Bryant 541A Installation, Start-Up And Service Instructions Manual page 9

Split system heat pump units sizes 120,180 10 to 15 tons
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LEGEND
EQUIP — Equipment
GND
— Ground
NEC
— National Electrical Code
TB
— Terminal Block
Field Wiring
Factory Wiring
541A
Model
Name-
plate
501
208-230
120
601
460
501
208-230
180
601
460
LEGEND
FLA
— Full Load Amps (fan motors)
ICF
— Maximum Instantaneous Current Flow during start-up
(LRA of compressor plus total FLA of fan motors)
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps per NEC Section 430-24
MOCP— Maximum Overcurrent Protection (fuse only)
RLA — Rated Load Amps (compressor)
TERMINAL BOARD (TB1) IN
UNIT CONTROL BOX
11
21
22
12
13
23
EQUIP GND
Fig. 9 — Main Power Supply Wiring
Table 7 — Electrical Data (3 Ph/60 Hz)
UNIT
Volts
Supplied*
MCA
Min
Max
187
253
62.5
414
528
29.1
187
253
87.5
414
528
40.7
DISCONNECT PER NEC
OR LOCAL CODE
COMPRESSOR
MOCP
ICF
(Amps)
RLA
Fuse Only
178
100
43.6
81
40
20.0
274
125
63.6
124
60
29.3
*Units are suitable for use on electrical systems where voltage supplied
to the unit terminals is not below or above the listed limits.
NOTES:
1. MCA and MOCP values are calculated in accordance with NEC
(National Electric Code), Article 440.
2. Motor RLA and FLA values are established in accordance with UL
(Underwriters' Laboratories) Standard 1995.
9
FAN MOTORS
(Single-Phase)
FLA (ea)
Total
Fan No.
LRA
Fans
1
170
4.3
2
77
2.3
266
4.3
2
120
2.3
2
3.7
1.9
3.7
1.9

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