Bryant 548J Economizer dry-bulb or enthalpy, CO2 Sensor, Smoke Detectors, Louvered Hail Guards

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FACTORY OPTIONS AND/OR ACCESSORIES (cont.)

548J

Economizer (dry-bulb or enthalpy)

Economizers save money. They bring in fresh, outside air for ventilation; and provide cool, outside air to cool your building. This is the preferred method of low-ambient cooling. When coupled to CO2 sensors, Economizers can provide even more savings by coupling the ventilation air to only that amount required.

Economizers are available, installed and tested by the factory, with either enthalpy or dry-bulb temperature inputs. There are also models for electromechanical as well as direct digital controllers. Additional sensors are available as accessories to optimize the economizers.

Economizers include gravity controlled, barometric relief equalizes building pressure and ambient air pressures. This can be a cast effective solution to prevent building pressurization.

CO2 Sensor

Improves productivity and saves money by working with the economizer to intake only the correct amount of outside air for ventilation. As occupants fill your building, the CO2 sensor detects their presence through increasing CO2 levels, and opens the economizer appropriately.

When the occupants leave, the CO2 levels decrease, and the sensor appropriately closes the economizer. This intelligent control of the ventilation air, called Demand Control Ventilation (DCV) reduces the overall load on the rooftop, saving money.

Smoke Detectors

Trust the experts. Smoke detectors make your application safer and your job easier. Bryant smoke detectors immediately shut down the rooftop unit when smoke is detected. They are available, installed by the factory, for supply air, return air, or both.

Louvered Hail Guards

Sleek, louvered panels protect the condenser coil from hail damage, foreign objects, and incidental contact.

Convenience Outlet (powered or un-powered)

Lower service bills by including a convenience outlet in your specification. Bryant will install this service feature at our factory, powered. Provides a convenient, 15 amp, 115V GFCI receptacle.

Non-fused Disconnect

This OSHA-compliant, factory-installed, safety switch allows a service technician to locally secure power to the rooftop.

Power Exhaust Pressure Relief

Superior internal building pressure control. This field-installed accessory may eliminate the need for costly, external pressure control fans.

RTU-MP, Multi-protocol Controller

Connect the rooftop to an existing BAS without needing complicated translators or adapter modules using the RTU-MP controller. This new controller speaks the 4 most common building automation system languages (Bacnet, Modbus, N2, and Lonworks). Use this controller when you have an existing BAS.

Time Guard II Control Circuit

This accessory protects your compressor by preventing short-cycling in the event of some other failure, prevents the compressor from restarting for 30 seconds after stopping. Not required with RTU-MP or authorized commercial thermostats.

Filter or Fan Status Switches

Use these differential pressure switches to detect a filter clog or indoor fan motor failure. When used in conjunction with a compatible unit controller/thermostat, the switches will activate an alarm to warn the appropriate personnel.

Motorized 2-Position Damper

The new Bryant 2-position, motorized outdoor air damper admits up to 100% outside air. Using reliable, gear-driven technology, the 2-position damper opens to allow ventilation air and closes when the rooftop stops, stopping unwanted infiltration.

Manual OA Damper

Manual outdoor air dampers are an economical way to bring in ventilation air. The dampers are available in 25% and 50% versions.

