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IR Ingersoll Rand TSC036G Installation, Operation And Maintenance Manual

Packaged rooftop air conditioners precedent - electric/electric 3 to 10 tons - 60 hz
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Installation, Operation,
and Maintenance
Packaged Rooftop Air Conditioners
Precedent™ — Electric/Electric
3 to 10 Tons – 60 Hz
Model Numbers
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.
March 2018
TSC036G - TSC060G
TSC072H - TSC120H
THC036E - THC072E
SAFETY WARNING
RT-SVX22U-EN
THC037E - THC067E
THC048F - THC120F

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Summary of Contents for IR Ingersoll Rand TSC036G

  • Page 1 Installation, Operation, and Maintenance Packaged Rooftop Air Conditioners Precedent™ — Electric/Electric 3 to 10 Tons – 60 Hz Model Numbers TSC036G - TSC060G THC037E - THC067E TSC072H - TSC120H THC048F - THC120F THC036E - THC072E SAFETY WARNING Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
  • Page 2 Introduction Read this manual thoroughly before operating or servicing this unit. WARNING Proper Field Wiring and Grounding Warnings, Cautions, and Notices Required! Safety advisories appear throughout this manual as Failure to follow code could result in death or serious required. Your personal safety and the proper operation of injury.
  • Page 3 Introduction WARNING Follow EHS Policies! Failure to follow instructions below could result in death or serious injury. • All Ingersoll Rand personnel must follow Ingersoll Rand Environmental, Health and Safety (EHS) policies when performing work such as hot work, electrical, fall protection, lockout/tagout, refrigerant handling, etc.

  • Page 4: Table Of Contents

    Table of Contents Model Number Descriptions - 3 to 10 Tons (T/Y) Heat Units ......30 Horizontal Discharge Conversion (3 to 5 Ton Units) .
  • Page 5 Table of Contents ReliaTel™ Control Cooling without an Econo- (for Cooling Only Units) ....57 mizer ......50 Electromechanical Control Heating Operation Three-Stages of Cooling .
  • Page 6 Table of Contents ReliaTel™ Control ....70 System Status Checkout Procedure ..70 Method 1 ......70 Resetting Cooling and Ignition Lockouts 71 Zone Temperature Sensor (ZTS) Service Indi- cator...

  • Page 7: Model Number Descriptions - 3 To 10 Tons (T/Y)

    Model Number Descriptions - 3 to 10 Tons (T/Y) Digit 1 — Unit Type Digit 11 — Minor Design Digit 18 — Through-the-Base Sequence Provisions T = DX Cooling Y = DX Cooling, Gas Heat A = First Sequence Note: Applicable to Digit 1, T or Y B = Second Sequence Digit 2 —...
  • Page 8 Model Number Descriptions - 3 to 10 Tons (T/Y) Sensing Tube 5. Manual outside air damper will 18. Novar is not available with SZVAV 7 = Clogged Filter Switch, Fan Failure ship factory supplied within the products. Switch and Discharge Air Sensing unit, but must be field installed.
  • Page 9 Model Number Descriptions - 3 to 10 Tons (T/Y) Table 1. Digit 15 Selection Details Digit 15 = 0 Standard Efficiency 3 Phase (3 to 5 Ton) = Multispeed Direct Drive Motor 3 Phase (6 to 8.5 Ton) = Belt Drive 3 Phase (10 Ton) = Ultra High Efficiency Direct Drive Plenum Fan High Efficiency...

  • Page 10: Model Number Descriptions - 3 To 5 Tons (T/Y - 17 Plus)

    Model Number Descriptions - 3 to 5 Tons (T/Y - 17 Plus) Model Number Descriptions - 3 to 5 Tons (T/Y - 17 Plus) Digit 1 - Unit Type Digit 14 - Fresh Air Selection Digit 18 - Through the Base Provisions DX Cooling No Fresh Air...

  • Page 11: Model Number Notes

    Model Number Descriptions - 3 to 5 Tons (T/Y - 17 Plus) Novar Zone Temp Sensor 5. Through the base electric 21. Must be used with BACnet® open 14,19 (NOVAR 3051) required when ordering protocol. Condensate Drain Pan Overflow disconnect/circuit breaker Switch options.

