Bryant 551B 462 348, 467 614 594 681 728, 868, 474 381, 505 622 635 688 773, 486 417, 498 456

Page 33

Table 24 — Fan Performance 551B102 — Horizontal Discharge Units; Standard Motor (Belt Drive)*

AIRFLOW

 

 

 

 

 

EXTERNAL STATIC PRESSURE (in. wg)

 

 

 

 

 

 

0.2

 

 

0.4

 

 

0.6

 

 

0.8

 

 

1.0

 

CFM

 

 

 

 

 

 

 

 

 

 

 

Rpm

Bhp

Watts

Rpm

Bhp

Watts

Rpm

Bhp

Watts

Rpm

Bhp

Watts

Rpm

Bhp

Watts

2500

462

0.37

348

541

0.50

467

614

0.64

594

681

0.78

728

744

0.93

868

2600

474

0.41

381

551

0.54

505

622

0.68

635

688

0.83

773

750

0.98

916

2700

486

0.45

417

561

0.58

545

630

0.73

679

695

0.88

820

756

1.04

967

2800

498

0.49

456

571

0.63

587

639

0.78

725

702

0.93

870

762

1.09

1020

2900

510

0.53

497

581

0.68

632

648

0.83

774

710

0.99

922

768

1.15

1076

3000

523

0.58

541

592

0.73

680

657

0.88

825

718

1.05

977

775

1.22

1135

3100

536

0.63

587

603

0.78

730

666

0.94

879

726

1.11

1035

783

1.28

1196

3200

549

0.68

637

614

0.84

783

676

1.00

936

735

1.17

1096

790

1.35

1260

3300

562

0.74

689

626

0.90

839

686

1.07

996

743

1.24

1159

798

1.42

1328

3400

575

0.80

744

637

0.96

898

696

1.14

1059

752

1.31

1226

806

1.50

1398

3500

588

0.86

802

649

1.03

961

707

1.21

1125

762

1.39

1296

815

1.58

1472

3600

601

0.93

864

661

1.10

1026

717

1.28

1194

771

1.47

1369

823

1.66

1548

3700

614

1.00

929

673

1.17

1095

728

1.36

1267

781

1.55

1445

832

1.75

1629

3800

628

1.07

997

685

1.25

1167

739

1.44

1343

791

1.64

1525

841

1.84

1712

3900

641

1.15

1069

697

1.33

1243

750

1.53

1423

801

1.72

1608

850

1.93

1799

4000

655

1.23

1144

709

1.42

1322

761

1.61

1506

812

1.82

1695

860

2.03

1890

4100

668

1.31

1223

722

1.51

1405

773

1.71

1593

822

1.92

1786

870

2.13

1984

4200

682

1.40

1305

734

1.60

1492

784

1.80

1683

833

2.02

1880

880

2.23

2082

4300

696

1.49

1392

747

1.70

1582

796

1.91

1777

844

2.12

1979

890

2.34

2184

 

 

 

 

 

 

 

 

 

 

 

 

AIRFLOW

 

 

 

 

 

EXTERNAL STATIC PRESSURE (in. wg)

 

 

 

 

 

 

1.2

 

 

1.4

 

 

1.6

 

 

1.8

 

 

2.0

 

CFM

 

 

 

 

 

 

 

 

 

 

 