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Contents Product Data Table of Contents Features and Benefits Model Number Nomenclature Option Accessory Factory Options AND/OR AccessoriesFACTORY-INSTALLED Options and FIELD-INSTALLED Accessories FieldFilter or Fan Status Switches Convenience Outlet powered or un-poweredPower Exhaust Pressure Relief Economizer dry-bulb or enthalpyThru-the-Base Connections Motormaster Head Pressure ControllerAlternate Motors and Drives Electric HeatersARI Cooling Rating Tables Minimum Maximum Airflows Electric Heat Sound Performance TablePhysical Data Tons8.5 Tons 548J*08 548J*09Motor Frame Size Fan Qty / Type Electric Heater NOM APP Part Number PWR Type Electric Heat Electrical DataSingle Point KIT Part Number Crsinglexxxxxx Unit With Pwrd C.OCont. Electric Heat Electrical Data 208/230Electric Drive X13 5 speed/torque motor 105A00 16.0 12.0/14.7 038A00 Crheaterxxxxxx Without P.E With P.ECont. Electric Heat Electrical Data Tons Cool460 115A00 33.0 30.3 050A00 575Weights & Dimensions Dimensions 548JDimension Condition Unit disconnect is mounted on panel356 548J*04-07A 610C08679 C08680 356 Application Data Selection Procedure with 548J*07 Example 548J*04 105 115 EA dB Ambient TemperatureCooling Capacities 900548J*05 105 115 EA dB 12001400 2250 548J*06 105 115 EA dB1500 25002100 548J*07 105 115 EA dB1800 24003375 548J*08 105 115 EA dB2625 37502975 548J*09 105 115 EA dB2550 3400548J*04 Temperature AIR Entering Outdoor Coil F db at 70% rhHeating Capacities ReturnHeating Capacity Heating Capacity Tons 548J*08Static Pressure Adders Factory Options and/or Accessories General fan performance notes548J*04 Electric DRIVE, X13 MOTOR, 3 TON Vertical Supply FAN Performance548J*04 Electric DRIVE, X13 MOTOR, 3 TON Horizontal Supply Speed Torque CFM ESP BHP548J*05 Electric DRIVE, X13 MOTOR, 4 TON Horizontal Supply 548J*05 Electric DRIVE, X13 MOTOR, 4 TON Vertical Supply1200 1300 1400 1500 1600 1700 1800 1900 2000 548J*06 Electric DRIVE, X13 MOTOR, 5 TON Horizontal Supply 548J*06 Electric DRIVE, X13 MOTOR, 5 TON Vertical Supply1500 1625 1750 1875 2000 2125 2250 2375 2500 TON Horizontal Supply 548J*05 Available External Static Pressure IN. WG CFM RPM BHPCFM RPM BHP 548J*06 548J*07 1800 9271800 907 2250 788 847 548J*082250 509 2250 5282550 806 863 548J*092550 468 546 2550 495 570Pulley Adjustment Unit MOTOR/DRIVE Combo Motor Pulley Turns OpenECONOMIZER, Barometric Relief and PE Performance 2000 1000548J*05 Stage Cooling Electrical Information548J*04 Stage Cooling 548J*06 Stage Cooling548J*09 Stage Cooling Tons 548J*07 Stage Cooling548J*08 Stage Cooling Tons Range RLA LRAUnit IFM Without P.E With P.E MCA/MOCP Determination Without C.O. or Unpwrd C.OELEC. HTR Type FLA DISC. SizeType FLA Cont. MCA/MOCP Determination Without C.O. or Unpwrd C.OELEC. HTR Unit MCA79/84 70/7476/82 46/48See Unit IFM Type NOM STD MEDHigh FLA DISC. Size MCA Mocp LRA78/84 41.5 19765/68 43.8 23482/88 45.7 20569/72 48.0 242MCA/MOCP Determination with Pwrd C.O ELEC. HTR With Pwrd C.O Unit IFM Without P.E With P.E113 Cont. MCA/MOCP Determination with Pwrd C.O111 10820.2 46.533.3 29.2Electric Heater With Pwrd C.O Without P.E With P.E Electric Heater With Pwrd C.O Unit IFM Without P.E With P.E 88/93 50.5 21074/78 52.8 247Typical Wiring Diagrams Stage Cooling Typical Power DiagramC09065 Multi-Protocol Option Diagram Stage Typical Wiring Diagram C09064 Sequence of Operation Cycle-LOCprotection Automatic changeoverContinuous air circulation Emergency heatGuide Specifications 548J*04-09 Hvac Guide Specifications23 09 33 Electric and Electronic Control System for Hvac 23 09 93 Sequence of Operations for Hvac Controls23 40 13 Panel Air Filters 23 81 19 Self-Contained Air Conditioners548J 548J 548J 548J 548J Catalog No. PDS548J---01

548J specifications

The Bryant 548J is a high-efficiency gas furnace that combines advanced features and technologies to provide exceptional heating performance. Designed for residential applications, the furnace is notable for its ability to deliver consistent warmth while ensuring energy efficiency and reliability.

One of the main features of the Bryant 548J is its ultra-high efficiency rating, which allows homeowners to save significantly on energy costs. With an Annual Fuel Utilization Efficiency (AFUE) rating of up to 96.5%, this furnace is designed to convert a large portion of fuel into usable heat. This is a remarkable characteristic that not only reduces utility bills but also contributes to a lower environmental footprint.

The 548J is equipped with a modulating gas valve and a variable-speed blower motor. The modulating gas valve enables the furnace to adjust its heating output based on real-time temperature demands, ensuring a more precise heating experience. This results in reduced temperature fluctuations within the home, providing a comfortable living environment. The variable-speed blower motor works in tandem with the modulating valve, facilitating improved air circulation and efficient temperature control.

Additionally, the Bryant 548J features a durable and compact design, making it suitable for various installation spaces. Its quality construction ensures longevity, while the optional stainless steel heat exchanger enhances its reliability. The furnace also includes a quiet operation mode, which minimizes noise levels, ensuring that the unit works quietly in the background without disturbing the household's peace.

Integration with smart home technology is another advantage of the Bryant 548J. Homeowners have the option to connect the furnace to a Wi-Fi-enabled thermostat, allowing for remote temperature control and monitoring. This feature offers enhanced convenience and the ability to optimize energy use according to a homeowner’s schedule.

For peace of mind, the Bryant 548J comes with a range of warranties, protecting the consumer's investment. Bryant’s commitment to quality is reflected in their extensive primary heating testing procedures, which ensure that each unit meets strict performance criteria before it reaches the customer.

In summary, the Bryant 548J is an efficient and reliable gas furnace that embodies advanced heating technology. With features such as high AFUE ratings, modulating gas valves, variable-speed blowers, and smart home compatibility, it stands out as a formidable option for modern residential heating solutions.
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