MODEL NUMBER NOMENCLATURE — 551A

551A E X 155 000 AJ C B

551A – High Efficiency Rooftop Units Electric Cooling

Voltage Designation

E 460-3-60

P 208/230-3-60

X – No Heat Installed

Nominal Tons 155 – 13 180 – 15

Electric Heaters

000– No factory-installed electric heaters Accessory field-installed electric heaters available

Fan Drive Position

(Standard Motor)

B– Standard Low-Medium Fan Drive Static Capability

D– Alternate High Fan Drive Static Capability

Factory-Installed Outdoor Air Upgrade Options

C – EconoMi$er

H– 25% Manual Damper

Design Series Code

AJ – EconoMi$er

Design Change

NOTE: The example model number 551AEX155000AJCB designates a high efficiency rooftop unit, equipped with Dual Copeland scroll compressors, 460-3-60 voltage, no heat, 12 tons cooling, EconoMi$er and the standard 2.9 bhp motor low-medium fan drive static capability.

ARI* CAPACITY RATINGS

UNIT

NOMINAL

STANDARD

NET COOLING

TOTAL

 

SOUND

 

CAPACITY

EER

RATING

IPLV

551A

TONS

CFM

WATTS

(Btuh)

 

(Bels)

 

 

 

 

 

 

 

155

13

3600

134,000

12,128

10.70

8.8

11.6

180

15

5300

180,000

16,828

10.80

8.8

11.7

 

LEGEND

Bels

Sound Levels (1 bel = 10 decibels)

db

Dry Bulb

EER — Energy Efficiency Ratio

IPLV

Integrated Part-Load Values

wb

Wet Bulb

*Air Conditioning and Refrigeration Institute.

NOTES:

1.Rated in accordance with ARI Standards 360-89 and 270-89.

2.ARI ratings are net values, reflecting the effects of circulating fan heat.

3.Ratings are based on:

Cooling Standard: 80 F db, 67 F wb indoor entering-air temperature and 95 F db air entering outdoor unit.

IPLV Standard: 80 F db, 67 F wb indoor entering-air temperature and 80 F db outdoor entering-air temperature.

4.All 551A155,180 units are in compliance with ASHRAE 90.1-1999 Energy Standard for minimum SEER and EER requirements. Refer to state and local codes or visit the following website: http://solstice.crest.org/efficiency/ bcap to determine if compliance with this standard pertains to a given geo- graphical area of the United States.

California, Maryland, Washington, Wyoming, Massachusetts and various local and state building codes adopted the ASHRAE 90.1-99 efficiency standard on October 29, 2001.

COOLING OPERATION AIR QUANTITY LIMITS

UNIT 551A

MINIMUM CFM

MAXIMUM CFM

155

3600

6,250

180

4500

7,500

OUTDOOR AIR LOW TEMPERATURE OPERATING LIMITS

UNIT SIZE

 

TEMPERATURE LIMIT (F)

551A

Standard

Unit With

Unit With

Unit

Low Ambient Kit

Motormaster® Control

 

155, 180

40

20

–20

551A155-180

149

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Bryant MODEL NUMBER NOMENCLATURE - 551A, 551A155-180, 551A E X 155 000 AJ C B, Cooling Operation Air Quantity Limits

551A, 551B, 558F 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.