Bryant 548J - Manual (Page 96)

96
Legend and Notes for Table 50
LEGEND:
CO --- Convenient outlet
DISC --- Disconnect
FLA --- Full load amps
IFM --- Indoor fan motor
LRA --- Locked rotor amps
MCA --- Minimum circuit amps
MOCP --- Maximum over current protection
PE --- Power exhaust
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.
APPENDIX V. WIRING DIAGRAM LIST
Wiring Diagrams
548J***A
SIZE VOLTAGE CONTROL POWER
04A
208/230---1---60 48TM501434.02 48TM501435.02
208/230---3---60 48TM501434.02 48TM501436.02
460---3---60 48TM501434.02 48TM501436.02
575---3---60 48TM501434.02 48TM501436.02
05A
208/230---1---60 48TM501434.02 48TM501435.02
208/230---3---60 48TM501434.02 48TM501436.02
460---3---60 48TM501434.02 48TM501436.02
575---3---60 48TM501434.02 48TM501436.02
06A
208/230---1---60 48TM501434.02 48TM501435.02
208/230---3---60 48TM501434.02 48TM501436.02
460---3---60 48TM501434.02 48TM501436.02
575---3---60 48TM501434.02 48TM501436.02
07A
208/230---3---60 48TM501434.02 48TM501436.0
460---3---60 48TM501434.02 48TM501436.0
575---3---60 48TM501434.02 48TM501436.0
All RTU---MP* 48TM501531.03
548J***D
SIZE VOLTAGE CONTROL POWER
08D
208/230---3---60 48TM501370.03 48TM501371.04
460---3---60 48TM501370.03 48TM501371.04
575---3---60 48TM501370.03 48TM501371.04
09D
208/230---3---60 48TM501370.03 48TM501371.04
460---3---60 48TM501370.03 48TM501371.04
575---3---60 48TM501370.03 48TM501371.04
All RTU---MP* 48TM501448.03
NOTE: Component arrangement on Control; Legend on Power Schematic
* The RTU--MP control label overlays a portion of the base unit control label. The base unit label drawing and the control option drawing are required to
provide a complete unit control diagram.
548J