Table 2A — Electrical Data — Standard Motor Units Without Electrical Convenience Outlet
UNIT |
| NOMINAL VOLTAGE | VOLTAGE | COMPRESSOR | OFM | IFM | COMBUSTION | POWER | MINIMUM UNIT | ||||||
| RANGE |
| (each) |
| (each) | FAN MOTOR | SUPPLY* | DISCONNECT SIZE† | |||||||
581B |
|
|
|
| |||||||||||
| Min | Max | Qty | RLA | LRA | FLA | FLA | FLA | MCA | MOCP** | FLA | LRA | |||
|
|
| |||||||||||||
| 187 | 254 |
| 16.0 | 88.0 | 0.7 | 4.9 | .60 | 25.6/25.6 | 30/30 | 25/25 | 101/101 | |||
036 | 187 | 254 | 1 | 10.3 | 77.0 | 0.7 | 4.9 | .60 | 18.5/18.5 | 25/25 | 18/18 | 90/90 | |||
(3 Tons) | 414 | 508 | 5.1 | 39.0 | 0.4 | 2.2 | .30 | 9.0 | 20 | 9 | 46 | ||||
| |||||||||||||||
| 518 | 632 |
| 4.2 | 31.0 | 0.4 | 2.2 | .30 | 7.3 | 20 | 7 | 37 | |||
048 |
| 187 | 254 |
| 23.7 | 126.0 | 0.7 | 4.9 | .60 | 35.2/35.2 | 45/45 | 34/34 | 139/139 | ||
187 | 254 | 1 | 13.5 | 93.0 | 0.7 | 4.9 | .60 | 22.5/22.5 | 30/30 | 22/22 | 106/106 | ||||
(4 Tons) | 414 | 508 | 6.4 | 46.5 | 0.4 | 2.2 | .30 | 10.6 | 20 | 10 | 54 | ||||
| |||||||||||||||
| 518 | 632 |
| 6.4 | 40.0 | 0.4 | 2.2 | .30 | 10.1 | 20 | 10 | 46 | |||
060 |
| 187 | 254 |
| 28.8 | 169.0 | 1.5 | 8.8 | .60 | 46.3/46.3 | 60/60 | 45/45 | 216/216 | ||
187 | 254 | 1 | 17.3 | 123.0 | 1.5 | 5.8 | .60 | 28.9/28.9 | 35/35 | 28/28 | 168/168 | ||||
(5 Tons) | 414 | 508 | 9.0 | 62.0 | 0.8 | 2.6 | .30 | 14.7 | 20 | 14 | 84 | ||||
| |||||||||||||||
| 518 | 632 |
| 7.1 | 50.0 | 0.8 | 2.6 | .30 | 11.6 | 20 | 12 | 68 | |||
072 |
| 187 | 254 |
| 20.5 | 156.0 | 1.4 | 5.8 | .60 | 32.8/32.8 | 40/40 | 32/32 | 200/200 | ||
414 | 508 | 1 | 9.6 | 75.0 | 0.6 | 2.6 | .30 | 15.2 | 20 | 15 | 97 | ||||
(6 Tons) | |||||||||||||||
518 | 632 |
| 7.7 | 56.0 | 0.6 | 2.6 | .30 | 12.2 | 20 | 12 | 74 | ||||
|
|
Table 2B — Electrical Data — Standard Motor Units With Electrical Convenience Outlet
|
| VOLTAGE | COMPRESSOR | OFM |
| COMBUSTION | POWER | MINIMUM UNIT | ||||||
UNIT | NOMINAL VOLTAGE | IFM | SUPPLY | |||||||||||
RANGE |
| (each) |
| (each) | FAN MOTOR | DISCONNECT SIZE† | ||||||||
581B |
|
|
| WITH OUTLET* | ||||||||||
|
|
|
|
|
|
|
|
|
| |||||
|
| Min | Max | Qty | RLA | LRA | FLA | FLA | FLA | MCA | MOCP** | FLA | LRA | |
| 187 | 254 |
| 16.0 | 88.0 | 0.7 | 4.9 | .60 | 31.6/31.6 | 35/35 | 30/30 | 106/106 | ||
036 | 187 | 254 | 1 | 10.3 | 77.0 | 0.7 | 4.9 | .60 | 24.5/24.5 | 30/30 | 24/24 | 95/95 | ||
(3 Tons) | 414 | 508 | 5.1 | 39.0 | 0.4 | 2.2 | .30 | 11.7 | 20 | 11 | 48 | |||
| ||||||||||||||
| 518 | 632 |
