Electrical Data - Bryant 558D User Manual

VOLTAGE
RANGE
UNIT NOMINAL
559F V-PH-Hz
Min Max
208/230-3-60 187 254
240
460-3-60 414 508
575-3-60 518 632
208/230-3-60 187 254
300
460-3-60 414 508
575-3-60 518 632
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.
% Voltage Imbalance = 100 x
EXAMPLE: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
ELECTRICAL DATA — 559F180-300 UNITS (cont)
COMPRESSOR
No. 1 No. 2
RLA LRA RLA LRA Quantity
35.6 198 35.6 198
17.8 99 17.8 99
14.3 79 14.3 79
43.6 228 43.6 228
22.1 114 22.1 114
17.9 91 17.9 91
LEGEND AND NOTES FOR ELECTRICAL DATA TABLES ON PAGES 49-54
max voltage deviation from average voltage
average voltage
452 + 464 + 455
3
1371
=
3
= 457
OFM IFM
EXHAUST
FLA
Hp FLA FLA
(ea)
—
2 1 5.50 25.0/25.0
4.6
—
2 1 2.80 13.0
2.3
—
2 1 3.40 10.0
2.1
—
2 1 5.50 28.0/28.0
4.6
—
2 1 2.80 14.6
2.3
—
2 1 3.40 13.0
2.1
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.
% Voltage Imbalance = 100 x
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).
090-150 Only
54
POWER ELECTRIC
HEAT*
LRA FLA Nom kW**
—/— —/—
72/ 82 26/34
—
117/135 42/56
156/180 56/75
—/— —/—
72/ 82 26/34
18.8
117/135 42/56
156/180 56/75
— —
39 32
—
66 55
96 80
— —
39 32
6.0
66 55
96 80
— — —
4.8 — —
—/— —/—
72/ 82 26/34
—
117/135 42/56
156/180 56/75
—/— —/—
72/82 26/34
18.8
117/135 42/56
156/180 56/75
— —
39 32
—
66 55
96 80
— —
39 32
6.0
66 55
96 80
— — —
4.8 — —
7
457
= 1.53%
036-150 Only 036-072 Only
180-300 Only
POWER
SUPPLY
MCA MOCP††
116/116 150/150
121/134 150/150
178/166 200/175
187/211 200/225
121/121 150/150
127/140 150/150
183/172 200/175
193/217 200/225
59 70
65 70
82 90
112 125
61 70
68 70
85 90
115 125
49 60
51 60
137/137 175/175
137/138 175/175
181/170 200/175
191/215 200/225
142/142 175/175
142/143 175/175
187/176 200/200
197/221 200/225
70 90
70 90
84 90
114 125
72 90
72 90
87 90
117 125
60 70
62 80
180-300 Only