Bryant 551B installation instructions Physical Data 551C, Base Unit 551C

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551B,C

Table 2—Physical Data 551C

BASE UNIT 551C

 

024

 

036

 

048

 

060

NOMINAL CAPACITY (nominal tons)

 

2

 

3

 

4

 

5

OPERATING WEIGHT (lb)

 

 

 

 

 

 

 

 

Unit

 

435

 

445

 

465

 

635

Perfect HumidityAdaptive Dehumidification System

 

13

 

15

 

23

 

25

EconoMi$er IV

 

50

 

50

 

50

 

50

Roof Curb

 

115

 

115

 

115

 

115

COMPRESSOR

 

 

 

 

 

Scroll

 

 

Quantity

 

1

 

1

 

1

 

1

Oil (oz)

 

25

 

42

 

56

 

53

REFRIGERANT TYPE

 

 

 

 

 

R-22

 

 

Expansion Device

 

 

 

 

AcutrolMetering Device

Operating Charge (lb-oz)

 

 

 

 

 

 

 

 

Standard Unit

 

5---3

 

7---11

 

8---8

 

12---11

Unit With Perfect Humidity Adaptive Dehumidification System

10---2

 

14---0

 

14---13

 

21---0

CONDENSER FAN

 

 

 

 

 

Propeller

 

 

Quantity...Diameter (in.)

 

1...22

 

1...22

 

1...22

 

1...22

Nominal Cfm

 

3000

 

3500

 

3500

 

4100

Motor Hp...Rpm

 

1/8...825

 

1/8...825

 

1/8...825

 

1/ ...1100

Watts Input (Total)

 

 

 

 

 

 

 

4

 

180

 

180

 

180

 

320

CONDENSER COIL

 

 

 

3/8---in. OD Enhanced Copper Tubes, Aluminum Lanced Fins

Rows...Fins/in.

 

1...17

 

1...17

 

2...17

 

2...17

Total Face Area (sq ft)

 

14.6

 

14.6

 

16.5

 

16.5

EVAPORATOR COIL

 

 

3/8---in. OD Enhanced Copper Tubes, Aluminum Double-Wavy Fins

Standard Unit

 

 

 

 

 

 

 

 

Rows...Fins/in.

 

2...15

 

2...15

 

2...15

 

4...15

Total Face Area (sq ft)

 

4.2

 

5.5

 

5.5

 

5.5

Unit with Perfect Humidity Adaptive Dehumidification System

 

 

 

 

 

 

 

Rows...Fins/in.

 

1...17

 

1...17

 

2...17

 

2...17

Total Face Area (sq ft)

 

3.5

 

3.9

 

3.9

 

3.9

EVAPORATOR FAN

 

 

 

 

Centrifugal Type, Belt Drive

Quantity...Size (in.)

 

1...10 x 10

 

1...10 x 10

 

1...10 x 10

 

1...10 x 10

Nominal Cfm

 

800

 

1200

 

1600

 

2000

Maximum Continuous Bhp

Std

0.58

 

1.20

 

1.20

 

1.30/2.40*

 

Hi-Static

 

 

2.40

 

2.40

 

2.90

Motor Frame Size

Std

48

 

48

 

48

 

48/56*

Motor Rpm

Hi-Static

 

 

56

 

56

 

56

 

1620

 

1620

 

1620

 

1725

Fan Rpm Range

Std

400-1000

 

680-1044

 

770-1185

 

1035-1460

Motor Bearing Type

Hi-Static

 

 

1075-1455

 

1075-1455

 

1300-1685

 

Ball

 

Ball

 

Ball

 

Ball

Maximum Fan Rpm

Std

1620

 

2100

 

2100

 

2100

Motor Pulley Pitch Diameter A/B (in.)

2.4/3.2

 

1.9/2.9

 

1.9/2.0

 

2.4/3.4

 

Hi-Static

 

 

2.8/3.8

 

2.8/3.8

 

3.4/4.4

Nominal Motor Shaft Diameter (in.)

Std

5/8

 

1/2

 

1/2

 

5/8

 

Hi-Static

7/8

 

5/8

 

5/8

 

5/8

Fan Pulley Pitch Diameter (in.)

Std

4.0

 

4.5

 

4.0

 

4.0

 

Hi-Static

4.5

 

4.5

 

4.0

 

4.5

Belt — Type...Length (in.)

Std

1...A...36

 

1...A...36

 

1...A...36

 

1....4...40

Pulley Center Line Distance (in.)

Hi-Static

 

 

1...A...39

 

1...A...39

 

1...A...40

Std

10.0---12.4

 

10.0-12.4

 

10.0-12.4

 

14.7-15.5

Speed Change per Full Turn of

60

 

65

 

70

 

75

Movable Pulley Flange (rpm)

Hi-Static

 

 

65

 

65

 

60

Movable Pulley Maximum Full

Std

5

 

5

 

5

 

6

Turns from Closed Position

Hi-Static

 

 

6

 

6

 

5

Factory Setting — Full Turns Open

Std

3

 

3

 

3

 

3

 

Hi-Static

 

 

31/2

 

31/2

 

31/2

Factory Speed Setting (rpm)

Std

756

 

826

 

936

 

1248

Fan Shaft Diameter at Pulley (in.)

Hi-Static

 

 

1233

 

1233

 

1396

 

5/8

 

5/8

 

5/8

 

5/8

HIGH-PRESSURE SWITCH (psig)

 

 

 

 

 

 

 

 

Standard Compressor Internal Relief

 

 

 

 

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

 

 

Closes (F)

 

 

 

 

45

 

 

OUTDOOR-AIR INLET SCREENS

 

 

 

Cleanable. Screen quantity and size varies with option selected.