  • Page 12: General Information

    General Information Unit Inspection Compressor Nameplate As soon as the unit arrives at the job site The nameplate for the compressors are located on the side of the compressor. • Verify that the nameplate data matches the data on the sales order and bill of lading (including electrical data).

  • Page 13: System Input Devices & Functions

    General Information Supply Fan Failure Input (Optional) +/- 5% of stroke. The actuator is spring returned to the closed position any time that power is lost to the unit. It is The Fan Failure Switch can be connected to sense indoor capable of delivering up to 25 inch pounds of torque and fan operation: is powered by 24 VAC.

  • Page 14: Low Pressure Control

    General Information Compressor Disable (CPR1/2) Power Exhaust Control (Optional) This input incorporates the low pressure control (LPC) of ReliaTel Control each refrigeration circuit and can be activated by opening The power exhaust fan is started whenever the position of a field supplied contact installed on the LTB. the economizer dampers meets or exceed the power If this circuit is open before the compressor is started, the exhaust setpoint when the indoor fan is on.

  • Page 15: Evaporator Frost Control

    General Information Remote Zone Sensor (BAYSENS016*) 40% and 60% by adjusting the DEHUMID setting on the ReliaTel Options Module. See Figure 58, p. This bullet type temperature sensor can be used for Duct Mounted Relative Humidity Sensor outside air (ambient) sensing, return air temperature sensing, supply air temperature sensing, remote (BAYSENS037*) temperature sensing (uncovered).

  • Page 16: Discharge Line Temp Switch (Dlts)

    FOS closes. Frostat™ is • The power supply circuit is not balanced with the standard on TSC036G-060G electromechanical control proper phase sequence of L1, L2, L3 for the 3 products. conductors of a 3 phase circuit.

  • Page 17: Installation

    Installation Pre-Installation Replace the heater elements if they present symptoms noted in item Step 2 Step 3 above. WARNING Fiberglass Wool! Exposition to glass wool fibers without all necessary PPE equipment could result in cancer, respiratory, skin or eye irritation, which could result in death or serious injury.

  • Page 18: Dimensions And Weights

    Dimensions and Weights Unit Clearances necessary to assure adequate serviceability, cataloged unit capacity, and peak operating efficiency. Figure 1, p. 18 illustrates the minimum operating and Providing less than the recommended clearances may service clearances for either a single or multiple unit result in condenser coil starvation, “short-circuiting”...
  • Page 19 Maximum unit & corner weights (lbs) and center of gravity dimensions (in.) - cooling models Maximum Model Unit Weights Corner Weights Center of Gravity (in.) Tons Model No. Shipping Length Width TSC036G TSC048G TSC060G TSC072H TSC090H TSC092H TSC102H TSC120H 1058 THC036E THC048E...
  • Page 20 Dimensions and Weights Figure 3. Rigging and center of gravity (a),(b) Table 4. Factory installed options (fiops)/accessory net weights (lbs) THC047E-067E TSC036G-060G THC048E-060E TSC072H-102H TSC120H THC036E, THC037E THC048F-060F THC072E/F THC074F-102F THC120F Net Weight Net Weight Net Weight Net Weight Net Weight...
  • Page 21 Dimensions and Weights Figure 4. Cooling and gas/electric — 3 to 5 tons Figure 7. Cooling and gas/electric —3 to 5 tons (a),(b) standard efficiency standard efficiency, 3 tons high efficiency— horizontal airflow supply/return TOP PANEL EVAPORATOR SECTION ACCESS PANEL CONDENSER FAN 3 3/16”...
  • Page 22 Dimensions and Weights Figure 10. Cooling and gas/electric —3 to 5 standard Figure 12. Cooling and gas/electric —3 to 5 tons efficiency, 3 tons high efficiency — downflow standard efficiency, 3 tons high efficiency— duct connections, field fabricated economizer & barometric relief damper hood 14 1/16”...
  • Page 23 Dimensions and Weights Figure 14. Gas/electric – 3 to 10 tons standard and high Figure 17. Cooling and gas/electric — 6 to 10 ton efficiency— gas pipe height (Y models standard efficiency units, 4 to 6 ton high (a),(b) only) efficiency units, 6(074)-8.5 (microchannel) high efficiency unit—horizontal airflow supply/ return...
  • Page 24 Dimensions and Weights Figure 20. Cooling and gas/electric —6 to 10 tons Figure 22. Cooling and gas/electric —6 to 10 tons standard efficiency, 4 to 10 tons high standard efficiency, 4 to 8.5 tons high efficiency— downflow duct connections, field efficiency—...
  • Page 25 Dimensions and Weights Figure 24. Cooling and gas/electric —7.5 tons (dual Figure 26. Cooling and gas/electric —10 tons high compressor standard efficiency) to 10 tons efficiency— downflow airflow supply/return, standard efficiency, 6 to 8.5 tons high through-the-base utilities efficiency— power exhaust 3 5/8”...
  • Page 26 Dimensions and Weights Figure 29. Cooling and gas/electric —10 tons high Figure 31. Cooling and gas/electric —10 tons high efficiency— roof curb efficiency— swing diameter for hinged door(s) option 18 1/2” 18 1/2” 470 MM 470 MM 6 5/8” 6 5/8” 168 MM 168 MM 56 3/8”...

