Bryant 551B installation instructions Operating sequence Cooling EconoMi$er Heating, Index

Page 50

Access panels

14

 

 

 

Barometric flow capacity

16

Charging chart, refrigerant

43-45

Clearance

2, 5

 

 

 

CO2 sensor

 

 

 

 

Configuration

20

 

 

Settings

18, 20

 

 

 

Compressor

 

 

 

 

Lubrication

42

 

 

 

Mounting

38

 

 

 

Rotation

38

 

 

 

 

Condensate drain

 

 

 

Cleaning

42

 

 

 

 

Location

2, 4

 

 

 

Condenser coil

6

 

 

 

Cleaning

41

 

 

 

 

Condenser fan

6

 

 

 

Adjustment

42

 

 

 

Control circuit

 

 

 

 

Wiring

11

 

 

 

 

Wiring raceway

11

 

 

Convenience outlet

 

13

 

Demand ventilation control

19

Dehumidification

20

 

Dimensions 3, 5

 

 

 

Ductwork

1

 

 

 

 

EconoMi$er IV

13-20, 48, 49

Adjustment

42

 

 

 

Components

14

 

 

 

Damper movement

19

 

Wiring

15

 

 

 

 

Electrical connections

7

 

Electrical data

8-10

 

 

Electric heaters

10

 

 

Enthalpy changeover set points

18

Evaporator coil

6

 

 

Cleaning

41

 

 

 

Evaporator fan motor

6

 

Lubrication

42

 

 

Motor data

22, 23

 

 

Performance

24-37

 

Pulley adjustment

22

 

Pulley setting

6, 22

 

Speed 6

 

 

 

 

Factory-installed options

 

Convenience outlet

13

 

Disconnect switch

11

 

EconoMi$er IV

13-20

 

Manual outdoor air damper

13

Perfect Humidity™ dehumidification

system

11, 12

 

 

 

 

Filter

 

 

 

 

 

 

Cleaning

42

 

 

 

 

Installation 15

 

 

 

 

Size

6

 

 

 

 

 

Freeze protection thermostat

6

Heat anticipator settings

11

 

High flow valves

38

 

 

 

High pressure switch

6

 

 

Horizontal units

1, 2

 

 

 

Humidistat

12

 

 

 

 

Indoor air quality sensor

18

Low pressure switch

6

 

 

Manual outdoor air damper

13

Mounting

 

 

 

 

 

Unit

2

 

 

 

 

 

Non-fused disconnect switch

11

Operating sequence

 

 

 

Cooling

39

 

 

 

 

EconoMi$er IV

39

 

 

 

Heating

39

 

 

 

 

Perfect Humidity™ dehumidification package 39-41

Outdoor air hood 13-15

Outdoor air temperature sensor 14 Outdoor air inlet screens

Cleaning 42

INDEX

Perfect Humidity™ dehumidification

system 11, 12, 21, 39-42, 45, 47

 

Physical data

6

 

 

 

 

 

Power supply

 

 

 

 

 

 

Wiring

7

 

 

 

 

 

 

Pressure, drop

 

 

 

 

 

EconoMi$er IV

23

 

 

 

Electric heat

23

 

 

 

 

Perfect Humidity dehumidification

21

Pressure switches

 

 

 

 

 

High pressure

6

 

 

 

 

Low pressure

6

 

 

 

 

Pre-start-up 38

 

 

 

 

 

Refrigerant

 

 

 

 

 

 

Charge

6, 42

 

 

 

 

 

Type

6

 

 

 

 

 

 

Refrigerant service ports

38

 

 

Replacement parts

45

 

 

 

Return air filter

6, 38

 

 

 

Return air temperature sensor

17

 

Rigging unit

2, 4

 

 

 

 

Roof curb

 

 

 

 

 

 

Assembly

1

 

 

 

 

 

Dimensions

3

 

 

 

 

 

Connector package

3

 

 

 

Leveling tolerances

4

 

 

 

Weight

6

 

 

 

 

 

 

Safety considerations

1

 

 

 

Safety relief

39

 

 

 

 

 

Service

41-45

 

 

 

 

 

Service ports

38

 

 

 

 

Slab mount

1

 

 

 

 

 

Start-up 38-41

 

 

 

 

 

Start-up checklist

CL-1

 

 

 

Supply air temperature sensor

14

 

Thermostat

11

 

 

 

 

 

Troubleshooting

46-49

 

 

 

Ventilation

39

 

 

 

 

 

Weight

 

 

 

 

 

 

 

Corner

5

 

 

 

 

 

 

EconoMi$er IV

5, 6

 

 

 

Perfect Humidity dehumidification

6

Unit

4-6

 

 

 

 

 

 

Wiring

 

 

 

 

 

 

 

EconoMi$er IV

15

 

 

 

Humidistat

12

 

 

 

 

Perfect Humidity system

12

 

 

Power connections

7

 

 

 

Copyright 2005 Bryant Heating & Cooling Systems

Printed in U.S.A.