RETURN-AIR FILTERS

 

 

 

 

 

Throwaway

 

 

Quantity...Size (in.)

 

 

 

 

2...16 x 25 x 2

 

 

LEGEND

 

 

 

***These units do NOT meet the California low NOx requirements.

Bhp — Brake Horsepower

 

 

 

†††California SCAQMD compliant low NOx

models have combustion products that are

 

 

 

controlled to 40 nanograms per joule or less.

*Single phase/three phase.

10

Image 10
Contents Installation Instructions Field Fabricate Ductwork Install External Trap for Condensate DrainProvide Unit Support Rig and Place UnitRoof Curb Details Unit Leveling Tolerances 551C Unit Operating Dimensions Weight551B 551B 036-072 Base Unit Dimensions 551C 024-060 Base Unit Dimensions Heat Anticipator Settings Field Power SupplyField Control Wiring Make Electrical ConnectionsPhysical Data 551B Base Unit 551BPhysical Data 551C Base Unit 551CPower Wiring Connections Electrical Data-551C FLA MCA LRA Type OutletPerf ect Voltage FLA Crheater 008,009 23.4 30.1 40.8 Electrical Data-551B FLA MCA LRA414 508 Ton 004+005 19.9 24.3 55.2 76.3 86.9 168 34.9 173 002 13.6 A00 or Adjust Factory-Installed Options Typical Perfect Humidity t Adaptive Dehumidification System Outdoor-Air Damper With Hood Attached Outdoor-Air Damper Position SettingEconoMi$er IV Component Locations Optional EconoMi$er Temperature F Supply Air Temperature SAT SensorSupply Air Sensor Temperature Resistance Values Outdoor Air Lockout SensorEconoMi$er IV Sensor Usage EconoMi$er IV Control Modes Outdoor Dry Bulb ChangeoverDifferential Dry Bulb Control Outdoor Enthalpy Changeover Differential Enthalphy ControlMinimum Position Control Exhaust Set Point AdjustmentIndoor Air Quality IAQ Sensor Input Damper MovementOutside Air Temperature Changeover Set Points Return Air Temperature or Enthalpy Sensor Mounting LocationCO2 Sensor Configuration EconoMi$er IV ControlDehumidification of Fresh Air with DCV Control Adjust Evaporator-Fan SpeedCO2Sensor Standard Settings Belt Drive MotorsUnit Motor Pulley Turns Open Evaporator-Fan Motor Data Standard Motor Evaporator-Fan Motor Data High-Static Motors024, 036 060 74/84 072 Evaporator-Fan Motor EfficiencyMotor 551B Efficiency Airflow957 522 1000 598 173 718 267 Rpm Bhp Watts 900 566 142 690 228879 9031400 737 355 842 481 932 610 Rpm Bhp Watts 1200 666 252 778 361 873 476 956 5941300 701 809 418 902 540 983 665 875 551 962 6891700 866 478 966 608 Rpm Bhp Watts 1500 790 353 897 471 991 6001600 828 412 931 536 1022 670 1800 905 551 1001 6871495 1858 1700 1462 20671472 1761 1600 1463 1766 1520 1964 18002400 1145 1174 1223 1346 1296 1526 2200 1063 929 1147 1089 1224 1256 1295 14312300 1104 1046 1185 1212 1260 1386 2500 1185 1311 1262 14902000 984 727 1078 892 Rpm Bhp Watts 1800 907 558 1006 708 1092 8601900 945 638 1042 796 2100 1024 823 1115 9972300 1103 1044 1189 1234 1266 1425 2100 1024 823 1115 997 1195 1173 1268 13502200 1063 929 1152 1111 1230 1294 2400 1143 1168 1227 13671100 612 195 735 Rpm Bhp Watts 900 554 134 6811000 583 163 707 9191400 706 324 Rpm Bhp Watts 1200 643 233 762 3441300 674 276 1500 738 379719 Rpm Bhp Watts 1500 724 295 837 402 937 524 1028 6601600 757 343 866 455 962 580 1700 790 398 894 514 988 6431508 1957 1900 1474 1797 17001490 1873 1800 1467 1839 1527 2050 2000Rpm Bhp Watts 1500 1188 970 1261 1143 2400 1033 970 1115 1120 1192 1279 1264 14482500 1069 1084 1149 1239 1223 1403 1293 1576 1600 1208 1033 12792600 1097 1169 1181 1356 1257 1546 2400 1026 945 1115 1118 1195 1295 1268 14762500 1061 1053 1148 1233 1226 1416 1297 1604 2700 1132 1294 1214 1487 1289 1684Unit Preparation Internal WiringRefrigerant Service Ports Return-Air FiltersHeating Safety ReliefCooling Ventilation Continuous FanCleaning Evaporator CoilLubrication Refrigerant Charge Condenser-Fan AdjustmentEconoMi$er IV Adjustment No ChargeCooling Charging Chart Standard 551B Replacement Parts 551C 3 TON Charging Chart 551C 5 TON Charging Chart Unit Troubleshooting Economi$er IV TroubleshootingCooling Service Analysis EconoMi$er IV Troubleshooting CompletionProblem Cause Remedy EconoMi$er IV Input/Output Logic Inputs OutputsEconoMi$er IV Functional View Preliminary Information Catalog No. II551B---C---36---1
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551C, 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.