  • Page 27: Installation

    Installation Foundation Figure 32. Cooling and gas/electric — 3 to 5 tons standard efficiency, 3 tons high efficiency— horizontal airflow supply/return WARNING Heavy Objects! 3 3/16” 81 MM Failure to follow instructions below or properly lift unit could result in unit dropping and possibly crushing operator/technician which could result in death or 23 1/4”...

  • Page 28: Roof Curb

    Installation Supply and return air openings as viewed from a Figure 37. 10 ton high efficiency unit - downflow supply downflow configuration are shown in the following & return air openings w/ through-the-base drawings. utilities Elbows with turning vanes or splitters are recommended 3 5/8”...

  • Page 29: Rigging

    Installation • Insure that the curb is level and square. The top surface Figure 39. View for base to roof curb alignment of the curb must be true to assure an adequate curb-to- THC120F on 60" x 84" roof curb unit seal.

  • Page 30: General Unit Requirements

    Installation 6. Lift the unit enough to allow the removal of base fork pocket protection components as shown in the WARNING following figures. Improper Unit Lift! 7. When 10 ton high efficiency units are installed on Failure to properly lift unit could result in unit dropping smaller existing roof curb (50"x 84") for replacement and possibly crushing operator/technician which could applications, do not remove alignment bracket.

  • Page 31: Horizontal Discharge Conversion (3 To 5 Ton Units)

    Installation different TCO-A limit switch, which is wire tied near the Note: Failure to use recommended sealant could result in terminal block in the heater compartment if horizontal unit performance loss. discharge configuration is used. If a unit is to be converted to a Horizontal discharge, the following conversion must be performed: Horizontal Discharge Conversion 1.

  • Page 32: Tco-A Instructions

    Installation Figure 45. Discharge air sensor Table 6. TCO-A replaced for horizontal duct configuration Cap assembly with insulation Unit Model Electric Heater Downflow application Number Model Number TCO-A location Secure with screw TSC120H4, THC074 BAYHTRA454 Right TSC120H4, THC092- BAYHTRA418, 427, Right 102F 436, 454...

  • Page 33: Return Air Smoke Detector

    4. Slide the top bracket down the copper sensing tube. For TSC036G-060G, and THC036-037E units insert the tab on the left side into the slot on the indoor coil block off and secure the right side of the bracket with one of the 3 screws removed in step 2.

  • Page 34: Main Electrical Power Requirements

    Installation Figure 51. Wireless communication interface - WARNING downflow Proper Field Wiring and Grounding Required! Failure to follow code could result in death or serious injury. All field wiring MUST be performed by qualified personnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards.

  • Page 35: Filter Installation

    Installation drawings. It can be converted to drain condensate out the trap condition which could result in condensate backup front side of the unit or through the base. due to “air lock” . To convert drain condensate out the front of Figure 53.

