Bryant 551B 865 707 1018 760 1170 809 1323, 929 718 1086 771 1244 820 1401, 1665, 1873, 1132 3555

Page 29

Table 20 — Fan Performance 551B120 — Vertical Discharge Units; High-Static 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

3000

556

0.65

604

623

0.80

748

684

0.95

891

738

1.11

1034

789

1.26

1177

3100

569

0.70

656

636

0.86

805

695

1.02

953

749

1.18

1100

799

1.34

1249

3200

583

0.76

712

648

0.93

865

707

1.09

1018

760

1.26

1170

809

1.42

1323

3300

597

0.83

770

661

1.00

929

718

1.17

1086

771

1.33

1244

820

1.50

1401

3400

611

0.89

832

674

1.07

996

730

1.24

1158

782

1.42

1320

831

1.59

1483

3500

625

0.96

898

687

1.14

1066

742

1.32

1233

794

1.50

1400

841

1.68

1567

3600

639

1.04

967

700

1.22

1140

754

1.41

1312

805

1.59

1484

852

1.78

1656

3700

654

1.11

1040

713

1.31

1218

767

1.50

1395

817

1.69

1571

863

1.87

1748

3800

668

1.20

1116

726

1.39

1299

779

1.59

1481

828

1.78

1662

874

1.98

1844

3900

683

1.28

1197

739

1.48

1385

792

1.69

1572

840

1.88

1758

886

2.08

1943

4000

697

1.37

1281

753

1.58

1474

804

1.79

1666

852

1.99

1857

897

2.20

2048

4100

712

1.47

1370

766

1.68

1567

817

1.89

1764

864

2.10

1960

909

2.31

2155

4200

726

1.57

1462

780

1.79

1665

830

2.00

1866

876

2.22

2067

920

2.43

2268

4300

741

1.67

1559

794

1.89

1767

843

2.12

1973

889

2.34

2179

932

2.56

2384

4400

755

1.78

1660

807

2.01

1873

856

2.23

2084

901

2.46

2295

944

2.69

2505

4500

770

1.89

1766

821

2.13

1984

869

2.36

2200

914

2.59

2415

956

2.82

2630

4600

785

2.01

1876

835

2.25

2099

882

2.49

2320

926

2.72

2541

968

2.96

2760

4700

800

2.14

1991

849

2.38

2219

895

2.62

2445

939

2.86

2670

980

3.10

2895

4800

815

2.26

2111

863

2.51

2344

909

2.76

2575

952

3.01

2805

993

3.25

3034

4900

829

2.40

2235

877

2.65

2473

922

2.91

2709

965

3.16

2944

1005

3.41

3178

5000

844

2.54

2365

891

2.80

2608

936

3.06

2849

978

3.31

3089

1018

3.57

3328

 

 

 

 

 

 

 

 

 

 

 

 

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

3000

836

1.42

1322

881

1.57

1467

923

1.73

1613

963

1.89

1761

1001

2.05

1909

3100

846

1.50

1398

890

1.66

1547

932

1.82

1698

972

1.98

1849

1010

2.15

2002

3200

856

1.58

1477

899

1.75

1631

941

1.92

1786

980

2.08

1942

1018

2.25

2099

3300

866

1.67

1559

909

1.84

1718

950

2.01

1878

989

2.19

2038

1027

2.36

2199

3400

876

1.76

1645

919

1.94

1808

960

2.12

1972

998

2.29

2137

1036

2.47

2303

3500

886

1.86

1734

929

2.04

1902

969

2.22

2071

1008

2.40

2240

1045

2.58

2410

3600

897

1.96

1827

939

2.14

2000

979

2.33

2173

1017

2.52

2347

1054

2.70

2521

3700

907

2.06

1924

949

2.25

2101

989

2.44

2279

1027

2.63

2457

1063

2.83

2636

3800

918

2.17

2025

959

2.37

2207

999

2.56

2389

1036

2.76

2571

1073

2.95

2755

3900

929

2.28

2130

970

2.48

2316

1009

2.68

2502

1046

2.88

2690

1082

3.09

2877

4000

940

2.40

2238

980

2.61

2429

1019

2.81

2620

1056

3.02

2812

1092

3.22

3004

4100

951

2.52

2351

991

2.73

2547

1029

2.94

2743

1066

3.15

2939

1102

3.36

3136

4200

962

2.65

2468

1002

2.86

2668

1040

3.08

2869

1076

3.29

3070

1112

3.51

3271

4300

973

2.78

2589

1013

3.00

2794

1050

3.22

2999

1087

3.44

3205

1122

3.66

3411

4400

985

2.91

2715

1024

3.14

2924

1061

3.36

3134

1097

3.59

3345

1132

3.81

3555

4500

996

3.05

2845

1035

3.28

3059

1072

3.51

3274

1108

3.74

3489

1142

3.97

3704

4600

1008

3.20

2979

1046

3.43

3199

1083

3.67

3418

1118

3.90

3638

1152

4.14

3857

4700

1020

3.34

3119

1058

3.58

3343

1094

3.83

3567

1129

4.07

3792

1163

4.31

4016

4800

1032

3.50

3263

1069

3.74

3492

1105

3.99

3721

1140

4.24

3950

1174

4.48

4179

4900

1044

3.66

3413

1081

3.91

3646

1117

4.16

3880

1151

4.41

4113

1184

4.66

4347

5000

1056

3.82

3566

1093

4.08

3805

1128

4.34

4044

1162

4.59

4282

1195

4.85

4520

LEGEND

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

*Motor drive range: 830 to 1130 rpm. All other rpms require field- supplied drive.

NOTES:

1.Boldface indicates field-supplied drive is required.

2.Maximum continuous bhp is 5.25.

3.See page 23 for general fan performance notes.

29

Image 29
Contents Safety Considerations ContentsInstallation Provide Unit SupportPositioning III. Install Condensate Drain Line and External TrapIV. RIG and Place Unit 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 Optional EconoMi$er Convenience OutletManual Outdoor-Air Damper Hood Box Removal EconoMi$er IV Standard SensorsOutdoor-Air Hood Construction EconoMi$er IV Sensor Usage EconoMi$er IV Control ModesEconoMi$er IV Controller Potentiometer LED Locations Enthalpy Changeover Set Points Page Ppm CO2 Sensor Standard SettingsUnit Heater Required Config VII. Adjust EVAPORATOR-FAN SpeedMinimum Required Airflow Exceptions UrationEvaporator-Fan Motor Data Standard Motor Fan Rpm at Motor Pulley Setting* Standard Motor/DriveFan Rpm at Motor Pulley Setting* High-Static Motor/Drive Accessory/FIOP Electric Heaters Static Pressure in. wg Accessory/FIOP EconoMi$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$ER IV Adjustment II. LubricationCooling Charging Charts, Standard 551B090 Unit Cooling Charging Charts, Standard 551B120 Unit VII. Replacement Parts Problem Cause Remedy Troubleshooting Unit TroubleshootingCooling Troubleshooting Reheat Mode Will Not Energize Subcooling Mode Liquid ReheatWill Not Energize Low System CapacityII. ECONOMI$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.