ELECTRICAL DATA (cont)

UNITS WITH ELECTRICAL CONVENIENCE OUTLET (cont)

 

 

 

 

NOMINAL

VOLTAGE

 

 

 

 

ELECTRIC

 

 

POWER

 

MINIMUM UNIT

 

 

 

UNIT

COMPRESSOR

OFM

IFM

 

 

 

DISCONNECT

 

 

 

VOLTAGE

RANGE

HEAT*

 

 

SUPPLY

 

 

 

 

549B

 

 

 

 

 

 

 

 

SIZE

 

 

 

(V-Ph-Hz)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Min

Max

RLA

LRA

FLA

FLA

kW†

FLA

MCA

MOCP

FLA

LRA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

—/—

—/—

43.0/

43.0

45/

45**

46/

46

247/247

 

 

 

 

 

 

 

 

 

 

 

7.8/10.4

21.7/

25.0

70.1/

74.3

80/

80

71/

75

269/272

 

 

 

 

208/230-3-60

187

254

12.4

88.0

1.4

7.5

12.0/16.0

33.3/

38.5

84.6/

91.1

90/100

84/

90

280/285††

 

 

 

 

18.6/24.8

51.6/

59.7

107.5/117.6

110/125

105/115

298/307††

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24.0/32.0

66.6/

77.0

126.3/139.3

150/150

122/134

313/324††

 

 

 

090***

 

 

 

 

 

 

 

31.8/42.4

88.3/102.0

153.4/170.5

175/175

147/163

335/349††

 

 

 

(71/2 Tons)

 

 

 

 

 

 

 

—

—

21.4

25**

23

 

123

 

 

 

 

 

 

 

 

 

 

 

13.9

16.7

42.3

45**

42

 

140

 

 

 

 

460-3-60

414

508

6.4

44.0

0.7

3.4

16.5

19.8

46.1

50**

46

 

143

 

 

 

 

27.8

33.4

63.1

70

 

61

 

157

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

33.0

39.7

71.0

80

 

68

 

163

 

 

 

 

 

 

 

 

 

 

 

41.7

50.2

84.1

90

 

80

 

174††

 

 

 

 

 

 

 

 

 

 

 

—/—

—/—

61.6/

61.6

70/

70

65/

65

341/341

 

 

 

 

 

 

 

 

 

 

 

7.8/10.4

21.7/

25.0

88.8/

92.9

90/100

90/

94

363/366††

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

208/230-3-60

187

254

19.3

123.0

1.4

10.6

12.0/16.0

33.3/

38.5

103.3/109.6

110/110

104/110

375/380††

 

549B036-120

 

 

 

 

 

 

 

 

 

24.0/32.0

66.6/

77.0

144.9/157.9

150/175

142/154

408/418††

 

 

120***

 

 

 

 

 

 

 

31.8/42.4

88.3/102.0

172.0/189.1

175/200

167/183

430/443††

 

 

 

 

 

 

 

 

 

37.6/50.0

104.4/120.3

192.1/181.9

200/200

185/204

446/462††

 

 

(10 Tons)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

—

—

30.9

35**

33

172

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50.0

60.1

91.0

100

102

232††

 

 

 

 

 

 

 

 

 

 

 

16.5

19.8

55.6

60**

55

191

 

 

 

 

460-3-60

414

508

10.0

62.0

0.7

4.8

27.8

33.4

72.6

80

71

205

 

 

 

 

33.0

39.7

80.5

90

78

211

 

 

 

 

 

 

 

 

 

 

 

41.7

50.2

93.6

100

90

222††

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LEGEND AND NOTES FOR ELECTRICAL DATA TABLES

LEGEND

FLA — Full Load Amps

HACR — Heating, Air Conditioning and Refrigeration IFM — Indoor Fan Motor

LRA — Locked Rotor Amps MCA — Minimum Circuit Amps

MOCP — Maximum Overcurrent Protection NEC — National Electrical Code

OFM — Outdoor Fan Motor

RLA — Rated Load Amps

*Used to determine minimum disconnect per NEC.

†Heater capacity (kW) is based on heater voltage of 208 v and 480 v. If power distribution voltage to unit varies from rated heater voltage, heater kW will vary accordingly.

**Fuse or HACR circuit breaker.

††Optional disconnect switch cannot be used.

***Units have 2 outdoor fan motors.

NOTES:

1.In compliance with NEC requirements for multimotor and combina- tion load and equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR 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.

% Voltage Imbalance

= 100 x

max voltage deviation from average voltage

average voltage

 

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 of voltage imbalance.

7

% Voltage Imbalance = 100 x 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.

94

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Image 94
Bryant 548F, 542J, 549B manual 43.0 247/247 10.4 21.7 25.0 70.1 74.3 269/272
Page 93 Page 95

549B, 548F, 542J specifications

Bryant 542J is a high-efficiency gas furnace that stands out for its reliability and advanced heating technologies. Designed to deliver consistent warmth and comfort in residential settings, it combines innovative engineering with energy-efficient features.

One of the key characteristics of the Bryant 542J is its two-stage heating capability. This means that the furnace can adjust its heat output according to the heating demands of your home. During milder weather, it operates at a lower stage, consuming less energy while still maintaining a comfortable environment. When the temperatures drop, the furnace shifts to its higher capacity, providing the necessary warmth efficiently. This not only enhances comfort but also contributes to lower energy bills.

In addition to its two-stage operation, the Bryant 542J also incorporates a variable-speed blower motor. This technology allows the furnace to adjust the airflow depending on the heating requirements, ensuring an even distribution of warm air throughout the home. The variable-speed blower also operates more quietly than conventional fixed-speed motors, creating a serene indoor environment.

Energy efficiency is a hallmark of the Bryant 542J, boasting an Annual Fuel Utilization Efficiency (AFUE) rating of up to 96.5%. This impressive rating means that a significant portion of the energy consumed is effectively converted into usable heat, resulting in substantial savings on heating costs over time. Furthermore, the furnace is equipped with a sealed combustion system that draws air from outside the home, minimizing energy waste and improving indoor air quality.

Diagnostic features are another highlight of the Bryant 542J, which come equipped with SmartEvap technology. This allows the unit to self-diagnose potential issues, providing homeowners with peace of mind and simplifying maintenance procedures.

Durability is also a key feature of the Bryant 542J. It is constructed with high-quality materials designed to withstand harsh winter conditions, ensuring a long lifespan and reliable performance. Its compact design also allows for flexible installation, making it suitable for various residential layouts.

In summary, the Bryant 542J is more than just a gas furnace; it is a sophisticated heating solution that combines efficiency, comfort, and reliability. With features such as two-stage heating, a variable-speed blower, high AFUE ratings, and advanced diagnostics, it is an excellent choice for homeowners seeking an efficient and effective heating system.
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