  • Page 36: Main Unit Power

    Installation Important: If the unit is not equipped with an optional Note: Black Gasket is shipped from the factory and is factory installed non-fused disconnect located in the literature Ship With bag in the control switch or circuit breaker, a field supplied box.

  • Page 37: Field Installed Control Wiring

    Installation Field Installed Control Wiring 2. Ensure that the AC control wiring between the controls and the unit’s termination point does not exceed three (3) ohms/conductor for the length of the run. WARNING NOTICE: Hazardous Voltage! Controls Using 24 VAC! Failure to disconnect power before servicing could result in death or serious injury.

  • Page 38: Dc Conductors

    Installation Note: Resistance in excess of 2.5 ohms per conductor can Figure 57. Typical field wiring diagrams for cause deviations in the accuracy of the controls. electromechanical thermostat Note: Ensure that the wiring between controls and the unit’s termination point does not exceed two and a half (2.5) ohms/conductor for the length of the run.
  • Page 39 Installation Figure 60. ReliaTel humidistat (dehumidification option) RT-SVX22U-EN...
  • Page 40 Installation Figure 61. Electromechanical control customer low voltage routing (all units except 10 ton high efficiency) Figure 62. ReliaTel control customer low voltage routing (all units except 10 ton high efficiency) RT-SVX22U-EN...
  • Page 41 Installation Figure 63. ReliaTel™ (without TBUE) control customer wire routing (10 ton high efficiency) COMMUNICATION ENTER CONTROL BOX THROUGH HOLE IN INTERFACE (COMM) OUTDOOR DIVIDER PANEL. SECURE FIELD ReliaTel OPTIONS WIRING WITH POP-IN WIRE TIE NEAR MODULE (RTOM) HOLE IN OUTDOOR DIVIDER PANEL. REFRIGERATION MODULE (RTRM) LOW-VOLTAGE...
  • Page 42 Installation Figure 65. Electromechanical (without TBUE) control customer wire routing (10 ton high efficiency) Figure 66. Electromechanical (with TBUE) control customer wire routing (10 ton high efficiency) RT-SVX22U-EN...

  • Page 43: Space Temperature Averaging (Reliatel™ Only)

    Installation Space Temperature Averaging • Example #1 illustrates two series circuits with two sensors in each circuit wired in parallel. The square of (ReliaTel™ only) any number of remote sensors is required. • Example #2 illustrates three sensors squared in a Space temperature averaging is accomplished by wiring a series/parallel circuit.
  • Page 44 Installation Figure 68. Typical field wiring diagrams for optional controls (ReliaTel™ only) BA YSENS075* BA YSENS075* BA YSENS108* BA YSENS106* BA YSENS110* BA YSENS119* BAYSENS073* BAYSENS074* BAYSENS075* ASYSTAT669A OPTIONAL REMOTE SENSOR RT-SVX22U-EN...
  • Page 45 Installation Table 10. Temperature vs. resistance Temperature Degrees F° Degrees C° Nominal Resistance -20° -28.9° 170.1 K - Ohms -15° -26.1° 143.5 K - Ohms -10° -23.3° 121.4 K - Ohms -5° -20.6° 103.0 K - Ohms 0° -17.8° 87.56 K - Ohms 5°...

  • Page 46: Pre-Start

    Pre-Start Use the checklist provided below in conjunction with the within the proper tolerances, notify the power company to “General Unit Requirements” checklist to ensure that the correct this situation before operating the unit. unit is properly installed and ready for operation. Excessive three phase voltage imbalance between phases will cause motors to overheat and eventually fail.

  • Page 47: Compressor Crankcase Heaters (Optional)

    Pre-Start proper operation of the crankcase heater is important to maintain an elevated compressor oil temperature during WARNING the “Off” cycle to reduce oil foaming during compressor Hazardous Voltage w/Capacitors! starts. Failure to disconnect power and discharge capacitors Oil foaming occurs when refrigerant condenses in the before servicing could result in death or serious injury.

