Bryant installation instructions Physical Data, Unit Size 548D

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Table 1 — Physical Data

UNIT SIZE 548D

 

090

 

102

 

120

NOMINAL CAPACITY (tons)

 

71/2

 

81/2

 

10

OPERATING WEIGHT (lb)

 

 

 

 

 

 

Unit

 

 

 

 

 

 

Al/Al*

 

940

 

965

 

1015

Economizer

 

 

 

 

 

 

Durablade

 

44

 

44

 

44

EconoMi$er

 

62

 

62

 

62

Roof Curb†

 

143

 

143

 

143

COMPRESSOR

 

 

 

Hermetic Scroll

 

 

Quantity

 

2

 

2

 

2

 

 

 

Oil (oz)

 

45 ea

 

62 ea

 

54 ea

REFRIGERANT TYPE

 

 

 

R-22

 

 

Operating Charge (lb-oz)

 

 

 

 

 

 

 

 

 

 

 

 

Circuit 1

 

5-14

 

8- 6

 

7-14

Circuit 2

 

5-13

 

8-13

 

8- 3

OUTDOOR COIL

 

Enhanced Copper Tubes, Aluminum Lanced Fins, Acutrol™ Feed Device

Rows...Fins/in.

 

1...17

 

2...17

 

2...17

 

 

 

Total Face Area (sq ft)

 

20.50

 

18.00

 

18.30

OUTDOOR FAN

 

 

 

Propeller Type

 

 

Nominal Cfm

 

6500

 

6500

 

6500

 

 

 

Quantity...Diameter (in.)

 

2...22

 

2...22

 

2...22

Motor Hp...Rpm

 

1/4...1100

 

1/4...1100

 

1/4...1100

Watts Input (Total)

 

600

 

600

 

600

INDOOR COIL

 

Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Acutrol Fixed Orifice Metering Feed Device

Rows...Fins/in.

 

3...15

 

3...15

 

3...15

 

 

 

Total Face Area (sq ft)

 

8.0

 

8.0

 

11.1

INDOOR FAN

 

 

 

Centrifugal Type

 

 

Quantity...Size (in.)

Std

1...15 x 15

 

1...15 x 15

 

1...15 x 15

 

 

 

Alt

1...15 x 15

 

 

1...15 x 15

Type Drive

Std

Belt

 

Belt

 

Belt

Nominal Cfm

Alt

Belt

 

 

Belt

 

3000

 

3600

 

4000

Maximum Continuous Bhp

Std

2.40

 

2.40

 

2.40

 

Alt

 

 

2.90

Motor Frame Size

Std

56

 

56

 

56

 

Alt

 

 

56

Nominal Rpm High/Low

Std

 

 

 

Alt

 

 

Fan Rpm Range

Std

590-840

 

685-935

 

685- 935

Motor Bearing Type

Alt

685-935

 

 

835-1085

 

Ball

 

Ball

 

Ball

Maximum Allowable Rpm

 

2100

 

2100

 

2100

Motor Pulley Pitch Diameter Min/Max (in.)

Std

2.4/3.4

 

2.8/3.8

 

2.8/3.8

 

Alt

2.8/3.8

 

 

3.4/4.4

Nominal Motor Shaft Diameter (in.)

Std

5/8

 

5/8

 

5/8

 

Alt

 

 

7/8

Fan Pulley Pitch Diameter (in.)

Std

7.0

 

7.0

 

7.0

 

Alt

7.0

 

 

7.0

Belt, Quantity...Type...Length (in.)

Std

1...A...48

 

1...A...48

 

1...A...48

 

Alt

1...A...48

 

 

1...A...48

Pulley Center Line Distance (in.)

Std

16.75-19.25

 

16.75-19.25

 

15.85-17.50

Speed Change per Full Turn of

Alt

15.75-19.25

 

 

15.85-17.50

 

 

 

 

 

 

Movable Pulley Flange (rpm)

Std

50

 

50

 

50

Movable Pulley Maximum Full Turns

Alt

50

 

 

50

 

 

 

 

 

 

From Closed Position

Std

5

 

5

 

5

 

Alt

5

 

 

5

Factory Setting

Std

5

 

5

 

5

 

Alt

5

 

 

5

Factory Speed Setting (rpm)

Std

590

 

685

 

685

Fan Shaft Diameter at Pulley (in.)

Alt

685

 

 

835

 

1

 

1

 

1

HIGH-PRESSURE SWITCH (psig)**

 

 

 

 

 

 

Standard Compressor Internal Relief (Differential)

 

450 ± 50

 

 

Cutout

 

 

428

 

 

Reset (Auto.)

 

 

320

 

 

LOSS-OF-CHARGE SWITCH (psig)**

 

 

 

 

 

 

Cutout

 

 

7 ± 3

 

 

Reset (Auto.)

 

 

22 ± 5

 

 

FREEZE-PROTECTION THERMOSTAT (F)**

 

 

 

 

 

 

Opens

 

 

30 ± 5

 

 

Closes

 

 

45 ± 5

 

 

OUTDOOR-AIR INLET SCREENS

 

 

 

Cleanable

 

 

Quantity...Size (in.)