| 4.2 | 31.0 | 0.4 | 2.2 | .30 | 9.5 | 20 | 9 | 38 | ||
| 187 | 254 |
| 23.7 | 126.0 | 0.7 | 4.9 | .60 | 41.2/41.2 | 50/50 | 39/39 | 144/144 | ||
048 | 187 | 254 | 1 | 13.5 | 93.0 | 0.7 | 4.9 | .60 | 28.5/28.5 | 35/35 | 27/27 | 111/111 | ||
(4 Tons) | 414 | 508 | 6.4 | 46.5 | 0.4 | 2.2 | .30 | 13.3 | 20 | 13 | 56 | |||
| ||||||||||||||
| 518 | 632 |
| 6.4 | 40.0 | 0.4 | 2.2 | .30 | 12.2 | 20 | 12 | 47 | ||
| 187 | 254 |
| 28.8 | 169.0 | 1.5 | 8.8 | .60 | 52.3/52.3 | 60/60 | 50/50 | 221/221 | ||
060 | 187 | 254 | 1 | 17.3 | 123.0 | 1.5 | 5.8 | .60 | 34.9/34.9 | 40/40 | 34/34 | 173/173 | ||
(5 Tons) | 414 | 508 | 9.0 | 62.0 | 0.8 | 2.6 | .30 | 17.4 | 20 | 17 | 87 | |||
| ||||||||||||||
| 518 | 632 |
| 7.1 | 50.0 | 0.8 | 2.6 | .30 | 13.8 | 20 | 13 | 70 | ||
072 | 187 | 254 |
| 20.5 | 156.0 | 1.4 | 5.8 | .60 | 38.8/38.8 | 45/45 | 37/37 | 205/205 | ||
414 | 508 | 1 | 9.6 | 75.0 | 0.6 | 2.6 | .30 | 17.9 | 20 | 17 | 99 | |||
(6 Tons) | ||||||||||||||
518 | 632 |
| 7.7 | 56.0 | 0.6 | 2.6 | .30 | 14.3 | 20 | 14 | 75 | |||
|
|
| 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 |
*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
3.Unbalanced 3-Phase Supply Voltage
Never operate a motor where phase imbalance in supply voltage is greater than 2%. Use the following formula to determine the percent voltage imbalance.
% Voltage Imbalance
max voltage deviation from average voltage
= 100 x
average voltage
Example: Supply voltage is
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.
POWER EXHAUST ELECTRICAL DATA
POWER EXHAUST | MCA | MCA | MCA | MOCP | |
(for separate | |||||
PART NO. | (230 v) | (460 v) | (575 v) | ||
power source) | |||||
|
|
|
| ||
CRPWREXH021A01 | N/A | 0.9 | N/A | 15 | |
CRPWREXH022A01 | 3.3 | N/A | 1.32 | 15 | |
CRPWREXH023A01 | N/A | 1.8 | N/A | 15 | |
CRPWREXH028A01 | 1.7 | N/A | 0.68 | 15 | |
CRPWREXH029A01 | N/A | 1.0 | N/A | 15 | |
CRPWREXH030A01 | 1.6 | N/A | 0.64 | 15 |
N/A — Not available
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. Deter- mine the new MCA including the power exhaust using the following formula:
MCA New = MCA unit only + MCA of Power Exhaust
For example, using a 581B072 unit with MCA = 32.8 and MOCP = 40, with CRPWREXH030A01 power exhaust.
MCA New = 32.8 amps + 1.6 amps = 34.4 amps
If the new MCA does not exceed the published MOCP, then MOCP would not change. The MOCP in this example is 40 amps and the MCA New is below 40; 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.