ELECTRICAL DATA

ELECTRICAL DATA — 551A155,180

UNIT

NOMINAL

VOLTAGE

 

COMPRESSOR

 

 

OFM

 

IFM

POWER

ELECTRIC

POWER SUPPLY

VOLTAGE

RANGE

No. 1

No. 2

 

 

 

 

 

 

EXHAUST

 

HEAT*

 

 

551A

(3 Ph, 60 Hz)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Min

Max

RLA

LRA

RLA

LRA

Qty

Hp

FLA (ea)

Hp

 

FLA

FLA

LRA

kW

 

FLA

MCA

MOCP†

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

59/ 59

70/ 70

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.6

18.8

 

64/ 63

80/ 80

 

 

 

 

 

 

 

 

 

 

 

 

 

 

14/19

 

39/ 45

60/ 67

70/ 70

 

208/230

187

253

20.7

156

19.3

123

3

0.5

1.7

2.9

 

8.8/

4.6

18.8

14/19

 

39/ 45

66/ 73

80/ 80

 

 

8.4

26/34

 

71/ 82

100/113

100/125

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.6

18.8

26/34

 

71/ 82

106/119

110/125

155

 

 

 

 

 

 

 

 

 

 

 

 

 

42/56

 

117/135

157/146

175/175

 

 

 

 

 

 

 

 

 

 

 

 

 

4.6

18.8

42/56

 

117/135

163/151

175/175

(Standard

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IFM)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

29

35

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.3

6.0

 

31

40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

 

18

29

35

 

460

414

508

10

70

10

62

3

0.5

0.8

2.9

 

4.2

2.3

6.0

15

 

18

31

40

 

 

32

 

39

54

60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.3

6.0

32

 

39

57

60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

55

 

66

71

80

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.3

6.0

55

 

66

74

80

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

61/ 61

80/ 80

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.6

18.8

 

65/ 66

80/ 80

 

 

 

 

 

 

 

 

 

 

 

 

 

 

14/19

 

39/ 45

62/ 70

80/ 80

 

208/230

187

253

20.7

156

19.3

123

3

0.5

1.7

3.7

 

11.0/

4.6

18.8

14/19

 

39/ 45

68/ 76

80/ 80

 

 

10.5

26/34

 

71/ 82

102/116

110/125

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.6

18.8

26/34

 

71/ 82

108/122

110/125

155

 

 

 

 

 

 

 

 

 

 

 

 

 

42/56

 

117/135

159/149

175/175

 

 

 

 

 

 

 

 

 

 

 

 

 

4.6

18.8

42/56

 

117/135

165/155

175/175

(Optional

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IFM)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30

35

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.3

6.0

 

32

40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

 

18

30

35

 

460

414

508

10

70

10

62

3

0.5

0.8

3.7

 

4.8

2.3

6.0

15

 

18

32

40

 

 

32

 

39

55

60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.3

6.0

32

 

39

58

60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

55

 

66

72

80

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.3

6.0

55

 

66

75

80

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

82/ 82

110/110

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.6

18.8

 

86/ 86

110/110

 

 

 

 

 

 

 

 

 

 

 

 

 

 

26/34

 

71/ 82

109/122

110/125

 

208/230

187

253

32.1

195

20.7

156

3

0.5

1.7

5.0

 

15.8/

4.6

18.8

26/34

 

71/ 82

114/128

125/150

 

 

15.8

42/56

 

117/135

166/155

175/175

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.6

18.8

42/56

 

117/135

172/161

175/175

 

 

 

 

 

 

 

 

 

 

 

 

 

 

56/75

 

156/180

176/200

200/225

180

 

 

 

 

 

 

 

 

 

 

 

 

 

4.6

18.8

56/75

 

156/180

182/206

200/225

 

 

 

 

 

 

 

 

 

 

 

 

 

 

41

50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.3

6.0

 

43

50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

32

 

39

59

60

 

460

414

508

16.4

95

10

70

3

0.5

0.8

5.0

 

7.9

2.3

6.0

32

 

39

62

70

 

 

55

 

66

76

90

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.3

6.0

55

 

66

79

90

 

 

 

 

 

 

 

 

 

 

 

 

 

 

80

 

96

106

125

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.3

6.0

80

 

96

109

125

-180

 

LEGEND

FLA

Full Load Amps

HACR

Heating, Air Conditioning and Refrigeration

IFM

Indoor (Evaporator) Fan Motor

LRA

Locked Rotor Amps

MCA

Minimum Circuit Amps

MOCP

Maximum Overcurrent Protection

NEC

National Electrical Code

OFM

Outdoor (Condenser) Fan Motor

RLA

Rated Load Amps

*Heater capacity (kW) is based on heater voltage of 208 v, 240 v, 380 v, 480 v, and 575 v. Heat- ers are rated at 240 v, 480 v, or 575 v. If power distribution voltage to unit varies from rated heater voltage, heater kW will vary accordingly. To determine heater capacity at actual unit voltage, multiply 240 v, 480 v, or 575 v capacity by multipliers found in table on page 150.

†Fuse or HACR circuit breaker.

NOTES:

1. In compliance with NEC requirements for multimotor and combination load equipment

(refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be

EXAMPLE: Supply voltage is 460-3-60.

AB = 452 v

BC = 464 v

AC = 455 v

Average Voltage = 452 + 464 + 455

3

1371

=

3

= 457

Determine maximum deviation from average voltage.

(AB) 457 – 452 = 5 v (BC) 464 – 457 = 7 v (AC) 457 – 455 = 2 v

Maximum deviation is 7 v.

Determine percent voltage imbalance.

fuse or HACR breaker. The Canadian units may be fuse or circuit breaker.

2. Unbalanced 3-Phase Supply Voltage

% Voltage Imbalance = 100 x

7

551A155

Never operate a motor where a phase imbalance in supply voltage is greater than 2%.

Use the following formula to determine the percent of voltage imbalance.

% Voltage Imbalance

max voltage deviation from average voltage

= 100 x

average voltage

457

= 1.53%

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.

3.MCA calculation for 551A155,180 units with electric heaters over 50 kW = (1.25 x IFM amps) + (1.00 x heater FLA).

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Bryant 558F, 551B manual ELECTRICAL DATA - 551A155,180, Electrical Data

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.