Bryant 548J manual

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548J

n.Economizer controller shall accept a 2-10Vdc CO2 sensor input for IAQ/DCV control. In this mode, dampers shall modulate the outdoor-air damper to provide ventilation based on the sensor input.

o.Compressor lockout sensor shall open at 35_F (2_C) and closes at 50_F (10_C).

p.Actuator shall be direct coupled to economizer gear. No linkage arms or control rods shall be acceptable.

q.Economizer controller shall provide indications when in free cooling mode, in the DCV mode, or the exhaust fan contact is closed.

2.Two-Position Motorized Damper

a.Damper shall be a Two-Position Motorized Damper. Damper travel shall be from the full closed position to the field adjustable %-open setpoint.

b.Damper shall include adjustable damper travel from 25% to 100% (full open).

c.Damper shall include single or dual blade, gear driven dampers and actuator motor.

d.Actuator shall be direct coupled to damper gear. No linkage arms or control rods shall be acceptable.

e.Damper will admit up to 100% outdoor air for applicable rooftop units.

f.Damper shall close upon indoor (evaporator) fan shutoff and/or loss of power.

g.The damper actuator shall plug into the rooftop unit’s wiring harness plug. No hard wiring shall be required.

h.Outside air hood shall include aluminum water entrainment filter

3.Manual damper

a.Manual damper package shall consist of damper, air inlet screen, and rain hood which can be preset to admit up to 50% outdoor air for year round ventilation.

4.Head Pressure Control Package

a.Controller shall control coil head pressure by condenser-fan speed modulation or condenser-fan cycling and wind baffles.

b.Shall consist of solid-state control and condenser-coil temperature sensor to maintain condensing temperature between 90_F (32_C) and 110_F (43_C) at outdoor ambient temperatures down to -20_F (-29_C).

5.Condenser Coil Hail Guard Assembly

a.Shall protect against damage from hail.

b.Shall be louvered design.

6.Unit-Mounted, Non-Fused Disconnect Switch:

a.Switch shall be factory-installed, internally mounted.

b.National Electric Code (NEC) and UL approved non-fused switch shall provide unit power shutoff.

c.Shall be accessible from outside the unit

d.Shall provide local shutdown and lockout capability.

7.Convenience Outlet:

a.Powered convenience outlet.

(1.) Outlet shall be powered from main line power to the rooftop unit.

(2.) Outlet shall be powered from line side or load side of disconnect by installing contractor, as required by code. If outlet is powered from load side of disconnect, unit electrical ratings shall be UL certified and rated for additional outlet amperage.

(3.) Outlet shall be factory-installed and internally mounted with easily accessible 115-v female receptacle. (4.) Outlet shall include 15 amp GFI receptacles with independent fuse protection.

(5.) Voltage required to operate convenience outlet shall be provided by a factory-installed step-down trans- former.

(6.) Outlet shall be accessible from outside the unit.

b.Non-Powered convenience outlet.

(1.) Outlet shall be powered from a separate 115-120v power source.

(2.) A transformer shall not be included.

(3.) Outlet shall be factory-installed and internally mounted with easily accessible 115-v female receptacle. (4.) Outlet shall include 15 amp GFI receptacles.

(5.) Outlet shall be accessible from outside the unit.

8.Thru-the-Base Connectors:

a.Kits shall provide connectors to permit electrical connections to be brought to the unit through the unit base- pan.

b.Minimum of three connection locations per unit.

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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 TonsMotor Frame Size Fan Qty / Type 8.5 Tons548J*08 548J*09 Electric Heater NOM APP Part Number PWR Type Electric Heat Electrical DataSingle Point KIT Part Number Crsinglexxxxxx Unit With Pwrd C.OElectric Drive X13 5 speed/torque motor Cont. Electric Heat Electrical Data208/230 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 9001400 548J*05 105 115 EA dB1200 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 BHP1200 1300 1400 1500 1600 1700 1800 1900 2000 548J*05 Electric DRIVE, X13 MOTOR, 4 TON Horizontal Supply548J*05 Electric DRIVE, X13 MOTOR, 4 TON Vertical Supply 1500 1625 1750 1875 2000 2125 2250 2375 2500 548J*06 Electric DRIVE, X13 MOTOR, 5 TON Horizontal Supply548J*06 Electric DRIVE, X13 MOTOR, 5 TON Vertical Supply TON Horizontal Supply CFM RPM BHP 548J*05Available External Static Pressure IN. WG CFM RPM BHP 548J*06 1800 907 548J*071800 927 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.