Bryant 551B, 551C Outdoor-Air Damper With Hood Attached, Outdoor-Air Damper Position Setting

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551B,C

Fig. 19 ---

Fig. 20

WIRING HARNESS

ACTUATOR

Fig. 21

C06131

Outdoor-Air Damper With Hood Attached

C06132

---Outdoor-Air Damper Position Setting

ECONOMI$ER IV

CONTROLLER

OUTSIDE AIR

TEMPERATURE SENSOR

LOW AMBIENT

SENSOR

C06021

---EconoMi$er IV Component Locations

Optional EconoMi$er IV

See Fig. 21 for EconoMi$er IV component locations.

NOTE: These instructions are for installing the optional EconoMi$er IV only. Refer to the accessory EconoMi$er IV installation instructions when field installing an EconoMi$er IV accessory.

1.To remove the existing unit filter access panel, raise the panel and swing the bottom outward. The panel is now disengaged from the track and can be removed. (See Fig. 22.)

2.The box with the economizer hood components is shipped in the compartment behind the economizer. The EconoMi$er IV controller is mounted on top of the EconoMi$er IV. To remove the component box from its shipping position, remove the screw holding the hood box bracket to the top of the economizer. Slide the hood box out of the unit. (See Fig. 23.)

IMPORTANT: If the power exhaust accessory is to be installed on the unit, the hood shipped with the unit will not be used and must be discarded. Save the aluminum filter for use in the power exhaust hood assembly.

3.The indoor coil access panel will be used as the top of the hood. Remove the screws along the sides and bottom of the indoor coil access panel. (See Fig. 24.)

4.Swing out indoor coil access panel and insert the hood sides under the panel (hood top). Use the screws provided to attach the hood sides to the hood top. Use screws provided to attach the hood sides to the unit. (See Fig. 25.)

5.Remove the shipping tape holding the economizer barometric relief damper in place.

6.Insert the hood divider between the hood sides. (See Fig. 25 and 26.) Secure hood divider with 2 screws on each hood side. The hood divider is also used as the bottom filter rack for the aluminum filter.

7.Open the filter clips which are located underneath the hood top. Insert the aluminum filter into the bottom filter rack (hood divider). Push the filter into position past the open filter clips. Close the filter clips to lock the filter into place. (See Fig. 26.)

8.Caulk the ends of the joint between the unit top panel and the hood top. (See Fig. 24.)

9.Replace the filter access panel.

10.Install all EconoMi$er IV accessories. EconoMi$er IV wiring is shown in Fig. 27.

Barometric flow capacity is shown in Fig. 28. Outdoor air leakage is shown in Fig. 29. Return air pressure drop is shown in Fig. 30.

FILTER ACCESS PANEL

COMPRESSOR

ACCESS PANEL

OUTDOOR-AIR OPENING AND

INDOOR COIL ACCESS PANEL

C06023

Fig. 22 ---Typical Access Panel Locations

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Contents Installation Instructions Install External Trap for Condensate Drain Provide Unit SupportField Fabricate Ductwork Rig and Place UnitRoof Curb Details Unit Leveling Tolerances Unit Operating Dimensions Weight 551C551B 551B 036-072 Base Unit Dimensions 551C 024-060 Base Unit Dimensions Field Power Supply Field Control WiringHeat Anticipator Settings 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 Position Setting Outdoor-Air Damper With Hood AttachedEconoMi$er IV Component Locations Optional EconoMi$er Supply Air Temperature SAT Sensor Supply Air Sensor Temperature Resistance ValuesTemperature F Outdoor Air Lockout SensorEconoMi$er IV Control Modes Outdoor Dry Bulb Changeover EconoMi$er IV Sensor UsageDifferential Dry Bulb Control Outdoor Enthalpy Changeover Differential Enthalphy ControlExhaust Set Point Adjustment Indoor Air Quality IAQ Sensor InputMinimum Position Control Damper MovementOutside Air Temperature Changeover Set Points Return Air Temperature or Enthalpy Sensor Mounting LocationCO2 Sensor Configuration EconoMi$er IV ControlAdjust Evaporator-Fan Speed CO2Sensor Standard SettingsDehumidification of Fresh Air with DCV Control Belt Drive MotorsUnit Motor Pulley Turns Open Evaporator-Fan Motor Data Standard Motor Evaporator-Fan Motor Data High-Static MotorsEvaporator-Fan Motor Efficiency Motor 551B Efficiency024, 036 060 74/84 072 AirflowRpm Bhp Watts 900 566 142 690 228 879957 522 1000 598 173 718 267 903Rpm Bhp Watts 1200 666 252 778 361 873 476 956 594 1300 701 809 418 902 540 983 6651400 737 355 842 481 932 610 875 551 962 689Rpm Bhp Watts 1500 790 353 897 471 991 600 1600 828 412 931 536 1022 6701700 866 478 966 608 1800 905 551 1001 6871462 2067 1472 1761 16001495 1858 1700 1463 1766 1520 1964 18002200 1063 929 1147 1089 1224 1256 1295 1431 2300 1104 1046 1185 1212 1260 13862400 1145 1174 1223 1346 1296 1526 2500 1185 1311 1262 1490Rpm Bhp Watts 1800 907 558 1006 708 1092 860 1900 945 638 1042 7962000 984 727 1078 892 2100 1024 823 1115 9972100 1024 823 1115 997 1195 1173 1268 1350 2200 1063 929 1152 1111 1230 12942300 1103 1044 1189 1234 1266 1425 2400 1143 1168 1227 1367Rpm Bhp Watts 900 554 134 681 1000 583 163 7071100 612 195 735 919Rpm Bhp Watts 1200 643 233 762 344 1300 674 2761400 706 324 1500 738 379Rpm Bhp Watts 1500 724 295 837 402 937 524 1028 660 1600 757 343 866 455 962 580719 1700 790 398 894 514 988 6431474 1797 1700 1490 1873 18001508 1957 1900 1467 1839 1527 2050 20002400 1033 970 1115 1120 1192 1279 1264 1448 2500 1069 1084 1149 1239 1223 1403 1293 1576Rpm Bhp Watts 1500 1188 970 1261 1143 1600 1208 1033 12792400 1026 945 1115 1118 1195 1295 1268 1476 2500 1061 1053 1148 1233 1226 1416 1297 16042600 1097 1169 1181 1356 1257 1546 2700 1132 1294 1214 1487 1289 1684Internal Wiring Refrigerant Service PortsUnit Preparation Return-Air FiltersSafety Relief CoolingHeating Ventilation Continuous FanCleaning Evaporator CoilLubrication Condenser-Fan Adjustment EconoMi$er IV AdjustmentRefrigerant Charge No ChargeCooling Charging Chart Standard 551B Replacement Parts 551C 3 TON Charging Chart 551C 5 TON Charging Chart Unit Troubleshooting Economi$er IV TroubleshootingEconoMi$er IV Troubleshooting Completion Cooling Service AnalysisProblem 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.
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