Rpm

Bhp

Watts

Rpm

Bhp

Watts

Rpm

Bhp

Watts

Rpm

Bhp

Watts

Rpm

Bhp

Watts

2500

804

1.09

1013

861

1.25

1164

915

1.41

1319

967

1.59

1479

1017

1.76

1642

2600

809

1.14

1065

864

1.31

1219

918

1.48

1378

969

1.65

1541

1018

1.83

1708

2700

813

1.20

1119

869

1.37

1277

921

1.54

1439

972

1.72

1606

1021

1.90

1776

2800

819

1.26

1176

873

1.43

1337

925

1.61

1503

975

1.79

1673

1023

1.98

1847

2900

824

1.32

1235

878

1.50

1400

929

1.68

1569

978

1.87

1742

1026

2.06

1920

3000

830

1.39

1298

883

1.57

1466

934

1.76

1638

982

1.95

1815

1029

2.14

1996

3100

837

1.46

1363

889

1.65

1534

938

1.83

1710

986

2.03

1891

1033

2.23

2075

3200

843

1.53

1431

894

1.72

1606

944

1.91

1785

991

2.11

1969

1037

2.31

2157

3300

850

1.61

1502

901

1.80

1680

949

2.00

1863

996

2.20

2051

1041

2.40

2242

3400

858

1.69

1576

907

1.88

1758

955

2.09

1944

1001

2.29

2135

1046

2.50

2331

3500

865

1.77

1653

914

1.97

1838

961

2.18

2029

1007

2.38

2223

1051

2.60

2422

3600

873

1.86

1733

921

2.06

1922

967

2.27

2116

1012

2.48

2314

1056

2.70

2516

3700

881

1.95

1816

928

2.16

2010

974

2.37

2207

1019

2.58

2409

1062

2.80

2615

3800

889

2.04

1904

936

2.25

2100

981

2.47

2302

1025

2.69

2507

3900

898

2.14

1995

944

2.35

2195

988

2.57

2399

1032

2.80

2608

4000

907

2.24

2089

952

2.46

2293

996

2.68

2501

4100

916

2.35

2187

960

2.57

2395

1004

2.80

2607

4200

925

2.45

2289

969

2.68

2500

4300

934

2.57

2395

978

2.80

2610

LEGEND

Bhp — Brake Horsepower Input to Fan Watts — Input Watts to Motor

*Motor drive range: 840 to 1085 rpm. All other rpms require field- supplied drive.

NOTES:

1.Boldface indicates field-supplied drive is required.

2.Maximum continuous bhp is 2.90.

3.See page 23 for general fan performance notes.

33

Image 33
Contents Safety Considerations ContentsInstallation Provide Unit SupportIII. Install Condensate Drain Line and External Trap IV. RIG and Place UnitPositioning Roof Curb Details Operating WeightBase Unit Dimensions Unit 551B Physical DataMake Electrical Connections Field Power SupplyIFC NECFLA MCA Mocp LRA Hacr Electrical DataVoltage Comp no Electric Heater †Used to determine minimum disconnect per NEC Electric Heater UsageHeat Anticipator Settings Field Control WiringVI. Adjust FACTORY-INSTALLED Options A. Disconnect Switch Perfect Humidity Dehumidification SystemAccessory Field-Installed Humidistat Convenience Outlet Manual Outdoor-Air DamperOptional EconoMi$er Hood Box Removal EconoMi$er IV Standard SensorsOutdoor-Air Hood Construction EconoMi$er IV Sensor Usage EconoMi$er IV Control ModesEconoMi$er IV Controller Potentiometer LED Locations Enthalpy Changeover Set Points Page Ppm CO2 Sensor Standard SettingsUnit Heater Required Config VII. Adjust EVAPORATOR-FAN SpeedMinimum Required Airflow Exceptions UrationFan Rpm at Motor Pulley Setting* Standard Motor/Drive Fan Rpm at Motor Pulley Setting* High-Static Motor/DriveEvaporator-Fan Motor Data Standard Motor Accessory/FIOP Electric Heaters Static Pressure in. wg Accessory/FIOP EconoMi$er IV Static Pressure* in. wgEvaporator-Fan Motor Data High-Static Motors General FAN Performance NotesAirflow 866 697 1088 756 1324 832 690 1051 750 1285901 703 1125 762 1365 974 716 1204 774 1449506 629 625 688 745 489 386866 502 4241656 15671748 1844805 695 953 749 1100 799 1249 748 684 891 738 1034 789 1177865 707 760 1170 809 1323929 718 1086 771 1244 820 1401 865 707 1018 760 1170 809 13231665 1873668 1116 726 654 1040 713683 1197 739 697 1281 753596 629 802 694 1021 465 4021252 471 421882 684 1125 746 1378 823 674 1059 737 1306944 695 1194 756 1453 1009 705 1266 766 1533467 614 594 681 728 462 348868 474 3812821 27162293 996 2501 1038 2713 29301677 808 1876 855 2081 710 1482723 1577 1775 820 19781582 796 1777 1492 784 16831677 808 1876 1877781 1445 614 929 673628 997 685 791 1525VI. Refrigerant Service Ports Internal WiringPRE-START-UP START-UP Unit PreparationXI. Safety Relief Heating if Accessory Heater is InstalledIX. Cooling XII. Ventilation Continuous FANPerfect Humidity System Normal Design Cooling Operation Service Cleaning Units With Power ExhaustEvaporator Coil Condenser CoilsIV. BELT/PULLEY Adjustment III. CONDENSER-FAN Adjustment FIGECONOMI$ER IV Adjustment II. LubricationCooling Charging Charts, Standard 551B090 Unit Cooling Charging Charts, Standard 551B120 Unit VII. Replacement Parts Troubleshooting Unit Troubleshooting Cooling TroubleshootingProblem Cause Remedy Reheat Mode Will Not Energize Subcooling Mode Liquid ReheatWill Not Energize Low System CapacityII. ECONOMI$ER IV Troubleshooting EconoMi$er IV Input/Output Logic EconoMi$er IV Troubleshooting CompletionInputs Outputs Demand Control EnthalpyIndex Operating sequence Cooling EconoMi$er HeatingPage Temperatures START-UP ChecklistPreliminary Information III. START-UP Electrical
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551B 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.