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General| Brand | Trane |
|---|---|
| Model | 2TTB3 Series |
| Category | Accessories |
| Language | English |
Important safety information for installers and unit placement guidelines.
Unit elevation to manage snow/ice melt drainage and prevent ice buildup.
Avoiding snow drifts and maintaining airflow clearance for optimal unit performance.
Avoiding unit placement that may cause customer annoyance from condensation/fog.
Avoiding overhead structures that may cause icicles to form and damage the unit.
Instructions for removing basepan tabs during unit installation.
Specifications for the support pad, ensuring it's level and not in direct contact with structures.
Maintaining adequate clearance around the unit for airflow and service access.
Ensuring the top discharge area remains clear for at least five feet above the unit.
Guidelines for roof mounting, ensuring structural support and vibration isolation.
Maximum recommended length for refrigerant lines between outdoor and indoor units.
Limits on vertical lift for suction and liquid lines based on unit orientation.
Caution to ensure existing lines are brazed, not soldered.
Warning about hot compressor dome temperatures during operation.
Necessity of final refrigerant charge adjustment using Subcooling Charging procedure.
Explains factory shipped state and pressure tap port function.
Cautionary note regarding extreme care when opening the liquid line service valve.
Describes the closed position and full open turn for the gas line ball service valve.
Steps for preparing tubing, fitting, insulating, and avoiding contact.
Precautions to prevent heat damage to pressure tap valve core and basepan.
Using dry nitrogen purge and flux-free alloy for brazing factory connections.
Instructions for checking field brazed connections for leaks using pressurized dry nitrogen.
Detailed steps for evacuating refrigerant lines and indoor coil.
How to connect manifold gauges and vacuum pump for efficient evacuation.
Removing nitrogen charge and evacuating the system using a vacuum pump.
Specifies the types of wrenches needed for opening service valves.
Target micron readings and leak verification during evacuation.
Weighing in refrigerant based on nameplate data and line set adjustments.
Importance of replacing service valve caps to prevent leaks.
General safety warnings regarding electrical shock during installation.
Requirements for power wiring and grounding according to local codes.
Ensuring the power supply matches the equipment nameplate specifications.
Installing a separate disconnect switch and grounding the outdoor unit.
Using flexible conduit to mitigate noise from vibration transmission.
Recommends color-coded wiring for simplified connections between units.
Defines maximum total lengths for low voltage wiring based on wire gauge.
Guidelines for mounting the indoor thermostat and wiring it per diagrams.
Explains how the defrost control uses ambient and coil temperatures to determine defrost needs.
How to identify fault conditions via flashing lights on the defrost control.
Describes the function of TEST_COMMON, TST, and FRC_DFT pins.
Steps to verify normal operation and functionality of the defrost control system.
Steps to safely start the compressor, including sump heat activation.
Critical warning about connecting 24 VAC to the T1 (ODS-A) terminal.
Emphasizes following procedures for proper performance and charge adjustments.
Notes that electric heaters are installed per separate air handler instructions.
Describes factory-installed or field-installed start components for compressors.
Information on installing an outdoor thermostat and where to find data.
Requirement to add a salt shield kit when installing within one mile of saltwater.
Chart for identifying primary and secondary causes of system faults.
Diagrams illustrating typical wiring connections for heat pump and AC systems.
Notes regarding power supply, grounding, and low voltage wire gauge for diagrams.
Recommended charging method for systems with indoor TXVs above 55°F ambient.
Recommended indoor temperature range (70-80°F) for accurate charging.
Ensuring the system stabilizes for 20 minutes before taking measurements.
How to measure liquid line temperature and pressure at service valves.
Calculating total refrigerant line length and height for charge adjustment.
Locating and using the subcooling charging table to adjust refrigerant charge.
Applying corrections to the subcooling table based on line length and rise.
Provides overall dimensions in millimeters and inches for unit identification.
Illustrates the service panel area and required clearances for electrical and refrigerant components.
Details the liquid and gas line service valve connections and their fittings.
Table listing dimensions (A-K) for various TTB3/TWB3 models.
Diagrams showing mounting hole locations for different base sizes (2, 3, 4).
Note directing users to page 7 for model base size information.
Verification of refrigerant lines for leaks after installation.
Ensuring suction lines and fittings are properly insulated.
Confirming that all refrigerant lines are secured and properly isolated.
Checking that masonry passages are sealed to prevent mortar contact with tubing.
Verifying the tightness of all electrical connections.
Observing the outdoor fan for clearance and smooth operation during its cycle.
Ensuring the indoor coil drain line drains freely.
Confirming that supply registers and return grilles are open and unobstructed.
Checking that the return air filter is installed.
Verifying thermostat accuracy and adjusting per instructions.
Ensuring the correct speed tap is used for the indoor blower motor.
Operating the complete system in each mode to ensure safe operation.
