Bryant 558F User Manual
Page 54
ELECTRICAL DATA — 559F180-300 UNITS (cont)
UNIT
559F
NOMINAL
V-PH-Hz
VOLTAGE
RANGE
COMPRESSOR
OFM
IFM
POWER
EXHAUST
ELECTRIC
HEAT*
POWER
SUPPLY
No. 1
No. 2
Min
Max
RLA
LRA
RLA
LRA
Quantity
Hp
FLA
(ea)
FLA
FLA
LRA
FLA
Nom kW**
MCA
MOCP††
240
208/230-3-60
187
254
35.6
198
35.6
198
2
1
5.50
25.0/25.0
—
—
—/—
—/—
116/116
150/150
72/ 82
26/34
121/134
150/150
117/135
42/56
178/166
200/175
156/180
56/75
187/211
200/225
4.6
18.8
—/—
—/—
121/121
150/150
72/ 82
26/34
127/140
150/150
117/135
42/56
183/172
200/175
156/180
56/75
193/217
200/225
460-3-60
414
508
17.8
99
17.8
99
2
1
2.80
13.0
—
—
—
—
59
70
39
32
65
70
66
55
82
90
96
80
112
125
2.3
6.0
—
—
61
70
39
32
68
70
66
55
85
90
96
80
115
125
575-3-60
518
632
14.3
79
14.3
79
2
1
3.40
10.0
—
—
—
—
49
60
2.1
4.8
—
—
51
60
300
208/230-3-60
187
254
43.6
228
43.6
228
2
1
5.50
28.0/28.0
—
—
—/—
—/—
137/137
175/175
72/ 82
26/34
137/138
175/175
117/135
42/56
181/170
200/175
156/180
56/75
191/215
200/225
4.6
18.8
—/—
—/—
142/142
175/175
72/82
26/34
142/143
175/175
117/135
42/56
187/176
200/200
156/180
56/75
197/221
200/225
460-3-60
414
508
22.1
114
22.1
114
2
1
2.80
14.6
—
—
—
—
70
90
39
32
70
90
66
55
84
90
96
80
114
125
2.3
6.0
—
—
72
90
39
32
72
90
66
55
87
90
96
80
117
125
575-3-60
518
632
17.9
91
17.9
91
2
1
3.40
13.0
—
—
—
—
60
70
2.1
4.8
—
—
62
80
LEGEND AND NOTES FOR ELECTRICAL DATA TABLES ON PAGES 49-54
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, 480 v, and
575 v. Heaters 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 de-
termine heater capacity at actual unit voltage, multiply 240 v, 480 v, or 575 v
capacity by multipliers found in Electric Heat Multiplication Factors table on
page 48.
†Used to determine minimum disconnect size per NEC.
**Heaters are field installed only.
††Fuse or HACR circuit breaker.
Fusing in single point box provides the required branch circuit protection.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load
equipment (refer to NEC Articles 430 and 440), the overcurrent protective de-
vice 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.
max voltage deviation from average voltage
% Voltage Imbalance = 100 x
average voltage
EXAMPLE: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
452 + 464 + 455
Average Voltage =
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.
3. MCA calculation for units with electric heaters over 50 kW = (1.25 x IFM amps)
+ (1.00 x heater FLA).
036-150 Only
036-072 Only
090-150 Only
180-300 Only
180-300 Only
54