Bryant 580J*16D User Manual
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Table 1 – Unit Wire/Fuse or HACR Breaker Sizing Data
UN
IT
NOM.
V---Ph---Hz
IFM
TYPE
COMBUSTION
FAN MOTOR
POWER
EXHAUST
NO C.O. or UNPWR C.O.
FLA
FLA
NO P.E.
w/ P.E. (pwrd fr/ unit)
MCA
FUSE
or
HACR
BRKR
DISC. SIZE
MCA
FUSE
or
HACR
BRKR
DISC. SIZE
FLA
LRA
FLA
LRA
580J
*16D
208/230---3---60
STD
0.48
3.8
68.3
80
71
396
72.1
80
76
400
MED
70.8
80
74
413
74.6
90
79
417
HIGH
77.8/75.8 100/100
82/80
424
81.6/79.6 100/100
87/84
428
460---3---60
STD
0.25
1.8
34.0
45
35
234
35.8
45
37
236
MED
35.0
45
37
243
36.8
45
39
245
HIGH
38.2
50
40
248
40.0
50
42
250
575---3---60
STD
0.24
3.8
26.5
30
28
184
30.3
40
32
188
MED
26.5
30
28
184
30.3
40
32
188
HIGH
29.8
35
31
187
33.6
40
36
191
Table 1 — Unit Wire/Fuse or HACR Breaker Sizing Data (cont)
UN
IT
NOM.
V---Ph---Hz
IFM
TYPE
COMBUSTION
FAN MOTOR
POWER
EXHAUST
w/ PWRD C.O.
FLA
FLA
NO P.E.
w/ P.E. (pwrd fr/ unit)
MCA
FUSE
or
HACR
BRKR
DISC. SIZE
MCA
FUSE
or
HACR
BRKR
DISC. SIZE
FLA
LRA
FLA
LRA
580J
*16D
208/230---3---60
STD
0.48
3.8
73.1
80
77
401
76.9
100
81
405
MED
75.6
100
80
418
79.4
100
84
422
HIGH
82.6/80.6 100/100
88/85
429
86.4/84.4 100/100
92/90
433
460---3---60
STD
0.25
1.8
36.2
45
38
236
38.0
50
40
238
MED
37.2
50
39
245
39.0
50
41
247
HIGH
40.4
50
43
250
42.2
50
45
252
575---3---60
STD
0.24
3.8
28.2
35
30
186
32.0
40
34
190
MED
28.2
35
30
186
32.0
40
34
190
HIGH
31.5
40
33
189
35.3
45
38
193
Legend and Notes for Table 1
LEGEND:
BRKR
--- Circuit breaker
CO
--- Convenience outlet
DISC
--- Disconnect
FLA
--- Full load amps
IFM
--- Indoor fan motor
LRA
--- Locked rotor amps
MCA
--- Minimum circuit amps
PE
--- Power exhaust
PWRD CO
--- Powered convenient outlet
UNPWR CO
--- Unpowered convenient outlet
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. 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 de-
termine the percentage of voltage imbalance.
% Voltage Imbalance
= 100 x
max voltage deviation from average voltage
average voltage
Example: Supply voltage is 230-3-60
AB = 224 v
BC = 231 v
AC = 226 v
Average Voltage =
(224 + 231 + 226)
=
681
3
3
=
227
Determine maximum deviation from average voltage.
(AB) 227 – 224 = 3 v
(BC) 231 – 227 = 4 v
(AC) 227 – 226 = 1 v
Maximum deviation is 4 v.
Determine percent of voltage imbalance.
% Voltage Imbalance
= 100 x
4
227
= 1.76%
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.
2011 Bryant Heating and Cooling Systems. D 7310 W. Morris St. D Indianapolis, IN 46231
Printed in U.S.A.
Edition Date: 01/11
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Catalog No: SS580J---02
Replaces: New
580J
*16D