551B,C

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Fig. 54 ---Cooling Charging Chart, 551B 048 with

Optional Perfect Humidity Adaptive

Dehumidification System

NOTE: When using the charging charts, it is important that only the subcooling/reheat dehumidification coil liquid line solenoid valve be energized. The subcooling/reheat dehumidification coil liquid line solenoid valve MUST be energized to use the charging charts and the outdoor motor speed controller jumpered to run the fan at full speed.

The charts reference a liquid pressure (psig) and temperature at a point between the condenser coil and the subcooling/reheat dehumidification coil. A tap is provided on the unit to measure liquid pressure entering the subcooling/reheat dehumidification coil.

IMPORTANT: The subcooling mode charging charts (Fig. 53-56) are to be used ONLY with units having the Perfect Humidity adaptive dehumidification system. DO NOT use standard charge (Fig. 49-51 and 57-60) for units with Perfect Humidity system, and DO NOT use Fig. 53-56 for standard units.

C06145

Fig. 55 ---Cooling Charging Chart, 551B 048 with

Optional Perfect Humidity Adaptive

Dehumidification System

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Fig. 56 ---Cooling Charging Chart, 551B 072 with

Optional Perfect Humidity Adaptive

Dehumidification System

To Use Cooling Charging Chart, Standard Unit

Take the outdoor ambient temperature and read the suction pressure gauge. Refer to charts to determine what suction temperature should be. If suction temperature is high, add refrigerant. If suction temperature is low, carefully recover some of the charge. Recheck the suction pressure as charge is adjusted.

Example (Fig. 49):

Outdoor Temperature . . . . . . . . . . . . . . . . . . . . . . . . . 75°F Suction Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 psig Suction Temperature should be . . . . . . . . . . . . . . . . . . 48°F (Suction temperature may vary ± 5°F.)

If a charging device is used, temperature and pressure readings must be accomplished using the charging charts.

To Use Cooling Charging Charts, Units With

Perfect Humidity™ Adaptive Dehumidification System

Refer to charts (Fig. 53-56) to determine the proper leaving condenser pressure and temperature.

Example (Fig. 53):

Leaving Condenser Pressure . . . . . . . . . . . . . . . . . 250 psig Leaving Condenser Temperature . . . . . . . . . . . . . . . 105_F

NOTE: When using the charging charts, it is important that only the subcooling/reheat dehumidification coil liquid line solenoid valve be energized. The subcooling/reheat dehumidification coil liquid line solenoid valve MUST be energized to use the charging charts and the outdoor motor speed controller jumpered to run the fan at full speed.

IMPORTANT: Refer to Troubleshooting Tables for additional information.

Step 6 —Replacement Parts

A complete list of replacement parts may be obtained from any Bryant distributor upon request.

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Bryant 551B, 551C installation instructions Replacement Parts
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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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