Bryant 548J*14D Unit without Thru-Base Connection Kit, Heat Anticipator Settings

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548J*14D

Unit without Thru-Base Connection Kit —

Pass the thermostat control wires through the bushing on the unit end panel. Route the wire through the snap-in wire tie and up to the web bushing near the control box. Route the wire through the bushing and into the bottom left side of the control box after removing one of the two knockouts in the corner of the box. Using a connector at the control box to protect the wire as it passes into the control box. Pull the wires over to the terminal strip at the upper left corner of the Central Terminal Board (CTB). Use the connector at the control box and the wire tie to ensure that the thermostat wire is tight and will not be damaged by contact with the condenser coil. See Fig. 28.

NOTE: If thru-the-bottom connections accessory is used, refer to the accessory installation instructions for information on routing power and control wiring.

Heat Anticipator Settings —

Set heat anticipator settings at 0.14 amp for the first stage and 0.14 amp for second-stage heating, when available.

Electric Heaters

548J*14D units may be equipped with field-installed accessory electric heaters. The heaters are modular in design, with heater frames holding open coil resistance wires strung through ceramic insulators, line-break limit switches and a control contactor. One or two heater modules may be used in a unit.

Heater modules are installed in the compartment below the indoor (supply) fan outlet. Access is through the indoor access panel. Heater modules slide into the compartment on tracks along the bottom of the heater opening. See Fig. 29.

!CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage.

Not all available heater modules and single point boxes may be used in every unit. Use only those heater modules that are UL listed for use in a specific size unit. Refer to the label on the unit cabinet for the list of approved heaters and single point boxes.

C10018

Fig. 28 - Thermostat Wire Routing

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Contents Installation Instructions Safety Considerations Unit Dimensional Drawing Size 14 Unit Service Clearance Dimensional Drawing Plan for Unit LocationInspect Unit Plan for Sequence of Unit InstallationProvide Unit Support Roof Curb Details Field Fabricate Ductwork For Units with Accessory Electric HeatersRig and Place Unit Convert to Horizontal and Connect Ductwork when required Install Outside Air HoodEconomizer Hood Removal and Setup Factory Option Positioning on CurbDamper Assembly Install External Condensate Trap and Line Economizer Hood and Two-Position HoodField Power Supply Make Electrical ConnectionsMounting Position for Field Disconnects Over 100A Units Without Factory-Installed Disconnect Units with Factory-Installed DisconnectUnit Powered Convenience Outlet Wiring Field Control Wiring Factory-Option Thru-Base ConnectionsThermostat Units without Thru-Base ConnectionsHeat Anticipator Settings Unit without Thru-Base Connection KitHeater and Supplementary Fuses Single Point BoxesHeater Low-Voltage Control Connections Return Air Enthalpy Sensor Outdoor Air Enthalpy Control PNO 33CSENTHSWDifferential Enthalpy Control RTU-MP Control System RTU-MP System Control Wiring Diagram Supply Air Temperature SAT Sensor RTU-MP Controller Inputs and OutputsOutdoor Air Temperature OAT Sensor Space Temperature SPT SensorsField Connections EconoMi$er2RTU-MP T-56 Sensor Connections Indoor Air Quality CO2 sensorOutdoor Air Quality Sensor PNO 33ZCSENCO2 plus Connecting Discrete InputsWeatherproof enclosure Communication Wiring Protocols Local AccessRTU-MP Troubleshooting GeneralLEDs LEDs on the RTU-MP show the status of certain functionsSmoke Detectors SystemController SensorSupply Air Smoke Detector LocationsReturn Air with Economizer Completing Installation of Return Air Smoke Sensor Return Air Detector Shipping PositionUnit Wire/Fuse or Hacr Breaker Sizing Data NonePwrd C.O Adjust Factory-Installed Options EconoMi$er IV Occupancy SwitchInstall Accessories Pre-Start and Start-Up548J*14D 548J*14D Catalog No. II548J---07

548J*14D specifications

The Bryant 548J*14D is a highly efficient and versatile air conditioning unit designed to meet the varying demands of residential and light commercial applications. This model stands out due to its advanced engineering, energy-saving features, and reliable performance, making it an ideal choice for homeowners looking to enhance comfort without compromising on energy efficiency.

One of the main features of the Bryant 548J*14D is its excellent SEER (Seasonal Energy Efficiency Ratio) rating, which signifies its ability to provide cooling while consuming less energy. Optimized for efficiency, this unit employs a high-efficiency compressor that adjusts its output based on cooling demands, allowing it to use only the energy necessary to maintain a comfortable environment.

The unit’s all-aluminum evaporator coil ensures durability and resistance to corrosion, contributing to its longer lifespan and consistent performance. Additionally, the Bryant 548J*14D incorporates advanced refrigeration technologies for maximum heat transfer efficiency. This technology not only enhances cooling performance but also improves overall system reliability.

A key characteristic of the Bryant 548J*14D is its Whisper Series technology designed for quiet operation. The low-noise design minimizes sound levels, allowing for unobtrusive cooling in residential spaces while still ensuring effective airflow and cooling capacity. This makes it particularly favorable for installation in bedrooms and other noise-sensitive areas.

Another noteworthy aspect of the Bryant 548J*14D is its compatibility with the MyBryant smartphone app, which enables homeowners to monitor and control their HVAC systems remotely. This connectivity offers convenience and helps to optimize energy usage, as users can adjust settings based on their schedules and preferences.

Furthermore, the Bryant 548J*14D is designed with a robustness that allows it to withstand diverse weather conditions, ensuring reliable performance even in extreme climates. The unit’s compact design eases installation in various settings, whether it's on rooftops, near walls, or on concrete pads.

In summary, the Bryant 548J*14D is a cutting-edge air conditioning unit that combines energy efficiency, quiet operation, and advanced technologies. With its robust construction, smart features, and reliable performance, it stands as a valuable solution for anyone looking to enhance comfort and save on energy costs in their homes or light commercial environments.
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