 

 

 

1...20 x 25 x 1

 

 

 

 

 

 

1...16 x 25 x 1

 

 

RETURN-AIR FILTERS

 

 

 

Throwaway

 

 

Quantity...Size (in.)

 

4...16 x 20 x 2

 

4...16 x 20 x 2

 

4...20 x 20 x 2

 

 

 

LEGEND

Al — Aluminum

Bhp — Brake Horsepower

*Indoor coil fin material/outdoor coil fin material. †Weight of 14-in. roof curb.

**Requires an accessory or optional controls upgrade kit.

NOTE: The 548D units have a loss-of-charge switch located in the liquid line avail- able as an option or an accessory. (Standard on 120 units.)

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Contents Installation ContentsSafety Considerations Provide Unit SupportRoof Curb Details IV. RIG and Place Unit III. Install Condensate Drain Line and External TrapII. Field Fabricate Ductwork PositioningUnit MAX Dimensions Weight Base Unit Dimensions Physical Data Unit Size 548D575-3-60 Field Power SupplyMake Electrical Connections 460-3-60Type Electrical Data Units Without Electrical Convenience OutletSIZE† RLA LRA FLAElectrical Data Units With Electrical Convenience Outlet Min81/2 Tons FLA VI. Adjust FACTORY-INSTALLED Options Unit Voltage 208/230 460 575Stage Durablade Economizer Installation Durablade Economizer Damper Minimum Position Setting EconoMi$er Component Locations Rear EconoMi$er Flange Installation EconoMi$er Wiring Wiring Diagram for Power Exhaust System Default Potentiometer Settings VII. Adjust INDOOR-FAN SpeedChangeover Set Points Typical Belt-Drive Motor Mounting for Size Unit INDOOR-FAN Maximum Acceptable Fan Rpm at Motor Pulley SettingsIndoor-Fan Motor Performance Continuous BHPFan Performance 548D090 Vertical Discharge Units Standard Motor Belt DriveFan Performance 548D102 Vertical Discharge Units Fan Performance 548D120 Vertical Discharge Units 548D120 10 Tons Standard and Alternate Motors Belt DriveFan Performance 548D090 Horizontal Discharge Units Fan Performance 548D102 Horizontal Discharge Units Fan Performance 548D120 Horizontal Discharge Units Standard and Alternate Motors Belt DrivePRE-START-UP Internal WiringVI. Refrigerant Service Ports START-UP Unit PreparationCooling IX. Adjust GAS InputXII. Safety Relief XI. HeatingDefrost Service CleaningCooling, Units With EconoMi$er Indoor CoilII. Lubrication IV. Economizer Adjustment Refrigerant ChargeCooling Charging Chart 548D102 Troubleshooting Heating and Cooling TroubleshootingProblem Cause Remedy IFO Durablade Economizer TroubleshootingIFC OATTo minimum position Damper does not openEconoMi$er operation limited Damper positionTypical Wiring Diagram Must Voltage Page Preliminary Information START-UP ChecklistTemperatures III. START-UP Electrical

548D specifications

The Bryant 548D heat pump stands out in the HVAC market for its robust performance, energy efficiency, and advanced technology. Known for its reliability, this particular model is designed to provide optimal heating and cooling for both residential and light commercial applications.

One of the standout features of the Bryant 548D is its variable-speed compressor, which allows for precise temperature control and enhances comfort levels in any environment. This technology enables the 548D to operate efficiently at different speeds, adjusting its output based on the heating or cooling demand. As a result, homeowners can enjoy consistent temperature regulation without the wide fluctuations typical of single-stage systems.

In addition to the variable-speed compressor, the Bryant 548D utilizes advanced refrigerant technology. It employs the environmentally friendly Puron refrigerant, which not only improves the unit's efficiency but also reduces its carbon footprint. This makes the 548D a sustainable choice for those looking to minimize their environmental impact while still enjoying superior heating and cooling performance.

Another key characteristic of the Bryant 548D is its impressive energy efficiency rating, often exceeding the minimum requirements set by the Department of Energy. With a high Seasonal Energy Efficiency Ratio (SEER) for cooling in warmer months and an excellent Heating Seasonal Performance Factor (HSPF), the 548D minimizes energy consumption while maximizing comfort.

The 548D also features Quiet Operation technology, ensuring that the system runs quietly in the background without disrupting daily activities. This is particularly beneficial for light commercial spaces or homes where noise can be a concern. The sleek design and compact size make the unit easy to install in various settings without occupying excessive space.

Furthermore, Bryant incorporates advanced smart technology within the 548D model. The system can be integrated with smart thermostats, allowing users to monitor and control their heating and cooling settings remotely. This feature not only enhances convenience but also enables homeowners to program their systems for maximum efficiency.

In conclusion, the Bryant 548D heat pump is an exceptional choice for those seeking a reliable, efficient, and technologically advanced heating and cooling solution. Its combination of variable-speed compression, eco-friendly refrigerant, high energy efficiency, and quiet operation positions it well in the competitive HVAC market, making it a top choice for both residential and light commercial applications. By investing in the Bryant 548D, consumers can enjoy superior comfort and lower energy bills year-round.