Bryant 576b installation instructions Electrical Data

Page 7

Table 4 — Electrical Data

UNIT

NOMINAL VOLTAGE

VOLTAGE RANGE

COMPRESSOR

OFM

POWER SUPPLY

(V-Ph-Hz)

Min

Max

RLA

LRA

FLA

MCA

MOCP

 

569C072

208/230-3-60

187

254

21.8

158

1.9

30.1

40

460-3-60

414

508

10.0

79

1.0

13.5

20

 

575-3-60

518

632

9.0

65

1.9

14.1

20

569C090

208/230-3-60

187

254

28.8

195

3.8

39.8

50

460-3-60

414

508

14.7

95

1.9

20.3

25

 

575-3-60

518

632

10.8

80

1.9

15.4

20

569C120

208/230-3-60

187

254

37.8

239

3.1

51.1

70

460-3-60

414

508

17.2

125

1.4

23.4

30

 

575-3-60

518

632

14.3

90

1.4

19.8

25

 

208/230-3-60

187

254

31.5

160

3.1

42.5

50

576B090

380-3-60

342

418

19.0

75

2.2

26.0

35

460-3-60

414

508

15.7

80

1.4

21.0

25

 

 

575-3-60

518

632

12.6

64

1.4

17.2

20

 

208/230-3-60

187

254

39.7

198

3.1

52.7

70

576B102

380-3-60

342

418

24.0

93

2.2

32.2

40

460-3-60

414

508

19.9

99

1.4

26.3

35

 

 

575-3-60

518

632

15.9

79

1.4

21.3

25

 

208/230-3-60

187

254

39.7

198

3.1

52.7

70

576B120

380-3-60

342

418

24.0

93

2.2

32.2

40

460-3-60

414

508

19.9

99

1.4

26.3

35

 

 

575-3-60

518

632

15.9

79

1.4

21.3

25

 

 

LEGEND

CSA

Canadian Standards Association

FLA

Full Load Amps

HACR

Heating, Air Conditioning and Refrigeration

LRA

Locked Rotor Amps

MCA

Minimum Circuit Amps

MOCP —

Maximum Overcurrent Protection

EXAMPLE: Supply voltage is 460-3-60.

AB = 452 v

BC = 464 v

AC = 455 v

 

452 + 464 + 455

Average Voltage

=

 

 

3

NEC

National Electrical Code

OFM

Outdoor (Condenser) Fan Motor

=

1371

RLA

Rated Load Amps

UL

Underwriters’ Laboratories

3 = 457

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

Maximum deviation is 7 v.

Determine percent of voltage imbalance:

NOTES:

% Voltage Imbalance = 100 x

7

1.In compliance with NEC requirements for multimotor and combina- tion load equipment (refer to NEC Articles 430 and 440), the over- current protective device for the unit shall be fuse or HACR breaker. The Canadian units may be fuse or circuit breaker.

2.Unbalanced 3-Phase Supply Voltage

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.

% of 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 maxi- mum allowable 2%.

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

3.The 575-v units are CSA only.

4.The 380-v units are not UL or CSA listed.

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Image 7
Contents Contents Important Read Before InstallingSafety Considerations III. Compressor Mounting InstallationLocate the Unit II. RIG and Place UnitPhysical Data Electrical Connections Dimensions ft-inService Valve Connections Weight Chart lbRefrigerant Piping Sizes Field Power Supply FigLiquid Line Data Control Voltage Connections Power Wiring ConnectionsElectrical Data PRE-START-UP VI. Accessory InstallationAccessory List AccessoryCare and Maintenance START-UP START-UP and AdjustmentsCompressors Service CleaningCondenser Coil II. LubricationVI. Crankcase Heater Compressor RemovalVII. Refrigerant Charge IX. High Flow Valves VIII. Refrigerant Service PortsSymptom Cause Remedy Troubleshooting GuideCLO LPSCAP OFCIndoor Unit START-UP ChecklistOutdoor Unit ControlsIII. START-UP