Electrical Data - Bryant 579F User Manual

UNIT SIZE NOMINAL
IFM TYPE
581B V-PH-Hz
STD
208/230-3-60
HIGH
STD
460-3-60
102
HIGH
(8 1 / Tons)
2
STD
575-3-60 HIGH
PH
STD
208/230-3-60
HIGH
STD
460-3-60
120
HIGH
(10 Tons)
STD
575-3-60 HIGH
PH
208/230-3-60 STD
460-3-60 STD
150
(12 1 / Tons)
2
ST
575-3-60
PH
LEGEND
CONV — Convenience Outlet
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
PH — Perfect Humidity™ Dehumidification System
RLA — Rated Load Amps
UL — Underwriters' Laboratories
*The values listed in this table do not include power exhaust. See table at right for power
exhaust requirements.
†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. The UL, Canada units may be fuse or circuit breaker.
2. Electrical data based on 95 F ambient outdoor-air temperature ± 10% voltage.
3. 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
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.
ELECTRICAL DATA (cont)
581B036-150 UNITS
VOLTAGE
COMPRESSOR (each)
CONV
RANGE
OUTLET
Min Max Qty
NO
YES
187 254 2
NO
YES
NO
YES
414 508 2
NO
YES
NO
YES
NO
518 632 2
YES
NO
YES
NO
YES
187 254 2
NO
YES
NO
YES
414 508 2
NO
YES
NO
YES
NO
518 632 2
YES
NO
YES
NO
187 254 2
YES
NO
414 508 2
YES
NO
YES
518 632 2
NO
YES
452 + 464 + 455
=
3
1371
=
3
= 457
OFM (each)
IFM
FLA
RLA LRA Qty FLA
7.5
13.1 105 2 1.4
10.6
3.4
7.4 55 2 0.7
4.8
2.8
0.6
6.4 44 2 3.3
0.7 4.8
10.6
17.6 125 2 1.4
15.0
4.8
8.3 62.5 2 0.7
7.4
3.3
2 0.6
6.3 50 5.6
2 0.7 7.4
19 156 2 1.4 15.0
9 75 2 0.7 7.4
2 0.6 5.6
7.4 54
2 0.7 7.4
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.
POWER EXHAUST ELECTRICAL DATA
POWER EXHAUST
PART NO.
CRPWREXH030A01
CRPWREXH021A01
CRPWREXH022A01
CRPWREXH023A01
CRPWREXH028A01
CRPWREXH029A01
N/A — Not Available
*Single or three phase.
NOTE: If a single power source is to be used, size wire to include power exhaust MCA
and MOCP.
Check MCA and MOCP when power exhaust is powered through the unit. Determine the
new MCA including the power exhaust using the following formula:
MCA New = MCA unit only + MCA of Power Exhaust
For example, using a 581B060 unit with MCA = 28.9 and MOCP = 35, with
CRPWREXH030A01 power exhaust.
MCA New = 28.9 amps + 1.6 amps = 30.5 amps
If the new MCA does not exceed the published MOCP, then MOCP would not change.
The MOCP in this example is 35 amps and the MCA New is below 35; therefore the
MOCP is acceptable. If "MCA New" is larger than the published MOCP, raise the MOCP
to the next larger size. For separate power, the MOCP for the power exhaust will be
15 amps per NEC.
138
COMBUSTION
POWER SUPPLY*
FAN MOTOR
FLA MCA MOCP**
40.2 45
46.2 50
0.6
43.3 50
49.3 60
21.5 25
24.2 30
0.3
22.9 25
25.6 30
18.2 20
20.4 25
0.3
18.9 25
21.1 25
19.4 25
0.3
21.5 25
53.0 60
0.6
59.0 70
57.4 70
0.6
63.4 70
24.9 30
27.6 30
0.3
27.5 30
30.2 35
19.1 25
0.3
21.3 25
21.0 25
0.3
23.1 25
21.2 25
0.3
23.4 25
60.6 70
0.6
66.6 70
29.1 35
0.3
31.8 35
23.5 30
0.3
25.6 30
23.7 30
0.3
25.9 30
7
457
= 1.53%
APPLICATION MCA MCA
USAGE (230 V) (460 V) (575 V)
036-072* 1.6 N/A
036-072 N/A 0.68
090-150* 3.4 N/A
090-150 N/A 1.4
ALL* 1.7 N/A
ALL N/A 0.7
MINIMUM UNIT
DISCONNECT SIZE†
FLA LRA
42 276
48 281
46 301
51 305
23 143
25 145
24 156
27 158
19 115
21 116
20 124
22 126
20 124
22 126
56 341
61 345
61 364
66 369
26 171
29 173
29 182
32 184
20 136
22 138
23 146
25 148
23 146
25 148
64 426
70 431
31 207
33 209
25 154
27 156
25 154
27 156
MOCP
MCA (separate
power source
only)
0.64 15
N/A 15
1.32 15
N/A 15
0.68 15
N/A 15