  • Page 48: Test Modes

    Pre-Start three seconds. The Liteport LED located on the RTRM terminated by opening the main power disconnect switch. module will blink when the test mode has been initiated. Once the test mode has been terminated, the Liteport LED The unit can be left in any “Test” step for up to one hour will glow continuously and the unit will revert to the before it will automatically terminate, or it can be “System”...
  • Page 49 Pre-Start Cool 2 Connect red thermostat wire (R) to yellow thermostat wire (Y2). Heat 1 Connect red thermostat wire (R) to brown thermostat wire (W1). Heat 2 Connect red thermostat wire (R) to brown thermostat wire (W2). RT-SVX22U-EN...

  • Page 50: Unit Start-Up

    Unit Start-Up Sequence of Operation Units are offered with two control options, the low pressure control (LPC2), high pressure control electromechanical or ReliaTel™. (HPC2) and discharge line thermostat (TDL 2) are closed. When the CC2 contacts close, compressor (CPR2) starts to Note: Refer to the unit nameplate: If the 9th digit of the maintain the zone temperature to within ±...

  • Page 51: Reliatel™ Control Evaporator Fan Operation (For Cooling Only Units)

    Sequence of Operation Multi-Speed Indoor Motor When the unit is equipped with the optional clogged filter switch, wired between terminals J7-3 and J7-4 on the Note: Multi-speed indoor fan available only on 6, 7.5 (dual ReliaTel™ options module (RTOM), the RTRM produces an compressor) &...

  • Page 52: Supply Air Static Pressure Limit

    Sequence of Operation The supply fan will accelerate or decelerate as required to effect on building load. When the outside air temperature maintain the supply static pressure setpoint. is low and the building cooling load is low, the supply air setpoint can be raised, thereby preventing subcooling of Supply Air Static Pressure Limit critical zones.

  • Page 53: Variable Air Volume Applications (Single Zone Vav)

    Sequence of Operation zone temperature is at least 1.5°F below the MWU setpoint. used on single speed units in addition to a new When MWU is activated the VAV box output will be setpoint: Discharge Air Cool Setpoint limit. Discharge energized for at least 6 minutes to drive all boxes open, the Air Cool Setpoints will be customer selectable via a supply fan is commanded to full speed, and full heat (gas...

  • Page 54: Reliatel™ Control Dehumidification

    Sequence of Operation Single Zone VAV Heating or two-stage cooling takes priority over dehumidification, and a relative humidity sensor takes The indoor motor will vary the indoor motor speed to priority over a humidistat. optimize minimum fan speed for the cooling demand in all modes (Economizer Only, Economizer +1st Stage Cooling, Dehumidification Coil Purge Cycle or Economizer + 1st/2nd Stage Cooling).

  • Page 55: Economizer Set-Up

    Sequence of Operation The ECA continues to modulate the economizer damper (a) Factory settings open/closed to keep the mixed air temperature that is ReliaTel™ Control Heating Operation (for calculated by the RTRM. Cooling Only Units) If economizing is not possible, the ECA drives the damper to the minimum position setpoint when the indoor fan When the system switch is set to the “Heat”...

  • Page 56: Drain Pan Condensate Overflow Switch (Optional)

    Sequence of Operation a lock out by two fast flashes. An ignition lockout can be provides operating functions that are significantly reset by; different than conventional electromechanical units. 1. Opening for 3 seconds and closing the main power Electromechanical Control Cooling disconnect switch.

  • Page 57: Economizer Set-Up

    Sequence of Operation Economizer Set-Up Electromechanical Control Heating Operation (for Gas Units) Adjusting the minimum position potentiometer located on the unit economizer actuator (ECA) sets the required When the system switch is set to the “Heat” position and amount of ventilation air. the zone temperature falls below the heating setpoint, the Ignition module (IGN) initiates a heat cycle.

  • Page 58: Drain Pan Condensate Overflow Switch (Optional)

    Sequence of Operation Table 16. Ignition module diagnostics driven fans. Fan performance diagnostics can be easily recognized when these tables are used correctly. Flame sensed and gas valve not energized Five blinks or flame sensed and no call for heat. Before starting the SERVICE TEST, set the minimum position setpoint for the economizer to 0% using the Flame rollout (CBM failure, incorrect gas...

