Operating instructions

UNIT
SIZE
46GS
030
O36
042
O48
O60
Table 4--Electrical Data--Unit 48GS
V-PH-HZ
VOLTAGE COMPRESSOR
RANGE
Min Max RLA LRA
OUTDOOR FAN
MOTOR
INDOOR FAN
MOTOR POWER SUPPLY
208/230-3-S0 187 253 12.6
208/230-3--60 187 253 9.0
460-3-60 414 506 4.5
208/230-3-60 187 253 10.7
460-3-60 414 506 5.3
208/2_0 187 253 13.5
460-3-60 414 506 6.7
208/230-3-60 187 253 18.6
460-3-60 414 506 8,5
FLA
68.0 0.8
78.0 1.6
40.0 0.9
85.0 1.6
42.0 0.9
108.0 1.6
47.5 0.9
125.0 1.6
66.5 0.9
FLA MCA Max Fuse or
Ckt Bkr
2.0 13.2 20
3,6 16,5 25
1.9 8.4 15
3.8 18.8 25
2.0 9.5 15
3.8 22.3 35
2.0 11.3 15
6.2 31.1 45
3.2 14.7 20
MCA Minimum Circuit Amps _"
MOCP Maximum Overcurrent Protection
RLA -- Rated Load Amps
CKT BKR -- Circuit Breaker
NOTES:
1. In compliance with NEC (National Electrical Code) requirements
for multimotor and combination load equipment (refer to NEC
Articles 436 and 440), the overcurrent protective device for the
unit shall be Power Supply fuse. Canadian units may be
fuse or circuit breaker.
2. Minimum wire size is based on 60 C copper wire. If other than
60 C wire is used, or if length exceeds wire length in table,
determine size from NEC.
3. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply volt-
age is greater than 2%. Use the following formula to determine
the percentage of voltage imbalance.
% Voltage imbalance
= 100 x max voltage deviation from average voita_le
average voltage
EXAMPLE: Supply voltage is 460-3-60.
A S C AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage = 452 + 464 + 455
3
= 1371
3
= 457
Determine maximum deviation from average voltage.
(AB) 457 452=5v
(BC) 464 457=7v
(AC) 457 455=2v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x 7
457
-- 1.53%
This amount of phase imbalance is satisfactoryas it is below the
maximum allowable 2%.
I IMPORTANT: If the supply voltage phase imbalance is
immediately,morethan 2%, contact your local electric utility company
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