PHYSICAL DATA - 551B090-150, Acutrol Metering Device

PHYSICAL DATA — 551B090-150

UNIT 551B

090

102

120

150

NOMINAL CAPACITY (tons)

71/

81/

121/

OPERATING WEIGHT (lb)

Unit

755

760

915

930

EconoMi$er

Perfect Humidity™ Dehumidification Package

Roof Curb

143

COMPRESSOR

Scroll

Quantity

Oil (oz) (each compressor)

REFRIGERANT TYPE

R-22

551B036-

Operating Charge (lb-oz)

Standard Unit

Circuit 1

7-10

7-14

9-3

9-8

Circuit 2

8- 2

8- 5

10-3

9-5

Unit With Perfect Humidity Dehumidification Package

Circuit 1

10-10

10-11

12- 8

12-6

Circuit 2

12- 8

10-10

12-14

12-2

150

CONDENSER FAN

Propeller Type

Quantity...Diameter (in.)

2...22

Nominal Cfm

6500

7000

Motor Hp...Rpm

1/ ...1100

Watts Input (Total)

650

CONDENSER COIL

High-Efficiency Enhanced Copper Tubes, Lanced Aluminum Fins

Standard Unit

Rows...Fins/in.

2...17

Total Face Area (sq ft)

20.5

25.0

Unit with Perfect Humidity Dehumidification Package

Rows...Fins/in.

1...17

Total Face Area (sq ft)

6.3

8.4

EVAPORATOR FAN

Centrifugal Type, Belt Drive

Size (in.)

15 x 15

Nominal Cfm — Standard

3000

3400

4000

5000

Maximum Continuous Bhp

Standard

2.90

3.70

5.25

High Static

4.20

5.25

—

Motor Frame

Fan Rpm Range

Standard

840-1085

860-1080

900-1260

High Static

860-1080

830-1130

—

Motor Bearing Type

Ball

Maximum Fan Rpm

2100

Motor Pulley Pitch Diameter A/B (in.)

Standard

3.4/4.4

4.0/5.0

2.8/3.8

High Static

4.0/5.0

2.8/3.8

—

Nominal Motor Shaft Diameter (in.)

Fan Pulley Pitch Diameter (in.)

Standard

7.0

8.0

5.8

High Static

8.0

5.8

—

Belt — Quantity...Type...Length (in.)

Standard

1...A...51

1...BX...46

High Static

1...A...55

1...BX...46

—

Pulley Center Line Distance (in.)

16.75-19.25

15.85-17.50

Speed Change per Full Turn of

Movable Pulley Flange (rpm)

Standard

High Static

—

Movable Pulley Maximum Full Turns

From Closed Position

Standard

High Static

—

Factory Setting — Full Turns Open

Factory Speed Setting (rpm)

Standard

840

860

960

High Static

860

890

—

Fan Shaft Diameter at Pulley (in.)

EVAPORATOR COIL

High Efficiency Enhanced Copper Tubes, Aluminum Double-Wavy Fins,

Acutrol™ Metering Device

Rows...Fins/in.

3...15

4...15

Total Face Area (sq ft)

8.9

11.1

HIGH-PRESSURE SWITCH (psig)

Standard Compressor Internal Relief (Differential)

450 ± 50

Cutout

428

Reset (Auto.)

320

LOSS-OF-CHARGE/LOW-PRESSURE

SWITCH (Liquid Line) (psig)

Cutout

7 ± 3

Reset (Auto.)

22 ± 5

FREEZE-PROTECTION THERMOSTAT

Opens (F)

30 ± 5

Closes (F)

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...20 x 20 x 2

LEGEND

Bhp — Brake Horsepower

551A, 551B, 558F specifications

The Bryant 551B and 551C are two highly efficient air conditioning units designed to provide optimal comfort in residential settings. Known for their reliability and performance, these models are part of Bryant's esteemed line of heating and cooling solutions.

One of the standout features of the Bryant 551B is its two-stage cooling system, which allows for better humidity control and increased comfort. This ensures that homeowners can enjoy consistent temperatures while reducing energy consumption. The unit operates quietly, thanks to its noise-reducing technology, making it an ideal choice for bedrooms and living spaces.

On the other hand, the Bryant 551C builds upon this foundation with its variable-speed compressor. This technology allows the unit to adjust its cooling output according to the specific needs of the home. This results in seamless operation and even greater energy efficiency. Both models also incorporate Bryant's advanced control capabilities, which allow users to monitor and adjust settings remotely via smart devices, adding a layer of convenience and modernity to home climate control.

With an emphasis on durability, both the 551B and 551C feature a galvanized steel cabinet that protects against weather-related damage. The powder coat finish further enhances their resistance to rust and corrosion, ensuring a long lifespan and minimal maintenance.

Another significant characteristic of these units is their excellent Seasonal Energy Efficiency Ratio (SEER) ratings. The 551B boasts a SEER rating of up to 16, while the 551C takes it even further with ratings exceeding 20. This efficiency not only translates to lower energy bills for homeowners but also contributes to a reduced carbon footprint, making these units environmentally friendly options.

Both models are also designed to operate with eco-friendly refrigerants, aligning with modern energy standards and regulations aimed at reducing greenhouse gas emissions.

In summary, the Bryant 551B and 551C are exemplary choices for homeowners looking for reliable, efficient, and high-performing air conditioning solutions. With features such as two-stage and variable-speed compressors, advanced smart technology, and robust construction, these models stand out in the competitive HVAC market. They promise a comfortable indoor environment along with significant energy savings, making them a wise investment for the future.

Bryant 558F, 551A manual PHYSICAL DATA - 551B090-150, Acutrol Metering Device

Models: 551A 551B 558F