  • Page 59: Units With Belt Drive Indoor Fan

    Sequence of Operation Units with Belt Drive Indoor Fan Units with Direct Drive Indoor Fan - Electromechanical Control Much of the systems performance and reliability is closely associated with, and dependent upon having the proper Much of the systems performance and reliability is closely airflow supplied both to the space that is being associated with, and dependent upon having the proper conditioned and across the evaporator coil.
  • Page 60 Sequence of Operation Table 17. Direct drive plenum fan settings (rpm vs. b. Using the fan performance tables in the unit Service voltage) (continued) Facts, plot the actual RPM (step 1) and the BHP (step 2a) to obtain the operating CFM. Potentiometer Voltage Motor RPM 5.

  • Page 61: Plus Units With The Constant Cfm Direct Drive Indoor Fan

    Sequence of Operation label or in the unit Service Facts; record corresponding Table 18. Cfm vs. vdc voltage. Adjust potentiometer until output voltage Potentiometer across TP1 and ground achieves desired CFM setpoint. PWM% value Voltage (vdc) CFM/Ton 2. To increase voltage/CFM, turn potentiometer <0.1 clockwise.

  • Page 62: Supply Duct Static Pressure Control

    Sequence of Operation Light Commercial applications, supply air The initiation and termination setpoints are selectable temperature should not be set below 50°F . setpoints designated by Tracer. When the zone temperature meets or exceeds the VHR Relay Output termination setpoint while the unit is in an Occupied, During unoccupied mode, daytime warm-up (DWU), “Auto”...

  • Page 63: Return Air Smoke Detector

    Sequence of Operation Economizer Start-Up reset amount is given. A selectable reset amount of 0° F to 20°F via RTAM potentiometer or ICS is permissible for each type of reset. WARNING The amount of change applied to the supply air Live Electrical Components! temperature setpoint depends on how far the return air, zone, or outdoor air temperature falls below the reset...

  • Page 64: Compressor Start-Up

    Sequence of Operation 3 damper minimum positions based on fan speed. previous component start-up or until the desired start- Note: The RTEM will limit intermediate minimum up component Test is started. damper position to ensure proper ventilation based Electromechanical Control upon the low fan speed minimum damper position set Step Using the Service Test Guide perform the proper test mode...

  • Page 65: Dehumidification Option

    Sequence of Operation pressures to the operating pressure curve in the ReliaTel™ Control Service Facts. Using the Service Test Guide in Table 11, p. 3. Check system superheat. Follow the instruction listed continue the SERVICE TEST start-up procedure for on the superheat charging curve in the Service Facts. each compressor circuit.

  • Page 66: Maintenance

    Maintenance Once the new belts are installed, using a Browning or Gates tension gauge (or equivalent) illustrated in WARNING Figure 70, p. 66; adjust the belt tension as follows; Hazardous Service Procedures! 1. To determine the appropriate belt deflection; Failure to follow all precautions in this manual and on a.

  • Page 67: Monthly Maintenance

    Maintenance according to the instructions described in “Coil Table 19. Belt tension measurement and deflection Cleaning” later in this section. Deflection Force (Lbs.) • Manually rotate the condenser fan(s) to ensure free Belts Small movement and check motor bearings for wear. Verify Cross Super Steel Cable...

  • Page 68: Microchannel (Mche) Coils

    Maintenance compressor head pressure and amperage draw; Moreover, chemical cleaners are a risk factor to MCHE due evaporator water carryover; fan brake horsepower, due to to the material of the coil. The manufacturer does not increase static pressure losses; airflow reduction. recommend the use of chemical cleaners to clean microchannel coils.

  • Page 69: Annual Maintenance

    Maintenance Annual Maintenance c. maintain a minimum clearance of 6" between the sprayer nozzle and the coil. Clean and repaint any corroded surface. d. spray the solution perpendicular (at 90 degrees) to the coil face. Final Process 6. Spray the leaving-airflow side of the coil first; then spray the opposite side of the coil.

  • Page 70: Troubleshooting

    Troubleshooting • Heating status WARNING • Cooling status Hazardous Service Procedures! If a System failure is indicated, proceed to Step 4. If no failures are indicated, proceed to Step Failure to follow all precautions in this manual and on the tags, stickers, and labels could result in death or 4.