CATALOG NO. 04-53551004-01

Image 50
Contents Installation ContentsSafety Considerations Provide Unit SupportPositioning III. Install Condensate Drain Line and External TrapIV. RIG and Place Unit Roof Curb Details Weight OperatingBase Unit Dimensions Physical Data Unit 551BIFC Field Power SupplyMake Electrical Connections NECElectrical Data FLA MCA Mocp LRA HacrVoltage Comp no Electric Heater Electric Heater Usage †Used to determine minimum disconnect per NECVI. Adjust FACTORY-INSTALLED Options A. Disconnect Switch Field Control WiringHeat Anticipator Settings Perfect Humidity Dehumidification SystemAccessory Field-Installed Humidistat Optional EconoMi$er Convenience OutletManual Outdoor-Air Damper EconoMi$er IV Standard Sensors Hood Box RemovalOutdoor-Air Hood Construction EconoMi$er IV Control Modes EconoMi$er IV Sensor UsageEconoMi$er IV Controller Potentiometer LED Locations Enthalpy Changeover Set Points Page CO2 Sensor Standard Settings PpmMinimum Required Airflow Exceptions VII. Adjust EVAPORATOR-FAN SpeedUnit Heater Required Config UrationEvaporator-Fan Motor Data Standard Motor Fan Rpm at Motor Pulley Setting* Standard Motor/DriveFan Rpm at Motor Pulley Setting* High-Static Motor/Drive Evaporator-Fan Motor Data High-Static Motors Accessory/FIOP EconoMi$er IV Static Pressure* in. wgAccessory/FIOP Electric Heaters Static Pressure in. wg General FAN Performance NotesAirflow 901 703 1125 762 1365 832 690 1051 750 1285866 697 1088 756 1324 974 716 1204 774 1449866 489 386506 629 625 688 745 502 4241748 15671656 1844865 707 748 684 891 738 1034 789 1177805 695 953 749 1100 799 1249 760 1170 809 13231665 865 707 1018 760 1170 809 1323929 718 1086 771 1244 820 1401 1873683 1197 739 654 1040 713668 1116 726 697 1281 7531252 465 402596 629 802 694 1021 471 421944 695 1194 756 1453 823 674 1059 737 1306882 684 1125 746 1378 1009 705 1266 766 1533868 462 348467 614 594 681 728 474 3812293 996 2501 1038 2713 27162821 2930723 1577 710 14821677 808 1876 855 2081 1775 820 19781677 808 1876 1492 784 16831582 796 1777 1877628 997 685 614 929 673781 1445 791 1525PRE-START-UP Internal WiringVI. Refrigerant Service Ports START-UP Unit PreparationIX. Cooling Heating if Accessory Heater is InstalledXI. Safety Relief XII. Ventilation Continuous FANPerfect Humidity System Normal Design Cooling Operation Evaporator Coil Units With Power ExhaustService Cleaning Condenser CoilsECONOMI$ER IV Adjustment III. CONDENSER-FAN Adjustment FIGIV. BELT/PULLEY Adjustment II. LubricationCooling Charging Charts, Standard 551B090 Unit Cooling Charging Charts, Standard 551B120 Unit VII. Replacement Parts Problem Cause Remedy Troubleshooting Unit TroubleshootingCooling Troubleshooting Will Not Energize Subcooling Mode Liquid ReheatReheat Mode Will Not Energize Low System CapacityII. ECONOMI$ER IV Troubleshooting Inputs Outputs EconoMi$er IV Troubleshooting CompletionEconoMi$er IV Input/Output Logic Demand Control EnthalpyOperating sequence Cooling EconoMi$er Heating IndexPage Preliminary Information START-UP ChecklistTemperatures 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.