Table 4 Ð Electrical Data
UNIT | NOMINAL VOLTAGE | VOLTAGE RANGE | COMPRESSOR | OFM |
| POWER SUPPLY | MINIMUM DISCONNECT | ||||
575A | Min | Max | RLA | LRA | FLA | MCA |
| MAX FUSE OR | FLA | LRA | |
| HACR BRKR AMPS | ||||||||||
|
|
|
|
|
|
|
|
|
|
| |
090 | 187 | 254 | 31.5 | 160 | 3.1 | 42.5 |
| 50 | 45 | 177 | |
414 | 508 | 15.7 | 80 | 1.4 | 21.0 |
| 25 | 25 | 89 | ||
|
| ||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
| LEGEND |
FLA | Ð Full Load Amps |
HACR Ð Heating, Air Conditioning and Refrigeration | |
LRA | Ð Locked Rotor Amps |
MCA | Ð Minimum Circuit Amps |
NEC | Ð National Electrical Code |
OFM | Ð Outdoor Fan Motor |
RLA | Ð Rated Load Amps |
Example: Supply voltage is
AB = 452 v BC = 464 v AC = 455 v
Average Voltage =
452 + 464 + 455
3
=
1371
3
NOTES:
1.In compliance with NEC requirements for multimotor and combina- tion load equipment (refer to NEC Articles 430 and 440), the over- current protective device for the unit shall be fuse or HACR breaker.
2.Unbalanced
Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine the percent voltage imbalance.
= 100 x | max voltage deviation from average voltage | |
average voltage | ||
|
= 457
(AB) 457 2 452 = 5 v (BC) 464 2 457 = 7 v
(AC) 457 2 455 = 2 v Maximum deviation is 7 v. Determine percent voltage imbalance
7
% Voltage Imbalance = 100
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.
Table 5 Ð Accessory Electric Heater Data
UNIT | NOMINAL kW | HEATER | HEATER | MCA* | MOCP* | ||
PART NO. | AMPS | ||||||
|
|
|
| ||||
| 5 | CAELHEAT001A00 | 12.0 | 25.6 | 30 | ||
| CAELHEAT002A00 | 6.0 | 12.3 | 15 | |||
|
| ||||||
| 10 | CAELHEAT004A00 | 24.1 | 40.7 | 50 | ||
| CAELHEAT005A00 | 12.0 | 19.8 | 25 | |||
|
| ||||||
090 | 15 | CAELHEAT007A00 | 36.0 | 55.7 | 80 | ||
CAELHEAT008A00 | 18.0 | 27.4 | 40 | ||||
|
| ||||||
| 25 | CAELHEAT010A00 | 60.1 | 85.8 | 125 | ||
| CAELHEAT011A00 | 30.1 | 42.4 | 60 | |||
|
| ||||||
| 35 | CAELHEAT013A00 | 84.0 | 115.8 | 175 | ||
| CAELHEAT014A00 | 42.1 | 57.4 | 80 | |||
|
| ||||||
|
|
|
|
|
|
|
| LEGEND |
MCA | Ð Minimum Circuit Amps |
MOCP | Ð Maximum Overcurrent Protection (Amps) |
*Sizes shown are for
NOTES:
1.MCA and MOCP values apply to both standard and alternate factory- supplied motors.
2.Electrical resistance heaters are rated at 240 v or 480 v. To deter- mine heater capacity (kW) at unit nameplate voltage, multiply
HEATER RATING |
|
| ACTUAL SITE VOLTAGE |
|
| ||||
VOLTAGE | 200 | 208 | 230 | 240 | 400 |
| 440 | 460 | 480 |
240 | .694 | .751 | .918 | 1 | Ð |
| Ð | Ð | Ð |
480 | Ð | Ð | Ð | Ð | .694 | . | 840 | .918 | 1 |
NOTE: The following equation converts kW of heat energy to Btuh: kW x 3,412 = Btuh.
Ð7Ð