  • Page 71: Resetting Cooling And Ignition Lockouts

    Troubleshooting System Failure Zone Sensor LED 3 (Cool) “On” when the cooling cycle is operating. • Measure the voltage between terminals J6-9 & J6-6. “Off” when the cooling cycle terminates or the LED fails. • Normal Operation = approximately 32 VDC “Flashing”...

  • Page 72: Zone Temperature Sensor (Zts) Service Indicator

    Troubleshooting Test 1 - Zone Temperature Thermistor selection switch to the desired mode, i.e. Heat, Cool or Auto. (ZTEMP) Method 2 This component is tested by measuring the resistance between terminals 1 and 2 on the Zone Temperature To reset the system at the unit, cycle the unit power by Sensor.

  • Page 73: Relative Humidity Sensor Test

    Troubleshooting ReliaTel™ Refrigeration Module (RTRM) both directions, LED is open. If low in both directions, LED is shorted. Default Chart Method 3 If the RTCI loses input from the building management system, the RTRM will control in the default mode after To test LED’s with ZSM connected to unit, test voltages at approximately 15 minutes.

  • Page 74: Electromechanical Control

    Troubleshooting • 5 Flashes: OA Quality Sensor and use extreme care when performing service procedures with the electrical power energized. • 6 Flashes: OA Humidity Sensor Cooling Failure • 7 Flashes: OA Temp Sensor • 8 Flashes: MA Temp Sensor 1.

  • Page 75: Unit Economizer Control (Eca) Test Proce- Dures

    Troubleshooting Table 23. Low leak economizer sensor values Sensor Values Data Resistance Resistance Resistance Temp °F (K ohms) Temp °F (K ohms) Temp °F (K ohms) 26.097 17.847 12.435 25.383 17.382 12.126 24.690 16.930 11.827 24.018 16.491 11.535 23.367 16.066 11.252 22.736 15.654...

  • Page 76: Troubleshooting Procedures For Direct Drive Plenum Fan

    Troubleshooting Troubleshooting procedures for Direct Drive Plenum Fan Prior to troubleshooting, verify all wiring and wiring connections. The motor has internal protections that will shut down the motor before damage occurs. A power cycle is required to reset some of the internal protections. Before proceeding, power down unit for 1 minute and then power on.

  • Page 77: Unit Wiring Diagrams Numbers

    Unit Wiring Diagrams Numbers Note: Wiring diagrams can be accessed using e-Library by entering the diagram number in the literature order number search field or by contacting technical support. Table 24. Unit wiring diagram numbers Schematic Type Drawing Number Description Control ReliaTel™...
  • Page 78 Unit Wiring Diagrams Numbers Table 24. Unit wiring diagram numbers (continued) Schematic Type Drawing Number Description 460V and/or Power ReliaTel 1213-2406 THC120F, ReliaTel Controls 575V Power Electromechanical 230V 1213-1636 TSC(036-060)G3, Electromechanical Controls Power Electromechanical 230V 1213-2405 THC120F, Electromechanical Controls Power Electromechanical 230V 1213-2273...
  • Page 79 Unit Wiring Diagrams Numbers Table 24. Unit wiring diagram numbers (continued) Schematic Type Drawing Number Description 460V and/or Connection ReliaTel™ 4366-5182 THC(036-060)E,F (3-Phase), ReliaTel Controls, X13 IDM 575V 460V and/or T(S,H)C(036-060)E,F (3-Phase), ReliaTel Controls, Belt-Drive Connection ReliaTel™ 4366-1509 575V 460V and/or Connection ReliaTel™...

  • Page 80: Limited Warranty

    Limited Warranty Electric Air Conditioner residential application. Commercial use is any application where the end purchaser uses the product for other than personal, family or household purposes. TCD, TCH, TSC and THC (Parts Only) **A 5 year limited warranty is provided for the optional Models Less Than 20 Tons for Commercial "Low Leak"...
  • Page 82 Ingersoll Rand (NYSE:IR) advances the quality of life by creating comfortable, sustainable and efficient environments. Our people and our family of brands—including Club Car®, Ingersoll Rand®, Thermo King® and Trane®—work together to enhance the quality and comfort of air in homes and buildings; transport and protect food and perishables;...

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