allowable range for 10 seconds. control.
  • Page 100 Diagnostic Troubleshooting Diagnostics RTM Aux. Temp. Sensor Failure Kohms (-40 F). If so, check field/unit wiring UCM’s Reaction: The default space Problem: The RTM auxillary temperature between sensor and RTM. pressure setpoint will become the active sensor data is out of range. space pressure setpoint.
  • Page 101 Diagnostic Troubleshooting Diagnostics ® Supply Air Temp Cool Setpoint Fail UCM’s Reaction: These unit functions are Tracer Summit , or by cycling power to Problem: The active supply air disabled: the RTM. temperature cooling setpoint is out of • supply air tempering range.
  • Page 102 Diagnostic Troubleshooting Diagnostics UCM’s Reaction: All active commands zone cooling setpoint reverts to the Reset Required: (PAR) An automatic reset and setpoints provided by Tracer default value. occurs after communication is restored. Summit ® through the TCI will be communications with the VOM. cancelled and/or ignored.
  • Page 103 Diagnostic Troubleshooting Diagnostics Check: Field/unit wiring between RTM economizer and b. have water flow and WSM. switch installed. c. Time to React: immediate Reason for Diagnostic: The RTM has lost e. Actions to be Initiated: A “Lockout All communication with the WSM. Ckts”...
  • Page 104 Index cooling tower interlock 63 GBAS input voltage corresponding cooling towers 23 setpoints 66 cooling/airside economizer 76 general waterside recommendations accessory model number description 7 cooling/waterside economizer 76 acronyms 2 generic building automation system cycling capacity morning warmup 75 air filters 81 air-cooled condensers 71 module 65 airside components 69...
  • Page 105 Index low ambient control 72, 73 points list 60 service access 10 low ambient sensor 69 pre-installation checklist 12 service valve option 80 low entering air protection device 73 pre-startup checklist 46 ship-separate accessories 9 low entering air temperature sensor pre-startup procedures 28 shipping package 9 PRESSURIZE sequence 63...
  • Page 106 Index waterside piping arrangements 23 Trane communications interface 64 WSM communications fail 103 WSM mixed air temp sensor fail 103 UCM signal conditions 53 unit components 4 unit control components 61 zone cool setpoint failure 103 unit control module 5, 51, 53, 61, 67...
  • Page 107 SCXF-SVX01B-EN...
  • Page 108 For more information contact your local district office or e-mail us at comfort@trane.com Since The Trane Company has a policy of continuous product improvement, it reserves the right to change design An American Standard Company and specifications without notice.

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