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General| Model | THC072E |
|---|---|
| Category | Air Conditioner |
| Brand | Trane |
| Refrigerant Type | R-410A |
| Voltage | 208/230V |
| Phase | Single |
| Operating Range (Cooling) | 55°F - 125°F |
Field wiring must be performed by qualified personnel to avoid fire and electrocution hazards.
Technicians must wear PPE when working with hazardous chemicals or in arc flash risk areas.
Discusses the impact of certain chemicals on the ozone layer and Trane's stance on responsible refrigerant handling.
Emphasizes the importance of responsible refrigerant handling and technician certification as per the Clean Air Act.
Procedures for inspecting the unit upon arrival for shipping damage and verifying nameplate data.
Precautions to prevent condensate formation in electrical compartments and motors during storage.
Location and data included on the unit's Mylar nameplate.
Location of compressor nameplates.
Defines the first digit indicating the unit type, e.g., DX Cooling.
Defines the second digit indicating the unit's efficiency rating, Standard or High.
Defines the third digit indicating the airflow configuration, Convertible.
Defines the first digit indicating the unit type, e.g., DX Cooling, Gas Heat.
Defines the second digit indicating the unit's efficiency rating, Standard or High.
Defines the third digit indicating the airflow configuration, Convertible.
Location of the barcode decal for condenser coil part identification.
Overview of unit testing, coil materials, fan type, and control system options.
Details the function and operation of the Economizer Control Actuator for electromechanical and ReliaTel controls.
Describes basic input devices used within the RTRM network for unit control.
Module for ICS building management system integration via Trane communication protocol.
Module for ICS building management system integration via LonTalk protocol.
Module for ICS building management system integration via BACnet protocol.
Monitors various unit functions like fan proving, filter status, and temperature for ReliaTel systems.
Input that activates low pressure control to shut off the compressor.
Detects low refrigerant pressure and shuts off the compressor to prevent damage.
Detects high refrigerant pressure and shuts off the compressor to prevent damage.
Controls the power exhaust fan based on economizer damper position.
Selectable function to alternate compressor operation for even wear.
Electronic sensor for system switch and fan settings, manual/auto changeover control.
Field-installed sensor for controlling enhanced dehumidification options.
Electronic sensor for remote zone sensing and timed override.
Electronic sensor for single setpoint and timed override.
Bullet type sensor for ambient, return, or supply air sensing.
Wireless electronic sensor with multiple system settings and dual setpoint capability.
Input that incorporates the Frostat™ control to prevent evaporator coil icing.
Prevents compressor overheating by sensing discharge line temperature.
Detects smoke in air ducts and initiates a high limit shutdown.
Monitors three-phase power supply for balance and correct phase sequence.
Offers supply fan modulation and discharge air temperature control for space temperature maintenance.
Illustrates minimum operating and service clearances for single and multiple unit installations.
Covers safety precautions, fiberglass wool handling, and hazardous voltage warnings before installation.
Outlines general procedures including handling heavy objects and proper unit lifting techniques.
Guidance on installing units at ground level or on rooftops, including footing requirements.
Specifics for installing units at ground level to elevate them above the snow line.
Illustrates supply and return air openings and attachment recommendations.
Instructions for selecting, verifying, and installing roof curbs for downflow applications.
Specifics for installing units in a downflow configuration onto a roof curb.
Provides illustrations and instructions for safely rigging and lifting the unit.
A checklist summarizing essential steps for successful commercial unit installation.
Ensures the economizer is correctly positioned and set up.
Notes on potential limit switch changes for horizontal airflow applications.
Step-by-step guide for converting 3-5 ton units to horizontal discharge airflow.
Step-by-step guide for converting 6-10 ton units to horizontal discharge airflow.
Procedure for replacing the TCO-A limit control for specific electric heater configurations.
Conversion instructions for the return air smoke detector for horizontal discharge.
Important safety warnings and guidelines for connecting main unit power.
Emphasizes mandatory adherence to NEC and local codes for safe field wiring and grounding.
Verification steps for power supply, junction box, and circuit continuity for electric heat.
Guidelines for installing zone thermostats and control wiring.
Instructions for converting condensate drain to front or base outlet and trap installation.
Guidance on filter quantity, access, and the importance of not operating without filters.
Safety warnings and guidelines for properly sizing and installing unit supply power wiring.
Details the location of electrical service entrance and power wiring connections.
Illustrates electrical service location for through-the-base options.
Provides layout for control options and conductor requirements.
Information on 24-volt control power transformers and their internal circuit breakers.
Guidelines for installing 24 VAC control wiring, including conductor sizing and routing.
Guidelines for connecting DC analog signals, including conductor sizing and routing.
