Electrical Data - Bryant COMMERCIAL SINGLE PACKAGE ROOFTOP GAS HEAT/ELECTRIC COOLING 581B User Manual

581B036-072 STANDARD MOTOR (Units Without Electrical Convenience Outlet)
NOMINAL
UNIT
VOLTAGE
581B
(V-Ph-Hz)
208/230-1-60
208/230-3-60
036
(3 Tons)
460-3-60
575-3-60
208/230-1-60
208/230-3-60
048
(4 Tons)
460-3-60
575-3-60
208/230-1-60
208/230-3-60
060
(5 Tons)
460-3-60
575-3-60
208/230-3-60
072
460-3-60
(6 Tons)
575-3-60
581B036-072 STANDARD MOTOR (Units With Electrical Convenience Outlet)
NOMINAL
UNIT
VOLTAGE
581B
(V-Ph-Hz)
208/230-1-60
208/230-3-60
036
(3 Tons)
460-3-60
575-3-60
208/230-1-60
208/230-3-60
048
(4 Tons)
460-3-60
575-3-60
208/230-1-60
208/230-3-60
060
(5 Tons)
460-3-60
575-3-60
208/230-3-60
072
460-3-60
(6 Tons)
575-3-60
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
UL — Underwriters' Laboratories
*Used to determine minimum disconnect per NEC.
†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 fuse or HACR breaker. UL, Can-
ada 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
= 100 x
average voltage

ELECTRICAL DATA

VOLTAGE
COMPRESSOR
RANGE
Min Max RLA LRA
187 254 16.0 88.0
187 254 10.3 77.0
414 508 5.1 39.0
518 632 4.2 31.0
187 254 23.7 129.0
187 254 13.5 99.0
414 508 7.4 49.5
518 632 5.8 40.0
187 254 28.8 169.0
187 254 17.3 123.0
414 508 9.0 62.0
518 632 7.1 50.0
187 254 20.5 156.0
414 508 9.6 70.0
518 632 7.7 56.0
VOLTAGE
COMPRESSOR
RANGE
Min Max RLA LRA
187 254 16.0 88.0
187 254 10.3 77.0
414 508 5.1 39.0
518 632 4.2 31.0
187 254 23.7 129.0
187 254 13.5 99.0
414 508 7.4 49.5
518 632 5.8 40.0
187 254 28.8 169.0
187 254 17.3 123.0
414 508 9.0 62.0
518 632 7.1 50.0
187 254 20.5 156.0
414 508 9.6 70.0
518 632 7.7 56.0
COMBUSTION
OFM IFM
FAN MOTOR
FLA FLA FLA
0.7 4.9 .57
0.7 4.9 .57
0.4 2.2 .30
0.4 2.2 .30
0.7 4.9 .57
0.7 4.9 .57
0.4 2.2 .30
0.4 2.2 .30
1.5 8.8 .57
1.5 5.8 .57
0.8 2.6 .30
0.8 2.6 .30
1.4 5.8 .57
0.6 2.6 .30
0.6 2.6 .30
COMBUSTION
OFM IFM
FAN MOTOR
FLA FLA FLA
0.7 4.9 .57
0.7 4.9 .57
0.4 2.2 .30
0.4 2.2 .30
0.7 4.9 .57
0.7 4.9 .57
0.4 2.2 .30
0.4 2.2 .30
1.5 8.8 .57
1.5 5.8 .57
0.8 2.6 .30
0.8 2.6 .30
1.4 5.8 .57
0.6 2.6 .30
0.6 2.6 .30
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
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
= 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%, con-
tact your local electric utility company immediately.
45
POWER MINIMUM UNIT
SUPPLY DISCONNECT
WITH OUTLET SIZE*
MCA MOCP† FLA
25.6/25.6 35/35 25/25
18.5/18.5 25/25 18/18
9.0 15 9
7.3 15 7
35.2/35.2 45/45 34/34
22.5/22.5 30/30 22/22
11.9 15 12
9.3 15 9
46.3/46.3 60/60 45/45
28.9/28.9 35/35 28/28
14.7 20 14
11.6 15 11
32.8/32.8 40/40 32/32
15.2 20 15
12.2 15 13
POWER MINIMUM UNIT
SUPPLY DISCONNECT
WITH OUTLET SIZE*
MCA MOCP† FLA
31.6/31.6 40/40 30/30
24.5/24.5 30/30 24/24
11.7 15 11
9.5 15 9
41.2/41.2 50/50 39/39
28.5/28.5 35/35 27/27
14.6 20 14
11.5 15 11
52.3/52.3 60/60 50/50
34.9/34.9 40/40 34/34
17.4 20 17
13.8 20 13
38.8/38.8 45/45 37/37
17.9 20 17
14.3 20 15
452 + 464 + 455
3
1371
=
3
= 457
7
457
LRA
101/101
90/ 90
46
36
142/142
112/112
56
45
216/216
168/168
84
67
200/200
92
78
LRA
106/106
95/95
48
38
147/147
117/117
58
47
221/221
173/173
86
69
205/205
94
79