Details wiring for zone sensor modules with resistance values.
Wiring examples for connecting multiple HVAC units' smoke detectors to a single power supply.
Explains how to wire multiple remote sensors for space temperature averaging.
Discusses the importance of balanced three-phase power supply and how to calculate imbalance.
Explains how to check and correct electrical phasing for proper motor rotation.
Importance of crankcase heaters for oil temperature maintenance and preventing foaming.
Overview of RTRM self-diagnostics and test procedures for unit operation.
Describes three methods (Step, Resistance, Auto) for testing unit components.
Provides specific test procedures for electromechanical controls, including fan and economizer tests.
Steps to measure and adjust system airflow to meet performance requirements.
Guidance on fan motor operation, speed changes, and performance verification for 5-tap direct drive fans.
Procedures for adjusting fan speed via motor sheave and checking performance.
Details fan speed adjustment and performance verification for electromechanical units.
Covers fan speed adjustment and performance verification for ReliaTel units.
Explains how to set minimum airflow using RTOM potentiometer for constant CFM units.
Procedures for adjusting airflow on 17 Plus units using Service Test mode.
Discusses supply air temperature control strategies for VAV systems.
Explains how RTRM maintains selectable supply air temperature during occupied modes.
Details how economizer impacts supply air cooling and freeze-up prevention.
Information on VHR relay output timing for fan operation in heating modes.
Control logic when no night setback panel or ICS is used for unoccupied cooling.
Control logic when no night setback panel or ICS is used for unoccupied heating.
Activation and control of Morning Warm-up function based on zone temperature.
Activation and control of Daytime Warm-up function based on zone temperature.
How the unit controls supply duct static pressure using a transducer and setpoint.
Methods for resetting supply air temperature based on return, zone, or outdoor air temperature.
Functionality and airflow requirements for the return air smoke detector.
Procedures for starting up the economizer, including damper position settings.
Steps for starting compressors, verifying rotation, and checking operating pressures.
Procedures for testing the dehumidification option, including monitoring suction pressure and fan speed.
Final checks after start-up, including programming, panel security, and power connection.
Detailed instructions for adjusting fan belt tension using a tension gauge.
Routine checks for electrical safety, filters, and general unit condition.
Guidance on inspecting, cleaning, or replacing return air filters.
Procedures for maintaining the return air smoke detector for proper function.
Specific maintenance checks to perform during the cooling season.
Specific maintenance checks to perform during the heating season.
Instructions for cleaning evaporator and condenser coils to maintain efficiency.
Specific cleaning instructions for microchannel coils, warning against detergents.
Procedures for cleaning RTPF coils using chemicals and proper PPE.
Steps for reinstalling hail guards after coil cleaning.
Recording unit data and performing final checks for reference.
Steps for checking RTRM diagnostics and system status before power down.
Methods for checking system status via ZSM LEDs or voltage readings.
Identifies potential causes of cooling failures and test procedures.
Troubleshooting steps for service failures related to fan, filters, or condensate overflow.
Addresses failures occurring during simultaneous heating and cooling operations.
Procedures for resetting cooling and heating lockouts via space or unit controls.
Explains the function of the ZSM SERVICE LED as a generic indicator.
Function of the clogged filter switch LED indicator.
Function of the fan failure switch and its LED indicator.
Indicates condensate overflow and unit shutdown.
Procedures for testing the ZTS thermistor and setpoint potentiometers.
Testing ZTEMP resistance at typical indoor temperatures.
Testing CSP and HSP potentiometers using terminals and resistance values.
Measuring resistance for system mode and fan selection switches.
Methods for testing unit status LEDs using a multimeter.
Testing the mA output signal of the Relative Humidity Sensor.
Testing serial communication voltage and unit operation via ZSM.
Information on RTRM default mode operation when inputs are lost.
Temporary operation procedure when a zone sensor is disconnected.
Troubleshooting economizer control based on ECA LED indicators and error codes.
Verifying economizer status via ECA LED and interpreting error codes.
Troubleshooting cooling and heating failures for electromechanical controls.
Step-by-step tests to diagnose problems within the unit or the ECA.
Verifying the functionality of the economizer actuator (ECA).
Testing ECA resistors and sensors, including Mixed Air Sensor and Outdoor Air Switch.
Steps to troubleshoot issues with the direct drive plenum fan motor.
Lists drawing numbers for ReliaTel and Electromechanical control wiring diagrams.
Lists drawing numbers for ReliaTel and Electromechanical power wiring diagrams.
Details the limited warranty for electric air conditioners used in residential applications.
Details the limited warranty for electric air conditioners used in commercial applications.
